niu.c 229.1 KB
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/* niu.c: Neptune ethernet driver.
 *
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 * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
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 */

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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/module.h>
#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/etherdevice.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <linux/mii.h>
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#include <linux/if.h>
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#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <linux/in.h>
#include <linux/ipv6.h>
#include <linux/log2.h>
#include <linux/jiffies.h>
#include <linux/crc32.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/io.h>
#include <linux/of_device.h>

#include "niu.h"

#define DRV_MODULE_NAME		"niu"
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#define DRV_MODULE_VERSION	"1.1"
#define DRV_MODULE_RELDATE	"Apr 22, 2010"
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static char version[] =
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	DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";

MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
MODULE_DESCRIPTION("NIU ethernet driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);

#ifndef readq
static u64 readq(void __iomem *reg)
{
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	return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
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}

static void writeq(u64 val, void __iomem *reg)
{
	writel(val & 0xffffffff, reg);
	writel(val >> 32, reg + 0x4UL);
}
#endif

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static const struct pci_device_id niu_pci_tbl[] = {
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	{PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
	{}
};

MODULE_DEVICE_TABLE(pci, niu_pci_tbl);

#define NIU_TX_TIMEOUT			(5 * HZ)

#define nr64(reg)		readq(np->regs + (reg))
#define nw64(reg, val)		writeq((val), np->regs + (reg))

#define nr64_mac(reg)		readq(np->mac_regs + (reg))
#define nw64_mac(reg, val)	writeq((val), np->mac_regs + (reg))

#define nr64_ipp(reg)		readq(np->regs + np->ipp_off + (reg))
#define nw64_ipp(reg, val)	writeq((val), np->regs + np->ipp_off + (reg))

#define nr64_pcs(reg)		readq(np->regs + np->pcs_off + (reg))
#define nw64_pcs(reg, val)	writeq((val), np->regs + np->pcs_off + (reg))

#define nr64_xpcs(reg)		readq(np->regs + np->xpcs_off + (reg))
#define nw64_xpcs(reg, val)	writeq((val), np->regs + np->xpcs_off + (reg))

#define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)

static int niu_debug;
static int debug = -1;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "NIU debug level");

#define niu_lock_parent(np, flags) \
	spin_lock_irqsave(&np->parent->lock, flags)
#define niu_unlock_parent(np, flags) \
	spin_unlock_irqrestore(&np->parent->lock, flags)

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static int serdes_init_10g_serdes(struct niu *np);

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static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
				     u64 bits, int limit, int delay)
{
	while (--limit >= 0) {
		u64 val = nr64_mac(reg);

		if (!(val & bits))
			break;
		udelay(delay);
	}
	if (limit < 0)
		return -ENODEV;
	return 0;
}

static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
					u64 bits, int limit, int delay,
					const char *reg_name)
{
	int err;

	nw64_mac(reg, bits);
	err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
	if (err)
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		netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
			   (unsigned long long)bits, reg_name,
			   (unsigned long long)nr64_mac(reg));
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	return err;
}

#define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
({	BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
	__niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
})

static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
				     u64 bits, int limit, int delay)
{
	while (--limit >= 0) {
		u64 val = nr64_ipp(reg);

		if (!(val & bits))
			break;
		udelay(delay);
	}
	if (limit < 0)
		return -ENODEV;
	return 0;
}

static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
					u64 bits, int limit, int delay,
					const char *reg_name)
{
	int err;
	u64 val;

	val = nr64_ipp(reg);
	val |= bits;
	nw64_ipp(reg, val);

	err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
	if (err)
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		netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
			   (unsigned long long)bits, reg_name,
			   (unsigned long long)nr64_ipp(reg));
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	return err;
}

#define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
({	BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
	__niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
})

static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
				 u64 bits, int limit, int delay)
{
	while (--limit >= 0) {
		u64 val = nr64(reg);

		if (!(val & bits))
			break;
		udelay(delay);
	}
	if (limit < 0)
		return -ENODEV;
	return 0;
}

#define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
({	BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
	__niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
})

static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
				    u64 bits, int limit, int delay,
				    const char *reg_name)
{
	int err;

	nw64(reg, bits);
	err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
	if (err)
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		netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
			   (unsigned long long)bits, reg_name,
			   (unsigned long long)nr64(reg));
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	return err;
}

#define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
({	BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
	__niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
})

static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
{
	u64 val = (u64) lp->timer;

	if (on)
		val |= LDG_IMGMT_ARM;

	nw64(LDG_IMGMT(lp->ldg_num), val);
}

static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
{
	unsigned long mask_reg, bits;
	u64 val;

	if (ldn < 0 || ldn > LDN_MAX)
		return -EINVAL;

	if (ldn < 64) {
		mask_reg = LD_IM0(ldn);
		bits = LD_IM0_MASK;
	} else {
		mask_reg = LD_IM1(ldn - 64);
		bits = LD_IM1_MASK;
	}

	val = nr64(mask_reg);
	if (on)
		val &= ~bits;
	else
		val |= bits;
	nw64(mask_reg, val);

	return 0;
}

static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
{
	struct niu_parent *parent = np->parent;
	int i;

	for (i = 0; i <= LDN_MAX; i++) {
		int err;

		if (parent->ldg_map[i] != lp->ldg_num)
			continue;

		err = niu_ldn_irq_enable(np, i, on);
		if (err)
			return err;
	}
	return 0;
}

static int niu_enable_interrupts(struct niu *np, int on)
{
	int i;

	for (i = 0; i < np->num_ldg; i++) {
		struct niu_ldg *lp = &np->ldg[i];
		int err;

		err = niu_enable_ldn_in_ldg(np, lp, on);
		if (err)
			return err;
	}
	for (i = 0; i < np->num_ldg; i++)
		niu_ldg_rearm(np, &np->ldg[i], on);

	return 0;
}

static u32 phy_encode(u32 type, int port)
{
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	return type << (port * 2);
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}

static u32 phy_decode(u32 val, int port)
{
	return (val >> (port * 2)) & PORT_TYPE_MASK;
}

static int mdio_wait(struct niu *np)
{
	int limit = 1000;
	u64 val;

	while (--limit > 0) {
		val = nr64(MIF_FRAME_OUTPUT);
		if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
			return val & MIF_FRAME_OUTPUT_DATA;

		udelay(10);
	}

	return -ENODEV;
}

static int mdio_read(struct niu *np, int port, int dev, int reg)
{
	int err;

	nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
	err = mdio_wait(np);
	if (err < 0)
		return err;

	nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
	return mdio_wait(np);
}

static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
{
	int err;

	nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
	err = mdio_wait(np);
	if (err < 0)
		return err;

	nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
	err = mdio_wait(np);
	if (err < 0)
		return err;

	return 0;
}

static int mii_read(struct niu *np, int port, int reg)
{
	nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
	return mdio_wait(np);
}

static int mii_write(struct niu *np, int port, int reg, int data)
{
	int err;

	nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
	err = mdio_wait(np);
	if (err < 0)
		return err;

	return 0;
}

static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
{
	int err;

	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			 ESR2_TI_PLL_TX_CFG_L(channel),
			 val & 0xffff);
	if (!err)
		err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
				 ESR2_TI_PLL_TX_CFG_H(channel),
				 val >> 16);
	return err;
}

static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
{
	int err;

	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			 ESR2_TI_PLL_RX_CFG_L(channel),
			 val & 0xffff);
	if (!err)
		err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
				 ESR2_TI_PLL_RX_CFG_H(channel),
				 val >> 16);
	return err;
}

/* Mode is always 10G fiber.  */
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static int serdes_init_niu_10g_fiber(struct niu *np)
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{
	struct niu_link_config *lp = &np->link_config;
	u32 tx_cfg, rx_cfg;
	unsigned long i;

	tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
	rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
		  PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
		  PLL_RX_CFG_EQ_LP_ADAPTIVE);

	if (lp->loopback_mode == LOOPBACK_PHY) {
		u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;

		mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			   ESR2_TI_PLL_TEST_CFG_L, test_cfg);

		tx_cfg |= PLL_TX_CFG_ENTEST;
		rx_cfg |= PLL_RX_CFG_ENTEST;
	}

	/* Initialize all 4 lanes of the SERDES.  */
	for (i = 0; i < 4; i++) {
		int err = esr2_set_tx_cfg(np, i, tx_cfg);
		if (err)
			return err;
	}

	for (i = 0; i < 4; i++) {
		int err = esr2_set_rx_cfg(np, i, rx_cfg);
		if (err)
			return err;
	}

	return 0;
}

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static int serdes_init_niu_1g_serdes(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	u16 pll_cfg, pll_sts;
	int max_retry = 100;
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	u64 uninitialized_var(sig), mask, val;
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	u32 tx_cfg, rx_cfg;
	unsigned long i;
	int err;

	tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
		  PLL_TX_CFG_RATE_HALF);
	rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
		  PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
		  PLL_RX_CFG_RATE_HALF);

	if (np->port == 0)
		rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;

	if (lp->loopback_mode == LOOPBACK_PHY) {
		u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;

		mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			   ESR2_TI_PLL_TEST_CFG_L, test_cfg);

		tx_cfg |= PLL_TX_CFG_ENTEST;
		rx_cfg |= PLL_RX_CFG_ENTEST;
	}

	/* Initialize PLL for 1G */
	pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);

	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			 ESR2_TI_PLL_CFG_L, pll_cfg);
	if (err) {
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		netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
			   np->port, __func__);
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		return err;
	}

	pll_sts = PLL_CFG_ENPLL;

	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			 ESR2_TI_PLL_STS_L, pll_sts);
	if (err) {
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		netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
			   np->port, __func__);
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		return err;
	}

	udelay(200);

	/* Initialize all 4 lanes of the SERDES.  */
	for (i = 0; i < 4; i++) {
		err = esr2_set_tx_cfg(np, i, tx_cfg);
		if (err)
			return err;
	}

	for (i = 0; i < 4; i++) {
		err = esr2_set_rx_cfg(np, i, rx_cfg);
		if (err)
			return err;
	}

	switch (np->port) {
	case 0:
		val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
		mask = val;
		break;

	case 1:
		val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
		mask = val;
		break;

	default:
		return -EINVAL;
	}

	while (max_retry--) {
		sig = nr64(ESR_INT_SIGNALS);
		if ((sig & mask) == val)
			break;

		mdelay(500);
	}

	if ((sig & mask) != val) {
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		netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
			   np->port, (int)(sig & mask), (int)val);
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		return -ENODEV;
	}

	return 0;
}

static int serdes_init_niu_10g_serdes(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
	int max_retry = 100;
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	u64 uninitialized_var(sig), mask, val;
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	unsigned long i;
	int err;

	tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
	rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
		  PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
		  PLL_RX_CFG_EQ_LP_ADAPTIVE);

	if (lp->loopback_mode == LOOPBACK_PHY) {
		u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;

		mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			   ESR2_TI_PLL_TEST_CFG_L, test_cfg);

		tx_cfg |= PLL_TX_CFG_ENTEST;
		rx_cfg |= PLL_RX_CFG_ENTEST;
	}

	/* Initialize PLL for 10G */
	pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);

	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			 ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
	if (err) {
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		netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
			   np->port, __func__);
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		return err;
	}

	pll_sts = PLL_CFG_ENPLL;

	err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
			 ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
	if (err) {
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		netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
			   np->port, __func__);
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		return err;
	}

	udelay(200);

	/* Initialize all 4 lanes of the SERDES.  */
	for (i = 0; i < 4; i++) {
		err = esr2_set_tx_cfg(np, i, tx_cfg);
		if (err)
			return err;
	}

	for (i = 0; i < 4; i++) {
		err = esr2_set_rx_cfg(np, i, rx_cfg);
		if (err)
			return err;
	}

	/* check if serdes is ready */

	switch (np->port) {
	case 0:
		mask = ESR_INT_SIGNALS_P0_BITS;
		val = (ESR_INT_SRDY0_P0 |
		       ESR_INT_DET0_P0 |
		       ESR_INT_XSRDY_P0 |
		       ESR_INT_XDP_P0_CH3 |
		       ESR_INT_XDP_P0_CH2 |
		       ESR_INT_XDP_P0_CH1 |
		       ESR_INT_XDP_P0_CH0);
		break;

	case 1:
		mask = ESR_INT_SIGNALS_P1_BITS;
		val = (ESR_INT_SRDY0_P1 |
		       ESR_INT_DET0_P1 |
		       ESR_INT_XSRDY_P1 |
		       ESR_INT_XDP_P1_CH3 |
		       ESR_INT_XDP_P1_CH2 |
		       ESR_INT_XDP_P1_CH1 |
		       ESR_INT_XDP_P1_CH0);
		break;

	default:
		return -EINVAL;
	}

	while (max_retry--) {
		sig = nr64(ESR_INT_SIGNALS);
		if ((sig & mask) == val)
			break;

		mdelay(500);
	}

	if ((sig & mask) != val) {
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		pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
			np->port, (int)(sig & mask), (int)val);
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		/* 10G failed, try initializing at 1G */
		err = serdes_init_niu_1g_serdes(np);
		if (!err) {
			np->flags &= ~NIU_FLAGS_10G;
			np->mac_xcvr = MAC_XCVR_PCS;
		}  else {
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			netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
				   np->port);
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			return -ENODEV;
		}
	}
	return 0;
}

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static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
{
	int err;

	err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
	if (err >= 0) {
		*val = (err & 0xffff);
		err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
				ESR_RXTX_CTRL_H(chan));
		if (err >= 0)
			*val |= ((err & 0xffff) << 16);
		err = 0;
	}
	return err;
}

static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
{
	int err;

	err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
			ESR_GLUE_CTRL0_L(chan));
	if (err >= 0) {
		*val = (err & 0xffff);
		err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
				ESR_GLUE_CTRL0_H(chan));
		if (err >= 0) {
			*val |= ((err & 0xffff) << 16);
			err = 0;
		}
	}
	return err;
}

static int esr_read_reset(struct niu *np, u32 *val)
{
	int err;

	err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
			ESR_RXTX_RESET_CTRL_L);
	if (err >= 0) {
		*val = (err & 0xffff);
		err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
				ESR_RXTX_RESET_CTRL_H);
		if (err >= 0) {
			*val |= ((err & 0xffff) << 16);
			err = 0;
		}
	}
	return err;
}

static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
{
	int err;

	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
			 ESR_RXTX_CTRL_L(chan), val & 0xffff);
	if (!err)
		err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
				 ESR_RXTX_CTRL_H(chan), (val >> 16));
	return err;
}

static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
{
	int err;

	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
			ESR_GLUE_CTRL0_L(chan), val & 0xffff);
	if (!err)
		err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
				 ESR_GLUE_CTRL0_H(chan), (val >> 16));
	return err;
}

static int esr_reset(struct niu *np)
{
716
	u32 uninitialized_var(reset);
717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744
	int err;

	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
			 ESR_RXTX_RESET_CTRL_L, 0x0000);
	if (err)
		return err;
	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
			 ESR_RXTX_RESET_CTRL_H, 0xffff);
	if (err)
		return err;
	udelay(200);

	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
			 ESR_RXTX_RESET_CTRL_L, 0xffff);
	if (err)
		return err;
	udelay(200);

	err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
			 ESR_RXTX_RESET_CTRL_H, 0x0000);
	if (err)
		return err;
	udelay(200);

	err = esr_read_reset(np, &reset);
	if (err)
		return err;
	if (reset != 0) {
745 746
		netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
			   np->port, reset);
747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865
		return -ENODEV;
	}

	return 0;
}

static int serdes_init_10g(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	unsigned long ctrl_reg, test_cfg_reg, i;
	u64 ctrl_val, test_cfg_val, sig, mask, val;
	int err;

	switch (np->port) {
	case 0:
		ctrl_reg = ENET_SERDES_0_CTRL_CFG;
		test_cfg_reg = ENET_SERDES_0_TEST_CFG;
		break;
	case 1:
		ctrl_reg = ENET_SERDES_1_CTRL_CFG;
		test_cfg_reg = ENET_SERDES_1_TEST_CFG;
		break;

	default:
		return -EINVAL;
	}
	ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
		    ENET_SERDES_CTRL_SDET_1 |
		    ENET_SERDES_CTRL_SDET_2 |
		    ENET_SERDES_CTRL_SDET_3 |
		    (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
	test_cfg_val = 0;

	if (lp->loopback_mode == LOOPBACK_PHY) {
		test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_0_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_1_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_2_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_3_SHIFT));
	}

	nw64(ctrl_reg, ctrl_val);
	nw64(test_cfg_reg, test_cfg_val);

	/* Initialize all 4 lanes of the SERDES.  */
	for (i = 0; i < 4; i++) {
		u32 rxtx_ctrl, glue0;

		err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
		if (err)
			return err;
		err = esr_read_glue0(np, i, &glue0);
		if (err)
			return err;

		rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
		rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
			      (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));

		glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
			   ESR_GLUE_CTRL0_THCNT |
			   ESR_GLUE_CTRL0_BLTIME);
		glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
			  (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
			  (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
			  (BLTIME_300_CYCLES <<
			   ESR_GLUE_CTRL0_BLTIME_SHIFT));

		err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
		if (err)
			return err;
		err = esr_write_glue0(np, i, glue0);
		if (err)
			return err;
	}

	err = esr_reset(np);
	if (err)
		return err;

	sig = nr64(ESR_INT_SIGNALS);
	switch (np->port) {
	case 0:
		mask = ESR_INT_SIGNALS_P0_BITS;
		val = (ESR_INT_SRDY0_P0 |
		       ESR_INT_DET0_P0 |
		       ESR_INT_XSRDY_P0 |
		       ESR_INT_XDP_P0_CH3 |
		       ESR_INT_XDP_P0_CH2 |
		       ESR_INT_XDP_P0_CH1 |
		       ESR_INT_XDP_P0_CH0);
		break;

	case 1:
		mask = ESR_INT_SIGNALS_P1_BITS;
		val = (ESR_INT_SRDY0_P1 |
		       ESR_INT_DET0_P1 |
		       ESR_INT_XSRDY_P1 |
		       ESR_INT_XDP_P1_CH3 |
		       ESR_INT_XDP_P1_CH2 |
		       ESR_INT_XDP_P1_CH1 |
		       ESR_INT_XDP_P1_CH0);
		break;

	default:
		return -EINVAL;
	}

	if ((sig & mask) != val) {
866 867 868 869
		if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
			np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
			return 0;
		}
870 871
		netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
			   np->port, (int)(sig & mask), (int)val);
872 873
		return -ENODEV;
	}
874 875
	if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
		np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905
	return 0;
}

static int serdes_init_1g(struct niu *np)
{
	u64 val;

	val = nr64(ENET_SERDES_1_PLL_CFG);
	val &= ~ENET_SERDES_PLL_FBDIV2;
	switch (np->port) {
	case 0:
		val |= ENET_SERDES_PLL_HRATE0;
		break;
	case 1:
		val |= ENET_SERDES_PLL_HRATE1;
		break;
	case 2:
		val |= ENET_SERDES_PLL_HRATE2;
		break;
	case 3:
		val |= ENET_SERDES_PLL_HRATE3;
		break;
	default:
		return -EINVAL;
	}
	nw64(ENET_SERDES_1_PLL_CFG, val);

	return 0;
}

906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018
static int serdes_init_1g_serdes(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
	u64 ctrl_val, test_cfg_val, sig, mask, val;
	int err;
	u64 reset_val, val_rd;

	val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
		ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
		ENET_SERDES_PLL_FBDIV0;
	switch (np->port) {
	case 0:
		reset_val =  ENET_SERDES_RESET_0;
		ctrl_reg = ENET_SERDES_0_CTRL_CFG;
		test_cfg_reg = ENET_SERDES_0_TEST_CFG;
		pll_cfg = ENET_SERDES_0_PLL_CFG;
		break;
	case 1:
		reset_val =  ENET_SERDES_RESET_1;
		ctrl_reg = ENET_SERDES_1_CTRL_CFG;
		test_cfg_reg = ENET_SERDES_1_TEST_CFG;
		pll_cfg = ENET_SERDES_1_PLL_CFG;
		break;

	default:
		return -EINVAL;
	}
	ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
		    ENET_SERDES_CTRL_SDET_1 |
		    ENET_SERDES_CTRL_SDET_2 |
		    ENET_SERDES_CTRL_SDET_3 |
		    (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
	test_cfg_val = 0;

	if (lp->loopback_mode == LOOPBACK_PHY) {
		test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_0_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_1_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_2_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_3_SHIFT));
	}

	nw64(ENET_SERDES_RESET, reset_val);
	mdelay(20);
	val_rd = nr64(ENET_SERDES_RESET);
	val_rd &= ~reset_val;
	nw64(pll_cfg, val);
	nw64(ctrl_reg, ctrl_val);
	nw64(test_cfg_reg, test_cfg_val);
	nw64(ENET_SERDES_RESET, val_rd);
	mdelay(2000);

	/* Initialize all 4 lanes of the SERDES.  */
	for (i = 0; i < 4; i++) {
		u32 rxtx_ctrl, glue0;

		err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
		if (err)
			return err;
		err = esr_read_glue0(np, i, &glue0);
		if (err)
			return err;

		rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
		rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
			      (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));

		glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
			   ESR_GLUE_CTRL0_THCNT |
			   ESR_GLUE_CTRL0_BLTIME);
		glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
			  (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
			  (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
			  (BLTIME_300_CYCLES <<
			   ESR_GLUE_CTRL0_BLTIME_SHIFT));

		err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
		if (err)
			return err;
		err = esr_write_glue0(np, i, glue0);
		if (err)
			return err;
	}


	sig = nr64(ESR_INT_SIGNALS);
	switch (np->port) {
	case 0:
		val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
		mask = val;
		break;

	case 1:
		val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
		mask = val;
		break;

	default:
		return -EINVAL;
	}

	if ((sig & mask) != val) {
1019 1020
		netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
			   np->port, (int)(sig & mask), (int)val);
1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
		return -ENODEV;
	}

	return 0;
}

static int link_status_1g_serdes(struct niu *np, int *link_up_p)
{
	struct niu_link_config *lp = &np->link_config;
	int link_up;
	u64 val;
	u16 current_speed;
	unsigned long flags;
	u8 current_duplex;

	link_up = 0;
	current_speed = SPEED_INVALID;
	current_duplex = DUPLEX_INVALID;

	spin_lock_irqsave(&np->lock, flags);

	val = nr64_pcs(PCS_MII_STAT);

	if (val & PCS_MII_STAT_LINK_STATUS) {
		link_up = 1;
		current_speed = SPEED_1000;
		current_duplex = DUPLEX_FULL;
	}

	lp->active_speed = current_speed;
	lp->active_duplex = current_duplex;
	spin_unlock_irqrestore(&np->lock, flags);

	*link_up_p = link_up;
	return 0;
}

static int link_status_10g_serdes(struct niu *np, int *link_up_p)
{
	unsigned long flags;
	struct niu_link_config *lp = &np->link_config;
	int link_up = 0;
	int link_ok = 1;
	u64 val, val2;
	u16 current_speed;
	u8 current_duplex;

	if (!(np->flags & NIU_FLAGS_10G))
		return link_status_1g_serdes(np, link_up_p);

	current_speed = SPEED_INVALID;
	current_duplex = DUPLEX_INVALID;
	spin_lock_irqsave(&np->lock, flags);

	val = nr64_xpcs(XPCS_STATUS(0));
	val2 = nr64_mac(XMAC_INTER2);
	if (val2 & 0x01000000)
		link_ok = 0;

	if ((val & 0x1000ULL) && link_ok) {
		link_up = 1;
		current_speed = SPEED_10000;
		current_duplex = DUPLEX_FULL;
	}
	lp->active_speed = current_speed;
	lp->active_duplex = current_duplex;
	spin_unlock_irqrestore(&np->lock, flags);
	*link_up_p = link_up;
	return 0;
}

1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153
static int link_status_mii(struct niu *np, int *link_up_p)
{
	struct niu_link_config *lp = &np->link_config;
	int err;
	int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
	int supported, advertising, active_speed, active_duplex;

	err = mii_read(np, np->phy_addr, MII_BMCR);
	if (unlikely(err < 0))
		return err;
	bmcr = err;

	err = mii_read(np, np->phy_addr, MII_BMSR);
	if (unlikely(err < 0))
		return err;
	bmsr = err;

	err = mii_read(np, np->phy_addr, MII_ADVERTISE);
	if (unlikely(err < 0))
		return err;
	advert = err;

	err = mii_read(np, np->phy_addr, MII_LPA);
	if (unlikely(err < 0))
		return err;
	lpa = err;

	if (likely(bmsr & BMSR_ESTATEN)) {
		err = mii_read(np, np->phy_addr, MII_ESTATUS);
		if (unlikely(err < 0))
			return err;
		estatus = err;

		err = mii_read(np, np->phy_addr, MII_CTRL1000);
		if (unlikely(err < 0))
			return err;
		ctrl1000 = err;

		err = mii_read(np, np->phy_addr, MII_STAT1000);
		if (unlikely(err < 0))
			return err;
		stat1000 = err;
	} else
		estatus = ctrl1000 = stat1000 = 0;

	supported = 0;
	if (bmsr & BMSR_ANEGCAPABLE)
		supported |= SUPPORTED_Autoneg;
	if (bmsr & BMSR_10HALF)
		supported |= SUPPORTED_10baseT_Half;
	if (bmsr & BMSR_10FULL)
		supported |= SUPPORTED_10baseT_Full;
	if (bmsr & BMSR_100HALF)
		supported |= SUPPORTED_100baseT_Half;
	if (bmsr & BMSR_100FULL)
		supported |= SUPPORTED_100baseT_Full;
	if (estatus & ESTATUS_1000_THALF)
		supported |= SUPPORTED_1000baseT_Half;
	if (estatus & ESTATUS_1000_TFULL)
		supported |= SUPPORTED_1000baseT_Full;
	lp->supported = supported;

1154 1155
	advertising = mii_adv_to_ethtool_adv_t(advert);
	advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204

	if (bmcr & BMCR_ANENABLE) {
		int neg, neg1000;

		lp->active_autoneg = 1;
		advertising |= ADVERTISED_Autoneg;

		neg = advert & lpa;
		neg1000 = (ctrl1000 << 2) & stat1000;

		if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
			active_speed = SPEED_1000;
		else if (neg & LPA_100)
			active_speed = SPEED_100;
		else if (neg & (LPA_10HALF | LPA_10FULL))
			active_speed = SPEED_10;
		else
			active_speed = SPEED_INVALID;

		if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
			active_duplex = DUPLEX_FULL;
		else if (active_speed != SPEED_INVALID)
			active_duplex = DUPLEX_HALF;
		else
			active_duplex = DUPLEX_INVALID;
	} else {
		lp->active_autoneg = 0;

		if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
			active_speed = SPEED_1000;
		else if (bmcr & BMCR_SPEED100)
			active_speed = SPEED_100;
		else
			active_speed = SPEED_10;

		if (bmcr & BMCR_FULLDPLX)
			active_duplex = DUPLEX_FULL;
		else
			active_duplex = DUPLEX_HALF;
	}

	lp->active_advertising = advertising;
	lp->active_speed = active_speed;
	lp->active_duplex = active_duplex;
	*link_up_p = !!(bmsr & BMSR_LSTATUS);

	return 0;
}

1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226
static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
{
	struct niu_link_config *lp = &np->link_config;
	u16 current_speed, bmsr;
	unsigned long flags;
	u8 current_duplex;
	int err, link_up;

	link_up = 0;
	current_speed = SPEED_INVALID;
	current_duplex = DUPLEX_INVALID;

	spin_lock_irqsave(&np->lock, flags);

	err = -EINVAL;

	err = mii_read(np, np->phy_addr, MII_BMSR);
	if (err < 0)
		goto out;

	bmsr = err;
	if (bmsr & BMSR_LSTATUS) {
1227
		u16 adv, lpa;
1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257

		err = mii_read(np, np->phy_addr, MII_ADVERTISE);
		if (err < 0)
			goto out;
		adv = err;

		err = mii_read(np, np->phy_addr, MII_LPA);
		if (err < 0)
			goto out;
		lpa = err;

		err = mii_read(np, np->phy_addr, MII_ESTATUS);
		if (err < 0)
			goto out;
		link_up = 1;
		current_speed = SPEED_1000;
		current_duplex = DUPLEX_FULL;

	}
	lp->active_speed = current_speed;
	lp->active_duplex = current_duplex;
	err = 0;

out:
	spin_unlock_irqrestore(&np->lock, flags);

	*link_up_p = link_up;
	return err;
}

1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273
static int link_status_1g(struct niu *np, int *link_up_p)
{
	struct niu_link_config *lp = &np->link_config;
	unsigned long flags;
	int err;

	spin_lock_irqsave(&np->lock, flags);

	err = link_status_mii(np, link_up_p);
	lp->supported |= SUPPORTED_TP;
	lp->active_advertising |= ADVERTISED_TP;

	spin_unlock_irqrestore(&np->lock, flags);
	return err;
}

1274 1275 1276 1277 1278 1279
static int bcm8704_reset(struct niu *np)
{
	int err, limit;

	err = mdio_read(np, np->phy_addr,
			BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
T
Tanli Chang 已提交
1280
	if (err < 0 || err == 0xffff)
1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297
		return err;
	err |= BMCR_RESET;
	err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
			 MII_BMCR, err);
	if (err)
		return err;

	limit = 1000;
	while (--limit >= 0) {
		err = mdio_read(np, np->phy_addr,
				BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
		if (err < 0)
			return err;
		if (!(err & BMCR_RESET))
			break;
	}
	if (limit < 0) {
1298 1299
		netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
			   np->port, (err & 0xffff));
1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318
		return -ENODEV;
	}
	return 0;
}

/* When written, certain PHY registers need to be read back twice
 * in order for the bits to settle properly.
 */
static int bcm8704_user_dev3_readback(struct niu *np, int reg)
{
	int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
	if (err < 0)
		return err;
	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
	if (err < 0)
		return err;
	return 0;
}

1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340
static int bcm8706_init_user_dev3(struct niu *np)
{
	int err;


	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
			BCM8704_USER_OPT_DIGITAL_CTRL);
	if (err < 0)
		return err;
	err &= ~USER_ODIG_CTRL_GPIOS;
	err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
	err |=  USER_ODIG_CTRL_RESV2;
	err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
			 BCM8704_USER_OPT_DIGITAL_CTRL, err);
	if (err)
		return err;

	mdelay(1000);

	return 0;
}

1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
static int bcm8704_init_user_dev3(struct niu *np)
{
	int err;

	err = mdio_write(np, np->phy_addr,
			 BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
			 (USER_CONTROL_OPTXRST_LVL |
			  USER_CONTROL_OPBIASFLT_LVL |
			  USER_CONTROL_OBTMPFLT_LVL |
			  USER_CONTROL_OPPRFLT_LVL |
			  USER_CONTROL_OPTXFLT_LVL |
			  USER_CONTROL_OPRXLOS_LVL |
			  USER_CONTROL_OPRXFLT_LVL |
			  USER_CONTROL_OPTXON_LVL |
			  (0x3f << USER_CONTROL_RES1_SHIFT)));
	if (err)
		return err;

	err = mdio_write(np, np->phy_addr,
			 BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
			 (USER_PMD_TX_CTL_XFP_CLKEN |
			  (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
			  (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
			  USER_PMD_TX_CTL_TSCK_LPWREN));
	if (err)
		return err;

	err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
	if (err)
		return err;
	err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
	if (err)
		return err;

	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
			BCM8704_USER_OPT_DIGITAL_CTRL);
	if (err < 0)
		return err;
	err &= ~USER_ODIG_CTRL_GPIOS;
	err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
	err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
			 BCM8704_USER_OPT_DIGITAL_CTRL, err);
	if (err)
		return err;

	mdelay(1000);

	return 0;
}

M
Mirko Lindner 已提交
1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469
static int mrvl88x2011_act_led(struct niu *np, int val)
{
	int	err;

	err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
		MRVL88X2011_LED_8_TO_11_CTL);
	if (err < 0)
		return err;

	err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
	err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);

	return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
			  MRVL88X2011_LED_8_TO_11_CTL, err);
}

static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
{
	int	err;

	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
			MRVL88X2011_LED_BLINK_CTL);
	if (err >= 0) {
		err &= ~MRVL88X2011_LED_BLKRATE_MASK;
		err |= (rate << 4);

		err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
				 MRVL88X2011_LED_BLINK_CTL, err);
	}

	return err;
}

static int xcvr_init_10g_mrvl88x2011(struct niu *np)
{
	int	err;

	/* Set LED functions */
	err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
	if (err)
		return err;

	/* led activity */
	err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
	if (err)
		return err;

	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
			MRVL88X2011_GENERAL_CTL);
	if (err < 0)
		return err;

	err |= MRVL88X2011_ENA_XFPREFCLK;

	err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
			 MRVL88X2011_GENERAL_CTL, err);
	if (err < 0)
		return err;

	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
			MRVL88X2011_PMA_PMD_CTL_1);
	if (err < 0)
		return err;

	if (np->link_config.loopback_mode == LOOPBACK_MAC)
		err |= MRVL88X2011_LOOPBACK;
	else
		err &= ~MRVL88X2011_LOOPBACK;

	err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
			 MRVL88X2011_PMA_PMD_CTL_1, err);
	if (err < 0)
		return err;

	/* Enable PMD  */
	return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
			  MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
}

1470 1471

static int xcvr_diag_bcm870x(struct niu *np)
1472 1473
{
	u16 analog_stat0, tx_alarm_status;
1474
	int err = 0;
1475 1476 1477 1478 1479 1480

#if 1
	err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
			MII_STAT1000);
	if (err < 0)
		return err;
1481
	pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1482 1483 1484 1485

	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
	if (err < 0)
		return err;
1486
	pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1487 1488 1489 1490 1491

	err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
			MII_NWAYTEST);
	if (err < 0)
		return err;
1492
	pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517
#endif

	/* XXX dig this out it might not be so useful XXX */
	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
			BCM8704_USER_ANALOG_STATUS0);
	if (err < 0)
		return err;
	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
			BCM8704_USER_ANALOG_STATUS0);
	if (err < 0)
		return err;
	analog_stat0 = err;

	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
			BCM8704_USER_TX_ALARM_STATUS);
	if (err < 0)
		return err;
	err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
			BCM8704_USER_TX_ALARM_STATUS);
	if (err < 0)
		return err;
	tx_alarm_status = err;

	if (analog_stat0 != 0x03fc) {
		if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1518 1519
			pr_info("Port %u cable not connected or bad cable\n",
				np->port);
1520
		} else if (analog_stat0 == 0x639c) {
1521 1522
			pr_info("Port %u optical module is bad or missing\n",
				np->port);
1523 1524 1525 1526 1527 1528
		}
	}

	return 0;
}

1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611
static int xcvr_10g_set_lb_bcm870x(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	int err;

	err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
			MII_BMCR);
	if (err < 0)
		return err;

	err &= ~BMCR_LOOPBACK;

	if (lp->loopback_mode == LOOPBACK_MAC)
		err |= BMCR_LOOPBACK;

	err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
			 MII_BMCR, err);
	if (err)
		return err;

	return 0;
}

static int xcvr_init_10g_bcm8706(struct niu *np)
{
	int err = 0;
	u64 val;

	if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
	    (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
			return err;

	val = nr64_mac(XMAC_CONFIG);
	val &= ~XMAC_CONFIG_LED_POLARITY;
	val |= XMAC_CONFIG_FORCE_LED_ON;
	nw64_mac(XMAC_CONFIG, val);

	val = nr64(MIF_CONFIG);
	val |= MIF_CONFIG_INDIRECT_MODE;
	nw64(MIF_CONFIG, val);

	err = bcm8704_reset(np);
	if (err)
		return err;

	err = xcvr_10g_set_lb_bcm870x(np);
	if (err)
		return err;

	err = bcm8706_init_user_dev3(np);
	if (err)
		return err;

	err = xcvr_diag_bcm870x(np);
	if (err)
		return err;

	return 0;
}

static int xcvr_init_10g_bcm8704(struct niu *np)
{
	int err;

	err = bcm8704_reset(np);
	if (err)
		return err;

	err = bcm8704_init_user_dev3(np);
	if (err)
		return err;

	err = xcvr_10g_set_lb_bcm870x(np);
	if (err)
		return err;

	err =  xcvr_diag_bcm870x(np);
	if (err)
		return err;

	return 0;
}

M
Mirko Lindner 已提交
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640
static int xcvr_init_10g(struct niu *np)
{
	int phy_id, err;
	u64 val;

	val = nr64_mac(XMAC_CONFIG);
	val &= ~XMAC_CONFIG_LED_POLARITY;
	val |= XMAC_CONFIG_FORCE_LED_ON;
	nw64_mac(XMAC_CONFIG, val);

	/* XXX shared resource, lock parent XXX */
	val = nr64(MIF_CONFIG);
	val |= MIF_CONFIG_INDIRECT_MODE;
	nw64(MIF_CONFIG, val);

	phy_id = phy_decode(np->parent->port_phy, np->port);
	phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];

	/* handle different phy types */
	switch (phy_id & NIU_PHY_ID_MASK) {
	case NIU_PHY_ID_MRVL88X2011:
		err = xcvr_init_10g_mrvl88x2011(np);
		break;

	default: /* bcom 8704 */
		err = xcvr_init_10g_bcm8704(np);
		break;
	}

1641
	return err;
M
Mirko Lindner 已提交
1642 1643
}

1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661
static int mii_reset(struct niu *np)
{
	int limit, err;

	err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
	if (err)
		return err;

	limit = 1000;
	while (--limit >= 0) {
		udelay(500);
		err = mii_read(np, np->phy_addr, MII_BMCR);
		if (err < 0)
			return err;
		if (!(err & BMCR_RESET))
			break;
	}
	if (limit < 0) {
1662 1663
		netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
			   np->port, err);
1664 1665 1666 1667 1668 1669
		return -ENODEV;
	}

	return 0;
}

1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729
static int xcvr_init_1g_rgmii(struct niu *np)
{
	int err;
	u64 val;
	u16 bmcr, bmsr, estat;

	val = nr64(MIF_CONFIG);
	val &= ~MIF_CONFIG_INDIRECT_MODE;
	nw64(MIF_CONFIG, val);

	err = mii_reset(np);
	if (err)
		return err;

	err = mii_read(np, np->phy_addr, MII_BMSR);
	if (err < 0)
		return err;
	bmsr = err;

	estat = 0;
	if (bmsr & BMSR_ESTATEN) {
		err = mii_read(np, np->phy_addr, MII_ESTATUS);
		if (err < 0)
			return err;
		estat = err;
	}

	bmcr = 0;
	err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
	if (err)
		return err;

	if (bmsr & BMSR_ESTATEN) {
		u16 ctrl1000 = 0;

		if (estat & ESTATUS_1000_TFULL)
			ctrl1000 |= ADVERTISE_1000FULL;
		err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
		if (err)
			return err;
	}

	bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);

	err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
	if (err)
		return err;

	err = mii_read(np, np->phy_addr, MII_BMCR);
	if (err < 0)
		return err;
	bmcr = mii_read(np, np->phy_addr, MII_BMCR);

	err = mii_read(np, np->phy_addr, MII_BMSR);
	if (err < 0)
		return err;

	return 0;
}

1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775
static int mii_init_common(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	u16 bmcr, bmsr, adv, estat;
	int err;

	err = mii_reset(np);
	if (err)
		return err;

	err = mii_read(np, np->phy_addr, MII_BMSR);
	if (err < 0)
		return err;
	bmsr = err;

	estat = 0;
	if (bmsr & BMSR_ESTATEN) {
		err = mii_read(np, np->phy_addr, MII_ESTATUS);
		if (err < 0)
			return err;
		estat = err;
	}

	bmcr = 0;
	err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
	if (err)
		return err;

	if (lp->loopback_mode == LOOPBACK_MAC) {
		bmcr |= BMCR_LOOPBACK;
		if (lp->active_speed == SPEED_1000)
			bmcr |= BMCR_SPEED1000;
		if (lp->active_duplex == DUPLEX_FULL)
			bmcr |= BMCR_FULLDPLX;
	}

	if (lp->loopback_mode == LOOPBACK_PHY) {
		u16 aux;

		aux = (BCM5464R_AUX_CTL_EXT_LB |
		       BCM5464R_AUX_CTL_WRITE_1);
		err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
		if (err)
			return err;
	}

1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792
	if (lp->autoneg) {
		u16 ctrl1000;

		adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
		if ((bmsr & BMSR_10HALF) &&
			(lp->advertising & ADVERTISED_10baseT_Half))
			adv |= ADVERTISE_10HALF;
		if ((bmsr & BMSR_10FULL) &&
			(lp->advertising & ADVERTISED_10baseT_Full))
			adv |= ADVERTISE_10FULL;
		if ((bmsr & BMSR_100HALF) &&
			(lp->advertising & ADVERTISED_100baseT_Half))
			adv |= ADVERTISE_100HALF;
		if ((bmsr & BMSR_100FULL) &&
			(lp->advertising & ADVERTISED_100baseT_Full))
			adv |= ADVERTISE_100FULL;
		err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1793 1794
		if (err)
			return err;
1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840

		if (likely(bmsr & BMSR_ESTATEN)) {
			ctrl1000 = 0;
			if ((estat & ESTATUS_1000_THALF) &&
				(lp->advertising & ADVERTISED_1000baseT_Half))
				ctrl1000 |= ADVERTISE_1000HALF;
			if ((estat & ESTATUS_1000_TFULL) &&
				(lp->advertising & ADVERTISED_1000baseT_Full))
				ctrl1000 |= ADVERTISE_1000FULL;
			err = mii_write(np, np->phy_addr,
					MII_CTRL1000, ctrl1000);
			if (err)
				return err;
		}

		bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
	} else {
		/* !lp->autoneg */
		int fulldpx;

		if (lp->duplex == DUPLEX_FULL) {
			bmcr |= BMCR_FULLDPLX;
			fulldpx = 1;
		} else if (lp->duplex == DUPLEX_HALF)
			fulldpx = 0;
		else
			return -EINVAL;

		if (lp->speed == SPEED_1000) {
			/* if X-full requested while not supported, or
			   X-half requested while not supported... */
			if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
				(!fulldpx && !(estat & ESTATUS_1000_THALF)))
				return -EINVAL;
			bmcr |= BMCR_SPEED1000;
		} else if (lp->speed == SPEED_100) {
			if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
				(!fulldpx && !(bmsr & BMSR_100HALF)))
				return -EINVAL;
			bmcr |= BMCR_SPEED100;
		} else if (lp->speed == SPEED_10) {
			if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
				(!fulldpx && !(bmsr & BMSR_10HALF)))
				return -EINVAL;
		} else
			return -EINVAL;
1841 1842 1843 1844 1845 1846
	}

	err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
	if (err)
		return err;

1847
#if 0
1848 1849 1850
	err = mii_read(np, np->phy_addr, MII_BMCR);
	if (err < 0)
		return err;
1851 1852
	bmcr = err;

1853 1854 1855
	err = mii_read(np, np->phy_addr, MII_BMSR);
	if (err < 0)
		return err;
1856 1857
	bmsr = err;

1858
	pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901
		np->port, bmcr, bmsr);
#endif

	return 0;
}

static int xcvr_init_1g(struct niu *np)
{
	u64 val;

	/* XXX shared resource, lock parent XXX */
	val = nr64(MIF_CONFIG);
	val &= ~MIF_CONFIG_INDIRECT_MODE;
	nw64(MIF_CONFIG, val);

	return mii_init_common(np);
}

static int niu_xcvr_init(struct niu *np)
{
	const struct niu_phy_ops *ops = np->phy_ops;
	int err;

	err = 0;
	if (ops->xcvr_init)
		err = ops->xcvr_init(np);

	return err;
}

static int niu_serdes_init(struct niu *np)
{
	const struct niu_phy_ops *ops = np->phy_ops;
	int err;

	err = 0;
	if (ops->serdes_init)
		err = ops->serdes_init(np);

	return err;
}

static void niu_init_xif(struct niu *);
M
Mirko Lindner 已提交
1902
static void niu_handle_led(struct niu *, int status);
1903 1904 1905 1906 1907 1908 1909 1910

static int niu_link_status_common(struct niu *np, int link_up)
{
	struct niu_link_config *lp = &np->link_config;
	struct net_device *dev = np->dev;
	unsigned long flags;

	if (!netif_carrier_ok(dev) && link_up) {
1911 1912 1913 1914 1915 1916
		netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
			   lp->active_speed == SPEED_10000 ? "10Gb/sec" :
			   lp->active_speed == SPEED_1000 ? "1Gb/sec" :
			   lp->active_speed == SPEED_100 ? "100Mbit/sec" :
			   "10Mbit/sec",
			   lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1917 1918 1919

		spin_lock_irqsave(&np->lock, flags);
		niu_init_xif(np);
M
Mirko Lindner 已提交
1920
		niu_handle_led(np, 1);
1921 1922 1923 1924
		spin_unlock_irqrestore(&np->lock, flags);

		netif_carrier_on(dev);
	} else if (netif_carrier_ok(dev) && !link_up) {
1925
		netif_warn(np, link, dev, "Link is down\n");
M
Mirko Lindner 已提交
1926 1927 1928
		spin_lock_irqsave(&np->lock, flags);
		niu_handle_led(np, 0);
		spin_unlock_irqrestore(&np->lock, flags);
1929 1930 1931 1932 1933 1934
		netif_carrier_off(dev);
	}

	return 0;
}

M
Mirko Lindner 已提交
1935
static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1936
{
M
Mirko Lindner 已提交
1937
	int err, link_up, pma_status, pcs_status;
1938 1939 1940

	link_up = 0;

M
Mirko Lindner 已提交
1941 1942 1943 1944
	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
			MRVL88X2011_10G_PMD_STATUS_2);
	if (err < 0)
		goto out;
1945

M
Mirko Lindner 已提交
1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
	/* Check PMA/PMD Register: 1.0001.2 == 1 */
	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
			MRVL88X2011_PMA_PMD_STATUS_1);
	if (err < 0)
		goto out;

	pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);

        /* Check PMC Register : 3.0001.2 == 1: read twice */
	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
			MRVL88X2011_PMA_PMD_STATUS_1);
	if (err < 0)
		goto out;

	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
			MRVL88X2011_PMA_PMD_STATUS_1);
	if (err < 0)
		goto out;

	pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);

        /* Check XGXS Register : 4.0018.[0-3,12] */
	err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
			MRVL88X2011_10G_XGXS_LANE_STAT);
	if (err < 0)
1971 1972
		goto out;

M
Mirko Lindner 已提交
1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
	if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
		    PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
		    PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
		    0x800))
		link_up = (pma_status && pcs_status) ? 1 : 0;

	np->link_config.active_speed = SPEED_10000;
	np->link_config.active_duplex = DUPLEX_FULL;
	err = 0;
out:
	mrvl88x2011_act_led(np, (link_up ?
				 MRVL88X2011_LED_CTL_PCS_ACT :
				 MRVL88X2011_LED_CTL_OFF));

	*link_up_p = link_up;
	return err;
}

1991 1992 1993 1994 1995 1996 1997
static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
{
	int err, link_up;
	link_up = 0;

	err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
			BCM8704_PMD_RCV_SIGDET);
T
Tanli Chang 已提交
1998
	if (err < 0 || err == 0xffff)
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041
		goto out;
	if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
		err = 0;
		goto out;
	}

	err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
			BCM8704_PCS_10G_R_STATUS);
	if (err < 0)
		goto out;

	if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
		err = 0;
		goto out;
	}

	err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
			BCM8704_PHYXS_XGXS_LANE_STAT);
	if (err < 0)
		goto out;
	if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
		    PHYXS_XGXS_LANE_STAT_MAGIC |
		    PHYXS_XGXS_LANE_STAT_PATTEST |
		    PHYXS_XGXS_LANE_STAT_LANE3 |
		    PHYXS_XGXS_LANE_STAT_LANE2 |
		    PHYXS_XGXS_LANE_STAT_LANE1 |
		    PHYXS_XGXS_LANE_STAT_LANE0)) {
		err = 0;
		np->link_config.active_speed = SPEED_INVALID;
		np->link_config.active_duplex = DUPLEX_INVALID;
		goto out;
	}

	link_up = 1;
	np->link_config.active_speed = SPEED_10000;
	np->link_config.active_duplex = DUPLEX_FULL;
	err = 0;

out:
	*link_up_p = link_up;
	return err;
}

M
Mirko Lindner 已提交
2042 2043 2044 2045 2046 2047
static int link_status_10g_bcom(struct niu *np, int *link_up_p)
{
	int err, link_up;

	link_up = 0;

2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086
	err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
			BCM8704_PMD_RCV_SIGDET);
	if (err < 0)
		goto out;
	if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
		err = 0;
		goto out;
	}

	err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
			BCM8704_PCS_10G_R_STATUS);
	if (err < 0)
		goto out;
	if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
		err = 0;
		goto out;
	}

	err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
			BCM8704_PHYXS_XGXS_LANE_STAT);
	if (err < 0)
		goto out;

	if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
		    PHYXS_XGXS_LANE_STAT_MAGIC |
		    PHYXS_XGXS_LANE_STAT_LANE3 |
		    PHYXS_XGXS_LANE_STAT_LANE2 |
		    PHYXS_XGXS_LANE_STAT_LANE1 |
		    PHYXS_XGXS_LANE_STAT_LANE0)) {
		err = 0;
		goto out;
	}

	link_up = 1;
	np->link_config.active_speed = SPEED_10000;
	np->link_config.active_duplex = DUPLEX_FULL;
	err = 0;

out:
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Mirko Lindner 已提交
2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115
	*link_up_p = link_up;
	return err;
}

static int link_status_10g(struct niu *np, int *link_up_p)
{
	unsigned long flags;
	int err = -EINVAL;

	spin_lock_irqsave(&np->lock, flags);

	if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
		int phy_id;

		phy_id = phy_decode(np->parent->port_phy, np->port);
		phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];

		/* handle different phy types */
		switch (phy_id & NIU_PHY_ID_MASK) {
		case NIU_PHY_ID_MRVL88X2011:
			err = link_status_10g_mrvl(np, link_up_p);
			break;

		default: /* bcom 8704 */
			err = link_status_10g_bcom(np, link_up_p);
			break;
		}
	}

2116 2117 2118 2119 2120
	spin_unlock_irqrestore(&np->lock, flags);

	return err;
}

2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173
static int niu_10g_phy_present(struct niu *np)
{
	u64 sig, mask, val;

	sig = nr64(ESR_INT_SIGNALS);
	switch (np->port) {
	case 0:
		mask = ESR_INT_SIGNALS_P0_BITS;
		val = (ESR_INT_SRDY0_P0 |
		       ESR_INT_DET0_P0 |
		       ESR_INT_XSRDY_P0 |
		       ESR_INT_XDP_P0_CH3 |
		       ESR_INT_XDP_P0_CH2 |
		       ESR_INT_XDP_P0_CH1 |
		       ESR_INT_XDP_P0_CH0);
		break;

	case 1:
		mask = ESR_INT_SIGNALS_P1_BITS;
		val = (ESR_INT_SRDY0_P1 |
		       ESR_INT_DET0_P1 |
		       ESR_INT_XSRDY_P1 |
		       ESR_INT_XDP_P1_CH3 |
		       ESR_INT_XDP_P1_CH2 |
		       ESR_INT_XDP_P1_CH1 |
		       ESR_INT_XDP_P1_CH0);
		break;

	default:
		return 0;
	}

	if ((sig & mask) != val)
		return 0;
	return 1;
}

static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
{
	unsigned long flags;
	int err = 0;
	int phy_present;
	int phy_present_prev;

	spin_lock_irqsave(&np->lock, flags);

	if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
		phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
			1 : 0;
		phy_present = niu_10g_phy_present(np);
		if (phy_present != phy_present_prev) {
			/* state change */
			if (phy_present) {
T
Tanli Chang 已提交
2174
				/* A NEM was just plugged in */
2175 2176 2177 2178
				np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
				if (np->phy_ops->xcvr_init)
					err = np->phy_ops->xcvr_init(np);
				if (err) {
T
Tanli Chang 已提交
2179 2180 2181 2182 2183 2184
					err = mdio_read(np, np->phy_addr,
						BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
					if (err == 0xffff) {
						/* No mdio, back-to-back XAUI */
						goto out;
					}
2185 2186 2187 2188 2189 2190
					/* debounce */
					np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
				}
			} else {
				np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
				*link_up_p = 0;
2191 2192
				netif_warn(np, link, np->dev,
					   "Hotplug PHY Removed\n");
2193 2194
			}
		}
T
Tanli Chang 已提交
2195 2196
out:
		if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2197
			err = link_status_10g_bcm8706(np, link_up_p);
T
Tanli Chang 已提交
2198 2199 2200 2201 2202 2203 2204
			if (err == 0xffff) {
				/* No mdio, back-to-back XAUI: it is C10NEM */
				*link_up_p = 1;
				np->link_config.active_speed = SPEED_10000;
				np->link_config.active_duplex = DUPLEX_FULL;
			}
		}
2205 2206 2207 2208
	}

	spin_unlock_irqrestore(&np->lock, flags);

T
Tanli Chang 已提交
2209
	return 0;
2210 2211
}

2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242
static int niu_link_status(struct niu *np, int *link_up_p)
{
	const struct niu_phy_ops *ops = np->phy_ops;
	int err;

	err = 0;
	if (ops->link_status)
		err = ops->link_status(np, link_up_p);

	return err;
}

static void niu_timer(unsigned long __opaque)
{
	struct niu *np = (struct niu *) __opaque;
	unsigned long off;
	int err, link_up;

	err = niu_link_status(np, &link_up);
	if (!err)
		niu_link_status_common(np, link_up);

	if (netif_carrier_ok(np->dev))
		off = 5 * HZ;
	else
		off = 1 * HZ;
	np->timer.expires = jiffies + off;

	add_timer(&np->timer);
}

2243 2244 2245 2246 2247
static const struct niu_phy_ops phy_ops_10g_serdes = {
	.serdes_init		= serdes_init_10g_serdes,
	.link_status		= link_status_10g_serdes,
};

2248 2249 2250 2251 2252 2253 2254 2255 2256 2257
static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
	.serdes_init		= serdes_init_niu_10g_serdes,
	.link_status		= link_status_10g_serdes,
};

static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
	.serdes_init		= serdes_init_niu_1g_serdes,
	.link_status		= link_status_1g_serdes,
};

2258 2259 2260 2261 2262
static const struct niu_phy_ops phy_ops_1g_rgmii = {
	.xcvr_init		= xcvr_init_1g_rgmii,
	.link_status		= link_status_1g_rgmii,
};

2263
static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2264
	.serdes_init		= serdes_init_niu_10g_fiber,
2265 2266 2267 2268 2269 2270 2271 2272 2273 2274
	.xcvr_init		= xcvr_init_10g,
	.link_status		= link_status_10g,
};

static const struct niu_phy_ops phy_ops_10g_fiber = {
	.serdes_init		= serdes_init_10g,
	.xcvr_init		= xcvr_init_10g,
	.link_status		= link_status_10g,
};

2275 2276 2277 2278 2279 2280
static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
	.serdes_init		= serdes_init_10g,
	.xcvr_init		= xcvr_init_10g_bcm8706,
	.link_status		= link_status_10g_hotplug,
};

T
Tanli Chang 已提交
2281 2282 2283 2284 2285 2286
static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
	.serdes_init		= serdes_init_niu_10g_fiber,
	.xcvr_init		= xcvr_init_10g_bcm8706,
	.link_status		= link_status_10g_hotplug,
};

2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307
static const struct niu_phy_ops phy_ops_10g_copper = {
	.serdes_init		= serdes_init_10g,
	.link_status		= link_status_10g, /* XXX */
};

static const struct niu_phy_ops phy_ops_1g_fiber = {
	.serdes_init		= serdes_init_1g,
	.xcvr_init		= xcvr_init_1g,
	.link_status		= link_status_1g,
};

static const struct niu_phy_ops phy_ops_1g_copper = {
	.xcvr_init		= xcvr_init_1g,
	.link_status		= link_status_1g,
};

struct niu_phy_template {
	const struct niu_phy_ops	*ops;
	u32				phy_addr_base;
};

2308
static const struct niu_phy_template phy_template_niu_10g_fiber = {
2309 2310 2311 2312
	.ops		= &phy_ops_10g_fiber_niu,
	.phy_addr_base	= 16,
};

2313 2314 2315 2316 2317 2318 2319 2320 2321 2322
static const struct niu_phy_template phy_template_niu_10g_serdes = {
	.ops		= &phy_ops_10g_serdes_niu,
	.phy_addr_base	= 0,
};

static const struct niu_phy_template phy_template_niu_1g_serdes = {
	.ops		= &phy_ops_1g_serdes_niu,
	.phy_addr_base	= 0,
};

2323 2324 2325 2326 2327
static const struct niu_phy_template phy_template_10g_fiber = {
	.ops		= &phy_ops_10g_fiber,
	.phy_addr_base	= 8,
};

2328 2329 2330 2331 2332
static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
	.ops		= &phy_ops_10g_fiber_hotplug,
	.phy_addr_base	= 8,
};

T
Tanli Chang 已提交
2333 2334 2335 2336 2337
static const struct niu_phy_template phy_template_niu_10g_hotplug = {
	.ops		= &phy_ops_niu_10g_hotplug,
	.phy_addr_base	= 8,
};

2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352
static const struct niu_phy_template phy_template_10g_copper = {
	.ops		= &phy_ops_10g_copper,
	.phy_addr_base	= 10,
};

static const struct niu_phy_template phy_template_1g_fiber = {
	.ops		= &phy_ops_1g_fiber,
	.phy_addr_base	= 0,
};

static const struct niu_phy_template phy_template_1g_copper = {
	.ops		= &phy_ops_1g_copper,
	.phy_addr_base	= 0,
};

2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420
static const struct niu_phy_template phy_template_1g_rgmii = {
	.ops		= &phy_ops_1g_rgmii,
	.phy_addr_base	= 0,
};

static const struct niu_phy_template phy_template_10g_serdes = {
	.ops		= &phy_ops_10g_serdes,
	.phy_addr_base	= 0,
};

static int niu_atca_port_num[4] = {
	0, 0,  11, 10
};

static int serdes_init_10g_serdes(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
	u64 ctrl_val, test_cfg_val, sig, mask, val;

	switch (np->port) {
	case 0:
		ctrl_reg = ENET_SERDES_0_CTRL_CFG;
		test_cfg_reg = ENET_SERDES_0_TEST_CFG;
		pll_cfg = ENET_SERDES_0_PLL_CFG;
		break;
	case 1:
		ctrl_reg = ENET_SERDES_1_CTRL_CFG;
		test_cfg_reg = ENET_SERDES_1_TEST_CFG;
		pll_cfg = ENET_SERDES_1_PLL_CFG;
		break;

	default:
		return -EINVAL;
	}
	ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
		    ENET_SERDES_CTRL_SDET_1 |
		    ENET_SERDES_CTRL_SDET_2 |
		    ENET_SERDES_CTRL_SDET_3 |
		    (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
		    (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
		    (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
	test_cfg_val = 0;

	if (lp->loopback_mode == LOOPBACK_PHY) {
		test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_0_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_1_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_2_SHIFT) |
				 (ENET_TEST_MD_PAD_LOOPBACK <<
				  ENET_SERDES_TEST_MD_3_SHIFT));
	}

	esr_reset(np);
	nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
	nw64(ctrl_reg, ctrl_val);
	nw64(test_cfg_reg, test_cfg_val);

	/* Initialize all 4 lanes of the SERDES.  */
	for (i = 0; i < 4; i++) {
		u32 rxtx_ctrl, glue0;
2421
		int err;
2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486

		err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
		if (err)
			return err;
		err = esr_read_glue0(np, i, &glue0);
		if (err)
			return err;

		rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
		rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
			      (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));

		glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
			   ESR_GLUE_CTRL0_THCNT |
			   ESR_GLUE_CTRL0_BLTIME);
		glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
			  (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
			  (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
			  (BLTIME_300_CYCLES <<
			   ESR_GLUE_CTRL0_BLTIME_SHIFT));

		err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
		if (err)
			return err;
		err = esr_write_glue0(np, i, glue0);
		if (err)
			return err;
	}


	sig = nr64(ESR_INT_SIGNALS);
	switch (np->port) {
	case 0:
		mask = ESR_INT_SIGNALS_P0_BITS;
		val = (ESR_INT_SRDY0_P0 |
		       ESR_INT_DET0_P0 |
		       ESR_INT_XSRDY_P0 |
		       ESR_INT_XDP_P0_CH3 |
		       ESR_INT_XDP_P0_CH2 |
		       ESR_INT_XDP_P0_CH1 |
		       ESR_INT_XDP_P0_CH0);
		break;

	case 1:
		mask = ESR_INT_SIGNALS_P1_BITS;
		val = (ESR_INT_SRDY0_P1 |
		       ESR_INT_DET0_P1 |
		       ESR_INT_XSRDY_P1 |
		       ESR_INT_XDP_P1_CH3 |
		       ESR_INT_XDP_P1_CH2 |
		       ESR_INT_XDP_P1_CH1 |
		       ESR_INT_XDP_P1_CH0);
		break;

	default:
		return -EINVAL;
	}

	if ((sig & mask) != val) {
		int err;
		err = serdes_init_1g_serdes(np);
		if (!err) {
			np->flags &= ~NIU_FLAGS_10G;
			np->mac_xcvr = MAC_XCVR_PCS;
		}  else {
2487 2488
			netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
				   np->port);
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			return -ENODEV;
		}
	}

	return 0;
}

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static int niu_determine_phy_disposition(struct niu *np)
{
	struct niu_parent *parent = np->parent;
	u8 plat_type = parent->plat_type;
	const struct niu_phy_template *tp;
	u32 phy_addr_off = 0;

	if (plat_type == PLAT_TYPE_NIU) {
2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518
		switch (np->flags &
			(NIU_FLAGS_10G |
			 NIU_FLAGS_FIBER |
			 NIU_FLAGS_XCVR_SERDES)) {
		case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
			/* 10G Serdes */
			tp = &phy_template_niu_10g_serdes;
			break;
		case NIU_FLAGS_XCVR_SERDES:
			/* 1G Serdes */
			tp = &phy_template_niu_1g_serdes;
			break;
		case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
			/* 10G Fiber */
		default:
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			if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
				tp = &phy_template_niu_10g_hotplug;
				if (np->port == 0)
					phy_addr_off = 8;
				if (np->port == 1)
					phy_addr_off = 12;
			} else {
				tp = &phy_template_niu_10g_fiber;
				phy_addr_off += np->port;
			}
2529 2530
			break;
		}
2531
	} else {
2532 2533 2534 2535
		switch (np->flags &
			(NIU_FLAGS_10G |
			 NIU_FLAGS_FIBER |
			 NIU_FLAGS_XCVR_SERDES)) {
2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548
		case 0:
			/* 1G copper */
			tp = &phy_template_1g_copper;
			if (plat_type == PLAT_TYPE_VF_P0)
				phy_addr_off = 10;
			else if (plat_type == PLAT_TYPE_VF_P1)
				phy_addr_off = 26;

			phy_addr_off += (np->port ^ 0x3);
			break;

		case NIU_FLAGS_10G:
			/* 10G copper */
2549
			tp = &phy_template_10g_copper;
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			break;

		case NIU_FLAGS_FIBER:
			/* 1G fiber */
			tp = &phy_template_1g_fiber;
			break;

		case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
			/* 10G fiber */
			tp = &phy_template_10g_fiber;
			if (plat_type == PLAT_TYPE_VF_P0 ||
			    plat_type == PLAT_TYPE_VF_P1)
				phy_addr_off = 8;
			phy_addr_off += np->port;
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			if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
				tp = &phy_template_10g_fiber_hotplug;
				if (np->port == 0)
					phy_addr_off = 8;
				if (np->port == 1)
					phy_addr_off = 12;
			}
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			break;

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		case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
		case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
		case NIU_FLAGS_XCVR_SERDES:
			switch(np->port) {
			case 0:
			case 1:
				tp = &phy_template_10g_serdes;
				break;
			case 2:
			case 3:
				tp = &phy_template_1g_rgmii;
				break;
			default:
				return -EINVAL;
			}
			phy_addr_off = niu_atca_port_num[np->port];
			break;

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		default:
			return -EINVAL;
		}
	}

	np->phy_ops = tp->ops;
	np->phy_addr = tp->phy_addr_base + phy_addr_off;

	return 0;
}

static int niu_init_link(struct niu *np)
{
	struct niu_parent *parent = np->parent;
	int err, ignore;

	if (parent->plat_type == PLAT_TYPE_NIU) {
		err = niu_xcvr_init(np);
		if (err)
			return err;
		msleep(200);
	}
	err = niu_serdes_init(np);
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	if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
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		return err;
	msleep(200);
	err = niu_xcvr_init(np);
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	if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
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		niu_link_status(np, &ignore);
	return 0;
}

static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
{
	u16 reg0 = addr[4] << 8 | addr[5];
	u16 reg1 = addr[2] << 8 | addr[3];
	u16 reg2 = addr[0] << 8 | addr[1];

	if (np->flags & NIU_FLAGS_XMAC) {
		nw64_mac(XMAC_ADDR0, reg0);
		nw64_mac(XMAC_ADDR1, reg1);
		nw64_mac(XMAC_ADDR2, reg2);
	} else {
		nw64_mac(BMAC_ADDR0, reg0);
		nw64_mac(BMAC_ADDR1, reg1);
		nw64_mac(BMAC_ADDR2, reg2);
	}
}

static int niu_num_alt_addr(struct niu *np)
{
	if (np->flags & NIU_FLAGS_XMAC)
		return XMAC_NUM_ALT_ADDR;
	else
		return BMAC_NUM_ALT_ADDR;
}

static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
{
	u16 reg0 = addr[4] << 8 | addr[5];
	u16 reg1 = addr[2] << 8 | addr[3];
	u16 reg2 = addr[0] << 8 | addr[1];

	if (index >= niu_num_alt_addr(np))
		return -EINVAL;

	if (np->flags & NIU_FLAGS_XMAC) {
		nw64_mac(XMAC_ALT_ADDR0(index), reg0);
		nw64_mac(XMAC_ALT_ADDR1(index), reg1);
		nw64_mac(XMAC_ALT_ADDR2(index), reg2);
	} else {
		nw64_mac(BMAC_ALT_ADDR0(index), reg0);
		nw64_mac(BMAC_ALT_ADDR1(index), reg1);
		nw64_mac(BMAC_ALT_ADDR2(index), reg2);
	}

	return 0;
}

static int niu_enable_alt_mac(struct niu *np, int index, int on)
{
	unsigned long reg;
	u64 val, mask;

	if (index >= niu_num_alt_addr(np))
		return -EINVAL;

2678
	if (np->flags & NIU_FLAGS_XMAC) {
2679
		reg = XMAC_ADDR_CMPEN;
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		mask = 1 << index;
	} else {
2682
		reg = BMAC_ADDR_CMPEN;
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		mask = 1 << (index + 1);
	}
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	val = nr64_mac(reg);
	if (on)
		val |= mask;
	else
		val &= ~mask;
	nw64_mac(reg, val);

	return 0;
}

static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
				   int num, int mac_pref)
{
	u64 val = nr64_mac(reg);
	val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
	val |= num;
	if (mac_pref)
		val |= HOST_INFO_MPR;
	nw64_mac(reg, val);
}

static int __set_rdc_table_num(struct niu *np,
			       int xmac_index, int bmac_index,
			       int rdc_table_num, int mac_pref)
{
	unsigned long reg;

	if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
		return -EINVAL;
	if (np->flags & NIU_FLAGS_XMAC)
		reg = XMAC_HOST_INFO(xmac_index);
	else
		reg = BMAC_HOST_INFO(bmac_index);
	__set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
	return 0;
}

static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
					 int mac_pref)
{
	return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
}

static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
					   int mac_pref)
{
	return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
}

static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
				     int table_num, int mac_pref)
{
	if (idx >= niu_num_alt_addr(np))
		return -EINVAL;
	return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
}

static u64 vlan_entry_set_parity(u64 reg_val)
{
	u64 port01_mask;
	u64 port23_mask;

	port01_mask = 0x00ff;
	port23_mask = 0xff00;

	if (hweight64(reg_val & port01_mask) & 1)
		reg_val |= ENET_VLAN_TBL_PARITY0;
	else
		reg_val &= ~ENET_VLAN_TBL_PARITY0;

	if (hweight64(reg_val & port23_mask) & 1)
		reg_val |= ENET_VLAN_TBL_PARITY1;
	else
		reg_val &= ~ENET_VLAN_TBL_PARITY1;

	return reg_val;
}

static void vlan_tbl_write(struct niu *np, unsigned long index,
			   int port, int vpr, int rdc_table)
{
	u64 reg_val = nr64(ENET_VLAN_TBL(index));

	reg_val &= ~((ENET_VLAN_TBL_VPR |
		      ENET_VLAN_TBL_VLANRDCTBLN) <<
		     ENET_VLAN_TBL_SHIFT(port));
	if (vpr)
		reg_val |= (ENET_VLAN_TBL_VPR <<
			    ENET_VLAN_TBL_SHIFT(port));
	reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));

	reg_val = vlan_entry_set_parity(reg_val);

	nw64(ENET_VLAN_TBL(index), reg_val);
}

static void vlan_tbl_clear(struct niu *np)
{
	int i;

	for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
		nw64(ENET_VLAN_TBL(i), 0);
}

static int tcam_wait_bit(struct niu *np, u64 bit)
{
	int limit = 1000;

	while (--limit > 0) {
		if (nr64(TCAM_CTL) & bit)
			break;
		udelay(1);
	}
2799
	if (limit <= 0)
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		return -ENODEV;

	return 0;
}

static int tcam_flush(struct niu *np, int index)
{
	nw64(TCAM_KEY_0, 0x00);
	nw64(TCAM_KEY_MASK_0, 0xff);
	nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));

	return tcam_wait_bit(np, TCAM_CTL_STAT);
}

#if 0
static int tcam_read(struct niu *np, int index,
		     u64 *key, u64 *mask)
{
	int err;

	nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
	err = tcam_wait_bit(np, TCAM_CTL_STAT);
	if (!err) {
		key[0] = nr64(TCAM_KEY_0);
		key[1] = nr64(TCAM_KEY_1);
		key[2] = nr64(TCAM_KEY_2);
		key[3] = nr64(TCAM_KEY_3);
		mask[0] = nr64(TCAM_KEY_MASK_0);
		mask[1] = nr64(TCAM_KEY_MASK_1);
		mask[2] = nr64(TCAM_KEY_MASK_2);
		mask[3] = nr64(TCAM_KEY_MASK_3);
	}
	return err;
}
#endif

static int tcam_write(struct niu *np, int index,
		      u64 *key, u64 *mask)
{
	nw64(TCAM_KEY_0, key[0]);
	nw64(TCAM_KEY_1, key[1]);
	nw64(TCAM_KEY_2, key[2]);
	nw64(TCAM_KEY_3, key[3]);
	nw64(TCAM_KEY_MASK_0, mask[0]);
	nw64(TCAM_KEY_MASK_1, mask[1]);
	nw64(TCAM_KEY_MASK_2, mask[2]);
	nw64(TCAM_KEY_MASK_3, mask[3]);
	nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));

	return tcam_wait_bit(np, TCAM_CTL_STAT);
}

#if 0
static int tcam_assoc_read(struct niu *np, int index, u64 *data)
{
	int err;

	nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
	err = tcam_wait_bit(np, TCAM_CTL_STAT);
	if (!err)
		*data = nr64(TCAM_KEY_1);

	return err;
}
#endif

static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
{
	nw64(TCAM_KEY_1, assoc_data);
	nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));

	return tcam_wait_bit(np, TCAM_CTL_STAT);
}

static void tcam_enable(struct niu *np, int on)
{
	u64 val = nr64(FFLP_CFG_1);

	if (on)
		val &= ~FFLP_CFG_1_TCAM_DIS;
	else
		val |= FFLP_CFG_1_TCAM_DIS;
	nw64(FFLP_CFG_1, val);
}

static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
{
	u64 val = nr64(FFLP_CFG_1);

	val &= ~(FFLP_CFG_1_FFLPINITDONE |
		 FFLP_CFG_1_CAMLAT |
		 FFLP_CFG_1_CAMRATIO);
	val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
	val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
	nw64(FFLP_CFG_1, val);

	val = nr64(FFLP_CFG_1);
	val |= FFLP_CFG_1_FFLPINITDONE;
	nw64(FFLP_CFG_1, val);
}

static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
				      int on)
{
	unsigned long reg;
	u64 val;

	if (class < CLASS_CODE_ETHERTYPE1 ||
	    class > CLASS_CODE_ETHERTYPE2)
		return -EINVAL;

	reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
	val = nr64(reg);
	if (on)
		val |= L2_CLS_VLD;
	else
		val &= ~L2_CLS_VLD;
	nw64(reg, val);

	return 0;
}

#if 0
static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
				   u64 ether_type)
{
	unsigned long reg;
	u64 val;

	if (class < CLASS_CODE_ETHERTYPE1 ||
	    class > CLASS_CODE_ETHERTYPE2 ||
	    (ether_type & ~(u64)0xffff) != 0)
		return -EINVAL;

	reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
	val = nr64(reg);
	val &= ~L2_CLS_ETYPE;
	val |= (ether_type << L2_CLS_ETYPE_SHIFT);
	nw64(reg, val);

	return 0;
}
#endif

static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
				     int on)
{
	unsigned long reg;
	u64 val;

	if (class < CLASS_CODE_USER_PROG1 ||
	    class > CLASS_CODE_USER_PROG4)
		return -EINVAL;

	reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
	val = nr64(reg);
	if (on)
		val |= L3_CLS_VALID;
	else
		val &= ~L3_CLS_VALID;
	nw64(reg, val);

	return 0;
}

static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
				  int ipv6, u64 protocol_id,
				  u64 tos_mask, u64 tos_val)
{
	unsigned long reg;
	u64 val;

	if (class < CLASS_CODE_USER_PROG1 ||
	    class > CLASS_CODE_USER_PROG4 ||
	    (protocol_id & ~(u64)0xff) != 0 ||
	    (tos_mask & ~(u64)0xff) != 0 ||
	    (tos_val & ~(u64)0xff) != 0)
		return -EINVAL;

	reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
	val = nr64(reg);
	val &= ~(L3_CLS_IPVER | L3_CLS_PID |
		 L3_CLS_TOSMASK | L3_CLS_TOS);
	if (ipv6)
		val |= L3_CLS_IPVER;
	val |= (protocol_id << L3_CLS_PID_SHIFT);
	val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
	val |= (tos_val << L3_CLS_TOS_SHIFT);
	nw64(reg, val);

	return 0;
}

static int tcam_early_init(struct niu *np)
{
	unsigned long i;
	int err;

	tcam_enable(np, 0);
	tcam_set_lat_and_ratio(np,
			       DEFAULT_TCAM_LATENCY,
			       DEFAULT_TCAM_ACCESS_RATIO);
	for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
		err = tcam_user_eth_class_enable(np, i, 0);
		if (err)
			return err;
	}
	for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
		err = tcam_user_ip_class_enable(np, i, 0);
		if (err)
			return err;
	}

	return 0;
}

static int tcam_flush_all(struct niu *np)
{
	unsigned long i;

	for (i = 0; i < np->parent->tcam_num_entries; i++) {
		int err = tcam_flush(np, i);
		if (err)
			return err;
	}
	return 0;
}

static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
{
3030
	return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192
}

#if 0
static int hash_read(struct niu *np, unsigned long partition,
		     unsigned long index, unsigned long num_entries,
		     u64 *data)
{
	u64 val = hash_addr_regval(index, num_entries);
	unsigned long i;

	if (partition >= FCRAM_NUM_PARTITIONS ||
	    index + num_entries > FCRAM_SIZE)
		return -EINVAL;

	nw64(HASH_TBL_ADDR(partition), val);
	for (i = 0; i < num_entries; i++)
		data[i] = nr64(HASH_TBL_DATA(partition));

	return 0;
}
#endif

static int hash_write(struct niu *np, unsigned long partition,
		      unsigned long index, unsigned long num_entries,
		      u64 *data)
{
	u64 val = hash_addr_regval(index, num_entries);
	unsigned long i;

	if (partition >= FCRAM_NUM_PARTITIONS ||
	    index + (num_entries * 8) > FCRAM_SIZE)
		return -EINVAL;

	nw64(HASH_TBL_ADDR(partition), val);
	for (i = 0; i < num_entries; i++)
		nw64(HASH_TBL_DATA(partition), data[i]);

	return 0;
}

static void fflp_reset(struct niu *np)
{
	u64 val;

	nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
	udelay(10);
	nw64(FFLP_CFG_1, 0);

	val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
	nw64(FFLP_CFG_1, val);
}

static void fflp_set_timings(struct niu *np)
{
	u64 val = nr64(FFLP_CFG_1);

	val &= ~FFLP_CFG_1_FFLPINITDONE;
	val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
	nw64(FFLP_CFG_1, val);

	val = nr64(FFLP_CFG_1);
	val |= FFLP_CFG_1_FFLPINITDONE;
	nw64(FFLP_CFG_1, val);

	val = nr64(FCRAM_REF_TMR);
	val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
	val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
	val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
	nw64(FCRAM_REF_TMR, val);
}

static int fflp_set_partition(struct niu *np, u64 partition,
			      u64 mask, u64 base, int enable)
{
	unsigned long reg;
	u64 val;

	if (partition >= FCRAM_NUM_PARTITIONS ||
	    (mask & ~(u64)0x1f) != 0 ||
	    (base & ~(u64)0x1f) != 0)
		return -EINVAL;

	reg = FLW_PRT_SEL(partition);

	val = nr64(reg);
	val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
	val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
	val |= (base << FLW_PRT_SEL_BASE_SHIFT);
	if (enable)
		val |= FLW_PRT_SEL_EXT;
	nw64(reg, val);

	return 0;
}

static int fflp_disable_all_partitions(struct niu *np)
{
	unsigned long i;

	for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
		int err = fflp_set_partition(np, 0, 0, 0, 0);
		if (err)
			return err;
	}
	return 0;
}

static void fflp_llcsnap_enable(struct niu *np, int on)
{
	u64 val = nr64(FFLP_CFG_1);

	if (on)
		val |= FFLP_CFG_1_LLCSNAP;
	else
		val &= ~FFLP_CFG_1_LLCSNAP;
	nw64(FFLP_CFG_1, val);
}

static void fflp_errors_enable(struct niu *np, int on)
{
	u64 val = nr64(FFLP_CFG_1);

	if (on)
		val &= ~FFLP_CFG_1_ERRORDIS;
	else
		val |= FFLP_CFG_1_ERRORDIS;
	nw64(FFLP_CFG_1, val);
}

static int fflp_hash_clear(struct niu *np)
{
	struct fcram_hash_ipv4 ent;
	unsigned long i;

	/* IPV4 hash entry with valid bit clear, rest is don't care.  */
	memset(&ent, 0, sizeof(ent));
	ent.header = HASH_HEADER_EXT;

	for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
		int err = hash_write(np, 0, i, 1, (u64 *) &ent);
		if (err)
			return err;
	}
	return 0;
}

static int fflp_early_init(struct niu *np)
{
	struct niu_parent *parent;
	unsigned long flags;
	int err;

	niu_lock_parent(np, flags);

	parent = np->parent;
	err = 0;
	if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
		if (np->parent->plat_type != PLAT_TYPE_NIU) {
			fflp_reset(np);
			fflp_set_timings(np);
			err = fflp_disable_all_partitions(np);
			if (err) {
3193 3194 3195
				netif_printk(np, probe, KERN_DEBUG, np->dev,
					     "fflp_disable_all_partitions failed, err=%d\n",
					     err);
3196 3197 3198 3199 3200 3201
				goto out;
			}
		}

		err = tcam_early_init(np);
		if (err) {
3202 3203
			netif_printk(np, probe, KERN_DEBUG, np->dev,
				     "tcam_early_init failed, err=%d\n", err);
3204 3205 3206 3207 3208 3209 3210 3211 3212
			goto out;
		}
		fflp_llcsnap_enable(np, 1);
		fflp_errors_enable(np, 0);
		nw64(H1POLY, 0);
		nw64(H2POLY, 0);

		err = tcam_flush_all(np);
		if (err) {
3213 3214
			netif_printk(np, probe, KERN_DEBUG, np->dev,
				     "tcam_flush_all failed, err=%d\n", err);
3215 3216 3217 3218 3219
			goto out;
		}
		if (np->parent->plat_type != PLAT_TYPE_NIU) {
			err = fflp_hash_clear(np);
			if (err) {
3220 3221 3222
				netif_printk(np, probe, KERN_DEBUG, np->dev,
					     "fflp_hash_clear failed, err=%d\n",
					     err);
3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255
				goto out;
			}
		}

		vlan_tbl_clear(np);

		parent->flags |= PARENT_FLGS_CLS_HWINIT;
	}
out:
	niu_unlock_parent(np, flags);
	return err;
}

static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
{
	if (class_code < CLASS_CODE_USER_PROG1 ||
	    class_code > CLASS_CODE_SCTP_IPV6)
		return -EINVAL;

	nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
	return 0;
}

static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
{
	if (class_code < CLASS_CODE_USER_PROG1 ||
	    class_code > CLASS_CODE_SCTP_IPV6)
		return -EINVAL;

	nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
	return 0;
}

3256 3257 3258 3259 3260 3261
/* Entries for the ports are interleaved in the TCAM */
static u16 tcam_get_index(struct niu *np, u16 idx)
{
	/* One entry reserved for IP fragment rule */
	if (idx >= (np->clas.tcam_sz - 1))
		idx = 0;
3262
	return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276
}

static u16 tcam_get_size(struct niu *np)
{
	/* One entry reserved for IP fragment rule */
	return np->clas.tcam_sz - 1;
}

static u16 tcam_get_valid_entry_cnt(struct niu *np)
{
	/* One entry reserved for IP fragment rule */
	return np->clas.tcam_valid_entries - 1;
}

3277
static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3278
			      u32 offset, u32 size, u32 truesize)
3279
{
3280
	skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
3281 3282 3283

	skb->len += size;
	skb->data_len += size;
3284
	skb->truesize += truesize;
3285 3286 3287 3288 3289 3290 3291
}

static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
{
	a >>= PAGE_SHIFT;
	a ^= (a >> ilog2(MAX_RBR_RING_SIZE));

3292
	return a & (MAX_RBR_RING_SIZE - 1);
3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305
}

static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
				    struct page ***link)
{
	unsigned int h = niu_hash_rxaddr(rp, addr);
	struct page *p, **pp;

	addr &= PAGE_MASK;
	pp = &rp->rxhash[h];
	for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
		if (p->index == addr) {
			*link = pp;
3306
			goto found;
3307 3308
		}
	}
3309
	BUG();
3310

3311
found:
3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336
	return p;
}

static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
{
	unsigned int h = niu_hash_rxaddr(rp, base);

	page->index = base;
	page->mapping = (struct address_space *) rp->rxhash[h];
	rp->rxhash[h] = page;
}

static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
			    gfp_t mask, int start_index)
{
	struct page *page;
	u64 addr;
	int i;

	page = alloc_page(mask);
	if (!page)
		return -ENOMEM;

	addr = np->ops->map_page(np->device, page, 0,
				 PAGE_SIZE, DMA_FROM_DEVICE);
3337 3338 3339 3340
	if (!addr) {
		__free_page(page);
		return -ENOMEM;
	}
3341 3342 3343

	niu_hash_page(rp, page, addr);
	if (rp->rbr_blocks_per_page > 1)
3344
		atomic_add(rp->rbr_blocks_per_page - 1, &page->_count);
3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420

	for (i = 0; i < rp->rbr_blocks_per_page; i++) {
		__le32 *rbr = &rp->rbr[start_index + i];

		*rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
		addr += rp->rbr_block_size;
	}

	return 0;
}

static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
{
	int index = rp->rbr_index;

	rp->rbr_pending++;
	if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
		int err = niu_rbr_add_page(np, rp, mask, index);

		if (unlikely(err)) {
			rp->rbr_pending--;
			return;
		}

		rp->rbr_index += rp->rbr_blocks_per_page;
		BUG_ON(rp->rbr_index > rp->rbr_table_size);
		if (rp->rbr_index == rp->rbr_table_size)
			rp->rbr_index = 0;

		if (rp->rbr_pending >= rp->rbr_kick_thresh) {
			nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
			rp->rbr_pending = 0;
		}
	}
}

static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
{
	unsigned int index = rp->rcr_index;
	int num_rcr = 0;

	rp->rx_dropped++;
	while (1) {
		struct page *page, **link;
		u64 addr, val;
		u32 rcr_size;

		num_rcr++;

		val = le64_to_cpup(&rp->rcr[index]);
		addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
			RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
		page = niu_find_rxpage(rp, addr, &link);

		rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
					 RCR_ENTRY_PKTBUFSZ_SHIFT];
		if ((page->index + PAGE_SIZE) - rcr_size == addr) {
			*link = (struct page *) page->mapping;
			np->ops->unmap_page(np->device, page->index,
					    PAGE_SIZE, DMA_FROM_DEVICE);
			page->index = 0;
			page->mapping = NULL;
			__free_page(page);
			rp->rbr_refill_pending++;
		}

		index = NEXT_RCR(rp, index);
		if (!(val & RCR_ENTRY_MULTI))
			break;

	}
	rp->rcr_index = index;

	return num_rcr;
}

D
David S. Miller 已提交
3421 3422
static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
			      struct rx_ring_info *rp)
3423 3424
{
	unsigned int index = rp->rcr_index;
D
David S. Miller 已提交
3425
	struct rx_pkt_hdr1 *rh;
3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465
	struct sk_buff *skb;
	int len, num_rcr;

	skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
	if (unlikely(!skb))
		return niu_rx_pkt_ignore(np, rp);

	num_rcr = 0;
	while (1) {
		struct page *page, **link;
		u32 rcr_size, append_size;
		u64 addr, val, off;

		num_rcr++;

		val = le64_to_cpup(&rp->rcr[index]);

		len = (val & RCR_ENTRY_L2_LEN) >>
			RCR_ENTRY_L2_LEN_SHIFT;
		len -= ETH_FCS_LEN;

		addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
			RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
		page = niu_find_rxpage(rp, addr, &link);

		rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
					 RCR_ENTRY_PKTBUFSZ_SHIFT];

		off = addr & ~PAGE_MASK;
		append_size = rcr_size;
		if (num_rcr == 1) {
			int ptype;

			ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
			if ((ptype == RCR_PKT_TYPE_TCP ||
			     ptype == RCR_PKT_TYPE_UDP) &&
			    !(val & (RCR_ENTRY_NOPORT |
				     RCR_ENTRY_ERROR)))
				skb->ip_summed = CHECKSUM_UNNECESSARY;
			else
3466
				skb_checksum_none_assert(skb);
D
David S. Miller 已提交
3467
		} else if (!(val & RCR_ENTRY_MULTI))
3468 3469
			append_size = len - skb->len;

3470
		niu_rx_skb_append(skb, page, off, append_size, rcr_size);
3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487
		if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
			*link = (struct page *) page->mapping;
			np->ops->unmap_page(np->device, page->index,
					    PAGE_SIZE, DMA_FROM_DEVICE);
			page->index = 0;
			page->mapping = NULL;
			rp->rbr_refill_pending++;
		} else
			get_page(page);

		index = NEXT_RCR(rp, index);
		if (!(val & RCR_ENTRY_MULTI))
			break;

	}
	rp->rcr_index = index;

D
David S. Miller 已提交
3488 3489 3490 3491 3492 3493
	len += sizeof(*rh);
	len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
	__pskb_pull_tail(skb, len);

	rh = (struct rx_pkt_hdr1 *) skb->data;
	if (np->dev->features & NETIF_F_RXHASH)
T
Tom Herbert 已提交
3494 3495 3496 3497 3498 3499
		skb_set_hash(skb,
			     ((u32)rh->hashval2_0 << 24 |
			      (u32)rh->hashval2_1 << 16 |
			      (u32)rh->hashval1_1 << 8 |
			      (u32)rh->hashval1_2 << 0),
			     PKT_HASH_TYPE_L3);
D
David S. Miller 已提交
3500
	skb_pull(skb, sizeof(*rh));
3501 3502 3503 3504 3505

	rp->rx_packets++;
	rp->rx_bytes += skb->len;

	skb->protocol = eth_type_trans(skb, np->dev);
3506
	skb_record_rx_queue(skb, rp->rx_channel);
D
David S. Miller 已提交
3507
	napi_gro_receive(napi, skb);
3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519

	return num_rcr;
}

static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
{
	int blocks_per_page = rp->rbr_blocks_per_page;
	int err, index = rp->rbr_index;

	err = 0;
	while (index < (rp->rbr_table_size - blocks_per_page)) {
		err = niu_rbr_add_page(np, rp, mask, index);
3520
		if (unlikely(err))
3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589
			break;

		index += blocks_per_page;
	}

	rp->rbr_index = index;
	return err;
}

static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
{
	int i;

	for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
		struct page *page;

		page = rp->rxhash[i];
		while (page) {
			struct page *next = (struct page *) page->mapping;
			u64 base = page->index;

			np->ops->unmap_page(np->device, base, PAGE_SIZE,
					    DMA_FROM_DEVICE);
			page->index = 0;
			page->mapping = NULL;

			__free_page(page);

			page = next;
		}
	}

	for (i = 0; i < rp->rbr_table_size; i++)
		rp->rbr[i] = cpu_to_le32(0);
	rp->rbr_index = 0;
}

static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
{
	struct tx_buff_info *tb = &rp->tx_buffs[idx];
	struct sk_buff *skb = tb->skb;
	struct tx_pkt_hdr *tp;
	u64 tx_flags;
	int i, len;

	tp = (struct tx_pkt_hdr *) skb->data;
	tx_flags = le64_to_cpup(&tp->flags);

	rp->tx_packets++;
	rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
			 ((tx_flags & TXHDR_PAD) / 2));

	len = skb_headlen(skb);
	np->ops->unmap_single(np->device, tb->mapping,
			      len, DMA_TO_DEVICE);

	if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
		rp->mark_pending--;

	tb->skb = NULL;
	do {
		idx = NEXT_TX(rp, idx);
		len -= MAX_TX_DESC_LEN;
	} while (len > 0);

	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
		tb = &rp->tx_buffs[idx];
		BUG_ON(tb->skb != NULL);
		np->ops->unmap_page(np->device, tb->mapping,
E
Eric Dumazet 已提交
3590
				    skb_frag_size(&skb_shinfo(skb)->frags[i]),
3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603
				    DMA_TO_DEVICE);
		idx = NEXT_TX(rp, idx);
	}

	dev_kfree_skb(skb);

	return idx;
}

#define NIU_TX_WAKEUP_THRESH(rp)		((rp)->pending / 4)

static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
{
3604
	struct netdev_queue *txq;
3605
	u16 pkt_cnt, tmp;
3606
	int cons, index;
3607 3608
	u64 cs;

3609 3610 3611
	index = (rp - np->tx_rings);
	txq = netdev_get_tx_queue(np->dev, index);

3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623
	cs = rp->tx_cs;
	if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
		goto out;

	tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
	pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
		(TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);

	rp->last_pkt_cnt = tmp;

	cons = rp->cons;

3624 3625
	netif_printk(np, tx_done, KERN_DEBUG, np->dev,
		     "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3626

3627
	while (pkt_cnt--)
3628 3629 3630 3631 3632 3633
		cons = release_tx_packet(np, rp, cons);

	rp->cons = cons;
	smp_mb();

out:
3634
	if (unlikely(netif_tx_queue_stopped(txq) &&
3635
		     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3636 3637
		__netif_tx_lock(txq, smp_processor_id());
		if (netif_tx_queue_stopped(txq) &&
3638
		    (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3639 3640
			netif_tx_wake_queue(txq);
		__netif_tx_unlock(txq);
3641 3642 3643
	}
}

3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672
static inline void niu_sync_rx_discard_stats(struct niu *np,
					     struct rx_ring_info *rp,
					     const int limit)
{
	/* This elaborate scheme is needed for reading the RX discard
	 * counters, as they are only 16-bit and can overflow quickly,
	 * and because the overflow indication bit is not usable as
	 * the counter value does not wrap, but remains at max value
	 * 0xFFFF.
	 *
	 * In theory and in practice counters can be lost in between
	 * reading nr64() and clearing the counter nw64().  For this
	 * reason, the number of counter clearings nw64() is
	 * limited/reduced though the limit parameter.
	 */
	int rx_channel = rp->rx_channel;
	u32 misc, wred;

	/* RXMISC (Receive Miscellaneous Discard Count), covers the
	 * following discard events: IPP (Input Port Process),
	 * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
	 * Block Ring) prefetch buffer is empty.
	 */
	misc = nr64(RXMISC(rx_channel));
	if (unlikely((misc & RXMISC_COUNT) > limit)) {
		nw64(RXMISC(rx_channel), 0);
		rp->rx_errors += misc & RXMISC_COUNT;

		if (unlikely(misc & RXMISC_OFLOW))
3673 3674
			dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
				rx_channel);
3675

3676 3677 3678
		netif_printk(np, rx_err, KERN_DEBUG, np->dev,
			     "rx-%d: MISC drop=%u over=%u\n",
			     rx_channel, misc, misc-limit);
3679 3680 3681 3682 3683 3684 3685 3686 3687
	}

	/* WRED (Weighted Random Early Discard) by hardware */
	wred = nr64(RED_DIS_CNT(rx_channel));
	if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
		nw64(RED_DIS_CNT(rx_channel), 0);
		rp->rx_dropped += wred & RED_DIS_CNT_COUNT;

		if (unlikely(wred & RED_DIS_CNT_OFLOW))
3688
			dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3689

3690 3691 3692
		netif_printk(np, rx_err, KERN_DEBUG, np->dev,
			     "rx-%d: WRED drop=%u over=%u\n",
			     rx_channel, wred, wred-limit);
3693 3694 3695
	}
}

D
David S. Miller 已提交
3696 3697
static int niu_rx_work(struct napi_struct *napi, struct niu *np,
		       struct rx_ring_info *rp, int budget)
3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712
{
	int qlen, rcr_done = 0, work_done = 0;
	struct rxdma_mailbox *mbox = rp->mbox;
	u64 stat;

#if 1
	stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
	qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
#else
	stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
	qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
#endif
	mbox->rx_dma_ctl_stat = 0;
	mbox->rcrstat_a = 0;

3713 3714 3715
	netif_printk(np, rx_status, KERN_DEBUG, np->dev,
		     "%s(chan[%d]), stat[%llx] qlen=%d\n",
		     __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3716 3717 3718 3719

	rcr_done = work_done = 0;
	qlen = min(qlen, budget);
	while (work_done < qlen) {
D
David S. Miller 已提交
3720
		rcr_done += niu_process_rx_pkt(napi, np, rp);
3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737
		work_done++;
	}

	if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
		unsigned int i;

		for (i = 0; i < rp->rbr_refill_pending; i++)
			niu_rbr_refill(np, rp, GFP_ATOMIC);
		rp->rbr_refill_pending = 0;
	}

	stat = (RX_DMA_CTL_STAT_MEX |
		((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
		((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));

	nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);

3738 3739 3740
	/* Only sync discards stats when qlen indicate potential for drops */
	if (qlen > 10)
		niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3741

3742 3743 3744 3745 3746 3747 3748 3749 3750 3751
	return work_done;
}

static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
{
	u64 v0 = lp->v0;
	u32 tx_vec = (v0 >> 32);
	u32 rx_vec = (v0 & 0xffffffff);
	int i, work_done = 0;

3752 3753
	netif_printk(np, intr, KERN_DEBUG, np->dev,
		     "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767

	for (i = 0; i < np->num_tx_rings; i++) {
		struct tx_ring_info *rp = &np->tx_rings[i];
		if (tx_vec & (1 << rp->tx_channel))
			niu_tx_work(np, rp);
		nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
	}

	for (i = 0; i < np->num_rx_rings; i++) {
		struct rx_ring_info *rp = &np->rx_rings[i];

		if (rx_vec & (1 << rp->rx_channel)) {
			int this_work_done;

D
David S. Miller 已提交
3768
			this_work_done = niu_rx_work(&lp->napi, np, rp,
3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788
						     budget);

			budget -= this_work_done;
			work_done += this_work_done;
		}
		nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
	}

	return work_done;
}

static int niu_poll(struct napi_struct *napi, int budget)
{
	struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
	struct niu *np = lp->np;
	int work_done;

	work_done = niu_poll_core(np, lp, budget);

	if (work_done < budget) {
3789
		napi_complete(napi);
3790 3791 3792 3793 3794 3795 3796 3797
		niu_ldg_rearm(np, lp, 1);
	}
	return work_done;
}

static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
				  u64 stat)
{
3798
	netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3799 3800

	if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3801
		pr_cont("RBR_TMOUT ");
3802
	if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3803
		pr_cont("RSP_CNT ");
3804
	if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3805
		pr_cont("BYTE_EN_BUS ");
3806
	if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3807
		pr_cont("RSP_DAT ");
3808
	if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3809
		pr_cont("RCR_ACK ");
3810
	if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3811
		pr_cont("RCR_SHA_PAR ");
3812
	if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3813
		pr_cont("RBR_PRE_PAR ");
3814
	if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3815
		pr_cont("CONFIG ");
3816
	if (stat & RX_DMA_CTL_STAT_RCRINCON)
3817
		pr_cont("RCRINCON ");
3818
	if (stat & RX_DMA_CTL_STAT_RCRFULL)
3819
		pr_cont("RCRFULL ");
3820
	if (stat & RX_DMA_CTL_STAT_RBRFULL)
3821
		pr_cont("RBRFULL ");
3822
	if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3823
		pr_cont("RBRLOGPAGE ");
3824
	if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3825
		pr_cont("CFIGLOGPAGE ");
3826
	if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3827
		pr_cont("DC_FIDO ");
3828

3829
	pr_cont(")\n");
3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841
}

static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
{
	u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
	int err = 0;


	if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
		    RX_DMA_CTL_STAT_PORT_FATAL))
		err = -EINVAL;

3842
	if (err) {
3843 3844 3845
		netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
			   rp->rx_channel,
			   (unsigned long long) stat);
3846 3847 3848 3849

		niu_log_rxchan_errors(np, rp, stat);
	}

3850 3851 3852 3853 3854 3855 3856 3857 3858
	nw64(RX_DMA_CTL_STAT(rp->rx_channel),
	     stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);

	return err;
}

static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
				  u64 cs)
{
3859
	netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3860 3861

	if (cs & TX_CS_MBOX_ERR)
3862
		pr_cont("MBOX ");
3863
	if (cs & TX_CS_PKT_SIZE_ERR)
3864
		pr_cont("PKT_SIZE ");
3865
	if (cs & TX_CS_TX_RING_OFLOW)
3866
		pr_cont("TX_RING_OFLOW ");
3867
	if (cs & TX_CS_PREF_BUF_PAR_ERR)
3868
		pr_cont("PREF_BUF_PAR ");
3869
	if (cs & TX_CS_NACK_PREF)
3870
		pr_cont("NACK_PREF ");
3871
	if (cs & TX_CS_NACK_PKT_RD)
3872
		pr_cont("NACK_PKT_RD ");
3873
	if (cs & TX_CS_CONF_PART_ERR)
3874
		pr_cont("CONF_PART ");
3875
	if (cs & TX_CS_PKT_PRT_ERR)
3876
		pr_cont("PKT_PTR ");
3877

3878
	pr_cont(")\n");
3879 3880 3881 3882 3883 3884 3885 3886 3887 3888
}

static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
{
	u64 cs, logh, logl;

	cs = nr64(TX_CS(rp->tx_channel));
	logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
	logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));

3889 3890 3891 3892 3893
	netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
		   rp->tx_channel,
		   (unsigned long long)cs,
		   (unsigned long long)logh,
		   (unsigned long long)logl);
3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911

	niu_log_txchan_errors(np, rp, cs);

	return -ENODEV;
}

static int niu_mif_interrupt(struct niu *np)
{
	u64 mif_status = nr64(MIF_STATUS);
	int phy_mdint = 0;

	if (np->flags & NIU_FLAGS_XMAC) {
		u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);

		if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
			phy_mdint = 1;
	}

3912 3913
	netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
		   (unsigned long long)mif_status, phy_mdint);
3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967

	return -ENODEV;
}

static void niu_xmac_interrupt(struct niu *np)
{
	struct niu_xmac_stats *mp = &np->mac_stats.xmac;
	u64 val;

	val = nr64_mac(XTXMAC_STATUS);
	if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
		mp->tx_frames += TXMAC_FRM_CNT_COUNT;
	if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
		mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
	if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
		mp->tx_fifo_errors++;
	if (val & XTXMAC_STATUS_TXMAC_OFLOW)
		mp->tx_overflow_errors++;
	if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
		mp->tx_max_pkt_size_errors++;
	if (val & XTXMAC_STATUS_TXMAC_UFLOW)
		mp->tx_underflow_errors++;

	val = nr64_mac(XRXMAC_STATUS);
	if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
		mp->rx_local_faults++;
	if (val & XRXMAC_STATUS_RFLT_DET)
		mp->rx_remote_faults++;
	if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
		mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
	if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
		mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
	if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
		mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
	if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
		mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
	if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
		mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
	if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
		mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
	if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
		mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
	if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
		mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
	if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
		mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
	if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
		mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
	if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
		mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
	if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
		mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
	if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
		mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
J
Julia Lawall 已提交
3968
	if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037
		mp->rx_octets += RXMAC_BT_CNT_COUNT;
	if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
		mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
	if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
		mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
	if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
		mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
	if (val & XRXMAC_STATUS_RXUFLOW)
		mp->rx_underflows++;
	if (val & XRXMAC_STATUS_RXOFLOW)
		mp->rx_overflows++;

	val = nr64_mac(XMAC_FC_STAT);
	if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
		mp->pause_off_state++;
	if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
		mp->pause_on_state++;
	if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
		mp->pause_received++;
}

static void niu_bmac_interrupt(struct niu *np)
{
	struct niu_bmac_stats *mp = &np->mac_stats.bmac;
	u64 val;

	val = nr64_mac(BTXMAC_STATUS);
	if (val & BTXMAC_STATUS_UNDERRUN)
		mp->tx_underflow_errors++;
	if (val & BTXMAC_STATUS_MAX_PKT_ERR)
		mp->tx_max_pkt_size_errors++;
	if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
		mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
	if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
		mp->tx_frames += BTXMAC_FRM_CNT_COUNT;

	val = nr64_mac(BRXMAC_STATUS);
	if (val & BRXMAC_STATUS_OVERFLOW)
		mp->rx_overflows++;
	if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
		mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
	if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
		mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
	if (val & BRXMAC_STATUS_CRC_ERR_EXP)
		mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
	if (val & BRXMAC_STATUS_LEN_ERR_EXP)
		mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;

	val = nr64_mac(BMAC_CTRL_STATUS);
	if (val & BMAC_CTRL_STATUS_NOPAUSE)
		mp->pause_off_state++;
	if (val & BMAC_CTRL_STATUS_PAUSE)
		mp->pause_on_state++;
	if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
		mp->pause_received++;
}

static int niu_mac_interrupt(struct niu *np)
{
	if (np->flags & NIU_FLAGS_XMAC)
		niu_xmac_interrupt(np);
	else
		niu_bmac_interrupt(np);

	return 0;
}

static void niu_log_device_error(struct niu *np, u64 stat)
{
4038
	netdev_err(np->dev, "Core device errors ( ");
4039 4040

	if (stat & SYS_ERR_MASK_META2)
4041
		pr_cont("META2 ");
4042
	if (stat & SYS_ERR_MASK_META1)
4043
		pr_cont("META1 ");
4044
	if (stat & SYS_ERR_MASK_PEU)
4045
		pr_cont("PEU ");
4046
	if (stat & SYS_ERR_MASK_TXC)
4047
		pr_cont("TXC ");
4048
	if (stat & SYS_ERR_MASK_RDMC)
4049
		pr_cont("RDMC ");
4050
	if (stat & SYS_ERR_MASK_TDMC)
4051
		pr_cont("TDMC ");
4052
	if (stat & SYS_ERR_MASK_ZCP)
4053
		pr_cont("ZCP ");
4054
	if (stat & SYS_ERR_MASK_FFLP)
4055
		pr_cont("FFLP ");
4056
	if (stat & SYS_ERR_MASK_IPP)
4057
		pr_cont("IPP ");
4058
	if (stat & SYS_ERR_MASK_MAC)
4059
		pr_cont("MAC ");
4060
	if (stat & SYS_ERR_MASK_SMX)
4061
		pr_cont("SMX ");
4062

4063
	pr_cont(")\n");
4064 4065 4066 4067 4068 4069
}

static int niu_device_error(struct niu *np)
{
	u64 stat = nr64(SYS_ERR_STAT);

4070 4071
	netdev_err(np->dev, "Core device error, stat[%llx]\n",
		   (unsigned long long)stat);
4072 4073 4074 4075 4076 4077

	niu_log_device_error(np, stat);

	return -ENODEV;
}

4078 4079
static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
			      u64 v0, u64 v1, u64 v2)
4080
{
4081

4082 4083
	int i, err = 0;

4084 4085 4086 4087
	lp->v0 = v0;
	lp->v1 = v1;
	lp->v2 = v2;

4088 4089 4090 4091 4092 4093 4094 4095
	if (v1 & 0x00000000ffffffffULL) {
		u32 rx_vec = (v1 & 0xffffffff);

		for (i = 0; i < np->num_rx_rings; i++) {
			struct rx_ring_info *rp = &np->rx_rings[i];

			if (rx_vec & (1 << rp->rx_channel)) {
				int r = niu_rx_error(np, rp);
4096
				if (r) {
4097
					err = r;
4098 4099 4100 4101 4102
				} else {
					if (!v0)
						nw64(RX_DMA_CTL_STAT(rp->rx_channel),
						     RX_DMA_CTL_STAT_MEX);
				}
4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139
			}
		}
	}
	if (v1 & 0x7fffffff00000000ULL) {
		u32 tx_vec = (v1 >> 32) & 0x7fffffff;

		for (i = 0; i < np->num_tx_rings; i++) {
			struct tx_ring_info *rp = &np->tx_rings[i];

			if (tx_vec & (1 << rp->tx_channel)) {
				int r = niu_tx_error(np, rp);
				if (r)
					err = r;
			}
		}
	}
	if ((v0 | v1) & 0x8000000000000000ULL) {
		int r = niu_mif_interrupt(np);
		if (r)
			err = r;
	}
	if (v2) {
		if (v2 & 0x01ef) {
			int r = niu_mac_interrupt(np);
			if (r)
				err = r;
		}
		if (v2 & 0x0210) {
			int r = niu_device_error(np);
			if (r)
				err = r;
		}
	}

	if (err)
		niu_enable_interrupts(np, 0);

4140
	return err;
4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152
}

static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
			    int ldn)
{
	struct rxdma_mailbox *mbox = rp->mbox;
	u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);

	stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
		      RX_DMA_CTL_STAT_RCRTO);
	nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);

4153 4154
	netif_printk(np, intr, KERN_DEBUG, np->dev,
		     "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4155 4156 4157 4158 4159 4160 4161
}

static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
			    int ldn)
{
	rp->tx_cs = nr64(TX_CS(rp->tx_channel));

4162 4163
	netif_printk(np, intr, KERN_DEBUG, np->dev,
		     "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202
}

static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
{
	struct niu_parent *parent = np->parent;
	u32 rx_vec, tx_vec;
	int i;

	tx_vec = (v0 >> 32);
	rx_vec = (v0 & 0xffffffff);

	for (i = 0; i < np->num_rx_rings; i++) {
		struct rx_ring_info *rp = &np->rx_rings[i];
		int ldn = LDN_RXDMA(rp->rx_channel);

		if (parent->ldg_map[ldn] != ldg)
			continue;

		nw64(LD_IM0(ldn), LD_IM0_MASK);
		if (rx_vec & (1 << rp->rx_channel))
			niu_rxchan_intr(np, rp, ldn);
	}

	for (i = 0; i < np->num_tx_rings; i++) {
		struct tx_ring_info *rp = &np->tx_rings[i];
		int ldn = LDN_TXDMA(rp->tx_channel);

		if (parent->ldg_map[ldn] != ldg)
			continue;

		nw64(LD_IM0(ldn), LD_IM0_MASK);
		if (tx_vec & (1 << rp->tx_channel))
			niu_txchan_intr(np, rp, ldn);
	}
}

static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
			      u64 v0, u64 v1, u64 v2)
{
4203
	if (likely(napi_schedule_prep(&lp->napi))) {
4204 4205 4206 4207
		lp->v0 = v0;
		lp->v1 = v1;
		lp->v2 = v2;
		__niu_fastpath_interrupt(np, lp->ldg_num, v0);
4208
		__napi_schedule(&lp->napi);
4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220
	}
}

static irqreturn_t niu_interrupt(int irq, void *dev_id)
{
	struct niu_ldg *lp = dev_id;
	struct niu *np = lp->np;
	int ldg = lp->ldg_num;
	unsigned long flags;
	u64 v0, v1, v2;

	if (netif_msg_intr(np))
4221 4222
		printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
		       __func__, lp, ldg);
4223 4224 4225 4226 4227 4228 4229 4230

	spin_lock_irqsave(&np->lock, flags);

	v0 = nr64(LDSV0(ldg));
	v1 = nr64(LDSV1(ldg));
	v2 = nr64(LDSV2(ldg));

	if (netif_msg_intr(np))
4231
		pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4232 4233 4234 4235 4236 4237 4238 4239 4240 4241
		       (unsigned long long) v0,
		       (unsigned long long) v1,
		       (unsigned long long) v2);

	if (unlikely(!v0 && !v1 && !v2)) {
		spin_unlock_irqrestore(&np->lock, flags);
		return IRQ_NONE;
	}

	if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4242
		int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344
		if (err)
			goto out;
	}
	if (likely(v0 & ~((u64)1 << LDN_MIF)))
		niu_schedule_napi(np, lp, v0, v1, v2);
	else
		niu_ldg_rearm(np, lp, 1);
out:
	spin_unlock_irqrestore(&np->lock, flags);

	return IRQ_HANDLED;
}

static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
{
	if (rp->mbox) {
		np->ops->free_coherent(np->device,
				       sizeof(struct rxdma_mailbox),
				       rp->mbox, rp->mbox_dma);
		rp->mbox = NULL;
	}
	if (rp->rcr) {
		np->ops->free_coherent(np->device,
				       MAX_RCR_RING_SIZE * sizeof(__le64),
				       rp->rcr, rp->rcr_dma);
		rp->rcr = NULL;
		rp->rcr_table_size = 0;
		rp->rcr_index = 0;
	}
	if (rp->rbr) {
		niu_rbr_free(np, rp);

		np->ops->free_coherent(np->device,
				       MAX_RBR_RING_SIZE * sizeof(__le32),
				       rp->rbr, rp->rbr_dma);
		rp->rbr = NULL;
		rp->rbr_table_size = 0;
		rp->rbr_index = 0;
	}
	kfree(rp->rxhash);
	rp->rxhash = NULL;
}

static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
{
	if (rp->mbox) {
		np->ops->free_coherent(np->device,
				       sizeof(struct txdma_mailbox),
				       rp->mbox, rp->mbox_dma);
		rp->mbox = NULL;
	}
	if (rp->descr) {
		int i;

		for (i = 0; i < MAX_TX_RING_SIZE; i++) {
			if (rp->tx_buffs[i].skb)
				(void) release_tx_packet(np, rp, i);
		}

		np->ops->free_coherent(np->device,
				       MAX_TX_RING_SIZE * sizeof(__le64),
				       rp->descr, rp->descr_dma);
		rp->descr = NULL;
		rp->pending = 0;
		rp->prod = 0;
		rp->cons = 0;
		rp->wrap_bit = 0;
	}
}

static void niu_free_channels(struct niu *np)
{
	int i;

	if (np->rx_rings) {
		for (i = 0; i < np->num_rx_rings; i++) {
			struct rx_ring_info *rp = &np->rx_rings[i];

			niu_free_rx_ring_info(np, rp);
		}
		kfree(np->rx_rings);
		np->rx_rings = NULL;
		np->num_rx_rings = 0;
	}

	if (np->tx_rings) {
		for (i = 0; i < np->num_tx_rings; i++) {
			struct tx_ring_info *rp = &np->tx_rings[i];

			niu_free_tx_ring_info(np, rp);
		}
		kfree(np->tx_rings);
		np->tx_rings = NULL;
		np->num_tx_rings = 0;
	}
}

static int niu_alloc_rx_ring_info(struct niu *np,
				  struct rx_ring_info *rp)
{
	BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);

4345
	rp->rxhash = kcalloc(MAX_RBR_RING_SIZE, sizeof(struct page *),
4346 4347 4348 4349 4350 4351 4352 4353 4354 4355
			     GFP_KERNEL);
	if (!rp->rxhash)
		return -ENOMEM;

	rp->mbox = np->ops->alloc_coherent(np->device,
					   sizeof(struct rxdma_mailbox),
					   &rp->mbox_dma, GFP_KERNEL);
	if (!rp->mbox)
		return -ENOMEM;
	if ((unsigned long)rp->mbox & (64UL - 1)) {
4356 4357
		netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
			   rp->mbox);
4358 4359 4360 4361 4362 4363 4364 4365 4366
		return -EINVAL;
	}

	rp->rcr = np->ops->alloc_coherent(np->device,
					  MAX_RCR_RING_SIZE * sizeof(__le64),
					  &rp->rcr_dma, GFP_KERNEL);
	if (!rp->rcr)
		return -ENOMEM;
	if ((unsigned long)rp->rcr & (64UL - 1)) {
4367 4368
		netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
			   rp->rcr);
4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379
		return -EINVAL;
	}
	rp->rcr_table_size = MAX_RCR_RING_SIZE;
	rp->rcr_index = 0;

	rp->rbr = np->ops->alloc_coherent(np->device,
					  MAX_RBR_RING_SIZE * sizeof(__le32),
					  &rp->rbr_dma, GFP_KERNEL);
	if (!rp->rbr)
		return -ENOMEM;
	if ((unsigned long)rp->rbr & (64UL - 1)) {
4380 4381
		netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
			   rp->rbr);
4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413
		return -EINVAL;
	}
	rp->rbr_table_size = MAX_RBR_RING_SIZE;
	rp->rbr_index = 0;
	rp->rbr_pending = 0;

	return 0;
}

static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
{
	int mtu = np->dev->mtu;

	/* These values are recommended by the HW designers for fair
	 * utilization of DRR amongst the rings.
	 */
	rp->max_burst = mtu + 32;
	if (rp->max_burst > 4096)
		rp->max_burst = 4096;
}

static int niu_alloc_tx_ring_info(struct niu *np,
				  struct tx_ring_info *rp)
{
	BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);

	rp->mbox = np->ops->alloc_coherent(np->device,
					   sizeof(struct txdma_mailbox),
					   &rp->mbox_dma, GFP_KERNEL);
	if (!rp->mbox)
		return -ENOMEM;
	if ((unsigned long)rp->mbox & (64UL - 1)) {
4414 4415
		netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
			   rp->mbox);
4416 4417 4418 4419 4420 4421 4422 4423 4424
		return -EINVAL;
	}

	rp->descr = np->ops->alloc_coherent(np->device,
					    MAX_TX_RING_SIZE * sizeof(__le64),
					    &rp->descr_dma, GFP_KERNEL);
	if (!rp->descr)
		return -ENOMEM;
	if ((unsigned long)rp->descr & (64UL - 1)) {
4425 4426
		netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
			   rp->descr);
4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444
		return -EINVAL;
	}

	rp->pending = MAX_TX_RING_SIZE;
	rp->prod = 0;
	rp->cons = 0;
	rp->wrap_bit = 0;

	/* XXX make these configurable... XXX */
	rp->mark_freq = rp->pending / 4;

	niu_set_max_burst(np, rp);

	return 0;
}

static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
{
4445
	u16 bss;
4446

4447
	bss = min(PAGE_SHIFT, 15);
4448

4449 4450
	rp->rbr_block_size = 1 << bss;
	rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473

	rp->rbr_sizes[0] = 256;
	rp->rbr_sizes[1] = 1024;
	if (np->dev->mtu > ETH_DATA_LEN) {
		switch (PAGE_SIZE) {
		case 4 * 1024:
			rp->rbr_sizes[2] = 4096;
			break;

		default:
			rp->rbr_sizes[2] = 8192;
			break;
		}
	} else {
		rp->rbr_sizes[2] = 2048;
	}
	rp->rbr_sizes[3] = rp->rbr_block_size;
}

static int niu_alloc_channels(struct niu *np)
{
	struct niu_parent *parent = np->parent;
	int first_rx_channel, first_tx_channel;
4474 4475 4476
	int num_rx_rings, num_tx_rings;
	struct rx_ring_info *rx_rings;
	struct tx_ring_info *tx_rings;
4477 4478 4479 4480 4481 4482 4483 4484 4485
	int i, port, err;

	port = np->port;
	first_rx_channel = first_tx_channel = 0;
	for (i = 0; i < port; i++) {
		first_rx_channel += parent->rxchan_per_port[i];
		first_tx_channel += parent->txchan_per_port[i];
	}

4486 4487
	num_rx_rings = parent->rxchan_per_port[port];
	num_tx_rings = parent->txchan_per_port[port];
4488

4489 4490
	rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
			   GFP_KERNEL);
4491
	err = -ENOMEM;
4492
	if (!rx_rings)
4493 4494
		goto out_err;

4495 4496 4497 4498 4499 4500
	np->num_rx_rings = num_rx_rings;
	smp_wmb();
	np->rx_rings = rx_rings;

	netif_set_real_num_rx_queues(np->dev, num_rx_rings);

4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528
	for (i = 0; i < np->num_rx_rings; i++) {
		struct rx_ring_info *rp = &np->rx_rings[i];

		rp->np = np;
		rp->rx_channel = first_rx_channel + i;

		err = niu_alloc_rx_ring_info(np, rp);
		if (err)
			goto out_err;

		niu_size_rbr(np, rp);

		/* XXX better defaults, configurable, etc... XXX */
		rp->nonsyn_window = 64;
		rp->nonsyn_threshold = rp->rcr_table_size - 64;
		rp->syn_window = 64;
		rp->syn_threshold = rp->rcr_table_size - 64;
		rp->rcr_pkt_threshold = 16;
		rp->rcr_timeout = 8;
		rp->rbr_kick_thresh = RBR_REFILL_MIN;
		if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
			rp->rbr_kick_thresh = rp->rbr_blocks_per_page;

		err = niu_rbr_fill(np, rp, GFP_KERNEL);
		if (err)
			return err;
	}

4529 4530
	tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
			   GFP_KERNEL);
4531
	err = -ENOMEM;
4532
	if (!tx_rings)
4533 4534
		goto out_err;

4535 4536 4537 4538 4539 4540
	np->num_tx_rings = num_tx_rings;
	smp_wmb();
	np->tx_rings = tx_rings;

	netif_set_real_num_tx_queues(np->dev, num_tx_rings);

4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694
	for (i = 0; i < np->num_tx_rings; i++) {
		struct tx_ring_info *rp = &np->tx_rings[i];

		rp->np = np;
		rp->tx_channel = first_tx_channel + i;

		err = niu_alloc_tx_ring_info(np, rp);
		if (err)
			goto out_err;
	}

	return 0;

out_err:
	niu_free_channels(np);
	return err;
}

static int niu_tx_cs_sng_poll(struct niu *np, int channel)
{
	int limit = 1000;

	while (--limit > 0) {
		u64 val = nr64(TX_CS(channel));
		if (val & TX_CS_SNG_STATE)
			return 0;
	}
	return -ENODEV;
}

static int niu_tx_channel_stop(struct niu *np, int channel)
{
	u64 val = nr64(TX_CS(channel));

	val |= TX_CS_STOP_N_GO;
	nw64(TX_CS(channel), val);

	return niu_tx_cs_sng_poll(np, channel);
}

static int niu_tx_cs_reset_poll(struct niu *np, int channel)
{
	int limit = 1000;

	while (--limit > 0) {
		u64 val = nr64(TX_CS(channel));
		if (!(val & TX_CS_RST))
			return 0;
	}
	return -ENODEV;
}

static int niu_tx_channel_reset(struct niu *np, int channel)
{
	u64 val = nr64(TX_CS(channel));
	int err;

	val |= TX_CS_RST;
	nw64(TX_CS(channel), val);

	err = niu_tx_cs_reset_poll(np, channel);
	if (!err)
		nw64(TX_RING_KICK(channel), 0);

	return err;
}

static int niu_tx_channel_lpage_init(struct niu *np, int channel)
{
	u64 val;

	nw64(TX_LOG_MASK1(channel), 0);
	nw64(TX_LOG_VAL1(channel), 0);
	nw64(TX_LOG_MASK2(channel), 0);
	nw64(TX_LOG_VAL2(channel), 0);
	nw64(TX_LOG_PAGE_RELO1(channel), 0);
	nw64(TX_LOG_PAGE_RELO2(channel), 0);
	nw64(TX_LOG_PAGE_HDL(channel), 0);

	val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
	val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
	nw64(TX_LOG_PAGE_VLD(channel), val);

	/* XXX TXDMA 32bit mode? XXX */

	return 0;
}

static void niu_txc_enable_port(struct niu *np, int on)
{
	unsigned long flags;
	u64 val, mask;

	niu_lock_parent(np, flags);
	val = nr64(TXC_CONTROL);
	mask = (u64)1 << np->port;
	if (on) {
		val |= TXC_CONTROL_ENABLE | mask;
	} else {
		val &= ~mask;
		if ((val & ~TXC_CONTROL_ENABLE) == 0)
			val &= ~TXC_CONTROL_ENABLE;
	}
	nw64(TXC_CONTROL, val);
	niu_unlock_parent(np, flags);
}

static void niu_txc_set_imask(struct niu *np, u64 imask)
{
	unsigned long flags;
	u64 val;

	niu_lock_parent(np, flags);
	val = nr64(TXC_INT_MASK);
	val &= ~TXC_INT_MASK_VAL(np->port);
	val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
	niu_unlock_parent(np, flags);
}

static void niu_txc_port_dma_enable(struct niu *np, int on)
{
	u64 val = 0;

	if (on) {
		int i;

		for (i = 0; i < np->num_tx_rings; i++)
			val |= (1 << np->tx_rings[i].tx_channel);
	}
	nw64(TXC_PORT_DMA(np->port), val);
}

static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
{
	int err, channel = rp->tx_channel;
	u64 val, ring_len;

	err = niu_tx_channel_stop(np, channel);
	if (err)
		return err;

	err = niu_tx_channel_reset(np, channel);
	if (err)
		return err;

	err = niu_tx_channel_lpage_init(np, channel);
	if (err)
		return err;

	nw64(TXC_DMA_MAX(channel), rp->max_burst);
	nw64(TX_ENT_MSK(channel), 0);

	if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
			      TX_RNG_CFIG_STADDR)) {
4695 4696
		netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
			   channel, (unsigned long long)rp->descr_dma);
4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712
		return -EINVAL;
	}

	/* The length field in TX_RNG_CFIG is measured in 64-byte
	 * blocks.  rp->pending is the number of TX descriptors in
	 * our ring, 8 bytes each, thus we divide by 8 bytes more
	 * to get the proper value the chip wants.
	 */
	ring_len = (rp->pending / 8);

	val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
	       rp->descr_dma);
	nw64(TX_RNG_CFIG(channel), val);

	if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
	    ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4713 4714
		netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
			    channel, (unsigned long long)rp->mbox_dma);
4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827
		return -EINVAL;
	}
	nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
	nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);

	nw64(TX_CS(channel), 0);

	rp->last_pkt_cnt = 0;

	return 0;
}

static void niu_init_rdc_groups(struct niu *np)
{
	struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
	int i, first_table_num = tp->first_table_num;

	for (i = 0; i < tp->num_tables; i++) {
		struct rdc_table *tbl = &tp->tables[i];
		int this_table = first_table_num + i;
		int slot;

		for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
			nw64(RDC_TBL(this_table, slot),
			     tbl->rxdma_channel[slot]);
	}

	nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
}

static void niu_init_drr_weight(struct niu *np)
{
	int type = phy_decode(np->parent->port_phy, np->port);
	u64 val;

	switch (type) {
	case PORT_TYPE_10G:
		val = PT_DRR_WEIGHT_DEFAULT_10G;
		break;

	case PORT_TYPE_1G:
	default:
		val = PT_DRR_WEIGHT_DEFAULT_1G;
		break;
	}
	nw64(PT_DRR_WT(np->port), val);
}

static int niu_init_hostinfo(struct niu *np)
{
	struct niu_parent *parent = np->parent;
	struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
	int i, err, num_alt = niu_num_alt_addr(np);
	int first_rdc_table = tp->first_table_num;

	err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
	if (err)
		return err;

	err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
	if (err)
		return err;

	for (i = 0; i < num_alt; i++) {
		err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
		if (err)
			return err;
	}

	return 0;
}

static int niu_rx_channel_reset(struct niu *np, int channel)
{
	return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
				      RXDMA_CFIG1_RST, 1000, 10,
				      "RXDMA_CFIG1");
}

static int niu_rx_channel_lpage_init(struct niu *np, int channel)
{
	u64 val;

	nw64(RX_LOG_MASK1(channel), 0);
	nw64(RX_LOG_VAL1(channel), 0);
	nw64(RX_LOG_MASK2(channel), 0);
	nw64(RX_LOG_VAL2(channel), 0);
	nw64(RX_LOG_PAGE_RELO1(channel), 0);
	nw64(RX_LOG_PAGE_RELO2(channel), 0);
	nw64(RX_LOG_PAGE_HDL(channel), 0);

	val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
	val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
	nw64(RX_LOG_PAGE_VLD(channel), val);

	return 0;
}

static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
{
	u64 val;

	val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
	       ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
	       ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
	       ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
	nw64(RDC_RED_PARA(rp->rx_channel), val);
}

static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
{
	u64 val = 0;

4828
	*ret = 0;
4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947
	switch (rp->rbr_block_size) {
	case 4 * 1024:
		val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
		break;
	case 8 * 1024:
		val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
		break;
	case 16 * 1024:
		val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
		break;
	case 32 * 1024:
		val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
		break;
	default:
		return -EINVAL;
	}
	val |= RBR_CFIG_B_VLD2;
	switch (rp->rbr_sizes[2]) {
	case 2 * 1024:
		val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
		break;
	case 4 * 1024:
		val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
		break;
	case 8 * 1024:
		val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
		break;
	case 16 * 1024:
		val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
		break;

	default:
		return -EINVAL;
	}
	val |= RBR_CFIG_B_VLD1;
	switch (rp->rbr_sizes[1]) {
	case 1 * 1024:
		val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
		break;
	case 2 * 1024:
		val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
		break;
	case 4 * 1024:
		val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
		break;
	case 8 * 1024:
		val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
		break;

	default:
		return -EINVAL;
	}
	val |= RBR_CFIG_B_VLD0;
	switch (rp->rbr_sizes[0]) {
	case 256:
		val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
		break;
	case 512:
		val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
		break;
	case 1 * 1024:
		val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
		break;
	case 2 * 1024:
		val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
		break;

	default:
		return -EINVAL;
	}

	*ret = val;
	return 0;
}

static int niu_enable_rx_channel(struct niu *np, int channel, int on)
{
	u64 val = nr64(RXDMA_CFIG1(channel));
	int limit;

	if (on)
		val |= RXDMA_CFIG1_EN;
	else
		val &= ~RXDMA_CFIG1_EN;
	nw64(RXDMA_CFIG1(channel), val);

	limit = 1000;
	while (--limit > 0) {
		if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
			break;
		udelay(10);
	}
	if (limit <= 0)
		return -ENODEV;
	return 0;
}

static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
{
	int err, channel = rp->rx_channel;
	u64 val;

	err = niu_rx_channel_reset(np, channel);
	if (err)
		return err;

	err = niu_rx_channel_lpage_init(np, channel);
	if (err)
		return err;

	niu_rx_channel_wred_init(np, rp);

	nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
	nw64(RX_DMA_CTL_STAT(channel),
	     (RX_DMA_CTL_STAT_MEX |
	      RX_DMA_CTL_STAT_RCRTHRES |
	      RX_DMA_CTL_STAT_RCRTO |
	      RX_DMA_CTL_STAT_RBR_EMPTY));
	nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
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David S. Miller 已提交
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	nw64(RXDMA_CFIG2(channel),
	     ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
	      RXDMA_CFIG2_FULL_HDR));
4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016
	nw64(RBR_CFIG_A(channel),
	     ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
	     (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
	err = niu_compute_rbr_cfig_b(rp, &val);
	if (err)
		return err;
	nw64(RBR_CFIG_B(channel), val);
	nw64(RCRCFIG_A(channel),
	     ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
	     (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
	nw64(RCRCFIG_B(channel),
	     ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
	     RCRCFIG_B_ENTOUT |
	     ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));

	err = niu_enable_rx_channel(np, channel, 1);
	if (err)
		return err;

	nw64(RBR_KICK(channel), rp->rbr_index);

	val = nr64(RX_DMA_CTL_STAT(channel));
	val |= RX_DMA_CTL_STAT_RBR_EMPTY;
	nw64(RX_DMA_CTL_STAT(channel), val);

	return 0;
}

static int niu_init_rx_channels(struct niu *np)
{
	unsigned long flags;
	u64 seed = jiffies_64;
	int err, i;

	niu_lock_parent(np, flags);
	nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
	nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
	niu_unlock_parent(np, flags);

	/* XXX RXDMA 32bit mode? XXX */

	niu_init_rdc_groups(np);
	niu_init_drr_weight(np);

	err = niu_init_hostinfo(np);
	if (err)
		return err;

	for (i = 0; i < np->num_rx_rings; i++) {
		struct rx_ring_info *rp = &np->rx_rings[i];

		err = niu_init_one_rx_channel(np, rp);
		if (err)
			return err;
	}

	return 0;
}

static int niu_set_ip_frag_rule(struct niu *np)
{
	struct niu_parent *parent = np->parent;
	struct niu_classifier *cp = &np->clas;
	struct niu_tcam_entry *tp;
	int index, err;

5017
	index = cp->tcam_top;
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	tp = &parent->tcam[index];

	/* Note that the noport bit is the same in both ipv4 and
	 * ipv6 format TCAM entries.
	 */
	memset(tp, 0, sizeof(*tp));
	tp->key[1] = TCAM_V4KEY1_NOPORT;
	tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
	tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
			  ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
	err = tcam_write(np, index, tp->key, tp->key_mask);
	if (err)
		return err;
	err = tcam_assoc_write(np, index, tp->assoc_data);
	if (err)
		return err;
5034 5035
	tp->valid = 1;
	cp->tcam_valid_entries++;
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	return 0;
}

static int niu_init_classifier_hw(struct niu *np)
{
	struct niu_parent *parent = np->parent;
	struct niu_classifier *cp = &np->clas;
	int i, err;

	nw64(H1POLY, cp->h1_init);
	nw64(H2POLY, cp->h2_init);

	err = niu_init_hostinfo(np);
	if (err)
		return err;

	for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
		struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];

		vlan_tbl_write(np, i, np->port,
			       vp->vlan_pref, vp->rdc_num);
	}

	for (i = 0; i < cp->num_alt_mac_mappings; i++) {
		struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];

		err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
						ap->rdc_num, ap->mac_pref);
		if (err)
			return err;
	}

	for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
		int index = i - CLASS_CODE_USER_PROG1;

		err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
		if (err)
			return err;
		err = niu_set_flow_key(np, i, parent->flow_key[index]);
		if (err)
			return err;
	}

	err = niu_set_ip_frag_rule(np);
	if (err)
		return err;

	tcam_enable(np, 1);

	return 0;
}

static int niu_zcp_write(struct niu *np, int index, u64 *data)
{
	nw64(ZCP_RAM_DATA0, data[0]);
	nw64(ZCP_RAM_DATA1, data[1]);
	nw64(ZCP_RAM_DATA2, data[2]);
	nw64(ZCP_RAM_DATA3, data[3]);
	nw64(ZCP_RAM_DATA4, data[4]);
	nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
	nw64(ZCP_RAM_ACC,
	     (ZCP_RAM_ACC_WRITE |
	      (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
	      (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));

	return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
				   1000, 100);
}

static int niu_zcp_read(struct niu *np, int index, u64 *data)
{
	int err;

	err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
				  1000, 100);
	if (err) {
5113 5114
		netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
			   (unsigned long long)nr64(ZCP_RAM_ACC));
5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125
		return err;
	}

	nw64(ZCP_RAM_ACC,
	     (ZCP_RAM_ACC_READ |
	      (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
	      (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));

	err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
				  1000, 100);
	if (err) {
5126 5127
		netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
			   (unsigned long long)nr64(ZCP_RAM_ACC));
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		return err;
	}

	data[0] = nr64(ZCP_RAM_DATA0);
	data[1] = nr64(ZCP_RAM_DATA1);
	data[2] = nr64(ZCP_RAM_DATA2);
	data[3] = nr64(ZCP_RAM_DATA3);
	data[4] = nr64(ZCP_RAM_DATA4);

	return 0;
}

static void niu_zcp_cfifo_reset(struct niu *np)
{
	u64 val = nr64(RESET_CFIFO);

	val |= RESET_CFIFO_RST(np->port);
	nw64(RESET_CFIFO, val);
	udelay(10);

	val &= ~RESET_CFIFO_RST(np->port);
	nw64(RESET_CFIFO, val);
}

static int niu_init_zcp(struct niu *np)
{
	u64 data[5], rbuf[5];
	int i, max, err;

	if (np->parent->plat_type != PLAT_TYPE_NIU) {
		if (np->port == 0 || np->port == 1)
			max = ATLAS_P0_P1_CFIFO_ENTRIES;
		else
			max = ATLAS_P2_P3_CFIFO_ENTRIES;
	} else
		max = NIU_CFIFO_ENTRIES;

	data[0] = 0;
	data[1] = 0;
	data[2] = 0;
	data[3] = 0;
	data[4] = 0;

	for (i = 0; i < max; i++) {
		err = niu_zcp_write(np, i, data);
		if (err)
			return err;
		err = niu_zcp_read(np, i, rbuf);
		if (err)
			return err;
	}

	niu_zcp_cfifo_reset(np);
	nw64(CFIFO_ECC(np->port), 0);
	nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
	(void) nr64(ZCP_INT_STAT);
	nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);

	return 0;
}

static void niu_ipp_write(struct niu *np, int index, u64 *data)
{
	u64 val = nr64_ipp(IPP_CFIG);

	nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
	nw64_ipp(IPP_DFIFO_WR_PTR, index);
	nw64_ipp(IPP_DFIFO_WR0, data[0]);
	nw64_ipp(IPP_DFIFO_WR1, data[1]);
	nw64_ipp(IPP_DFIFO_WR2, data[2]);
	nw64_ipp(IPP_DFIFO_WR3, data[3]);
	nw64_ipp(IPP_DFIFO_WR4, data[4]);
	nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
}

static void niu_ipp_read(struct niu *np, int index, u64 *data)
{
	nw64_ipp(IPP_DFIFO_RD_PTR, index);
	data[0] = nr64_ipp(IPP_DFIFO_RD0);
	data[1] = nr64_ipp(IPP_DFIFO_RD1);
	data[2] = nr64_ipp(IPP_DFIFO_RD2);
	data[3] = nr64_ipp(IPP_DFIFO_RD3);
	data[4] = nr64_ipp(IPP_DFIFO_RD4);
}

static int niu_ipp_reset(struct niu *np)
{
	return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
					  1000, 100, "IPP_CFIG");
}

static int niu_init_ipp(struct niu *np)
{
	u64 data[5], rbuf[5], val;
	int i, max, err;

	if (np->parent->plat_type != PLAT_TYPE_NIU) {
		if (np->port == 0 || np->port == 1)
			max = ATLAS_P0_P1_DFIFO_ENTRIES;
		else
			max = ATLAS_P2_P3_DFIFO_ENTRIES;
	} else
		max = NIU_DFIFO_ENTRIES;

	data[0] = 0;
	data[1] = 0;
	data[2] = 0;
	data[3] = 0;
	data[4] = 0;

	for (i = 0; i < max; i++) {
		niu_ipp_write(np, i, data);
		niu_ipp_read(np, i, rbuf);
	}

	(void) nr64_ipp(IPP_INT_STAT);
	(void) nr64_ipp(IPP_INT_STAT);

	err = niu_ipp_reset(np);
	if (err)
		return err;

	(void) nr64_ipp(IPP_PKT_DIS);
	(void) nr64_ipp(IPP_BAD_CS_CNT);
	(void) nr64_ipp(IPP_ECC);

	(void) nr64_ipp(IPP_INT_STAT);

	nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);

	val = nr64_ipp(IPP_CFIG);
	val &= ~IPP_CFIG_IP_MAX_PKT;
	val |= (IPP_CFIG_IPP_ENABLE |
		IPP_CFIG_DFIFO_ECC_EN |
		IPP_CFIG_DROP_BAD_CRC |
		IPP_CFIG_CKSUM_EN |
		(0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
	nw64_ipp(IPP_CFIG, val);

	return 0;
}

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static void niu_handle_led(struct niu *np, int status)
5271 5272 5273 5274 5275 5276
{
	u64 val;
	val = nr64_mac(XMAC_CONFIG);

	if ((np->flags & NIU_FLAGS_10G) != 0 &&
	    (np->flags & NIU_FLAGS_FIBER) != 0) {
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		if (status) {
5278 5279 5280 5281 5282 5283 5284 5285
			val |= XMAC_CONFIG_LED_POLARITY;
			val &= ~XMAC_CONFIG_FORCE_LED_ON;
		} else {
			val |= XMAC_CONFIG_FORCE_LED_ON;
			val &= ~XMAC_CONFIG_LED_POLARITY;
		}
	}

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	nw64_mac(XMAC_CONFIG, val);
}

static void niu_init_xif_xmac(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	u64 val;

5294 5295 5296 5297 5298 5299
	if (np->flags & NIU_FLAGS_XCVR_SERDES) {
		val = nr64(MIF_CONFIG);
		val |= MIF_CONFIG_ATCA_GE;
		nw64(MIF_CONFIG, val);
	}

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	val = nr64_mac(XMAC_CONFIG);
5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315
	val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;

	val |= XMAC_CONFIG_TX_OUTPUT_EN;

	if (lp->loopback_mode == LOOPBACK_MAC) {
		val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
		val |= XMAC_CONFIG_LOOPBACK;
	} else {
		val &= ~XMAC_CONFIG_LOOPBACK;
	}

	if (np->flags & NIU_FLAGS_10G) {
		val &= ~XMAC_CONFIG_LFS_DISABLE;
	} else {
		val |= XMAC_CONFIG_LFS_DISABLE;
5316 5317
		if (!(np->flags & NIU_FLAGS_FIBER) &&
		    !(np->flags & NIU_FLAGS_XCVR_SERDES))
5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336
			val |= XMAC_CONFIG_1G_PCS_BYPASS;
		else
			val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
	}

	val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;

	if (lp->active_speed == SPEED_100)
		val |= XMAC_CONFIG_SEL_CLK_25MHZ;
	else
		val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;

	nw64_mac(XMAC_CONFIG, val);

	val = nr64_mac(XMAC_CONFIG);
	val &= ~XMAC_CONFIG_MODE_MASK;
	if (np->flags & NIU_FLAGS_10G) {
		val |= XMAC_CONFIG_MODE_XGMII;
	} else {
5337
		if (lp->active_speed == SPEED_1000)
5338
			val |= XMAC_CONFIG_MODE_GMII;
5339 5340
		else
			val |= XMAC_CONFIG_MODE_MII;
5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385
	}

	nw64_mac(XMAC_CONFIG, val);
}

static void niu_init_xif_bmac(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	u64 val;

	val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;

	if (lp->loopback_mode == LOOPBACK_MAC)
		val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
	else
		val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;

	if (lp->active_speed == SPEED_1000)
		val |= BMAC_XIF_CONFIG_GMII_MODE;
	else
		val &= ~BMAC_XIF_CONFIG_GMII_MODE;

	val &= ~(BMAC_XIF_CONFIG_LINK_LED |
		 BMAC_XIF_CONFIG_LED_POLARITY);

	if (!(np->flags & NIU_FLAGS_10G) &&
	    !(np->flags & NIU_FLAGS_FIBER) &&
	    lp->active_speed == SPEED_100)
		val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
	else
		val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;

	nw64_mac(BMAC_XIF_CONFIG, val);
}

static void niu_init_xif(struct niu *np)
{
	if (np->flags & NIU_FLAGS_XMAC)
		niu_init_xif_xmac(np);
	else
		niu_init_xif_bmac(np);
}

static void niu_pcs_mii_reset(struct niu *np)
{
5386
	int limit = 1000;
5387 5388 5389
	u64 val = nr64_pcs(PCS_MII_CTL);
	val |= PCS_MII_CTL_RST;
	nw64_pcs(PCS_MII_CTL, val);
5390 5391 5392 5393
	while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
		udelay(100);
		val = nr64_pcs(PCS_MII_CTL);
	}
5394 5395 5396 5397
}

static void niu_xpcs_reset(struct niu *np)
{
5398
	int limit = 1000;
5399 5400 5401
	u64 val = nr64_xpcs(XPCS_CONTROL1);
	val |= XPCS_CONTROL1_RESET;
	nw64_xpcs(XPCS_CONTROL1, val);
5402 5403 5404 5405
	while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
		udelay(100);
		val = nr64_xpcs(XPCS_CONTROL1);
	}
5406 5407 5408 5409 5410 5411 5412
}

static int niu_init_pcs(struct niu *np)
{
	struct niu_link_config *lp = &np->link_config;
	u64 val;

5413 5414 5415
	switch (np->flags & (NIU_FLAGS_10G |
			     NIU_FLAGS_FIBER |
			     NIU_FLAGS_XCVR_SERDES)) {
5416 5417 5418 5419 5420 5421 5422 5423 5424
	case NIU_FLAGS_FIBER:
		/* 1G fiber */
		nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
		nw64_pcs(PCS_DPATH_MODE, 0);
		niu_pcs_mii_reset(np);
		break;

	case NIU_FLAGS_10G:
	case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5425 5426
	case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
		/* 10G SERDES */
5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448
		if (!(np->flags & NIU_FLAGS_XMAC))
			return -EINVAL;

		/* 10G copper or fiber */
		val = nr64_mac(XMAC_CONFIG);
		val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
		nw64_mac(XMAC_CONFIG, val);

		niu_xpcs_reset(np);

		val = nr64_xpcs(XPCS_CONTROL1);
		if (lp->loopback_mode == LOOPBACK_PHY)
			val |= XPCS_CONTROL1_LOOPBACK;
		else
			val &= ~XPCS_CONTROL1_LOOPBACK;
		nw64_xpcs(XPCS_CONTROL1, val);

		nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
		(void) nr64_xpcs(XPCS_SYMERR_CNT01);
		(void) nr64_xpcs(XPCS_SYMERR_CNT23);
		break;

5449 5450 5451 5452 5453 5454 5455 5456

	case NIU_FLAGS_XCVR_SERDES:
		/* 1G SERDES */
		niu_pcs_mii_reset(np);
		nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
		nw64_pcs(PCS_DPATH_MODE, 0);
		break;

5457 5458
	case 0:
		/* 1G copper */
5459 5460
	case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
		/* 1G RGMII FIBER */
5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491
		nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
		niu_pcs_mii_reset(np);
		break;

	default:
		return -EINVAL;
	}

	return 0;
}

static int niu_reset_tx_xmac(struct niu *np)
{
	return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
					  (XTXMAC_SW_RST_REG_RS |
					   XTXMAC_SW_RST_SOFT_RST),
					  1000, 100, "XTXMAC_SW_RST");
}

static int niu_reset_tx_bmac(struct niu *np)
{
	int limit;

	nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
	limit = 1000;
	while (--limit >= 0) {
		if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
			break;
		udelay(100);
	}
	if (limit < 0) {
5492
		dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574
			np->port,
			(unsigned long long) nr64_mac(BTXMAC_SW_RST));
		return -ENODEV;
	}

	return 0;
}

static int niu_reset_tx_mac(struct niu *np)
{
	if (np->flags & NIU_FLAGS_XMAC)
		return niu_reset_tx_xmac(np);
	else
		return niu_reset_tx_bmac(np);
}

static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
{
	u64 val;

	val = nr64_mac(XMAC_MIN);
	val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
		 XMAC_MIN_RX_MIN_PKT_SIZE);
	val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
	val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
	nw64_mac(XMAC_MIN, val);

	nw64_mac(XMAC_MAX, max);

	nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);

	val = nr64_mac(XMAC_IPG);
	if (np->flags & NIU_FLAGS_10G) {
		val &= ~XMAC_IPG_IPG_XGMII;
		val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
	} else {
		val &= ~XMAC_IPG_IPG_MII_GMII;
		val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
	}
	nw64_mac(XMAC_IPG, val);

	val = nr64_mac(XMAC_CONFIG);
	val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
		 XMAC_CONFIG_STRETCH_MODE |
		 XMAC_CONFIG_VAR_MIN_IPG_EN |
		 XMAC_CONFIG_TX_ENABLE);
	nw64_mac(XMAC_CONFIG, val);

	nw64_mac(TXMAC_FRM_CNT, 0);
	nw64_mac(TXMAC_BYTE_CNT, 0);
}

static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
{
	u64 val;

	nw64_mac(BMAC_MIN_FRAME, min);
	nw64_mac(BMAC_MAX_FRAME, max);

	nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
	nw64_mac(BMAC_CTRL_TYPE, 0x8808);
	nw64_mac(BMAC_PREAMBLE_SIZE, 7);

	val = nr64_mac(BTXMAC_CONFIG);
	val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
		 BTXMAC_CONFIG_ENABLE);
	nw64_mac(BTXMAC_CONFIG, val);
}

static void niu_init_tx_mac(struct niu *np)
{
	u64 min, max;

	min = 64;
	if (np->dev->mtu > ETH_DATA_LEN)
		max = 9216;
	else
		max = 1522;

	/* The XMAC_MIN register only accepts values for TX min which
	 * have the low 3 bits cleared.
	 */
5575
	BUG_ON(min & 0x7);
5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592

	if (np->flags & NIU_FLAGS_XMAC)
		niu_init_tx_xmac(np, min, max);
	else
		niu_init_tx_bmac(np, min, max);
}

static int niu_reset_rx_xmac(struct niu *np)
{
	int limit;

	nw64_mac(XRXMAC_SW_RST,
		 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
	limit = 1000;
	while (--limit >= 0) {
		if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
						 XRXMAC_SW_RST_SOFT_RST)))
5593
			break;
5594 5595 5596
		udelay(100);
	}
	if (limit < 0) {
5597
		dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617
			np->port,
			(unsigned long long) nr64_mac(XRXMAC_SW_RST));
		return -ENODEV;
	}

	return 0;
}

static int niu_reset_rx_bmac(struct niu *np)
{
	int limit;

	nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
	limit = 1000;
	while (--limit >= 0) {
		if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
			break;
		udelay(100);
	}
	if (limit < 0) {
5618
		dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678 5679 5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921
			np->port,
			(unsigned long long) nr64_mac(BRXMAC_SW_RST));
		return -ENODEV;
	}

	return 0;
}

static int niu_reset_rx_mac(struct niu *np)
{
	if (np->flags & NIU_FLAGS_XMAC)
		return niu_reset_rx_xmac(np);
	else
		return niu_reset_rx_bmac(np);
}

static void niu_init_rx_xmac(struct niu *np)
{
	struct niu_parent *parent = np->parent;
	struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
	int first_rdc_table = tp->first_table_num;
	unsigned long i;
	u64 val;

	nw64_mac(XMAC_ADD_FILT0, 0);
	nw64_mac(XMAC_ADD_FILT1, 0);
	nw64_mac(XMAC_ADD_FILT2, 0);
	nw64_mac(XMAC_ADD_FILT12_MASK, 0);
	nw64_mac(XMAC_ADD_FILT00_MASK, 0);
	for (i = 0; i < MAC_NUM_HASH; i++)
		nw64_mac(XMAC_HASH_TBL(i), 0);
	nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
	niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
	niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);

	val = nr64_mac(XMAC_CONFIG);
	val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
		 XMAC_CONFIG_PROMISCUOUS |
		 XMAC_CONFIG_PROMISC_GROUP |
		 XMAC_CONFIG_ERR_CHK_DIS |
		 XMAC_CONFIG_RX_CRC_CHK_DIS |
		 XMAC_CONFIG_RESERVED_MULTICAST |
		 XMAC_CONFIG_RX_CODEV_CHK_DIS |
		 XMAC_CONFIG_ADDR_FILTER_EN |
		 XMAC_CONFIG_RCV_PAUSE_ENABLE |
		 XMAC_CONFIG_STRIP_CRC |
		 XMAC_CONFIG_PASS_FLOW_CTRL |
		 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
	val |= (XMAC_CONFIG_HASH_FILTER_EN);
	nw64_mac(XMAC_CONFIG, val);

	nw64_mac(RXMAC_BT_CNT, 0);
	nw64_mac(RXMAC_BC_FRM_CNT, 0);
	nw64_mac(RXMAC_MC_FRM_CNT, 0);
	nw64_mac(RXMAC_FRAG_CNT, 0);
	nw64_mac(RXMAC_HIST_CNT1, 0);
	nw64_mac(RXMAC_HIST_CNT2, 0);
	nw64_mac(RXMAC_HIST_CNT3, 0);
	nw64_mac(RXMAC_HIST_CNT4, 0);
	nw64_mac(RXMAC_HIST_CNT5, 0);
	nw64_mac(RXMAC_HIST_CNT6, 0);
	nw64_mac(RXMAC_HIST_CNT7, 0);
	nw64_mac(RXMAC_MPSZER_CNT, 0);
	nw64_mac(RXMAC_CRC_ER_CNT, 0);
	nw64_mac(RXMAC_CD_VIO_CNT, 0);
	nw64_mac(LINK_FAULT_CNT, 0);
}

static void niu_init_rx_bmac(struct niu *np)
{
	struct niu_parent *parent = np->parent;
	struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
	int first_rdc_table = tp->first_table_num;
	unsigned long i;
	u64 val;

	nw64_mac(BMAC_ADD_FILT0, 0);
	nw64_mac(BMAC_ADD_FILT1, 0);
	nw64_mac(BMAC_ADD_FILT2, 0);
	nw64_mac(BMAC_ADD_FILT12_MASK, 0);
	nw64_mac(BMAC_ADD_FILT00_MASK, 0);
	for (i = 0; i < MAC_NUM_HASH; i++)
		nw64_mac(BMAC_HASH_TBL(i), 0);
	niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
	niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
	nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);

	val = nr64_mac(BRXMAC_CONFIG);
	val &= ~(BRXMAC_CONFIG_ENABLE |
		 BRXMAC_CONFIG_STRIP_PAD |
		 BRXMAC_CONFIG_STRIP_FCS |
		 BRXMAC_CONFIG_PROMISC |
		 BRXMAC_CONFIG_PROMISC_GRP |
		 BRXMAC_CONFIG_ADDR_FILT_EN |
		 BRXMAC_CONFIG_DISCARD_DIS);
	val |= (BRXMAC_CONFIG_HASH_FILT_EN);
	nw64_mac(BRXMAC_CONFIG, val);

	val = nr64_mac(BMAC_ADDR_CMPEN);
	val |= BMAC_ADDR_CMPEN_EN0;
	nw64_mac(BMAC_ADDR_CMPEN, val);
}

static void niu_init_rx_mac(struct niu *np)
{
	niu_set_primary_mac(np, np->dev->dev_addr);

	if (np->flags & NIU_FLAGS_XMAC)
		niu_init_rx_xmac(np);
	else
		niu_init_rx_bmac(np);
}

static void niu_enable_tx_xmac(struct niu *np, int on)
{
	u64 val = nr64_mac(XMAC_CONFIG);

	if (on)
		val |= XMAC_CONFIG_TX_ENABLE;
	else
		val &= ~XMAC_CONFIG_TX_ENABLE;
	nw64_mac(XMAC_CONFIG, val);
}

static void niu_enable_tx_bmac(struct niu *np, int on)
{
	u64 val = nr64_mac(BTXMAC_CONFIG);

	if (on)
		val |= BTXMAC_CONFIG_ENABLE;
	else
		val &= ~BTXMAC_CONFIG_ENABLE;
	nw64_mac(BTXMAC_CONFIG, val);
}

static void niu_enable_tx_mac(struct niu *np, int on)
{
	if (np->flags & NIU_FLAGS_XMAC)
		niu_enable_tx_xmac(np, on);
	else
		niu_enable_tx_bmac(np, on);
}

static void niu_enable_rx_xmac(struct niu *np, int on)
{
	u64 val = nr64_mac(XMAC_CONFIG);

	val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
		 XMAC_CONFIG_PROMISCUOUS);

	if (np->flags & NIU_FLAGS_MCAST)
		val |= XMAC_CONFIG_HASH_FILTER_EN;
	if (np->flags & NIU_FLAGS_PROMISC)
		val |= XMAC_CONFIG_PROMISCUOUS;

	if (on)
		val |= XMAC_CONFIG_RX_MAC_ENABLE;
	else
		val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
	nw64_mac(XMAC_CONFIG, val);
}

static void niu_enable_rx_bmac(struct niu *np, int on)
{
	u64 val = nr64_mac(BRXMAC_CONFIG);

	val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
		 BRXMAC_CONFIG_PROMISC);

	if (np->flags & NIU_FLAGS_MCAST)
		val |= BRXMAC_CONFIG_HASH_FILT_EN;
	if (np->flags & NIU_FLAGS_PROMISC)
		val |= BRXMAC_CONFIG_PROMISC;

	if (on)
		val |= BRXMAC_CONFIG_ENABLE;
	else
		val &= ~BRXMAC_CONFIG_ENABLE;
	nw64_mac(BRXMAC_CONFIG, val);
}

static void niu_enable_rx_mac(struct niu *np, int on)
{
	if (np->flags & NIU_FLAGS_XMAC)
		niu_enable_rx_xmac(np, on);
	else
		niu_enable_rx_bmac(np, on);
}

static int niu_init_mac(struct niu *np)
{
	int err;

	niu_init_xif(np);
	err = niu_init_pcs(np);
	if (err)
		return err;

	err = niu_reset_tx_mac(np);
	if (err)
		return err;
	niu_init_tx_mac(np);
	err = niu_reset_rx_mac(np);
	if (err)
		return err;
	niu_init_rx_mac(np);

	/* This looks hookey but the RX MAC reset we just did will
	 * undo some of the state we setup in niu_init_tx_mac() so we
	 * have to call it again.  In particular, the RX MAC reset will
	 * set the XMAC_MAX register back to it's default value.
	 */
	niu_init_tx_mac(np);
	niu_enable_tx_mac(np, 1);

	niu_enable_rx_mac(np, 1);

	return 0;
}

static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
{
	(void) niu_tx_channel_stop(np, rp->tx_channel);
}

static void niu_stop_tx_channels(struct niu *np)
{
	int i;

	for (i = 0; i < np->num_tx_rings; i++) {
		struct tx_ring_info *rp = &np->tx_rings[i];

		niu_stop_one_tx_channel(np, rp);
	}
}

static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
{
	(void) niu_tx_channel_reset(np, rp->tx_channel);
}

static void niu_reset_tx_channels(struct niu *np)
{
	int i;

	for (i = 0; i < np->num_tx_rings; i++) {
		struct tx_ring_info *rp = &np->tx_rings[i];

		niu_reset_one_tx_channel(np, rp);
	}
}

static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
{
	(void) niu_enable_rx_channel(np, rp->rx_channel, 0);
}

static void niu_stop_rx_channels(struct niu *np)
{
	int i;

	for (i = 0; i < np->num_rx_rings; i++) {
		struct rx_ring_info *rp = &np->rx_rings[i];

		niu_stop_one_rx_channel(np, rp);
	}
}

static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
{
	int channel = rp->rx_channel;

	(void) niu_rx_channel_reset(np, channel);
	nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
	nw64(RX_DMA_CTL_STAT(channel), 0);
	(void) niu_enable_rx_channel(np, channel, 0);
}

static void niu_reset_rx_channels(struct niu *np)
{
	int i;

	for (i = 0; i < np->num_rx_rings; i++) {
		struct rx_ring_info *rp = &np->rx_rings[i];

		niu_reset_one_rx_channel(np, rp);
	}
}

static void niu_disable_ipp(struct niu *np)
{
	u64 rd, wr, val;
	int limit;

	rd = nr64_ipp(IPP_DFIFO_RD_PTR);
	wr = nr64_ipp(IPP_DFIFO_WR_PTR);
	limit = 100;
	while (--limit >= 0 && (rd != wr)) {
		rd = nr64_ipp(IPP_DFIFO_RD_PTR);
		wr = nr64_ipp(IPP_DFIFO_WR_PTR);
	}
	if (limit < 0 &&
	    (rd != 0 && wr != 1)) {
5922 5923 5924
		netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
			   (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
			   (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5925 5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940
	}

	val = nr64_ipp(IPP_CFIG);
	val &= ~(IPP_CFIG_IPP_ENABLE |
		 IPP_CFIG_DFIFO_ECC_EN |
		 IPP_CFIG_DROP_BAD_CRC |
		 IPP_CFIG_CKSUM_EN);
	nw64_ipp(IPP_CFIG, val);

	(void) niu_ipp_reset(np);
}

static int niu_init_hw(struct niu *np)
{
	int i, err;

5941
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5942 5943 5944 5945
	niu_txc_enable_port(np, 1);
	niu_txc_port_dma_enable(np, 1);
	niu_txc_set_imask(np, 0);

5946
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5947 5948 5949 5950 5951 5952 5953 5954
	for (i = 0; i < np->num_tx_rings; i++) {
		struct tx_ring_info *rp = &np->tx_rings[i];

		err = niu_init_one_tx_channel(np, rp);
		if (err)
			return err;
	}

5955
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5956 5957 5958 5959
	err = niu_init_rx_channels(np);
	if (err)
		goto out_uninit_tx_channels;

5960
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5961 5962 5963 5964
	err = niu_init_classifier_hw(np);
	if (err)
		goto out_uninit_rx_channels;

5965
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5966 5967 5968 5969
	err = niu_init_zcp(np);
	if (err)
		goto out_uninit_rx_channels;

5970
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5971 5972 5973 5974
	err = niu_init_ipp(np);
	if (err)
		goto out_uninit_rx_channels;

5975
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5976 5977 5978 5979 5980 5981 5982
	err = niu_init_mac(np);
	if (err)
		goto out_uninit_ipp;

	return 0;

out_uninit_ipp:
5983
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5984 5985 5986
	niu_disable_ipp(np);

out_uninit_rx_channels:
5987
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5988 5989 5990 5991
	niu_stop_rx_channels(np);
	niu_reset_rx_channels(np);

out_uninit_tx_channels:
5992
	netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
5993 5994 5995 5996 5997 5998 5999 6000
	niu_stop_tx_channels(np);
	niu_reset_tx_channels(np);

	return err;
}

static void niu_stop_hw(struct niu *np)
{
6001
	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6002 6003
	niu_enable_interrupts(np, 0);

6004
	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6005 6006
	niu_enable_rx_mac(np, 0);

6007
	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6008 6009
	niu_disable_ipp(np);

6010
	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6011 6012
	niu_stop_tx_channels(np);

6013
	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6014 6015
	niu_stop_rx_channels(np);

6016
	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6017 6018
	niu_reset_tx_channels(np);

6019
	netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6020 6021 6022
	niu_reset_rx_channels(np);
}

R
Robert Olsson 已提交
6023 6024 6025 6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045
static void niu_set_irq_name(struct niu *np)
{
	int port = np->port;
	int i, j = 1;

	sprintf(np->irq_name[0], "%s:MAC", np->dev->name);

	if (port == 0) {
		sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
		sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
		j = 3;
	}

	for (i = 0; i < np->num_ldg - j; i++) {
		if (i < np->num_rx_rings)
			sprintf(np->irq_name[i+j], "%s-rx-%d",
				np->dev->name, i);
		else if (i < np->num_tx_rings + np->num_rx_rings)
			sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
				i - np->num_rx_rings);
	}
}

6046 6047 6048 6049
static int niu_request_irq(struct niu *np)
{
	int i, j, err;

R
Robert Olsson 已提交
6050 6051
	niu_set_irq_name(np);

6052 6053 6054 6055
	err = 0;
	for (i = 0; i < np->num_ldg; i++) {
		struct niu_ldg *lp = &np->ldg[i];

6056
		err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
R
Robert Olsson 已提交
6057
				  np->irq_name[i], lp);
6058 6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138 6139 6140 6141 6142
		if (err)
			goto out_free_irqs;

	}

	return 0;

out_free_irqs:
	for (j = 0; j < i; j++) {
		struct niu_ldg *lp = &np->ldg[j];

		free_irq(lp->irq, lp);
	}
	return err;
}

static void niu_free_irq(struct niu *np)
{
	int i;

	for (i = 0; i < np->num_ldg; i++) {
		struct niu_ldg *lp = &np->ldg[i];

		free_irq(lp->irq, lp);
	}
}

static void niu_enable_napi(struct niu *np)
{
	int i;

	for (i = 0; i < np->num_ldg; i++)
		napi_enable(&np->ldg[i].napi);
}

static void niu_disable_napi(struct niu *np)
{
	int i;

	for (i = 0; i < np->num_ldg; i++)
		napi_disable(&np->ldg[i].napi);
}

static int niu_open(struct net_device *dev)
{
	struct niu *np = netdev_priv(dev);
	int err;

	netif_carrier_off(dev);

	err = niu_alloc_channels(np);
	if (err)
		goto out_err;

	err = niu_enable_interrupts(np, 0);
	if (err)
		goto out_free_channels;

	err = niu_request_irq(np);
	if (err)
		goto out_free_channels;

	niu_enable_napi(np);

	spin_lock_irq(&np->lock);

	err = niu_init_hw(np);
	if (!err) {
		init_timer(&np->timer);
		np->timer.expires = jiffies + HZ;
		np->timer.data = (unsigned long) np;
		np->timer.function = niu_timer;

		err = niu_enable_interrupts(np, 1);
		if (err)
			niu_stop_hw(np);
	}

	spin_unlock_irq(&np->lock);

	if (err) {
		niu_disable_napi(np);
		goto out_free_irq;
	}

6143
	netif_tx_start_all_queues(dev);
6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166

	if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
		netif_carrier_on(dev);

	add_timer(&np->timer);

	return 0;

out_free_irq:
	niu_free_irq(np);

out_free_channels:
	niu_free_channels(np);

out_err:
	return err;
}

static void niu_full_shutdown(struct niu *np, struct net_device *dev)
{
	cancel_work_sync(&np->reset_task);

	niu_disable_napi(np);
6167
	netif_tx_stop_all_queues(dev);
6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187

	del_timer_sync(&np->timer);

	spin_lock_irq(&np->lock);

	niu_stop_hw(np);

	spin_unlock_irq(&np->lock);
}

static int niu_close(struct net_device *dev)
{
	struct niu *np = netdev_priv(dev);

	niu_full_shutdown(np, dev);

	niu_free_irq(np);

	niu_free_channels(np);

M
Mirko Lindner 已提交
6188 6189
	niu_handle_led(np, 0);

6190 6191 6192 6193 6194 6195 6196 6197 6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233 6234 6235 6236 6237 6238
	return 0;
}

static void niu_sync_xmac_stats(struct niu *np)
{
	struct niu_xmac_stats *mp = &np->mac_stats.xmac;

	mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
	mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);

	mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
	mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
	mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
	mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
	mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
	mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
	mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
	mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
	mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
	mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
	mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
	mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
	mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
	mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
	mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
	mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
}

static void niu_sync_bmac_stats(struct niu *np)
{
	struct niu_bmac_stats *mp = &np->mac_stats.bmac;

	mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
	mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);

	mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
	mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
	mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
	mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
}

static void niu_sync_mac_stats(struct niu *np)
{
	if (np->flags & NIU_FLAGS_XMAC)
		niu_sync_xmac_stats(np);
	else
		niu_sync_bmac_stats(np);
}

6239 6240
static void niu_get_rx_stats(struct niu *np,
			     struct rtnl_link_stats64 *stats)
6241
{
6242
	u64 pkts, dropped, errors, bytes;
6243
	struct rx_ring_info *rx_rings;
6244 6245 6246
	int i;

	pkts = dropped = errors = bytes = 0;
6247 6248 6249 6250 6251

	rx_rings = ACCESS_ONCE(np->rx_rings);
	if (!rx_rings)
		goto no_rings;

6252
	for (i = 0; i < np->num_rx_rings; i++) {
6253
		struct rx_ring_info *rp = &rx_rings[i];
6254

6255 6256
		niu_sync_rx_discard_stats(np, rp, 0);

6257 6258 6259 6260 6261
		pkts += rp->rx_packets;
		bytes += rp->rx_bytes;
		dropped += rp->rx_dropped;
		errors += rp->rx_errors;
	}
6262 6263

no_rings:
6264 6265 6266 6267
	stats->rx_packets = pkts;
	stats->rx_bytes = bytes;
	stats->rx_dropped = dropped;
	stats->rx_errors = errors;
6268 6269
}

6270 6271
static void niu_get_tx_stats(struct niu *np,
			     struct rtnl_link_stats64 *stats)
6272
{
6273
	u64 pkts, errors, bytes;
6274
	struct tx_ring_info *tx_rings;
6275 6276 6277
	int i;

	pkts = errors = bytes = 0;
6278 6279 6280 6281 6282

	tx_rings = ACCESS_ONCE(np->tx_rings);
	if (!tx_rings)
		goto no_rings;

6283
	for (i = 0; i < np->num_tx_rings; i++) {
6284
		struct tx_ring_info *rp = &tx_rings[i];
6285 6286 6287 6288 6289

		pkts += rp->tx_packets;
		bytes += rp->tx_bytes;
		errors += rp->tx_errors;
	}
6290 6291

no_rings:
6292 6293 6294
	stats->tx_packets = pkts;
	stats->tx_bytes = bytes;
	stats->tx_errors = errors;
6295 6296
}

6297 6298
static struct rtnl_link_stats64 *niu_get_stats(struct net_device *dev,
					       struct rtnl_link_stats64 *stats)
6299 6300 6301
{
	struct niu *np = netdev_priv(dev);

6302
	if (netif_running(dev)) {
6303 6304
		niu_get_rx_stats(np, stats);
		niu_get_tx_stats(np, stats);
6305
	}
6306 6307

	return stats;
6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337
}

static void niu_load_hash_xmac(struct niu *np, u16 *hash)
{
	int i;

	for (i = 0; i < 16; i++)
		nw64_mac(XMAC_HASH_TBL(i), hash[i]);
}

static void niu_load_hash_bmac(struct niu *np, u16 *hash)
{
	int i;

	for (i = 0; i < 16; i++)
		nw64_mac(BMAC_HASH_TBL(i), hash[i]);
}

static void niu_load_hash(struct niu *np, u16 *hash)
{
	if (np->flags & NIU_FLAGS_XMAC)
		niu_load_hash_xmac(np, hash);
	else
		niu_load_hash_bmac(np, hash);
}

static void niu_set_rx_mode(struct net_device *dev)
{
	struct niu *np = netdev_priv(dev);
	int i, alt_cnt, err;
J
Jiri Pirko 已提交
6338
	struct netdev_hw_addr *ha;
6339 6340 6341 6342 6343 6344 6345 6346 6347
	unsigned long flags;
	u16 hash[16] = { 0, };

	spin_lock_irqsave(&np->lock, flags);
	niu_enable_rx_mac(np, 0);

	np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
	if (dev->flags & IFF_PROMISC)
		np->flags |= NIU_FLAGS_PROMISC;
6348
	if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6349 6350
		np->flags |= NIU_FLAGS_MCAST;

6351
	alt_cnt = netdev_uc_count(dev);
6352 6353 6354 6355 6356 6357 6358 6359
	if (alt_cnt > niu_num_alt_addr(np)) {
		alt_cnt = 0;
		np->flags |= NIU_FLAGS_PROMISC;
	}

	if (alt_cnt) {
		int index = 0;

6360
		netdev_for_each_uc_addr(ha, dev) {
J
Jiri Pirko 已提交
6361
			err = niu_set_alt_mac(np, index, ha->addr);
6362
			if (err)
6363 6364
				netdev_warn(dev, "Error %d adding alt mac %d\n",
					    err, index);
6365 6366
			err = niu_enable_alt_mac(np, index, 1);
			if (err)
6367 6368
				netdev_warn(dev, "Error %d enabling alt mac %d\n",
					    err, index);
6369 6370 6371 6372

			index++;
		}
	} else {
6373 6374 6375 6376 6377 6378
		int alt_start;
		if (np->flags & NIU_FLAGS_XMAC)
			alt_start = 0;
		else
			alt_start = 1;
		for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6379 6380
			err = niu_enable_alt_mac(np, i, 0);
			if (err)
6381 6382
				netdev_warn(dev, "Error %d disabling alt mac %d\n",
					    err, i);
6383 6384 6385 6386 6387
		}
	}
	if (dev->flags & IFF_ALLMULTI) {
		for (i = 0; i < 16; i++)
			hash[i] = 0xffff;
6388
	} else if (!netdev_mc_empty(dev)) {
6389 6390
		netdev_for_each_mc_addr(ha, dev) {
			u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410

			crc >>= 24;
			hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
		}
	}

	if (np->flags & NIU_FLAGS_MCAST)
		niu_load_hash(np, hash);

	niu_enable_rx_mac(np, 1);
	spin_unlock_irqrestore(&np->lock, flags);
}

static int niu_set_mac_addr(struct net_device *dev, void *p)
{
	struct niu *np = netdev_priv(dev);
	struct sockaddr *addr = p;
	unsigned long flags;

	if (!is_valid_ether_addr(addr->sa_data))
6411
		return -EADDRNOTAVAIL;
6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446

	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);

	if (!netif_running(dev))
		return 0;

	spin_lock_irqsave(&np->lock, flags);
	niu_enable_rx_mac(np, 0);
	niu_set_primary_mac(np, dev->dev_addr);
	niu_enable_rx_mac(np, 1);
	spin_unlock_irqrestore(&np->lock, flags);

	return 0;
}

static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
	return -EOPNOTSUPP;
}

static void niu_netif_stop(struct niu *np)
{
	np->dev->trans_start = jiffies;	/* prevent tx timeout */

	niu_disable_napi(np);

	netif_tx_disable(np->dev);
}

static void niu_netif_start(struct niu *np)
{
	/* NOTE: unconditional netif_wake_queue is only appropriate
	 * so long as all callers are assured to have free tx slots
	 * (such as after niu_init_hw).
	 */
6447
	netif_tx_wake_all_queues(np->dev);
6448 6449 6450 6451 6452 6453

	niu_enable_napi(np);

	niu_enable_interrupts(np, 1);
}

S
Santwona Behera 已提交
6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503
static void niu_reset_buffers(struct niu *np)
{
	int i, j, k, err;

	if (np->rx_rings) {
		for (i = 0; i < np->num_rx_rings; i++) {
			struct rx_ring_info *rp = &np->rx_rings[i];

			for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
				struct page *page;

				page = rp->rxhash[j];
				while (page) {
					struct page *next =
						(struct page *) page->mapping;
					u64 base = page->index;
					base = base >> RBR_DESCR_ADDR_SHIFT;
					rp->rbr[k++] = cpu_to_le32(base);
					page = next;
				}
			}
			for (; k < MAX_RBR_RING_SIZE; k++) {
				err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
				if (unlikely(err))
					break;
			}

			rp->rbr_index = rp->rbr_table_size - 1;
			rp->rcr_index = 0;
			rp->rbr_pending = 0;
			rp->rbr_refill_pending = 0;
		}
	}
	if (np->tx_rings) {
		for (i = 0; i < np->num_tx_rings; i++) {
			struct tx_ring_info *rp = &np->tx_rings[i];

			for (j = 0; j < MAX_TX_RING_SIZE; j++) {
				if (rp->tx_buffs[j].skb)
					(void) release_tx_packet(np, rp, j);
			}

			rp->pending = MAX_TX_RING_SIZE;
			rp->prod = 0;
			rp->cons = 0;
			rp->wrap_bit = 0;
		}
	}
}

6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 6525
static void niu_reset_task(struct work_struct *work)
{
	struct niu *np = container_of(work, struct niu, reset_task);
	unsigned long flags;
	int err;

	spin_lock_irqsave(&np->lock, flags);
	if (!netif_running(np->dev)) {
		spin_unlock_irqrestore(&np->lock, flags);
		return;
	}

	spin_unlock_irqrestore(&np->lock, flags);

	del_timer_sync(&np->timer);

	niu_netif_stop(np);

	spin_lock_irqsave(&np->lock, flags);

	niu_stop_hw(np);

S
Santwona Behera 已提交
6526 6527 6528 6529 6530 6531
	spin_unlock_irqrestore(&np->lock, flags);

	niu_reset_buffers(np);

	spin_lock_irqsave(&np->lock, flags);

6532 6533 6534 6535 6536 6537 6538 6539 6540 6541 6542 6543 6544 6545
	err = niu_init_hw(np);
	if (!err) {
		np->timer.expires = jiffies + HZ;
		add_timer(&np->timer);
		niu_netif_start(np);
	}

	spin_unlock_irqrestore(&np->lock, flags);
}

static void niu_tx_timeout(struct net_device *dev)
{
	struct niu *np = netdev_priv(dev);

6546
	dev_err(np->device, "%s: Transmit timed out, resetting\n",
6547 6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582
		dev->name);

	schedule_work(&np->reset_task);
}

static void niu_set_txd(struct tx_ring_info *rp, int index,
			u64 mapping, u64 len, u64 mark,
			u64 n_frags)
{
	__le64 *desc = &rp->descr[index];

	*desc = cpu_to_le64(mark |
			    (n_frags << TX_DESC_NUM_PTR_SHIFT) |
			    (len << TX_DESC_TR_LEN_SHIFT) |
			    (mapping & TX_DESC_SAD));
}

static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
				u64 pad_bytes, u64 len)
{
	u16 eth_proto, eth_proto_inner;
	u64 csum_bits, l3off, ihl, ret;
	u8 ip_proto;
	int ipv6;

	eth_proto = be16_to_cpu(ehdr->h_proto);
	eth_proto_inner = eth_proto;
	if (eth_proto == ETH_P_8021Q) {
		struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
		__be16 val = vp->h_vlan_encapsulated_proto;

		eth_proto_inner = be16_to_cpu(val);
	}

	ipv6 = ihl = 0;
	switch (skb->protocol) {
6583
	case cpu_to_be16(ETH_P_IP):
6584 6585 6586
		ip_proto = ip_hdr(skb)->protocol;
		ihl = ip_hdr(skb)->ihl;
		break;
6587
	case cpu_to_be16(ETH_P_IPV6):
6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605
		ip_proto = ipv6_hdr(skb)->nexthdr;
		ihl = (40 >> 2);
		ipv6 = 1;
		break;
	default:
		ip_proto = ihl = 0;
		break;
	}

	csum_bits = TXHDR_CSUM_NONE;
	if (skb->ip_summed == CHECKSUM_PARTIAL) {
		u64 start, stuff;

		csum_bits = (ip_proto == IPPROTO_TCP ?
			     TXHDR_CSUM_TCP :
			     (ip_proto == IPPROTO_UDP ?
			      TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));

6606
		start = skb_checksum_start_offset(skb) -
6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618 6619 6620
			(pad_bytes + sizeof(struct tx_pkt_hdr));
		stuff = start + skb->csum_offset;

		csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
		csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
	}

	l3off = skb_network_offset(skb) -
		(pad_bytes + sizeof(struct tx_pkt_hdr));

	ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
	       (len << TXHDR_LEN_SHIFT) |
	       ((l3off / 2) << TXHDR_L3START_SHIFT) |
	       (ihl << TXHDR_IHL_SHIFT) |
S
Simon Horman 已提交
6621
	       ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) |
6622 6623 6624 6625 6626 6627 6628
	       ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
	       (ipv6 ? TXHDR_IP_VER : 0) |
	       csum_bits);

	return ret;
}

6629 6630
static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
				  struct net_device *dev)
6631 6632 6633
{
	struct niu *np = netdev_priv(dev);
	unsigned long align, headroom;
6634
	struct netdev_queue *txq;
6635 6636 6637 6638 6639 6640 6641
	struct tx_ring_info *rp;
	struct tx_pkt_hdr *tp;
	unsigned int len, nfg;
	struct ethhdr *ehdr;
	int prod, i, tlen;
	u64 mapping, mrk;

6642 6643 6644
	i = skb_get_queue_mapping(skb);
	rp = &np->tx_rings[i];
	txq = netdev_get_tx_queue(dev, i);
6645 6646

	if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6647
		netif_tx_stop_queue(txq);
6648
		dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6649 6650 6651 6652
		rp->tx_errors++;
		return NETDEV_TX_BUSY;
	}

A
Alexander Duyck 已提交
6653 6654
	if (eth_skb_pad(skb))
		goto out;
6655 6656 6657 6658 6659 6660 6661 6662 6663 6664 6665 6666

	len = sizeof(struct tx_pkt_hdr) + 15;
	if (skb_headroom(skb) < len) {
		struct sk_buff *skb_new;

		skb_new = skb_realloc_headroom(skb, len);
		if (!skb_new) {
			rp->tx_errors++;
			goto out_drop;
		}
		kfree_skb(skb);
		skb = skb_new;
6667 6668
	} else
		skb_orphan(skb);
6669 6670 6671 6672 6673 6674 6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717

	align = ((unsigned long) skb->data & (16 - 1));
	headroom = align + sizeof(struct tx_pkt_hdr);

	ehdr = (struct ethhdr *) skb->data;
	tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);

	len = skb->len - sizeof(struct tx_pkt_hdr);
	tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
	tp->resv = 0;

	len = skb_headlen(skb);
	mapping = np->ops->map_single(np->device, skb->data,
				      len, DMA_TO_DEVICE);

	prod = rp->prod;

	rp->tx_buffs[prod].skb = skb;
	rp->tx_buffs[prod].mapping = mapping;

	mrk = TX_DESC_SOP;
	if (++rp->mark_counter == rp->mark_freq) {
		rp->mark_counter = 0;
		mrk |= TX_DESC_MARK;
		rp->mark_pending++;
	}

	tlen = len;
	nfg = skb_shinfo(skb)->nr_frags;
	while (tlen > 0) {
		tlen -= MAX_TX_DESC_LEN;
		nfg++;
	}

	while (len > 0) {
		unsigned int this_len = len;

		if (this_len > MAX_TX_DESC_LEN)
			this_len = MAX_TX_DESC_LEN;

		niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
		mrk = nfg = 0;

		prod = NEXT_TX(rp, prod);
		mapping += this_len;
		len -= this_len;
	}

	for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
E
Eric Dumazet 已提交
6718
		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6719

E
Eric Dumazet 已提交
6720
		len = skb_frag_size(frag);
6721
		mapping = np->ops->map_page(np->device, skb_frag_page(frag),
6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739
					    frag->page_offset, len,
					    DMA_TO_DEVICE);

		rp->tx_buffs[prod].skb = NULL;
		rp->tx_buffs[prod].mapping = mapping;

		niu_set_txd(rp, prod, mapping, len, 0, 0);

		prod = NEXT_TX(rp, prod);
	}

	if (prod < rp->prod)
		rp->wrap_bit ^= TX_RING_KICK_WRAP;
	rp->prod = prod;

	nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));

	if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6740
		netif_tx_stop_queue(txq);
6741
		if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6742
			netif_tx_wake_queue(txq);
6743 6744 6745 6746 6747 6748 6749 6750 6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786 6787 6788 6789 6790 6791 6792 6793 6794 6795 6796 6797
	}

out:
	return NETDEV_TX_OK;

out_drop:
	rp->tx_errors++;
	kfree_skb(skb);
	goto out;
}

static int niu_change_mtu(struct net_device *dev, int new_mtu)
{
	struct niu *np = netdev_priv(dev);
	int err, orig_jumbo, new_jumbo;

	if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
		return -EINVAL;

	orig_jumbo = (dev->mtu > ETH_DATA_LEN);
	new_jumbo = (new_mtu > ETH_DATA_LEN);

	dev->mtu = new_mtu;

	if (!netif_running(dev) ||
	    (orig_jumbo == new_jumbo))
		return 0;

	niu_full_shutdown(np, dev);

	niu_free_channels(np);

	niu_enable_napi(np);

	err = niu_alloc_channels(np);
	if (err)
		return err;

	spin_lock_irq(&np->lock);

	err = niu_init_hw(np);
	if (!err) {
		init_timer(&np->timer);
		np->timer.expires = jiffies + HZ;
		np->timer.data = (unsigned long) np;
		np->timer.function = niu_timer;

		err = niu_enable_interrupts(np, 1);
		if (err)
			niu_stop_hw(np);
	}

	spin_unlock_irq(&np->lock);

	if (!err) {
6798
		netif_tx_start_all_queues(dev);
6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812 6813
		if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
			netif_carrier_on(dev);

		add_timer(&np->timer);
	}

	return err;
}

static void niu_get_drvinfo(struct net_device *dev,
			    struct ethtool_drvinfo *info)
{
	struct niu *np = netdev_priv(dev);
	struct niu_vpd *vpd = &np->vpd;

6814 6815 6816
	strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
	strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
	snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d",
6817 6818
		vpd->fcode_major, vpd->fcode_minor);
	if (np->parent->plat_type != PLAT_TYPE_NIU)
6819 6820
		strlcpy(info->bus_info, pci_name(np->pdev),
			sizeof(info->bus_info));
6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832
}

static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct niu *np = netdev_priv(dev);
	struct niu_link_config *lp;

	lp = &np->link_config;

	memset(cmd, 0, sizeof(*cmd));
	cmd->phy_address = np->phy_addr;
	cmd->supported = lp->supported;
6833 6834
	cmd->advertising = lp->active_advertising;
	cmd->autoneg = lp->active_autoneg;
6835
	ethtool_cmd_speed_set(cmd, lp->active_speed);
6836
	cmd->duplex = lp->active_duplex;
6837 6838 6839
	cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
	cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
		XCVR_EXTERNAL : XCVR_INTERNAL;
6840 6841 6842 6843 6844 6845

	return 0;
}

static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
6846 6847 6848 6849
	struct niu *np = netdev_priv(dev);
	struct niu_link_config *lp = &np->link_config;

	lp->advertising = cmd->advertising;
6850
	lp->speed = ethtool_cmd_speed(cmd);
6851 6852 6853
	lp->duplex = cmd->duplex;
	lp->autoneg = cmd->autoneg;
	return niu_init_link(np);
6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867
}

static u32 niu_get_msglevel(struct net_device *dev)
{
	struct niu *np = netdev_priv(dev);
	return np->msg_enable;
}

static void niu_set_msglevel(struct net_device *dev, u32 value)
{
	struct niu *np = netdev_priv(dev);
	np->msg_enable = value;
}

6868 6869 6870 6871 6872 6873 6874 6875 6876 6877
static int niu_nway_reset(struct net_device *dev)
{
	struct niu *np = netdev_priv(dev);

	if (np->link_config.autoneg)
		return niu_init_link(np);

	return 0;
}

6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928
static int niu_get_eeprom_len(struct net_device *dev)
{
	struct niu *np = netdev_priv(dev);

	return np->eeprom_len;
}

static int niu_get_eeprom(struct net_device *dev,
			  struct ethtool_eeprom *eeprom, u8 *data)
{
	struct niu *np = netdev_priv(dev);
	u32 offset, len, val;

	offset = eeprom->offset;
	len = eeprom->len;

	if (offset + len < offset)
		return -EINVAL;
	if (offset >= np->eeprom_len)
		return -EINVAL;
	if (offset + len > np->eeprom_len)
		len = eeprom->len = np->eeprom_len - offset;

	if (offset & 3) {
		u32 b_offset, b_count;

		b_offset = offset & 3;
		b_count = 4 - b_offset;
		if (b_count > len)
			b_count = len;

		val = nr64(ESPC_NCR((offset - b_offset) / 4));
		memcpy(data, ((char *)&val) + b_offset, b_count);
		data += b_count;
		len -= b_count;
		offset += b_count;
	}
	while (len >= 4) {
		val = nr64(ESPC_NCR(offset / 4));
		memcpy(data, &val, 4);
		data += 4;
		len -= 4;
		offset += 4;
	}
	if (len) {
		val = nr64(ESPC_NCR(offset / 4));
		memcpy(data, &val, len);
	}
	return 0;
}

6929 6930 6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942 6943 6944 6945 6946 6947 6948 6949 6950 6951 6952 6953 6954 6955 6956 6957 6958 6959 6960 6961 6962 6963 6964 6965 6966 6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978 6979 6980 6981 6982 6983 6984 6985 6986 6987 6988 6989 6990 6991
static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
{
	switch (flow_type) {
	case TCP_V4_FLOW:
	case TCP_V6_FLOW:
		*pid = IPPROTO_TCP;
		break;
	case UDP_V4_FLOW:
	case UDP_V6_FLOW:
		*pid = IPPROTO_UDP;
		break;
	case SCTP_V4_FLOW:
	case SCTP_V6_FLOW:
		*pid = IPPROTO_SCTP;
		break;
	case AH_V4_FLOW:
	case AH_V6_FLOW:
		*pid = IPPROTO_AH;
		break;
	case ESP_V4_FLOW:
	case ESP_V6_FLOW:
		*pid = IPPROTO_ESP;
		break;
	default:
		*pid = 0;
		break;
	}
}

static int niu_class_to_ethflow(u64 class, int *flow_type)
{
	switch (class) {
	case CLASS_CODE_TCP_IPV4:
		*flow_type = TCP_V4_FLOW;
		break;
	case CLASS_CODE_UDP_IPV4:
		*flow_type = UDP_V4_FLOW;
		break;
	case CLASS_CODE_AH_ESP_IPV4:
		*flow_type = AH_V4_FLOW;
		break;
	case CLASS_CODE_SCTP_IPV4:
		*flow_type = SCTP_V4_FLOW;
		break;
	case CLASS_CODE_TCP_IPV6:
		*flow_type = TCP_V6_FLOW;
		break;
	case CLASS_CODE_UDP_IPV6:
		*flow_type = UDP_V6_FLOW;
		break;
	case CLASS_CODE_AH_ESP_IPV6:
		*flow_type = AH_V6_FLOW;
		break;
	case CLASS_CODE_SCTP_IPV6:
		*flow_type = SCTP_V6_FLOW;
		break;
	case CLASS_CODE_USER_PROG1:
	case CLASS_CODE_USER_PROG2:
	case CLASS_CODE_USER_PROG3:
	case CLASS_CODE_USER_PROG4:
		*flow_type = IP_USER_FLOW;
		break;
	default:
6992
		return -EINVAL;
6993 6994
	}

6995
	return 0;
6996 6997
}

6998 6999 7000 7001 7002 7003 7004 7005 7006
static int niu_ethflow_to_class(int flow_type, u64 *class)
{
	switch (flow_type) {
	case TCP_V4_FLOW:
		*class = CLASS_CODE_TCP_IPV4;
		break;
	case UDP_V4_FLOW:
		*class = CLASS_CODE_UDP_IPV4;
		break;
7007
	case AH_ESP_V4_FLOW:
7008 7009
	case AH_V4_FLOW:
	case ESP_V4_FLOW:
7010 7011 7012 7013 7014 7015 7016 7017 7018 7019 7020
		*class = CLASS_CODE_AH_ESP_IPV4;
		break;
	case SCTP_V4_FLOW:
		*class = CLASS_CODE_SCTP_IPV4;
		break;
	case TCP_V6_FLOW:
		*class = CLASS_CODE_TCP_IPV6;
		break;
	case UDP_V6_FLOW:
		*class = CLASS_CODE_UDP_IPV6;
		break;
7021
	case AH_ESP_V6_FLOW:
7022 7023
	case AH_V6_FLOW:
	case ESP_V6_FLOW:
7024 7025 7026 7027 7028 7029
		*class = CLASS_CODE_AH_ESP_IPV6;
		break;
	case SCTP_V6_FLOW:
		*class = CLASS_CODE_SCTP_IPV6;
		break;
	default:
7030
		return 0;
7031 7032 7033 7034 7035 7036 7037 7038 7039 7040 7041 7042 7043 7044 7045 7046 7047 7048 7049 7050 7051 7052 7053 7054 7055 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065 7066 7067 7068 7069 7070 7071 7072 7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083
	}

	return 1;
}

static u64 niu_flowkey_to_ethflow(u64 flow_key)
{
	u64 ethflow = 0;

	if (flow_key & FLOW_KEY_L2DA)
		ethflow |= RXH_L2DA;
	if (flow_key & FLOW_KEY_VLAN)
		ethflow |= RXH_VLAN;
	if (flow_key & FLOW_KEY_IPSA)
		ethflow |= RXH_IP_SRC;
	if (flow_key & FLOW_KEY_IPDA)
		ethflow |= RXH_IP_DST;
	if (flow_key & FLOW_KEY_PROTO)
		ethflow |= RXH_L3_PROTO;
	if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
		ethflow |= RXH_L4_B_0_1;
	if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
		ethflow |= RXH_L4_B_2_3;

	return ethflow;

}

static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
{
	u64 key = 0;

	if (ethflow & RXH_L2DA)
		key |= FLOW_KEY_L2DA;
	if (ethflow & RXH_VLAN)
		key |= FLOW_KEY_VLAN;
	if (ethflow & RXH_IP_SRC)
		key |= FLOW_KEY_IPSA;
	if (ethflow & RXH_IP_DST)
		key |= FLOW_KEY_IPDA;
	if (ethflow & RXH_L3_PROTO)
		key |= FLOW_KEY_PROTO;
	if (ethflow & RXH_L4_B_0_1)
		key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
	if (ethflow & RXH_L4_B_2_3)
		key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);

	*flow_key = key;

	return 1;

}

7084
static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7085 7086 7087
{
	u64 class;

7088
	nfc->data = 0;
7089

7090
	if (!niu_ethflow_to_class(nfc->flow_type, &class))
7091 7092 7093 7094
		return -EINVAL;

	if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
	    TCAM_KEY_DISC)
7095
		nfc->data = RXH_DISCARD;
7096
	else
7097
		nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7098 7099 7100 7101
						      CLASS_CODE_USER_PROG1]);
	return 0;
}

7102 7103 7104
static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
					struct ethtool_rx_flow_spec *fsp)
{
7105 7106
	u32 tmp;
	u16 prt;
7107

7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118
	tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
	fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);

	tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
	fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);

	tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
	fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);

	tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
	fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7119 7120 7121 7122 7123 7124 7125 7126 7127 7128

	fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
		TCAM_V4KEY2_TOS_SHIFT;
	fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
		TCAM_V4KEY2_TOS_SHIFT;

	switch (fsp->flow_type) {
	case TCP_V4_FLOW:
	case UDP_V4_FLOW:
	case SCTP_V4_FLOW:
7129 7130 7131 7132 7133 7134 7135
		prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
			TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
		fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);

		prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
			TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
		fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7136

7137 7138 7139 7140 7141 7142 7143
		prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
			TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
		fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);

		prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
			 TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
		fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7144 7145 7146
		break;
	case AH_V4_FLOW:
	case ESP_V4_FLOW:
7147
		tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7148
			TCAM_V4KEY2_PORT_SPI_SHIFT;
7149
		fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7150

7151 7152 7153
		tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
			TCAM_V4KEY2_PORT_SPI_SHIFT;
		fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7154 7155
		break;
	case IP_USER_FLOW:
7156
		tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7157
			TCAM_V4KEY2_PORT_SPI_SHIFT;
7158
		fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7159

7160 7161 7162
		tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
			TCAM_V4KEY2_PORT_SPI_SHIFT;
		fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7163 7164 7165 7166 7167 7168 7169 7170 7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182 7183 7184 7185 7186 7187 7188 7189 7190 7191

		fsp->h_u.usr_ip4_spec.proto =
			(tp->key[2] & TCAM_V4KEY2_PROTO) >>
			TCAM_V4KEY2_PROTO_SHIFT;
		fsp->m_u.usr_ip4_spec.proto =
			(tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
			TCAM_V4KEY2_PROTO_SHIFT;

		fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
		break;
	default:
		break;
	}
}

static int niu_get_ethtool_tcam_entry(struct niu *np,
				      struct ethtool_rxnfc *nfc)
{
	struct niu_parent *parent = np->parent;
	struct niu_tcam_entry *tp;
	struct ethtool_rx_flow_spec *fsp = &nfc->fs;
	u16 idx;
	u64 class;
	int ret = 0;

	idx = tcam_get_index(np, (u16)nfc->fs.location);

	tp = &parent->tcam[idx];
	if (!tp->valid) {
7192 7193
		netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
			    parent->index, (u16)nfc->fs.location, idx);
7194 7195 7196 7197 7198 7199 7200 7201
		return -EINVAL;
	}

	/* fill the flow spec entry */
	class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
		TCAM_V4KEY0_CLASS_CODE_SHIFT;
	ret = niu_class_to_ethflow(class, &fsp->flow_type);
	if (ret < 0) {
7202 7203
		netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
			    parent->index);
7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225 7226 7227 7228 7229 7230 7231 7232 7233 7234 7235 7236 7237 7238 7239 7240 7241 7242 7243 7244 7245 7246 7247 7248 7249 7250 7251 7252 7253 7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264
		goto out;
	}

	if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
		u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
			TCAM_V4KEY2_PROTO_SHIFT;
		if (proto == IPPROTO_ESP) {
			if (fsp->flow_type == AH_V4_FLOW)
				fsp->flow_type = ESP_V4_FLOW;
			else
				fsp->flow_type = ESP_V6_FLOW;
		}
	}

	switch (fsp->flow_type) {
	case TCP_V4_FLOW:
	case UDP_V4_FLOW:
	case SCTP_V4_FLOW:
	case AH_V4_FLOW:
	case ESP_V4_FLOW:
		niu_get_ip4fs_from_tcam_key(tp, fsp);
		break;
	case TCP_V6_FLOW:
	case UDP_V6_FLOW:
	case SCTP_V6_FLOW:
	case AH_V6_FLOW:
	case ESP_V6_FLOW:
		/* Not yet implemented */
		ret = -EINVAL;
		break;
	case IP_USER_FLOW:
		niu_get_ip4fs_from_tcam_key(tp, fsp);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	if (ret < 0)
		goto out;

	if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
		fsp->ring_cookie = RX_CLS_FLOW_DISC;
	else
		fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
			TCAM_ASSOCDATA_OFFSET_SHIFT;

	/* put the tcam size here */
	nfc->data = tcam_get_size(np);
out:
	return ret;
}

static int niu_get_ethtool_tcam_all(struct niu *np,
				    struct ethtool_rxnfc *nfc,
				    u32 *rule_locs)
{
	struct niu_parent *parent = np->parent;
	struct niu_tcam_entry *tp;
	int i, idx, cnt;
	unsigned long flags;
7265
	int ret = 0;
7266 7267 7268 7269 7270 7271 7272 7273 7274 7275

	/* put the tcam size here */
	nfc->data = tcam_get_size(np);

	niu_lock_parent(np, flags);
	for (cnt = 0, i = 0; i < nfc->data; i++) {
		idx = tcam_get_index(np, i);
		tp = &parent->tcam[idx];
		if (!tp->valid)
			continue;
7276 7277 7278 7279
		if (cnt == nfc->rule_cnt) {
			ret = -EMSGSIZE;
			break;
		}
7280 7281 7282 7283 7284
		rule_locs[cnt] = i;
		cnt++;
	}
	niu_unlock_parent(np, flags);

7285 7286
	nfc->rule_cnt = cnt;

7287
	return ret;
7288 7289 7290
}

static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7291
		       u32 *rule_locs)
7292 7293
{
	struct niu *np = netdev_priv(dev);
7294 7295 7296 7297 7298 7299 7300 7301 7302 7303 7304 7305 7306 7307 7308 7309
	int ret = 0;

	switch (cmd->cmd) {
	case ETHTOOL_GRXFH:
		ret = niu_get_hash_opts(np, cmd);
		break;
	case ETHTOOL_GRXRINGS:
		cmd->data = np->num_rx_rings;
		break;
	case ETHTOOL_GRXCLSRLCNT:
		cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
		break;
	case ETHTOOL_GRXCLSRULE:
		ret = niu_get_ethtool_tcam_entry(np, cmd);
		break;
	case ETHTOOL_GRXCLSRLALL:
7310
		ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
7311 7312 7313 7314 7315 7316 7317 7318 7319 7320 7321
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
}

static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
{
7322 7323 7324 7325
	u64 class;
	u64 flow_key = 0;
	unsigned long flags;

7326
	if (!niu_ethflow_to_class(nfc->flow_type, &class))
7327 7328 7329 7330 7331 7332
		return -EINVAL;

	if (class < CLASS_CODE_USER_PROG1 ||
	    class > CLASS_CODE_SCTP_IPV6)
		return -EINVAL;

7333
	if (nfc->data & RXH_DISCARD) {
7334 7335 7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357
		niu_lock_parent(np, flags);
		flow_key = np->parent->tcam_key[class -
					       CLASS_CODE_USER_PROG1];
		flow_key |= TCAM_KEY_DISC;
		nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
		np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
		niu_unlock_parent(np, flags);
		return 0;
	} else {
		/* Discard was set before, but is not set now */
		if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
		    TCAM_KEY_DISC) {
			niu_lock_parent(np, flags);
			flow_key = np->parent->tcam_key[class -
					       CLASS_CODE_USER_PROG1];
			flow_key &= ~TCAM_KEY_DISC;
			nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
			     flow_key);
			np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
				flow_key;
			niu_unlock_parent(np, flags);
		}
	}

7358
	if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7359 7360 7361 7362 7363 7364 7365 7366 7367 7368
		return -EINVAL;

	niu_lock_parent(np, flags);
	nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
	np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
	niu_unlock_parent(np, flags);

	return 0;
}

7369 7370 7371 7372 7373 7374 7375 7376 7377 7378 7379 7380 7381 7382 7383 7384 7385 7386 7387 7388 7389 7390 7391 7392 7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403 7404 7405 7406 7407 7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435 7436 7437 7438 7439 7440 7441 7442 7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454 7455 7456 7457 7458 7459 7460 7461
static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
				       struct niu_tcam_entry *tp,
				       int l2_rdc_tab, u64 class)
{
	u8 pid = 0;
	u32 sip, dip, sipm, dipm, spi, spim;
	u16 sport, dport, spm, dpm;

	sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
	sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
	dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
	dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);

	tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
	tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
	tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
	tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;

	tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
	tp->key[3] |= dip;

	tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
	tp->key_mask[3] |= dipm;

	tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
		       TCAM_V4KEY2_TOS_SHIFT);
	tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
			    TCAM_V4KEY2_TOS_SHIFT);
	switch (fsp->flow_type) {
	case TCP_V4_FLOW:
	case UDP_V4_FLOW:
	case SCTP_V4_FLOW:
		sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
		spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
		dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
		dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);

		tp->key[2] |= (((u64)sport << 16) | dport);
		tp->key_mask[2] |= (((u64)spm << 16) | dpm);
		niu_ethflow_to_l3proto(fsp->flow_type, &pid);
		break;
	case AH_V4_FLOW:
	case ESP_V4_FLOW:
		spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
		spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);

		tp->key[2] |= spi;
		tp->key_mask[2] |= spim;
		niu_ethflow_to_l3proto(fsp->flow_type, &pid);
		break;
	case IP_USER_FLOW:
		spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
		spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);

		tp->key[2] |= spi;
		tp->key_mask[2] |= spim;
		pid = fsp->h_u.usr_ip4_spec.proto;
		break;
	default:
		break;
	}

	tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
	if (pid) {
		tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
	}
}

static int niu_add_ethtool_tcam_entry(struct niu *np,
				      struct ethtool_rxnfc *nfc)
{
	struct niu_parent *parent = np->parent;
	struct niu_tcam_entry *tp;
	struct ethtool_rx_flow_spec *fsp = &nfc->fs;
	struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
	int l2_rdc_table = rdc_table->first_table_num;
	u16 idx;
	u64 class;
	unsigned long flags;
	int err, ret;

	ret = 0;

	idx = nfc->fs.location;
	if (idx >= tcam_get_size(np))
		return -EINVAL;

	if (fsp->flow_type == IP_USER_FLOW) {
		int i;
		int add_usr_cls = 0;
		struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
		struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;

7462 7463 7464
		if (uspec->ip_ver != ETH_RX_NFC_IP4)
			return -EINVAL;

7465 7466 7467 7468 7469 7470 7471 7472 7473 7474 7475 7476 7477 7478 7479 7480 7481 7482 7483 7484 7485 7486 7487 7488 7489 7490 7491 7492
		niu_lock_parent(np, flags);

		for (i = 0; i < NIU_L3_PROG_CLS; i++) {
			if (parent->l3_cls[i]) {
				if (uspec->proto == parent->l3_cls_pid[i]) {
					class = parent->l3_cls[i];
					parent->l3_cls_refcnt[i]++;
					add_usr_cls = 1;
					break;
				}
			} else {
				/* Program new user IP class */
				switch (i) {
				case 0:
					class = CLASS_CODE_USER_PROG1;
					break;
				case 1:
					class = CLASS_CODE_USER_PROG2;
					break;
				case 2:
					class = CLASS_CODE_USER_PROG3;
					break;
				case 3:
					class = CLASS_CODE_USER_PROG4;
					break;
				default:
					break;
				}
7493
				ret = tcam_user_ip_class_set(np, class, 0,
7494 7495 7496 7497 7498 7499 7500 7501 7502 7503 7504 7505 7506 7507 7508 7509 7510
							     uspec->proto,
							     uspec->tos,
							     umask->tos);
				if (ret)
					goto out;

				ret = tcam_user_ip_class_enable(np, class, 1);
				if (ret)
					goto out;
				parent->l3_cls[i] = class;
				parent->l3_cls_pid[i] = uspec->proto;
				parent->l3_cls_refcnt[i]++;
				add_usr_cls = 1;
				break;
			}
		}
		if (!add_usr_cls) {
7511 7512
			netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
				    parent->index, __func__, uspec->proto);
7513 7514 7515 7516 7517 7518 7519 7520 7521 7522 7523 7524 7525 7526 7527 7528 7529 7530 7531 7532 7533 7534 7535 7536 7537 7538 7539 7540 7541 7542 7543 7544
			ret = -EINVAL;
			goto out;
		}
		niu_unlock_parent(np, flags);
	} else {
		if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
			return -EINVAL;
		}
	}

	niu_lock_parent(np, flags);

	idx = tcam_get_index(np, idx);
	tp = &parent->tcam[idx];

	memset(tp, 0, sizeof(*tp));

	/* fill in the tcam key and mask */
	switch (fsp->flow_type) {
	case TCP_V4_FLOW:
	case UDP_V4_FLOW:
	case SCTP_V4_FLOW:
	case AH_V4_FLOW:
	case ESP_V4_FLOW:
		niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
		break;
	case TCP_V6_FLOW:
	case UDP_V6_FLOW:
	case SCTP_V6_FLOW:
	case AH_V6_FLOW:
	case ESP_V6_FLOW:
		/* Not yet implemented */
7545 7546
		netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
			    parent->index, __func__, fsp->flow_type);
7547 7548 7549
		ret = -EINVAL;
		goto out;
	case IP_USER_FLOW:
7550
		niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7551 7552
		break;
	default:
7553 7554
		netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
			    parent->index, __func__, fsp->flow_type);
7555 7556 7557 7558 7559 7560 7561 7562 7563
		ret = -EINVAL;
		goto out;
	}

	/* fill in the assoc data */
	if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
		tp->assoc_data = TCAM_ASSOCDATA_DISC;
	} else {
		if (fsp->ring_cookie >= np->num_rx_rings) {
7564 7565 7566
			netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
				    parent->index, __func__,
				    (long long)fsp->ring_cookie);
7567 7568 7569 7570 7571 7572 7573 7574 7575 7576 7577 7578 7579 7580 7581 7582 7583 7584 7585 7586 7587 7588 7589 7590 7591 7592 7593 7594 7595 7596 7597 7598 7599 7600 7601 7602 7603 7604 7605 7606 7607 7608 7609 7610 7611 7612 7613 7614 7615 7616 7617 7618 7619 7620 7621 7622 7623 7624 7625 7626 7627 7628 7629 7630 7631 7632 7633 7634
			ret = -EINVAL;
			goto out;
		}
		tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
				  (fsp->ring_cookie <<
				   TCAM_ASSOCDATA_OFFSET_SHIFT));
	}

	err = tcam_write(np, idx, tp->key, tp->key_mask);
	if (err) {
		ret = -EINVAL;
		goto out;
	}
	err = tcam_assoc_write(np, idx, tp->assoc_data);
	if (err) {
		ret = -EINVAL;
		goto out;
	}

	/* validate the entry */
	tp->valid = 1;
	np->clas.tcam_valid_entries++;
out:
	niu_unlock_parent(np, flags);

	return ret;
}

static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
{
	struct niu_parent *parent = np->parent;
	struct niu_tcam_entry *tp;
	u16 idx;
	unsigned long flags;
	u64 class;
	int ret = 0;

	if (loc >= tcam_get_size(np))
		return -EINVAL;

	niu_lock_parent(np, flags);

	idx = tcam_get_index(np, loc);
	tp = &parent->tcam[idx];

	/* if the entry is of a user defined class, then update*/
	class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
		TCAM_V4KEY0_CLASS_CODE_SHIFT;

	if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
		int i;
		for (i = 0; i < NIU_L3_PROG_CLS; i++) {
			if (parent->l3_cls[i] == class) {
				parent->l3_cls_refcnt[i]--;
				if (!parent->l3_cls_refcnt[i]) {
					/* disable class */
					ret = tcam_user_ip_class_enable(np,
									class,
									0);
					if (ret)
						goto out;
					parent->l3_cls[i] = 0;
					parent->l3_cls_pid[i] = 0;
				}
				break;
			}
		}
		if (i == NIU_L3_PROG_CLS) {
7635 7636 7637
			netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
				    parent->index, __func__,
				    (unsigned long long)class);
7638 7639 7640 7641 7642 7643 7644 7645 7646 7647 7648 7649 7650 7651 7652 7653 7654 7655 7656 7657 7658 7659 7660 7661 7662 7663 7664 7665 7666 7667 7668 7669 7670 7671 7672 7673 7674 7675 7676 7677 7678
			ret = -EINVAL;
			goto out;
		}
	}

	ret = tcam_flush(np, idx);
	if (ret)
		goto out;

	/* invalidate the entry */
	tp->valid = 0;
	np->clas.tcam_valid_entries--;
out:
	niu_unlock_parent(np, flags);

	return ret;
}

static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
{
	struct niu *np = netdev_priv(dev);
	int ret = 0;

	switch (cmd->cmd) {
	case ETHTOOL_SRXFH:
		ret = niu_set_hash_opts(np, cmd);
		break;
	case ETHTOOL_SRXCLSRLINS:
		ret = niu_add_ethtool_tcam_entry(np, cmd);
		break;
	case ETHTOOL_SRXCLSRLDEL:
		ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
}

7679 7680 7681 7682 7683 7684 7685 7686 7687 7688 7689 7690 7691 7692 7693 7694 7695 7696 7697 7698 7699 7700 7701 7702 7703 7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716 7717 7718 7719 7720 7721 7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752 7753 7754 7755 7756 7757 7758 7759 7760 7761 7762 7763 7764 7765 7766 7767 7768 7769 7770 7771 7772 7773 7774 7775 7776 7777 7778 7779 7780 7781 7782 7783 7784 7785
static const struct {
	const char string[ETH_GSTRING_LEN];
} niu_xmac_stat_keys[] = {
	{ "tx_frames" },
	{ "tx_bytes" },
	{ "tx_fifo_errors" },
	{ "tx_overflow_errors" },
	{ "tx_max_pkt_size_errors" },
	{ "tx_underflow_errors" },
	{ "rx_local_faults" },
	{ "rx_remote_faults" },
	{ "rx_link_faults" },
	{ "rx_align_errors" },
	{ "rx_frags" },
	{ "rx_mcasts" },
	{ "rx_bcasts" },
	{ "rx_hist_cnt1" },
	{ "rx_hist_cnt2" },
	{ "rx_hist_cnt3" },
	{ "rx_hist_cnt4" },
	{ "rx_hist_cnt5" },
	{ "rx_hist_cnt6" },
	{ "rx_hist_cnt7" },
	{ "rx_octets" },
	{ "rx_code_violations" },
	{ "rx_len_errors" },
	{ "rx_crc_errors" },
	{ "rx_underflows" },
	{ "rx_overflows" },
	{ "pause_off_state" },
	{ "pause_on_state" },
	{ "pause_received" },
};

#define NUM_XMAC_STAT_KEYS	ARRAY_SIZE(niu_xmac_stat_keys)

static const struct {
	const char string[ETH_GSTRING_LEN];
} niu_bmac_stat_keys[] = {
	{ "tx_underflow_errors" },
	{ "tx_max_pkt_size_errors" },
	{ "tx_bytes" },
	{ "tx_frames" },
	{ "rx_overflows" },
	{ "rx_frames" },
	{ "rx_align_errors" },
	{ "rx_crc_errors" },
	{ "rx_len_errors" },
	{ "pause_off_state" },
	{ "pause_on_state" },
	{ "pause_received" },
};

#define NUM_BMAC_STAT_KEYS	ARRAY_SIZE(niu_bmac_stat_keys)

static const struct {
	const char string[ETH_GSTRING_LEN];
} niu_rxchan_stat_keys[] = {
	{ "rx_channel" },
	{ "rx_packets" },
	{ "rx_bytes" },
	{ "rx_dropped" },
	{ "rx_errors" },
};

#define NUM_RXCHAN_STAT_KEYS	ARRAY_SIZE(niu_rxchan_stat_keys)

static const struct {
	const char string[ETH_GSTRING_LEN];
} niu_txchan_stat_keys[] = {
	{ "tx_channel" },
	{ "tx_packets" },
	{ "tx_bytes" },
	{ "tx_errors" },
};

#define NUM_TXCHAN_STAT_KEYS	ARRAY_SIZE(niu_txchan_stat_keys)

static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
	struct niu *np = netdev_priv(dev);
	int i;

	if (stringset != ETH_SS_STATS)
		return;

	if (np->flags & NIU_FLAGS_XMAC) {
		memcpy(data, niu_xmac_stat_keys,
		       sizeof(niu_xmac_stat_keys));
		data += sizeof(niu_xmac_stat_keys);
	} else {
		memcpy(data, niu_bmac_stat_keys,
		       sizeof(niu_bmac_stat_keys));
		data += sizeof(niu_bmac_stat_keys);
	}
	for (i = 0; i < np->num_rx_rings; i++) {
		memcpy(data, niu_rxchan_stat_keys,
		       sizeof(niu_rxchan_stat_keys));
		data += sizeof(niu_rxchan_stat_keys);
	}
	for (i = 0; i < np->num_tx_rings; i++) {
		memcpy(data, niu_txchan_stat_keys,
		       sizeof(niu_txchan_stat_keys));
		data += sizeof(niu_txchan_stat_keys);
	}
}

7786
static int niu_get_sset_count(struct net_device *dev, int stringset)
7787 7788 7789
{
	struct niu *np = netdev_priv(dev);

7790 7791 7792
	if (stringset != ETH_SS_STATS)
		return -EINVAL;

7793
	return (np->flags & NIU_FLAGS_XMAC ?
7794 7795 7796
		 NUM_XMAC_STAT_KEYS :
		 NUM_BMAC_STAT_KEYS) +
		(np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7797
		(np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7798 7799 7800 7801 7802 7803 7804 7805 7806 7807 7808 7809 7810 7811 7812 7813 7814 7815 7816 7817 7818
}

static void niu_get_ethtool_stats(struct net_device *dev,
				  struct ethtool_stats *stats, u64 *data)
{
	struct niu *np = netdev_priv(dev);
	int i;

	niu_sync_mac_stats(np);
	if (np->flags & NIU_FLAGS_XMAC) {
		memcpy(data, &np->mac_stats.xmac,
		       sizeof(struct niu_xmac_stats));
		data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
	} else {
		memcpy(data, &np->mac_stats.bmac,
		       sizeof(struct niu_bmac_stats));
		data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
	}
	for (i = 0; i < np->num_rx_rings; i++) {
		struct rx_ring_info *rp = &np->rx_rings[i];

7819 7820
		niu_sync_rx_discard_stats(np, rp, 0);

7821 7822 7823 7824 7825 7826 7827 7828 7829 7830 7831 7832 7833 7834 7835 7836 7837 7838 7839 7840 7841 7842 7843 7844 7845 7846 7847 7848 7849 7850 7851 7852 7853 7854 7855 7856 7857 7858 7859 7860 7861 7862 7863 7864 7865 7866 7867 7868 7869 7870 7871 7872 7873 7874
		data[0] = rp->rx_channel;
		data[1] = rp->rx_packets;
		data[2] = rp->rx_bytes;
		data[3] = rp->rx_dropped;
		data[4] = rp->rx_errors;
		data += 5;
	}
	for (i = 0; i < np->num_tx_rings; i++) {
		struct tx_ring_info *rp = &np->tx_rings[i];

		data[0] = rp->tx_channel;
		data[1] = rp->tx_packets;
		data[2] = rp->tx_bytes;
		data[3] = rp->tx_errors;
		data += 4;
	}
}

static u64 niu_led_state_save(struct niu *np)
{
	if (np->flags & NIU_FLAGS_XMAC)
		return nr64_mac(XMAC_CONFIG);
	else
		return nr64_mac(BMAC_XIF_CONFIG);
}

static void niu_led_state_restore(struct niu *np, u64 val)
{
	if (np->flags & NIU_FLAGS_XMAC)
		nw64_mac(XMAC_CONFIG, val);
	else
		nw64_mac(BMAC_XIF_CONFIG, val);
}

static void niu_force_led(struct niu *np, int on)
{
	u64 val, reg, bit;

	if (np->flags & NIU_FLAGS_XMAC) {
		reg = XMAC_CONFIG;
		bit = XMAC_CONFIG_FORCE_LED_ON;
	} else {
		reg = BMAC_XIF_CONFIG;
		bit = BMAC_XIF_CONFIG_LINK_LED;
	}

	val = nr64_mac(reg);
	if (on)
		val |= bit;
	else
		val &= ~bit;
	nw64_mac(reg, val);
}

7875 7876 7877
static int niu_set_phys_id(struct net_device *dev,
			   enum ethtool_phys_id_state state)

7878 7879 7880 7881 7882 7883
{
	struct niu *np = netdev_priv(dev);

	if (!netif_running(dev))
		return -EAGAIN;

7884 7885 7886
	switch (state) {
	case ETHTOOL_ID_ACTIVE:
		np->orig_led_state = niu_led_state_save(np);
7887
		return 1;	/* cycle on/off once per second */
7888

7889 7890 7891
	case ETHTOOL_ID_ON:
		niu_force_led(np, 1);
		break;
7892

7893 7894 7895
	case ETHTOOL_ID_OFF:
		niu_force_led(np, 0);
		break;
7896

7897 7898
	case ETHTOOL_ID_INACTIVE:
		niu_led_state_restore(np, np->orig_led_state);
7899 7900 7901 7902 7903 7904 7905 7906 7907 7908
	}

	return 0;
}

static const struct ethtool_ops niu_ethtool_ops = {
	.get_drvinfo		= niu_get_drvinfo,
	.get_link		= ethtool_op_get_link,
	.get_msglevel		= niu_get_msglevel,
	.set_msglevel		= niu_set_msglevel,
7909
	.nway_reset		= niu_nway_reset,
7910 7911 7912 7913 7914
	.get_eeprom_len		= niu_get_eeprom_len,
	.get_eeprom		= niu_get_eeprom,
	.get_settings		= niu_get_settings,
	.set_settings		= niu_set_settings,
	.get_strings		= niu_get_strings,
7915
	.get_sset_count		= niu_get_sset_count,
7916
	.get_ethtool_stats	= niu_get_ethtool_stats,
7917
	.set_phys_id		= niu_set_phys_id,
7918 7919
	.get_rxnfc		= niu_get_nfc,
	.set_rxnfc		= niu_set_nfc,
7920 7921 7922 7923 7924 7925 7926 7927 7928 7929 7930 7931 7932 7933 7934 7935 7936 7937 7938
};

static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
			      int ldg, int ldn)
{
	if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
		return -EINVAL;
	if (ldn < 0 || ldn > LDN_MAX)
		return -EINVAL;

	parent->ldg_map[ldn] = ldg;

	if (np->parent->plat_type == PLAT_TYPE_NIU) {
		/* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
		 * the firmware, and we're not supposed to change them.
		 * Validate the mapping, because if it's wrong we probably
		 * won't get any interrupts and that's painful to debug.
		 */
		if (nr64(LDG_NUM(ldn)) != ldg) {
7939
			dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958 7959 7960 7961 7962 7963 7964 7965 7966 7967 7968 7969 7970 7971 7972
				np->port, ldn, ldg,
				(unsigned long long) nr64(LDG_NUM(ldn)));
			return -EINVAL;
		}
	} else
		nw64(LDG_NUM(ldn), ldg);

	return 0;
}

static int niu_set_ldg_timer_res(struct niu *np, int res)
{
	if (res < 0 || res > LDG_TIMER_RES_VAL)
		return -EINVAL;


	nw64(LDG_TIMER_RES, res);

	return 0;
}

static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
{
	if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
	    (func < 0 || func > 3) ||
	    (vector < 0 || vector > 0x1f))
		return -EINVAL;

	nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);

	return 0;
}

B
Bill Pemberton 已提交
7973
static int niu_pci_eeprom_read(struct niu *np, u32 addr)
7974 7975 7976 7977 7978 7979 7980 7981 7982 7983 7984 7985 7986 7987 7988 7989 7990 7991
{
	u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
				 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
	int limit;

	if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
		return -EINVAL;

	frame = frame_base;
	nw64(ESPC_PIO_STAT, frame);
	limit = 64;
	do {
		udelay(5);
		frame = nr64(ESPC_PIO_STAT);
		if (frame & ESPC_PIO_STAT_READ_END)
			break;
	} while (limit--);
	if (!(frame & ESPC_PIO_STAT_READ_END)) {
7992
		dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7993 7994 7995 7996 7997 7998 7999 8000 8001 8002 8003 8004 8005 8006
			(unsigned long long) frame);
		return -ENODEV;
	}

	frame = frame_base;
	nw64(ESPC_PIO_STAT, frame);
	limit = 64;
	do {
		udelay(5);
		frame = nr64(ESPC_PIO_STAT);
		if (frame & ESPC_PIO_STAT_READ_END)
			break;
	} while (limit--);
	if (!(frame & ESPC_PIO_STAT_READ_END)) {
8007
		dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8008 8009 8010 8011 8012 8013 8014 8015
			(unsigned long long) frame);
		return -ENODEV;
	}

	frame = nr64(ESPC_PIO_STAT);
	return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
}

B
Bill Pemberton 已提交
8016
static int niu_pci_eeprom_read16(struct niu *np, u32 off)
8017 8018 8019 8020 8021 8022 8023 8024 8025 8026 8027 8028 8029 8030 8031
{
	int err = niu_pci_eeprom_read(np, off);
	u16 val;

	if (err < 0)
		return err;
	val = (err << 8);
	err = niu_pci_eeprom_read(np, off + 1);
	if (err < 0)
		return err;
	val |= (err & 0xff);

	return val;
}

B
Bill Pemberton 已提交
8032
static int niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8033 8034 8035 8036 8037 8038 8039 8040 8041 8042 8043 8044 8045 8046 8047 8048 8049
{
	int err = niu_pci_eeprom_read(np, off);
	u16 val;

	if (err < 0)
		return err;

	val = (err & 0xff);
	err = niu_pci_eeprom_read(np, off + 1);
	if (err < 0)
		return err;

	val |= (err & 0xff) << 8;

	return val;
}

8050 8051
static int niu_pci_vpd_get_propname(struct niu *np, u32 off, char *namebuf,
				    int namebuf_len)
8052 8053 8054 8055 8056 8057 8058 8059 8060 8061 8062 8063 8064 8065 8066 8067 8068
{
	int i;

	for (i = 0; i < namebuf_len; i++) {
		int err = niu_pci_eeprom_read(np, off + i);
		if (err < 0)
			return err;
		*namebuf++ = err;
		if (!err)
			break;
	}
	if (i >= namebuf_len)
		return -EINVAL;

	return i + 1;
}

B
Bill Pemberton 已提交
8069
static void niu_vpd_parse_version(struct niu *np)
8070 8071 8072 8073 8074 8075 8076
{
	struct niu_vpd *vpd = &np->vpd;
	int len = strlen(vpd->version) + 1;
	const char *s = vpd->version;
	int i;

	for (i = 0; i < len - 5; i++) {
J
Joe Perches 已提交
8077
		if (!strncmp(s + i, "FCode ", 6))
8078 8079 8080 8081 8082 8083 8084 8085
			break;
	}
	if (i >= len - 5)
		return;

	s += i + 5;
	sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);

8086 8087 8088
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "VPD_SCAN: FCODE major(%d) minor(%d)\n",
		     vpd->fcode_major, vpd->fcode_minor);
8089 8090 8091 8092 8093 8094 8095
	if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
	    (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
	     vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
		np->flags |= NIU_FLAGS_VPD_VALID;
}

/* ESPC_PIO_EN_ENABLE must be set */
8096
static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
8097 8098 8099 8100 8101 8102 8103 8104 8105 8106
{
	unsigned int found_mask = 0;
#define FOUND_MASK_MODEL	0x00000001
#define FOUND_MASK_BMODEL	0x00000002
#define FOUND_MASK_VERS		0x00000004
#define FOUND_MASK_MAC		0x00000008
#define FOUND_MASK_NMAC		0x00000010
#define FOUND_MASK_PHY		0x00000020
#define FOUND_MASK_ALL		0x0000003f

8107 8108
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "VPD_SCAN: start[%x] end[%x]\n", start, end);
8109
	while (start < end) {
8110
		int len, err, prop_len;
8111 8112 8113 8114 8115 8116 8117 8118 8119 8120 8121 8122 8123 8124 8125 8126 8127 8128 8129 8130 8131 8132 8133 8134 8135 8136 8137 8138 8139 8140 8141 8142 8143 8144 8145 8146 8147 8148 8149 8150 8151 8152 8153 8154 8155 8156 8157 8158 8159
		char namebuf[64];
		u8 *prop_buf;
		int max_len;

		if (found_mask == FOUND_MASK_ALL) {
			niu_vpd_parse_version(np);
			return 1;
		}

		err = niu_pci_eeprom_read(np, start + 2);
		if (err < 0)
			return err;
		len = err;
		start += 3;

		prop_len = niu_pci_eeprom_read(np, start + 4);
		err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
		if (err < 0)
			return err;

		prop_buf = NULL;
		max_len = 0;
		if (!strcmp(namebuf, "model")) {
			prop_buf = np->vpd.model;
			max_len = NIU_VPD_MODEL_MAX;
			found_mask |= FOUND_MASK_MODEL;
		} else if (!strcmp(namebuf, "board-model")) {
			prop_buf = np->vpd.board_model;
			max_len = NIU_VPD_BD_MODEL_MAX;
			found_mask |= FOUND_MASK_BMODEL;
		} else if (!strcmp(namebuf, "version")) {
			prop_buf = np->vpd.version;
			max_len = NIU_VPD_VERSION_MAX;
			found_mask |= FOUND_MASK_VERS;
		} else if (!strcmp(namebuf, "local-mac-address")) {
			prop_buf = np->vpd.local_mac;
			max_len = ETH_ALEN;
			found_mask |= FOUND_MASK_MAC;
		} else if (!strcmp(namebuf, "num-mac-addresses")) {
			prop_buf = &np->vpd.mac_num;
			max_len = 1;
			found_mask |= FOUND_MASK_NMAC;
		} else if (!strcmp(namebuf, "phy-type")) {
			prop_buf = np->vpd.phy_type;
			max_len = NIU_VPD_PHY_TYPE_MAX;
			found_mask |= FOUND_MASK_PHY;
		}

		if (max_len && prop_len > max_len) {
8160
			dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8161 8162 8163 8164 8165 8166 8167
			return -EINVAL;
		}

		if (prop_buf) {
			u32 off = start + 5 + err;
			int i;

8168 8169 8170
			netif_printk(np, probe, KERN_DEBUG, np->dev,
				     "VPD_SCAN: Reading in property [%s] len[%d]\n",
				     namebuf, prop_len);
8171 8172 8173 8174 8175 8176 8177 8178 8179 8180 8181
			for (i = 0; i < prop_len; i++)
				*prop_buf++ = niu_pci_eeprom_read(np, off + i);
		}

		start += len;
	}

	return 0;
}

/* ESPC_PIO_EN_ENABLE must be set */
B
Bill Pemberton 已提交
8182
static void niu_pci_vpd_fetch(struct niu *np, u32 start)
8183 8184 8185 8186 8187 8188 8189 8190 8191 8192 8193 8194 8195 8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214 8215 8216
{
	u32 offset;
	int err;

	err = niu_pci_eeprom_read16_swp(np, start + 1);
	if (err < 0)
		return;

	offset = err + 3;

	while (start + offset < ESPC_EEPROM_SIZE) {
		u32 here = start + offset;
		u32 end;

		err = niu_pci_eeprom_read(np, here);
		if (err != 0x90)
			return;

		err = niu_pci_eeprom_read16_swp(np, here + 1);
		if (err < 0)
			return;

		here = start + offset + 3;
		end = start + offset + err;

		offset += err;

		err = niu_pci_vpd_scan_props(np, here, end);
		if (err < 0 || err == 1)
			return;
	}
}

/* ESPC_PIO_EN_ENABLE must be set */
B
Bill Pemberton 已提交
8217
static u32 niu_pci_vpd_offset(struct niu *np)
8218 8219 8220 8221 8222 8223 8224 8225 8226 8227 8228 8229 8230 8231 8232 8233 8234 8235 8236 8237 8238 8239 8240 8241 8242 8243 8244 8245 8246 8247 8248 8249 8250 8251 8252 8253 8254 8255 8256 8257 8258 8259 8260 8261 8262 8263 8264 8265 8266 8267 8268 8269 8270 8271
{
	u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
	int err;

	while (start < end) {
		ret = start;

		/* ROM header signature?  */
		err = niu_pci_eeprom_read16(np, start +  0);
		if (err != 0x55aa)
			return 0;

		/* Apply offset to PCI data structure.  */
		err = niu_pci_eeprom_read16(np, start + 23);
		if (err < 0)
			return 0;
		start += err;

		/* Check for "PCIR" signature.  */
		err = niu_pci_eeprom_read16(np, start +  0);
		if (err != 0x5043)
			return 0;
		err = niu_pci_eeprom_read16(np, start +  2);
		if (err != 0x4952)
			return 0;

		/* Check for OBP image type.  */
		err = niu_pci_eeprom_read(np, start + 20);
		if (err < 0)
			return 0;
		if (err != 0x01) {
			err = niu_pci_eeprom_read(np, ret + 2);
			if (err < 0)
				return 0;

			start = ret + (err * 512);
			continue;
		}

		err = niu_pci_eeprom_read16_swp(np, start + 8);
		if (err < 0)
			return err;
		ret += err;

		err = niu_pci_eeprom_read(np, ret + 0);
		if (err != 0x82)
			return 0;

		return ret;
	}

	return 0;
}

8272
static int niu_phy_type_prop_decode(struct niu *np, const char *phy_prop)
8273 8274 8275 8276 8277 8278 8279 8280 8281 8282 8283 8284 8285 8286 8287 8288 8289 8290 8291 8292 8293
{
	if (!strcmp(phy_prop, "mif")) {
		/* 1G copper, MII */
		np->flags &= ~(NIU_FLAGS_FIBER |
			       NIU_FLAGS_10G);
		np->mac_xcvr = MAC_XCVR_MII;
	} else if (!strcmp(phy_prop, "xgf")) {
		/* 10G fiber, XPCS */
		np->flags |= (NIU_FLAGS_10G |
			      NIU_FLAGS_FIBER);
		np->mac_xcvr = MAC_XCVR_XPCS;
	} else if (!strcmp(phy_prop, "pcs")) {
		/* 1G fiber, PCS */
		np->flags &= ~NIU_FLAGS_10G;
		np->flags |= NIU_FLAGS_FIBER;
		np->mac_xcvr = MAC_XCVR_PCS;
	} else if (!strcmp(phy_prop, "xgc")) {
		/* 10G copper, XPCS */
		np->flags |= NIU_FLAGS_10G;
		np->flags &= ~NIU_FLAGS_FIBER;
		np->mac_xcvr = MAC_XCVR_XPCS;
8294 8295 8296 8297 8298 8299
	} else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
		/* 10G Serdes or 1G Serdes, default to 10G */
		np->flags |= NIU_FLAGS_10G;
		np->flags &= ~NIU_FLAGS_FIBER;
		np->flags |= NIU_FLAGS_XCVR_SERDES;
		np->mac_xcvr = MAC_XCVR_XPCS;
8300 8301 8302 8303 8304 8305
	} else {
		return -EINVAL;
	}
	return 0;
}

8306 8307 8308 8309
static int niu_pci_vpd_get_nports(struct niu *np)
{
	int ports = 0;

8310 8311 8312 8313 8314
	if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
	    (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
	    (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
	    (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
	    (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8315
		ports = 4;
8316 8317 8318 8319
	} else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
		   (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
		   (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
		   (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8320 8321 8322 8323 8324 8325
		ports = 2;
	}

	return ports;
}

B
Bill Pemberton 已提交
8326
static void niu_pci_vpd_validate(struct niu *np)
8327 8328 8329 8330 8331 8332
{
	struct net_device *dev = np->dev;
	struct niu_vpd *vpd = &np->vpd;
	u8 val8;

	if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8333
		dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8334 8335 8336 8337 8338

		np->flags &= ~NIU_FLAGS_VPD_VALID;
		return;
	}

8339 8340
	if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
	    !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8341 8342 8343 8344 8345 8346 8347 8348 8349
		np->flags |= NIU_FLAGS_10G;
		np->flags &= ~NIU_FLAGS_FIBER;
		np->flags |= NIU_FLAGS_XCVR_SERDES;
		np->mac_xcvr = MAC_XCVR_PCS;
		if (np->port > 1) {
			np->flags |= NIU_FLAGS_FIBER;
			np->flags &= ~NIU_FLAGS_10G;
		}
		if (np->flags & NIU_FLAGS_10G)
8350
			np->mac_xcvr = MAC_XCVR_XPCS;
8351
	} else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8352 8353
		np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
			      NIU_FLAGS_HOTPLUG_PHY);
8354
	} else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8355
		dev_err(np->device, "Illegal phy string [%s]\n",
8356
			np->vpd.phy_type);
8357
		dev_err(np->device, "Falling back to SPROM\n");
8358 8359 8360 8361
		np->flags &= ~NIU_FLAGS_VPD_VALID;
		return;
	}

8362
	memcpy(dev->dev_addr, vpd->local_mac, ETH_ALEN);
8363

8364 8365 8366 8367
	val8 = dev->dev_addr[5];
	dev->dev_addr[5] += np->port;
	if (dev->dev_addr[5] < val8)
		dev->dev_addr[4]++;
8368 8369
}

B
Bill Pemberton 已提交
8370
static int niu_pci_probe_sprom(struct niu *np)
8371 8372 8373 8374 8375 8376 8377 8378 8379 8380 8381 8382
{
	struct net_device *dev = np->dev;
	int len, i;
	u64 val, sum;
	u8 val8;

	val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
	val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
	len = val / 4;

	np->eeprom_len = len;

8383 8384
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "SPROM: Image size %llu\n", (unsigned long long)val);
8385 8386 8387 8388 8389 8390 8391 8392 8393

	sum = 0;
	for (i = 0; i < len; i++) {
		val = nr64(ESPC_NCR(i));
		sum += (val >>  0) & 0xff;
		sum += (val >>  8) & 0xff;
		sum += (val >> 16) & 0xff;
		sum += (val >> 24) & 0xff;
	}
8394 8395
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "SPROM: Checksum %x\n", (int)(sum & 0xff));
8396
	if ((sum & 0xff) != 0xab) {
8397
		dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8398 8399 8400 8401 8402 8403
		return -EINVAL;
	}

	val = nr64(ESPC_PHY_TYPE);
	switch (np->port) {
	case 0:
A
Al Viro 已提交
8404
		val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8405 8406 8407
			ESPC_PHY_TYPE_PORT0_SHIFT;
		break;
	case 1:
A
Al Viro 已提交
8408
		val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8409 8410 8411
			ESPC_PHY_TYPE_PORT1_SHIFT;
		break;
	case 2:
A
Al Viro 已提交
8412
		val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8413 8414 8415
			ESPC_PHY_TYPE_PORT2_SHIFT;
		break;
	case 3:
A
Al Viro 已提交
8416
		val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8417 8418 8419
			ESPC_PHY_TYPE_PORT3_SHIFT;
		break;
	default:
8420
		dev_err(np->device, "Bogus port number %u\n",
8421 8422 8423
			np->port);
		return -EINVAL;
	}
8424 8425
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "SPROM: PHY type %x\n", val8);
8426

A
Al Viro 已提交
8427
	switch (val8) {
8428 8429 8430 8431 8432 8433 8434 8435 8436 8437 8438 8439 8440 8441 8442 8443 8444 8445 8446 8447 8448 8449 8450 8451 8452 8453 8454 8455 8456
	case ESPC_PHY_TYPE_1G_COPPER:
		/* 1G copper, MII */
		np->flags &= ~(NIU_FLAGS_FIBER |
			       NIU_FLAGS_10G);
		np->mac_xcvr = MAC_XCVR_MII;
		break;

	case ESPC_PHY_TYPE_1G_FIBER:
		/* 1G fiber, PCS */
		np->flags &= ~NIU_FLAGS_10G;
		np->flags |= NIU_FLAGS_FIBER;
		np->mac_xcvr = MAC_XCVR_PCS;
		break;

	case ESPC_PHY_TYPE_10G_COPPER:
		/* 10G copper, XPCS */
		np->flags |= NIU_FLAGS_10G;
		np->flags &= ~NIU_FLAGS_FIBER;
		np->mac_xcvr = MAC_XCVR_XPCS;
		break;

	case ESPC_PHY_TYPE_10G_FIBER:
		/* 10G fiber, XPCS */
		np->flags |= (NIU_FLAGS_10G |
			      NIU_FLAGS_FIBER);
		np->mac_xcvr = MAC_XCVR_XPCS;
		break;

	default:
8457
		dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8458 8459 8460 8461
		return -EINVAL;
	}

	val = nr64(ESPC_MAC_ADDR0);
8462 8463
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8464 8465 8466 8467
	dev->dev_addr[0] = (val >>  0) & 0xff;
	dev->dev_addr[1] = (val >>  8) & 0xff;
	dev->dev_addr[2] = (val >> 16) & 0xff;
	dev->dev_addr[3] = (val >> 24) & 0xff;
8468 8469

	val = nr64(ESPC_MAC_ADDR1);
8470 8471
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8472 8473
	dev->dev_addr[4] = (val >>  0) & 0xff;
	dev->dev_addr[5] = (val >>  8) & 0xff;
8474

8475
	if (!is_valid_ether_addr(&dev->dev_addr[0])) {
8476
		dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8477
			dev->dev_addr);
8478 8479 8480
		return -EINVAL;
	}

8481 8482 8483 8484
	val8 = dev->dev_addr[5];
	dev->dev_addr[5] += np->port;
	if (dev->dev_addr[5] < val8)
		dev->dev_addr[4]++;
8485 8486

	val = nr64(ESPC_MOD_STR_LEN);
8487 8488
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8489
	if (val >= 8 * 4)
8490 8491 8492 8493 8494 8495 8496 8497 8498 8499 8500 8501 8502
		return -EINVAL;

	for (i = 0; i < val; i += 4) {
		u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));

		np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
		np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
		np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
		np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
	}
	np->vpd.model[val] = '\0';

	val = nr64(ESPC_BD_MOD_STR_LEN);
8503 8504
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8505
	if (val >= 4 * 4)
8506 8507 8508 8509 8510 8511 8512 8513 8514 8515 8516 8517 8518 8519
		return -EINVAL;

	for (i = 0; i < val; i += 4) {
		u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));

		np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
		np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
		np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
		np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
	}
	np->vpd.board_model[val] = '\0';

	np->vpd.mac_num =
		nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8520 8521
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8522 8523 8524 8525

	return 0;
}

B
Bill Pemberton 已提交
8526
static int niu_get_and_validate_port(struct niu *np)
8527 8528 8529 8530 8531 8532 8533 8534 8535 8536
{
	struct niu_parent *parent = np->parent;

	if (np->port <= 1)
		np->flags |= NIU_FLAGS_XMAC;

	if (!parent->num_ports) {
		if (parent->plat_type == PLAT_TYPE_NIU) {
			parent->num_ports = 2;
		} else {
8537 8538 8539 8540 8541 8542 8543 8544
			parent->num_ports = niu_pci_vpd_get_nports(np);
			if (!parent->num_ports) {
				/* Fall back to SPROM as last resort.
				 * This will fail on most cards.
				 */
				parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
					ESPC_NUM_PORTS_MACS_VAL;

8545 8546 8547
				/* All of the current probing methods fail on
				 * Maramba on-board parts.
				 */
8548
				if (!parent->num_ports)
8549
					parent->num_ports = 4;
8550
			}
8551 8552 8553 8554 8555 8556 8557 8558 8559
		}
	}

	if (np->port >= parent->num_ports)
		return -ENODEV;

	return 0;
}

8560 8561
static int phy_record(struct niu_parent *parent, struct phy_probe_info *p,
		      int dev_id_1, int dev_id_2, u8 phy_port, int type)
8562 8563 8564 8565 8566 8567 8568
{
	u32 id = (dev_id_1 << 16) | dev_id_2;
	u8 idx;

	if (dev_id_1 < 0 || dev_id_2 < 0)
		return 0;
	if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
D
David S. Miller 已提交
8569
		/* Because of the NIU_PHY_ID_MASK being applied, the 8704
8570 8571
		 * test covers the 8706 as well.
		 */
M
Mirko Lindner 已提交
8572
		if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8573
		    ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
8574 8575 8576 8577 8578 8579 8580 8581
			return 0;
	} else {
		if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
			return 0;
	}

	pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
		parent->index, id,
8582 8583
		type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
		type == PHY_TYPE_PCS ? "PCS" : "MII",
8584 8585 8586
		phy_port);

	if (p->cur[type] >= NIU_MAX_PORTS) {
8587
		pr_err("Too many PHY ports\n");
8588 8589 8590 8591 8592 8593 8594 8595 8596
		return -EINVAL;
	}
	idx = p->cur[type];
	p->phy_id[type][idx] = id;
	p->phy_port[type][idx] = phy_port;
	p->cur[type] = idx + 1;
	return 0;
}

B
Bill Pemberton 已提交
8597
static int port_has_10g(struct phy_probe_info *p, int port)
8598 8599 8600 8601 8602 8603 8604 8605 8606 8607 8608 8609 8610 8611 8612
{
	int i;

	for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
		if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
			return 1;
	}
	for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
		if (p->phy_port[PHY_TYPE_PCS][i] == port)
			return 1;
	}

	return 0;
}

B
Bill Pemberton 已提交
8613
static int count_10g_ports(struct phy_probe_info *p, int *lowest)
8614 8615 8616 8617 8618 8619 8620 8621 8622 8623 8624 8625 8626 8627 8628 8629
{
	int port, cnt;

	cnt = 0;
	*lowest = 32;
	for (port = 8; port < 32; port++) {
		if (port_has_10g(p, port)) {
			if (!cnt)
				*lowest = port;
			cnt++;
		}
	}

	return cnt;
}

B
Bill Pemberton 已提交
8630
static int count_1g_ports(struct phy_probe_info *p, int *lowest)
8631 8632 8633 8634 8635 8636 8637 8638
{
	*lowest = 32;
	if (p->cur[PHY_TYPE_MII])
		*lowest = p->phy_port[PHY_TYPE_MII][0];

	return p->cur[PHY_TYPE_MII];
}

B
Bill Pemberton 已提交
8639
static void niu_n2_divide_channels(struct niu_parent *parent)
8640 8641 8642 8643 8644 8645 8646 8647
{
	int num_ports = parent->num_ports;
	int i;

	for (i = 0; i < num_ports; i++) {
		parent->rxchan_per_port[i] = (16 / num_ports);
		parent->txchan_per_port[i] = (16 / num_ports);

8648
		pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8649 8650 8651 8652 8653 8654
			parent->index, i,
			parent->rxchan_per_port[i],
			parent->txchan_per_port[i]);
	}
}

B
Bill Pemberton 已提交
8655
static void niu_divide_channels(struct niu_parent *parent,
8656
				int num_10g, int num_1g)
8657 8658 8659 8660 8661 8662 8663 8664 8665 8666 8667 8668 8669 8670 8671 8672 8673 8674 8675 8676 8677 8678 8679 8680 8681 8682 8683 8684 8685 8686 8687 8688 8689 8690
{
	int num_ports = parent->num_ports;
	int rx_chans_per_10g, rx_chans_per_1g;
	int tx_chans_per_10g, tx_chans_per_1g;
	int i, tot_rx, tot_tx;

	if (!num_10g || !num_1g) {
		rx_chans_per_10g = rx_chans_per_1g =
			(NIU_NUM_RXCHAN / num_ports);
		tx_chans_per_10g = tx_chans_per_1g =
			(NIU_NUM_TXCHAN / num_ports);
	} else {
		rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
		rx_chans_per_10g = (NIU_NUM_RXCHAN -
				    (rx_chans_per_1g * num_1g)) /
			num_10g;

		tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
		tx_chans_per_10g = (NIU_NUM_TXCHAN -
				    (tx_chans_per_1g * num_1g)) /
			num_10g;
	}

	tot_rx = tot_tx = 0;
	for (i = 0; i < num_ports; i++) {
		int type = phy_decode(parent->port_phy, i);

		if (type == PORT_TYPE_10G) {
			parent->rxchan_per_port[i] = rx_chans_per_10g;
			parent->txchan_per_port[i] = tx_chans_per_10g;
		} else {
			parent->rxchan_per_port[i] = rx_chans_per_1g;
			parent->txchan_per_port[i] = tx_chans_per_1g;
		}
8691
		pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8692 8693 8694 8695 8696 8697 8698 8699
			parent->index, i,
			parent->rxchan_per_port[i],
			parent->txchan_per_port[i]);
		tot_rx += parent->rxchan_per_port[i];
		tot_tx += parent->txchan_per_port[i];
	}

	if (tot_rx > NIU_NUM_RXCHAN) {
8700
		pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8701 8702 8703 8704 8705
		       parent->index, tot_rx);
		for (i = 0; i < num_ports; i++)
			parent->rxchan_per_port[i] = 1;
	}
	if (tot_tx > NIU_NUM_TXCHAN) {
8706
		pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8707 8708 8709 8710 8711
		       parent->index, tot_tx);
		for (i = 0; i < num_ports; i++)
			parent->txchan_per_port[i] = 1;
	}
	if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8712 8713
		pr_warn("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
			parent->index, tot_rx, tot_tx);
8714 8715 8716
	}
}

B
Bill Pemberton 已提交
8717
static void niu_divide_rdc_groups(struct niu_parent *parent,
8718
				  int num_10g, int num_1g)
8719 8720 8721 8722 8723 8724 8725 8726 8727 8728 8729 8730 8731 8732 8733 8734 8735 8736 8737 8738 8739 8740
{
	int i, num_ports = parent->num_ports;
	int rdc_group, rdc_groups_per_port;
	int rdc_channel_base;

	rdc_group = 0;
	rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;

	rdc_channel_base = 0;

	for (i = 0; i < num_ports; i++) {
		struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
		int grp, num_channels = parent->rxchan_per_port[i];
		int this_channel_offset;

		tp->first_table_num = rdc_group;
		tp->num_tables = rdc_groups_per_port;
		this_channel_offset = 0;
		for (grp = 0; grp < tp->num_tables; grp++) {
			struct rdc_table *rt = &tp->tables[grp];
			int slot;

8741
			pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8742 8743 8744 8745 8746
				parent->index, i, tp->first_table_num + grp);
			for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
				rt->rxdma_channel[slot] =
					rdc_channel_base + this_channel_offset;

8747
				pr_cont("%d ", rt->rxdma_channel[slot]);
8748 8749 8750 8751

				if (++this_channel_offset == num_channels)
					this_channel_offset = 0;
			}
8752
			pr_cont("]\n");
8753 8754 8755 8756 8757 8758 8759 8760 8761
		}

		parent->rdc_default[i] = rdc_channel_base;

		rdc_channel_base += num_channels;
		rdc_group += rdc_groups_per_port;
	}
}

8762 8763
static int fill_phy_probe_info(struct niu *np, struct niu_parent *parent,
			       struct phy_probe_info *info)
8764 8765 8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777 8778 8779 8780 8781 8782 8783 8784 8785 8786 8787 8788 8789 8790 8791 8792 8793 8794 8795 8796 8797 8798 8799 8800 8801 8802 8803
{
	unsigned long flags;
	int port, err;

	memset(info, 0, sizeof(*info));

	/* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
	niu_lock_parent(np, flags);
	err = 0;
	for (port = 8; port < 32; port++) {
		int dev_id_1, dev_id_2;

		dev_id_1 = mdio_read(np, port,
				     NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
		dev_id_2 = mdio_read(np, port,
				     NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
		err = phy_record(parent, info, dev_id_1, dev_id_2, port,
				 PHY_TYPE_PMA_PMD);
		if (err)
			break;
		dev_id_1 = mdio_read(np, port,
				     NIU_PCS_DEV_ADDR, MII_PHYSID1);
		dev_id_2 = mdio_read(np, port,
				     NIU_PCS_DEV_ADDR, MII_PHYSID2);
		err = phy_record(parent, info, dev_id_1, dev_id_2, port,
				 PHY_TYPE_PCS);
		if (err)
			break;
		dev_id_1 = mii_read(np, port, MII_PHYSID1);
		dev_id_2 = mii_read(np, port, MII_PHYSID2);
		err = phy_record(parent, info, dev_id_1, dev_id_2, port,
				 PHY_TYPE_MII);
		if (err)
			break;
	}
	niu_unlock_parent(np, flags);

	return err;
}

B
Bill Pemberton 已提交
8804
static int walk_phys(struct niu *np, struct niu_parent *parent)
8805 8806 8807 8808 8809 8810 8811
{
	struct phy_probe_info *info = &parent->phy_probe_info;
	int lowest_10g, lowest_1g;
	int num_10g, num_1g;
	u32 val;
	int err;

8812 8813
	num_10g = num_1g = 0;

8814 8815
	if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
	    !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8816 8817 8818 8819 8820 8821
		num_10g = 0;
		num_1g = 2;
		parent->plat_type = PLAT_TYPE_ATCA_CP3220;
		parent->num_ports = 4;
		val = (phy_encode(PORT_TYPE_1G, 0) |
		       phy_encode(PORT_TYPE_1G, 1) |
8822 8823
		       phy_encode(PORT_TYPE_1G, 2) |
		       phy_encode(PORT_TYPE_1G, 3));
8824
	} else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8825 8826 8827 8828 8829
		num_10g = 2;
		num_1g = 0;
		parent->num_ports = 2;
		val = (phy_encode(PORT_TYPE_10G, 0) |
		       phy_encode(PORT_TYPE_10G, 1));
8830 8831 8832 8833 8834 8835 8836 8837 8838 8839
	} else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
		   (parent->plat_type == PLAT_TYPE_NIU)) {
		/* this is the Monza case */
		if (np->flags & NIU_FLAGS_10G) {
			val = (phy_encode(PORT_TYPE_10G, 0) |
			       phy_encode(PORT_TYPE_10G, 1));
		} else {
			val = (phy_encode(PORT_TYPE_1G, 0) |
			       phy_encode(PORT_TYPE_1G, 1));
		}
8840 8841 8842 8843
	} else {
		err = fill_phy_probe_info(np, parent, info);
		if (err)
			return err;
8844

8845 8846
		num_10g = count_10g_ports(info, &lowest_10g);
		num_1g = count_1g_ports(info, &lowest_1g);
8847

8848 8849 8850 8851 8852 8853 8854 8855
		switch ((num_10g << 4) | num_1g) {
		case 0x24:
			if (lowest_1g == 10)
				parent->plat_type = PLAT_TYPE_VF_P0;
			else if (lowest_1g == 26)
				parent->plat_type = PLAT_TYPE_VF_P1;
			else
				goto unknown_vg_1g_port;
8856

8857 8858
			/* fallthru */
		case 0x22:
8859 8860 8861 8862
			val = (phy_encode(PORT_TYPE_10G, 0) |
			       phy_encode(PORT_TYPE_10G, 1) |
			       phy_encode(PORT_TYPE_1G, 2) |
			       phy_encode(PORT_TYPE_1G, 3));
8863
			break;
8864

8865 8866 8867 8868
		case 0x20:
			val = (phy_encode(PORT_TYPE_10G, 0) |
			       phy_encode(PORT_TYPE_10G, 1));
			break;
8869

8870 8871 8872
		case 0x10:
			val = phy_encode(PORT_TYPE_10G, np->port);
			break;
8873

8874 8875 8876 8877 8878 8879 8880 8881 8882 8883 8884 8885 8886 8887 8888 8889 8890 8891 8892 8893 8894 8895 8896 8897 8898 8899 8900 8901 8902 8903 8904 8905 8906 8907 8908 8909 8910
		case 0x14:
			if (lowest_1g == 10)
				parent->plat_type = PLAT_TYPE_VF_P0;
			else if (lowest_1g == 26)
				parent->plat_type = PLAT_TYPE_VF_P1;
			else
				goto unknown_vg_1g_port;

			/* fallthru */
		case 0x13:
			if ((lowest_10g & 0x7) == 0)
				val = (phy_encode(PORT_TYPE_10G, 0) |
				       phy_encode(PORT_TYPE_1G, 1) |
				       phy_encode(PORT_TYPE_1G, 2) |
				       phy_encode(PORT_TYPE_1G, 3));
			else
				val = (phy_encode(PORT_TYPE_1G, 0) |
				       phy_encode(PORT_TYPE_10G, 1) |
				       phy_encode(PORT_TYPE_1G, 2) |
				       phy_encode(PORT_TYPE_1G, 3));
			break;

		case 0x04:
			if (lowest_1g == 10)
				parent->plat_type = PLAT_TYPE_VF_P0;
			else if (lowest_1g == 26)
				parent->plat_type = PLAT_TYPE_VF_P1;
			else
				goto unknown_vg_1g_port;

			val = (phy_encode(PORT_TYPE_1G, 0) |
			       phy_encode(PORT_TYPE_1G, 1) |
			       phy_encode(PORT_TYPE_1G, 2) |
			       phy_encode(PORT_TYPE_1G, 3));
			break;

		default:
8911
			pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8912 8913 8914
			       num_10g, num_1g);
			return -EINVAL;
		}
8915 8916 8917 8918 8919 8920 8921 8922 8923 8924 8925 8926 8927 8928
	}

	parent->port_phy = val;

	if (parent->plat_type == PLAT_TYPE_NIU)
		niu_n2_divide_channels(parent);
	else
		niu_divide_channels(parent, num_10g, num_1g);

	niu_divide_rdc_groups(parent, num_10g, num_1g);

	return 0;

unknown_vg_1g_port:
8929
	pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8930 8931 8932
	return -EINVAL;
}

B
Bill Pemberton 已提交
8933
static int niu_probe_ports(struct niu *np)
8934 8935 8936 8937 8938 8939 8940 8941 8942 8943 8944 8945 8946 8947 8948 8949 8950 8951 8952 8953
{
	struct niu_parent *parent = np->parent;
	int err, i;

	if (parent->port_phy == PORT_PHY_UNKNOWN) {
		err = walk_phys(np, parent);
		if (err)
			return err;

		niu_set_ldg_timer_res(np, 2);
		for (i = 0; i <= LDN_MAX; i++)
			niu_ldn_irq_enable(np, i, 0);
	}

	if (parent->port_phy == PORT_PHY_INVALID)
		return -EINVAL;

	return 0;
}

B
Bill Pemberton 已提交
8954
static int niu_classifier_swstate_init(struct niu *np)
8955 8956 8957
{
	struct niu_classifier *cp = &np->clas;

8958 8959
	cp->tcam_top = (u16) np->port;
	cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8960 8961 8962 8963 8964 8965
	cp->h1_init = 0xffffffff;
	cp->h2_init = 0xffff;

	return fflp_early_init(np);
}

B
Bill Pemberton 已提交
8966
static void niu_link_config_init(struct niu *np)
8967 8968 8969 8970 8971 8972 8973 8974 8975 8976 8977 8978
{
	struct niu_link_config *lp = &np->link_config;

	lp->advertising = (ADVERTISED_10baseT_Half |
			   ADVERTISED_10baseT_Full |
			   ADVERTISED_100baseT_Half |
			   ADVERTISED_100baseT_Full |
			   ADVERTISED_1000baseT_Half |
			   ADVERTISED_1000baseT_Full |
			   ADVERTISED_10000baseT_Full |
			   ADVERTISED_Autoneg);
	lp->speed = lp->active_speed = SPEED_INVALID;
8979 8980 8981
	lp->duplex = DUPLEX_FULL;
	lp->active_duplex = DUPLEX_INVALID;
	lp->autoneg = 1;
8982 8983 8984 8985 8986 8987 8988 8989 8990
#if 0
	lp->loopback_mode = LOOPBACK_MAC;
	lp->active_speed = SPEED_10000;
	lp->active_duplex = DUPLEX_FULL;
#else
	lp->loopback_mode = LOOPBACK_DISABLED;
#endif
}

B
Bill Pemberton 已提交
8991
static int niu_init_mac_ipp_pcs_base(struct niu *np)
8992 8993 8994 8995 8996 8997 8998 8999 9000 9001 9002 9003 9004 9005 9006 9007 9008 9009 9010 9011 9012 9013 9014 9015 9016 9017 9018 9019 9020 9021 9022
{
	switch (np->port) {
	case 0:
		np->mac_regs = np->regs + XMAC_PORT0_OFF;
		np->ipp_off  = 0x00000;
		np->pcs_off  = 0x04000;
		np->xpcs_off = 0x02000;
		break;

	case 1:
		np->mac_regs = np->regs + XMAC_PORT1_OFF;
		np->ipp_off  = 0x08000;
		np->pcs_off  = 0x0a000;
		np->xpcs_off = 0x08000;
		break;

	case 2:
		np->mac_regs = np->regs + BMAC_PORT2_OFF;
		np->ipp_off  = 0x04000;
		np->pcs_off  = 0x0e000;
		np->xpcs_off = ~0UL;
		break;

	case 3:
		np->mac_regs = np->regs + BMAC_PORT3_OFF;
		np->ipp_off  = 0x0c000;
		np->pcs_off  = 0x12000;
		np->xpcs_off = ~0UL;
		break;

	default:
9023
		dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9024 9025 9026 9027 9028 9029
		return -EINVAL;
	}

	return 0;
}

B
Bill Pemberton 已提交
9030
static void niu_try_msix(struct niu *np, u8 *ldg_num_map)
9031 9032 9033 9034
{
	struct msix_entry msi_vec[NIU_NUM_LDG];
	struct niu_parent *parent = np->parent;
	struct pci_dev *pdev = np->pdev;
9035
	int i, num_irqs;
9036 9037 9038 9039 9040 9041 9042 9043 9044 9045 9046 9047 9048 9049 9050 9051
	u8 first_ldg;

	first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
	for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
		ldg_num_map[i] = first_ldg + i;

	num_irqs = (parent->rxchan_per_port[np->port] +
		    parent->txchan_per_port[np->port] +
		    (np->port == 0 ? 3 : 1));
	BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));

	for (i = 0; i < num_irqs; i++) {
		msi_vec[i].vector = 0;
		msi_vec[i].entry = i;
	}

9052 9053
	num_irqs = pci_enable_msix_range(pdev, msi_vec, 1, num_irqs);
	if (num_irqs < 0) {
9054 9055 9056 9057 9058 9059 9060 9061 9062 9063
		np->flags &= ~NIU_FLAGS_MSIX;
		return;
	}

	np->flags |= NIU_FLAGS_MSIX;
	for (i = 0; i < num_irqs; i++)
		np->ldg[i].irq = msi_vec[i].vector;
	np->num_ldg = num_irqs;
}

B
Bill Pemberton 已提交
9064
static int niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9065 9066
{
#ifdef CONFIG_SPARC64
9067
	struct platform_device *op = np->op;
9068 9069 9070
	const u32 *int_prop;
	int i;

9071
	int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9072 9073 9074
	if (!int_prop)
		return -ENODEV;

9075
	for (i = 0; i < op->archdata.num_irqs; i++) {
9076
		ldg_num_map[i] = int_prop[i];
9077
		np->ldg[i].irq = op->archdata.irqs[i];
9078 9079
	}

9080
	np->num_ldg = op->archdata.num_irqs;
9081 9082 9083 9084 9085 9086 9087

	return 0;
#else
	return -EINVAL;
#endif
}

B
Bill Pemberton 已提交
9088
static int niu_ldg_init(struct niu *np)
9089 9090 9091 9092 9093 9094 9095 9096 9097 9098 9099 9100 9101 9102 9103 9104 9105 9106 9107 9108 9109 9110 9111 9112 9113 9114 9115 9116 9117 9118 9119 9120 9121 9122 9123 9124 9125 9126 9127 9128 9129 9130 9131 9132 9133 9134 9135 9136 9137 9138 9139 9140 9141 9142 9143 9144 9145 9146 9147 9148 9149 9150 9151 9152 9153 9154 9155 9156 9157 9158 9159 9160 9161 9162 9163 9164 9165 9166 9167 9168 9169 9170 9171 9172
{
	struct niu_parent *parent = np->parent;
	u8 ldg_num_map[NIU_NUM_LDG];
	int first_chan, num_chan;
	int i, err, ldg_rotor;
	u8 port;

	np->num_ldg = 1;
	np->ldg[0].irq = np->dev->irq;
	if (parent->plat_type == PLAT_TYPE_NIU) {
		err = niu_n2_irq_init(np, ldg_num_map);
		if (err)
			return err;
	} else
		niu_try_msix(np, ldg_num_map);

	port = np->port;
	for (i = 0; i < np->num_ldg; i++) {
		struct niu_ldg *lp = &np->ldg[i];

		netif_napi_add(np->dev, &lp->napi, niu_poll, 64);

		lp->np = np;
		lp->ldg_num = ldg_num_map[i];
		lp->timer = 2; /* XXX */

		/* On N2 NIU the firmware has setup the SID mappings so they go
		 * to the correct values that will route the LDG to the proper
		 * interrupt in the NCU interrupt table.
		 */
		if (np->parent->plat_type != PLAT_TYPE_NIU) {
			err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
			if (err)
				return err;
		}
	}

	/* We adopt the LDG assignment ordering used by the N2 NIU
	 * 'interrupt' properties because that simplifies a lot of
	 * things.  This ordering is:
	 *
	 *	MAC
	 *	MIF	(if port zero)
	 *	SYSERR	(if port zero)
	 *	RX channels
	 *	TX channels
	 */

	ldg_rotor = 0;

	err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
				  LDN_MAC(port));
	if (err)
		return err;

	ldg_rotor++;
	if (ldg_rotor == np->num_ldg)
		ldg_rotor = 0;

	if (port == 0) {
		err = niu_ldg_assign_ldn(np, parent,
					 ldg_num_map[ldg_rotor],
					 LDN_MIF);
		if (err)
			return err;

		ldg_rotor++;
		if (ldg_rotor == np->num_ldg)
			ldg_rotor = 0;

		err = niu_ldg_assign_ldn(np, parent,
					 ldg_num_map[ldg_rotor],
					 LDN_DEVICE_ERROR);
		if (err)
			return err;

		ldg_rotor++;
		if (ldg_rotor == np->num_ldg)
			ldg_rotor = 0;

	}

	first_chan = 0;
	for (i = 0; i < port; i++)
9173
		first_chan += parent->rxchan_per_port[i];
9174 9175 9176 9177 9178 9179 9180 9181 9182 9183 9184 9185 9186 9187 9188
	num_chan = parent->rxchan_per_port[port];

	for (i = first_chan; i < (first_chan + num_chan); i++) {
		err = niu_ldg_assign_ldn(np, parent,
					 ldg_num_map[ldg_rotor],
					 LDN_RXDMA(i));
		if (err)
			return err;
		ldg_rotor++;
		if (ldg_rotor == np->num_ldg)
			ldg_rotor = 0;
	}

	first_chan = 0;
	for (i = 0; i < port; i++)
9189
		first_chan += parent->txchan_per_port[i];
9190 9191 9192 9193 9194 9195 9196 9197 9198 9199 9200 9201 9202 9203 9204
	num_chan = parent->txchan_per_port[port];
	for (i = first_chan; i < (first_chan + num_chan); i++) {
		err = niu_ldg_assign_ldn(np, parent,
					 ldg_num_map[ldg_rotor],
					 LDN_TXDMA(i));
		if (err)
			return err;
		ldg_rotor++;
		if (ldg_rotor == np->num_ldg)
			ldg_rotor = 0;
	}

	return 0;
}

B
Bill Pemberton 已提交
9205
static void niu_ldg_free(struct niu *np)
9206 9207 9208 9209 9210
{
	if (np->flags & NIU_FLAGS_MSIX)
		pci_disable_msix(np->pdev);
}

B
Bill Pemberton 已提交
9211
static int niu_get_of_props(struct niu *np)
9212 9213 9214 9215 9216 9217
{
#ifdef CONFIG_SPARC64
	struct net_device *dev = np->dev;
	struct device_node *dp;
	const char *phy_type;
	const u8 *mac_addr;
9218
	const char *model;
9219 9220 9221
	int prop_len;

	if (np->parent->plat_type == PLAT_TYPE_NIU)
9222
		dp = np->op->dev.of_node;
9223 9224 9225 9226 9227
	else
		dp = pci_device_to_OF_node(np->pdev);

	phy_type = of_get_property(dp, "phy-type", &prop_len);
	if (!phy_type) {
9228 9229
		netdev_err(dev, "%s: OF node lacks phy-type property\n",
			   dp->full_name);
9230 9231 9232 9233 9234 9235 9236 9237 9238
		return -EINVAL;
	}

	if (!strcmp(phy_type, "none"))
		return -ENODEV;

	strcpy(np->vpd.phy_type, phy_type);

	if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9239 9240
		netdev_err(dev, "%s: Illegal phy string [%s]\n",
			   dp->full_name, np->vpd.phy_type);
9241 9242 9243 9244 9245
		return -EINVAL;
	}

	mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
	if (!mac_addr) {
9246 9247
		netdev_err(dev, "%s: OF node lacks local-mac-address property\n",
			   dp->full_name);
9248 9249 9250
		return -EINVAL;
	}
	if (prop_len != dev->addr_len) {
9251 9252
		netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n",
			   dp->full_name, prop_len);
9253
	}
9254 9255
	memcpy(dev->dev_addr, mac_addr, dev->addr_len);
	if (!is_valid_ether_addr(&dev->dev_addr[0])) {
9256 9257
		netdev_err(dev, "%s: OF MAC address is invalid\n",
			   dp->full_name);
9258
		netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->dev_addr);
9259 9260 9261
		return -EINVAL;
	}

9262 9263 9264 9265
	model = of_get_property(dp, "model", &prop_len);

	if (model)
		strcpy(np->vpd.model, model);
9266

T
Tanli Chang 已提交
9267 9268 9269 9270 9271
	if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
		np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
			NIU_FLAGS_HOTPLUG_PHY);
	}

9272 9273 9274 9275 9276 9277
	return 0;
#else
	return -EINVAL;
#endif
}

B
Bill Pemberton 已提交
9278
static int niu_get_invariants(struct niu *np)
9279 9280 9281 9282 9283 9284 9285 9286 9287 9288 9289 9290 9291 9292
{
	int err, have_props;
	u32 offset;

	err = niu_get_of_props(np);
	if (err == -ENODEV)
		return err;

	have_props = !err;

	err = niu_init_mac_ipp_pcs_base(np);
	if (err)
		return err;

9293 9294 9295 9296 9297 9298
	if (have_props) {
		err = niu_get_and_validate_port(np);
		if (err)
			return err;

	} else  {
9299 9300 9301 9302 9303
		if (np->parent->plat_type == PLAT_TYPE_NIU)
			return -EINVAL;

		nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
		offset = niu_pci_vpd_offset(np);
9304 9305
		netif_printk(np, probe, KERN_DEBUG, np->dev,
			     "%s() VPD offset [%08x]\n", __func__, offset);
9306 9307 9308 9309
		if (offset)
			niu_pci_vpd_fetch(np, offset);
		nw64(ESPC_PIO_EN, 0);

9310
		if (np->flags & NIU_FLAGS_VPD_VALID) {
9311
			niu_pci_vpd_validate(np);
9312 9313 9314 9315
			err = niu_get_and_validate_port(np);
			if (err)
				return err;
		}
9316 9317

		if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9318 9319 9320
			err = niu_get_and_validate_port(np);
			if (err)
				return err;
9321 9322 9323 9324 9325 9326 9327 9328 9329 9330 9331 9332 9333 9334 9335 9336 9337 9338 9339 9340 9341 9342 9343 9344 9345 9346 9347 9348 9349 9350
			err = niu_pci_probe_sprom(np);
			if (err)
				return err;
		}
	}

	err = niu_probe_ports(np);
	if (err)
		return err;

	niu_ldg_init(np);

	niu_classifier_swstate_init(np);
	niu_link_config_init(np);

	err = niu_determine_phy_disposition(np);
	if (!err)
		err = niu_init_link(np);

	return err;
}

static LIST_HEAD(niu_parent_list);
static DEFINE_MUTEX(niu_parent_lock);
static int niu_parent_index;

static ssize_t show_port_phy(struct device *dev,
			     struct device_attribute *attr, char *buf)
{
	struct platform_device *plat_dev = to_platform_device(dev);
J
Jingoo Han 已提交
9351
	struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9352 9353 9354 9355 9356 9357 9358 9359 9360 9361 9362 9363 9364 9365 9366 9367 9368 9369 9370 9371 9372 9373 9374 9375 9376 9377 9378 9379 9380
	u32 port_phy = p->port_phy;
	char *orig_buf = buf;
	int i;

	if (port_phy == PORT_PHY_UNKNOWN ||
	    port_phy == PORT_PHY_INVALID)
		return 0;

	for (i = 0; i < p->num_ports; i++) {
		const char *type_str;
		int type;

		type = phy_decode(port_phy, i);
		if (type == PORT_TYPE_10G)
			type_str = "10G";
		else
			type_str = "1G";
		buf += sprintf(buf,
			       (i == 0) ? "%s" : " %s",
			       type_str);
	}
	buf += sprintf(buf, "\n");
	return buf - orig_buf;
}

static ssize_t show_plat_type(struct device *dev,
			      struct device_attribute *attr, char *buf)
{
	struct platform_device *plat_dev = to_platform_device(dev);
J
Jingoo Han 已提交
9381
	struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9382 9383 9384 9385 9386 9387 9388 9389 9390 9391 9392 9393 9394 9395 9396 9397 9398 9399 9400 9401 9402 9403 9404 9405 9406 9407 9408 9409
	const char *type_str;

	switch (p->plat_type) {
	case PLAT_TYPE_ATLAS:
		type_str = "atlas";
		break;
	case PLAT_TYPE_NIU:
		type_str = "niu";
		break;
	case PLAT_TYPE_VF_P0:
		type_str = "vf_p0";
		break;
	case PLAT_TYPE_VF_P1:
		type_str = "vf_p1";
		break;
	default:
		type_str = "unknown";
		break;
	}

	return sprintf(buf, "%s\n", type_str);
}

static ssize_t __show_chan_per_port(struct device *dev,
				    struct device_attribute *attr, char *buf,
				    int rx)
{
	struct platform_device *plat_dev = to_platform_device(dev);
J
Jingoo Han 已提交
9410
	struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9411 9412 9413 9414 9415 9416 9417 9418 9419 9420 9421 9422 9423 9424 9425 9426 9427 9428 9429 9430 9431 9432 9433 9434 9435 9436 9437 9438 9439 9440 9441 9442
	char *orig_buf = buf;
	u8 *arr;
	int i;

	arr = (rx ? p->rxchan_per_port : p->txchan_per_port);

	for (i = 0; i < p->num_ports; i++) {
		buf += sprintf(buf,
			       (i == 0) ? "%d" : " %d",
			       arr[i]);
	}
	buf += sprintf(buf, "\n");

	return buf - orig_buf;
}

static ssize_t show_rxchan_per_port(struct device *dev,
				    struct device_attribute *attr, char *buf)
{
	return __show_chan_per_port(dev, attr, buf, 1);
}

static ssize_t show_txchan_per_port(struct device *dev,
				    struct device_attribute *attr, char *buf)
{
	return __show_chan_per_port(dev, attr, buf, 1);
}

static ssize_t show_num_ports(struct device *dev,
			      struct device_attribute *attr, char *buf)
{
	struct platform_device *plat_dev = to_platform_device(dev);
J
Jingoo Han 已提交
9443
	struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9444 9445 9446 9447 9448 9449 9450 9451 9452 9453 9454 9455 9456

	return sprintf(buf, "%d\n", p->num_ports);
}

static struct device_attribute niu_parent_attributes[] = {
	__ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
	__ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
	__ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
	__ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
	__ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
	{}
};

B
Bill Pemberton 已提交
9457
static struct niu_parent *niu_new_parent(struct niu *np,
9458
					 union niu_parent_id *id, u8 ptype)
9459 9460 9461 9462 9463
{
	struct platform_device *plat_dev;
	struct niu_parent *p;
	int i;

9464
	plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9465
						   NULL, 0);
D
Dan Carpenter 已提交
9466
	if (IS_ERR(plat_dev))
9467 9468
		return NULL;

9469
	for (i = 0; niu_parent_attributes[i].attr.name; i++) {
9470 9471 9472 9473 9474 9475 9476 9477 9478 9479 9480 9481 9482 9483 9484 9485 9486 9487 9488 9489 9490 9491 9492 9493 9494 9495 9496 9497 9498 9499 9500 9501 9502 9503 9504 9505 9506 9507 9508 9509 9510 9511 9512 9513 9514 9515 9516 9517 9518 9519 9520
		int err = device_create_file(&plat_dev->dev,
					     &niu_parent_attributes[i]);
		if (err)
			goto fail_unregister;
	}

	p = kzalloc(sizeof(*p), GFP_KERNEL);
	if (!p)
		goto fail_unregister;

	p->index = niu_parent_index++;

	plat_dev->dev.platform_data = p;
	p->plat_dev = plat_dev;

	memcpy(&p->id, id, sizeof(*id));
	p->plat_type = ptype;
	INIT_LIST_HEAD(&p->list);
	atomic_set(&p->refcnt, 0);
	list_add(&p->list, &niu_parent_list);
	spin_lock_init(&p->lock);

	p->rxdma_clock_divider = 7500;

	p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
	if (p->plat_type == PLAT_TYPE_NIU)
		p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;

	for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
		int index = i - CLASS_CODE_USER_PROG1;

		p->tcam_key[index] = TCAM_KEY_TSEL;
		p->flow_key[index] = (FLOW_KEY_IPSA |
				      FLOW_KEY_IPDA |
				      FLOW_KEY_PROTO |
				      (FLOW_KEY_L4_BYTE12 <<
				       FLOW_KEY_L4_0_SHIFT) |
				      (FLOW_KEY_L4_BYTE12 <<
				       FLOW_KEY_L4_1_SHIFT));
	}

	for (i = 0; i < LDN_MAX + 1; i++)
		p->ldg_map[i] = LDG_INVALID;

	return p;

fail_unregister:
	platform_device_unregister(plat_dev);
	return NULL;
}

B
Bill Pemberton 已提交
9521
static struct niu_parent *niu_get_parent(struct niu *np,
9522
					 union niu_parent_id *id, u8 ptype)
9523 9524 9525 9526 9527 9528 9529 9530 9531 9532 9533 9534 9535 9536 9537 9538 9539 9540 9541 9542 9543 9544 9545 9546 9547 9548 9549 9550 9551 9552 9553 9554 9555 9556 9557 9558 9559 9560 9561 9562 9563
{
	struct niu_parent *p, *tmp;
	int port = np->port;

	mutex_lock(&niu_parent_lock);
	p = NULL;
	list_for_each_entry(tmp, &niu_parent_list, list) {
		if (!memcmp(id, &tmp->id, sizeof(*id))) {
			p = tmp;
			break;
		}
	}
	if (!p)
		p = niu_new_parent(np, id, ptype);

	if (p) {
		char port_name[6];
		int err;

		sprintf(port_name, "port%d", port);
		err = sysfs_create_link(&p->plat_dev->dev.kobj,
					&np->device->kobj,
					port_name);
		if (!err) {
			p->ports[port] = np;
			atomic_inc(&p->refcnt);
		}
	}
	mutex_unlock(&niu_parent_lock);

	return p;
}

static void niu_put_parent(struct niu *np)
{
	struct niu_parent *p = np->parent;
	u8 port = np->port;
	char port_name[6];

	BUG_ON(!p || p->ports[port] != np);

9564 9565
	netif_printk(np, probe, KERN_DEBUG, np->dev,
		     "%s() port[%u]\n", __func__, port);
9566 9567 9568 9569 9570 9571 9572 9573 9574 9575 9576 9577 9578 9579 9580 9581 9582 9583 9584 9585 9586 9587 9588 9589 9590 9591 9592 9593 9594 9595 9596 9597 9598 9599 9600 9601 9602 9603 9604 9605 9606 9607 9608 9609 9610 9611

	sprintf(port_name, "port%d", port);

	mutex_lock(&niu_parent_lock);

	sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);

	p->ports[port] = NULL;
	np->parent = NULL;

	if (atomic_dec_and_test(&p->refcnt)) {
		list_del(&p->list);
		platform_device_unregister(p->plat_dev);
	}

	mutex_unlock(&niu_parent_lock);
}

static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
				    u64 *handle, gfp_t flag)
{
	dma_addr_t dh;
	void *ret;

	ret = dma_alloc_coherent(dev, size, &dh, flag);
	if (ret)
		*handle = dh;
	return ret;
}

static void niu_pci_free_coherent(struct device *dev, size_t size,
				  void *cpu_addr, u64 handle)
{
	dma_free_coherent(dev, size, cpu_addr, handle);
}

static u64 niu_pci_map_page(struct device *dev, struct page *page,
			    unsigned long offset, size_t size,
			    enum dma_data_direction direction)
{
	return dma_map_page(dev, page, offset, size, direction);
}

static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
			       size_t size, enum dma_data_direction direction)
{
9612
	dma_unmap_page(dev, dma_address, size, direction);
9613 9614 9615 9616 9617 9618 9619 9620 9621 9622 9623 9624 9625 9626 9627 9628 9629 9630 9631 9632 9633 9634 9635 9636 9637
}

static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
			      size_t size,
			      enum dma_data_direction direction)
{
	return dma_map_single(dev, cpu_addr, size, direction);
}

static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
				 size_t size,
				 enum dma_data_direction direction)
{
	dma_unmap_single(dev, dma_address, size, direction);
}

static const struct niu_ops niu_pci_ops = {
	.alloc_coherent	= niu_pci_alloc_coherent,
	.free_coherent	= niu_pci_free_coherent,
	.map_page	= niu_pci_map_page,
	.unmap_page	= niu_pci_unmap_page,
	.map_single	= niu_pci_map_single,
	.unmap_single	= niu_pci_unmap_single,
};

B
Bill Pemberton 已提交
9638
static void niu_driver_version(void)
9639 9640 9641 9642 9643 9644 9645
{
	static int niu_version_printed;

	if (niu_version_printed++ == 0)
		pr_info("%s", version);
}

9646 9647 9648 9649
static struct net_device *niu_alloc_and_init(struct device *gen_dev,
					     struct pci_dev *pdev,
					     struct platform_device *op,
					     const struct niu_ops *ops, u8 port)
9650
{
9651
	struct net_device *dev;
9652 9653
	struct niu *np;

9654
	dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9655
	if (!dev)
9656 9657 9658 9659 9660 9661 9662 9663 9664 9665 9666 9667 9668 9669 9670 9671 9672 9673 9674 9675 9676
		return NULL;

	SET_NETDEV_DEV(dev, gen_dev);

	np = netdev_priv(dev);
	np->dev = dev;
	np->pdev = pdev;
	np->op = op;
	np->device = gen_dev;
	np->ops = ops;

	np->msg_enable = niu_debug;

	spin_lock_init(&np->lock);
	INIT_WORK(&np->reset_task, niu_reset_task);

	np->port = port;

	return dev;
}

S
Stephen Hemminger 已提交
9677 9678 9679
static const struct net_device_ops niu_netdev_ops = {
	.ndo_open		= niu_open,
	.ndo_stop		= niu_close,
9680
	.ndo_start_xmit		= niu_start_xmit,
9681
	.ndo_get_stats64	= niu_get_stats,
9682
	.ndo_set_rx_mode	= niu_set_rx_mode,
S
Stephen Hemminger 已提交
9683 9684 9685 9686 9687 9688 9689
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_set_mac_address	= niu_set_mac_addr,
	.ndo_do_ioctl		= niu_ioctl,
	.ndo_tx_timeout		= niu_tx_timeout,
	.ndo_change_mtu		= niu_change_mtu,
};

B
Bill Pemberton 已提交
9690
static void niu_assign_netdev_ops(struct net_device *dev)
9691
{
S
Stephen Hemminger 已提交
9692
	dev->netdev_ops = &niu_netdev_ops;
9693 9694 9695 9696
	dev->ethtool_ops = &niu_ethtool_ops;
	dev->watchdog_timeo = NIU_TX_TIMEOUT;
}

B
Bill Pemberton 已提交
9697
static void niu_device_announce(struct niu *np)
9698 9699 9700
{
	struct net_device *dev = np->dev;

J
Johannes Berg 已提交
9701
	pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9702

9703 9704 9705 9706 9707 9708 9709 9710 9711 9712 9713 9714 9715 9716
	if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
		pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
				dev->name,
				(np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
				(np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
				(np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
				(np->mac_xcvr == MAC_XCVR_MII ? "MII" :
				 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
				np->vpd.phy_type);
	} else {
		pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
				dev->name,
				(np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
				(np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9717 9718 9719
				(np->flags & NIU_FLAGS_FIBER ? "FIBER" :
				 (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
				  "COPPER")),
9720 9721 9722 9723
				(np->mac_xcvr == MAC_XCVR_MII ? "MII" :
				 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
				np->vpd.phy_type);
	}
9724 9725
}

B
Bill Pemberton 已提交
9726
static void niu_set_basic_features(struct net_device *dev)
D
David S. Miller 已提交
9727
{
9728 9729
	dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
	dev->features |= dev->hw_features | NETIF_F_RXCSUM;
D
David S. Miller 已提交
9730 9731
}

B
Bill Pemberton 已提交
9732
static int niu_pci_init_one(struct pci_dev *pdev,
9733
			    const struct pci_device_id *ent)
9734 9735 9736 9737
{
	union niu_parent_id parent_id;
	struct net_device *dev;
	struct niu *np;
9738
	int err;
9739 9740 9741 9742 9743 9744
	u64 dma_mask;

	niu_driver_version();

	err = pci_enable_device(pdev);
	if (err) {
9745
		dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9746 9747 9748 9749 9750
		return err;
	}

	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
	    !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9751
		dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9752 9753 9754 9755 9756 9757
		err = -ENODEV;
		goto err_out_disable_pdev;
	}

	err = pci_request_regions(pdev, DRV_MODULE_NAME);
	if (err) {
9758
		dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9759 9760 9761
		goto err_out_disable_pdev;
	}

9762
	if (!pci_is_pcie(pdev)) {
9763
		dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9764
		err = -ENODEV;
9765 9766 9767 9768 9769 9770 9771 9772 9773 9774 9775 9776 9777 9778 9779 9780 9781 9782 9783 9784 9785 9786 9787
		goto err_out_free_res;
	}

	dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
				 &niu_pci_ops, PCI_FUNC(pdev->devfn));
	if (!dev) {
		err = -ENOMEM;
		goto err_out_free_res;
	}
	np = netdev_priv(dev);

	memset(&parent_id, 0, sizeof(parent_id));
	parent_id.pci.domain = pci_domain_nr(pdev->bus);
	parent_id.pci.bus = pdev->bus->number;
	parent_id.pci.device = PCI_SLOT(pdev->devfn);

	np->parent = niu_get_parent(np, &parent_id,
				    PLAT_TYPE_ATLAS);
	if (!np->parent) {
		err = -ENOMEM;
		goto err_out_free_dev;
	}

9788 9789 9790 9791 9792
	pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
		PCI_EXP_DEVCTL_NOSNOOP_EN,
		PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE |
		PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE |
		PCI_EXP_DEVCTL_RELAX_EN);
9793

9794
	dma_mask = DMA_BIT_MASK(44);
9795 9796 9797 9798 9799
	err = pci_set_dma_mask(pdev, dma_mask);
	if (!err) {
		dev->features |= NETIF_F_HIGHDMA;
		err = pci_set_consistent_dma_mask(pdev, dma_mask);
		if (err) {
9800
			dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9801 9802 9803
			goto err_out_release_parent;
		}
	}
9804
	if (err) {
9805
		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9806
		if (err) {
9807
			dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9808 9809 9810 9811
			goto err_out_release_parent;
		}
	}

D
David S. Miller 已提交
9812
	niu_set_basic_features(dev);
9813

9814 9815
	dev->priv_flags |= IFF_UNICAST_FLT;

D
David S. Miller 已提交
9816
	np->regs = pci_ioremap_bar(pdev, 0);
9817
	if (!np->regs) {
9818
		dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9819 9820 9821 9822 9823 9824 9825 9826 9827 9828 9829 9830 9831 9832
		err = -ENOMEM;
		goto err_out_release_parent;
	}

	pci_set_master(pdev);
	pci_save_state(pdev);

	dev->irq = pdev->irq;

	niu_assign_netdev_ops(dev);

	err = niu_get_invariants(np);
	if (err) {
		if (err != -ENODEV)
9833
			dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9834 9835 9836 9837 9838
		goto err_out_iounmap;
	}

	err = register_netdev(dev);
	if (err) {
9839
		dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9840 9841 9842 9843 9844 9845 9846 9847 9848 9849 9850 9851 9852 9853 9854 9855 9856 9857 9858 9859 9860 9861 9862 9863 9864 9865 9866 9867 9868 9869
		goto err_out_iounmap;
	}

	pci_set_drvdata(pdev, dev);

	niu_device_announce(np);

	return 0;

err_out_iounmap:
	if (np->regs) {
		iounmap(np->regs);
		np->regs = NULL;
	}

err_out_release_parent:
	niu_put_parent(np);

err_out_free_dev:
	free_netdev(dev);

err_out_free_res:
	pci_release_regions(pdev);

err_out_disable_pdev:
	pci_disable_device(pdev);

	return err;
}

B
Bill Pemberton 已提交
9870
static void niu_pci_remove_one(struct pci_dev *pdev)
9871 9872 9873 9874 9875 9876 9877 9878 9879 9880 9881 9882 9883 9884 9885 9886 9887 9888 9889 9890 9891 9892 9893 9894 9895 9896 9897 9898 9899 9900 9901
{
	struct net_device *dev = pci_get_drvdata(pdev);

	if (dev) {
		struct niu *np = netdev_priv(dev);

		unregister_netdev(dev);
		if (np->regs) {
			iounmap(np->regs);
			np->regs = NULL;
		}

		niu_ldg_free(np);

		niu_put_parent(np);

		free_netdev(dev);
		pci_release_regions(pdev);
		pci_disable_device(pdev);
	}
}

static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct net_device *dev = pci_get_drvdata(pdev);
	struct niu *np = netdev_priv(dev);
	unsigned long flags;

	if (!netif_running(dev))
		return 0;

9902
	flush_work(&np->reset_task);
9903 9904 9905 9906 9907 9908 9909 9910 9911 9912 9913 9914 9915 9916 9917 9918 9919 9920 9921 9922 9923 9924 9925 9926 9927 9928 9929 9930 9931 9932 9933 9934 9935 9936 9937 9938 9939 9940 9941 9942 9943 9944 9945 9946 9947 9948 9949 9950 9951 9952 9953
	niu_netif_stop(np);

	del_timer_sync(&np->timer);

	spin_lock_irqsave(&np->lock, flags);
	niu_enable_interrupts(np, 0);
	spin_unlock_irqrestore(&np->lock, flags);

	netif_device_detach(dev);

	spin_lock_irqsave(&np->lock, flags);
	niu_stop_hw(np);
	spin_unlock_irqrestore(&np->lock, flags);

	pci_save_state(pdev);

	return 0;
}

static int niu_resume(struct pci_dev *pdev)
{
	struct net_device *dev = pci_get_drvdata(pdev);
	struct niu *np = netdev_priv(dev);
	unsigned long flags;
	int err;

	if (!netif_running(dev))
		return 0;

	pci_restore_state(pdev);

	netif_device_attach(dev);

	spin_lock_irqsave(&np->lock, flags);

	err = niu_init_hw(np);
	if (!err) {
		np->timer.expires = jiffies + HZ;
		add_timer(&np->timer);
		niu_netif_start(np);
	}

	spin_unlock_irqrestore(&np->lock, flags);

	return err;
}

static struct pci_driver niu_pci_driver = {
	.name		= DRV_MODULE_NAME,
	.id_table	= niu_pci_tbl,
	.probe		= niu_pci_init_one,
B
Bill Pemberton 已提交
9954
	.remove		= niu_pci_remove_one,
9955 9956 9957 9958 9959 9960 9961 9962 9963 9964 9965 9966 9967 9968 9969 9970 9971 9972 9973 9974 9975 9976 9977 9978 9979 9980 9981 9982 9983 9984 9985 9986 9987 9988 9989 9990 9991 9992 9993 9994 9995 9996 9997 9998 9999 10000 10001 10002 10003 10004 10005 10006 10007 10008 10009 10010 10011 10012 10013 10014 10015 10016 10017
	.suspend	= niu_suspend,
	.resume		= niu_resume,
};

#ifdef CONFIG_SPARC64
static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
				     u64 *dma_addr, gfp_t flag)
{
	unsigned long order = get_order(size);
	unsigned long page = __get_free_pages(flag, order);

	if (page == 0UL)
		return NULL;
	memset((char *)page, 0, PAGE_SIZE << order);
	*dma_addr = __pa(page);

	return (void *) page;
}

static void niu_phys_free_coherent(struct device *dev, size_t size,
				   void *cpu_addr, u64 handle)
{
	unsigned long order = get_order(size);

	free_pages((unsigned long) cpu_addr, order);
}

static u64 niu_phys_map_page(struct device *dev, struct page *page,
			     unsigned long offset, size_t size,
			     enum dma_data_direction direction)
{
	return page_to_phys(page) + offset;
}

static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
				size_t size, enum dma_data_direction direction)
{
	/* Nothing to do.  */
}

static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
			       size_t size,
			       enum dma_data_direction direction)
{
	return __pa(cpu_addr);
}

static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
				  size_t size,
				  enum dma_data_direction direction)
{
	/* Nothing to do.  */
}

static const struct niu_ops niu_phys_ops = {
	.alloc_coherent	= niu_phys_alloc_coherent,
	.free_coherent	= niu_phys_free_coherent,
	.map_page	= niu_phys_map_page,
	.unmap_page	= niu_phys_unmap_page,
	.map_single	= niu_phys_map_single,
	.unmap_single	= niu_phys_unmap_single,
};

B
Bill Pemberton 已提交
10018
static int niu_of_probe(struct platform_device *op)
10019 10020 10021 10022 10023 10024 10025 10026 10027
{
	union niu_parent_id parent_id;
	struct net_device *dev;
	struct niu *np;
	const u32 *reg;
	int err;

	niu_driver_version();

10028
	reg = of_get_property(op->dev.of_node, "reg", NULL);
10029
	if (!reg) {
10030
		dev_err(&op->dev, "%s: No 'reg' property, aborting\n",
10031
			op->dev.of_node->full_name);
10032 10033 10034 10035 10036 10037 10038 10039 10040 10041 10042 10043
		return -ENODEV;
	}

	dev = niu_alloc_and_init(&op->dev, NULL, op,
				 &niu_phys_ops, reg[0] & 0x1);
	if (!dev) {
		err = -ENOMEM;
		goto err_out;
	}
	np = netdev_priv(dev);

	memset(&parent_id, 0, sizeof(parent_id));
10044
	parent_id.of = of_get_parent(op->dev.of_node);
10045 10046 10047 10048 10049 10050 10051 10052

	np->parent = niu_get_parent(np, &parent_id,
				    PLAT_TYPE_NIU);
	if (!np->parent) {
		err = -ENOMEM;
		goto err_out_free_dev;
	}

D
David S. Miller 已提交
10053
	niu_set_basic_features(dev);
10054 10055

	np->regs = of_ioremap(&op->resource[1], 0,
10056
			      resource_size(&op->resource[1]),
10057 10058
			      "niu regs");
	if (!np->regs) {
10059
		dev_err(&op->dev, "Cannot map device registers, aborting\n");
10060 10061 10062 10063 10064
		err = -ENOMEM;
		goto err_out_release_parent;
	}

	np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10065
				    resource_size(&op->resource[2]),
10066 10067
				    "niu vregs-1");
	if (!np->vir_regs_1) {
10068
		dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10069 10070 10071 10072 10073
		err = -ENOMEM;
		goto err_out_iounmap;
	}

	np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10074
				    resource_size(&op->resource[3]),
10075 10076
				    "niu vregs-2");
	if (!np->vir_regs_2) {
10077
		dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10078 10079 10080 10081 10082 10083 10084 10085 10086
		err = -ENOMEM;
		goto err_out_iounmap;
	}

	niu_assign_netdev_ops(dev);

	err = niu_get_invariants(np);
	if (err) {
		if (err != -ENODEV)
10087
			dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10088 10089 10090 10091 10092
		goto err_out_iounmap;
	}

	err = register_netdev(dev);
	if (err) {
10093
		dev_err(&op->dev, "Cannot register net device, aborting\n");
10094 10095 10096
		goto err_out_iounmap;
	}

10097
	platform_set_drvdata(op, dev);
10098 10099 10100 10101 10102 10103 10104 10105

	niu_device_announce(np);

	return 0;

err_out_iounmap:
	if (np->vir_regs_1) {
		of_iounmap(&op->resource[2], np->vir_regs_1,
10106
			   resource_size(&op->resource[2]));
10107 10108 10109 10110 10111
		np->vir_regs_1 = NULL;
	}

	if (np->vir_regs_2) {
		of_iounmap(&op->resource[3], np->vir_regs_2,
10112
			   resource_size(&op->resource[3]));
10113 10114 10115 10116 10117
		np->vir_regs_2 = NULL;
	}

	if (np->regs) {
		of_iounmap(&op->resource[1], np->regs,
10118
			   resource_size(&op->resource[1]));
10119 10120 10121 10122 10123 10124 10125 10126 10127 10128 10129 10130 10131
		np->regs = NULL;
	}

err_out_release_parent:
	niu_put_parent(np);

err_out_free_dev:
	free_netdev(dev);

err_out:
	return err;
}

B
Bill Pemberton 已提交
10132
static int niu_of_remove(struct platform_device *op)
10133
{
10134
	struct net_device *dev = platform_get_drvdata(op);
10135 10136 10137 10138 10139 10140 10141 10142

	if (dev) {
		struct niu *np = netdev_priv(dev);

		unregister_netdev(dev);

		if (np->vir_regs_1) {
			of_iounmap(&op->resource[2], np->vir_regs_1,
10143
				   resource_size(&op->resource[2]));
10144 10145 10146 10147 10148
			np->vir_regs_1 = NULL;
		}

		if (np->vir_regs_2) {
			of_iounmap(&op->resource[3], np->vir_regs_2,
10149
				   resource_size(&op->resource[3]));
10150 10151 10152 10153 10154
			np->vir_regs_2 = NULL;
		}

		if (np->regs) {
			of_iounmap(&op->resource[1], np->regs,
10155
				   resource_size(&op->resource[1]));
10156 10157 10158 10159 10160 10161 10162 10163 10164 10165 10166 10167
			np->regs = NULL;
		}

		niu_ldg_free(np);

		niu_put_parent(np);

		free_netdev(dev);
	}
	return 0;
}

10168
static const struct of_device_id niu_match[] = {
10169 10170 10171 10172 10173 10174 10175 10176
	{
		.name = "network",
		.compatible = "SUNW,niusl",
	},
	{},
};
MODULE_DEVICE_TABLE(of, niu_match);

10177
static struct platform_driver niu_of_driver = {
10178 10179 10180 10181
	.driver = {
		.name = "niu",
		.of_match_table = niu_match,
	},
10182
	.probe		= niu_of_probe,
B
Bill Pemberton 已提交
10183
	.remove		= niu_of_remove,
10184 10185 10186 10187 10188 10189 10190 10191
};

#endif /* CONFIG_SPARC64 */

static int __init niu_init(void)
{
	int err = 0;

10192
	BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10193 10194 10195 10196

	niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);

#ifdef CONFIG_SPARC64
10197
	err = platform_driver_register(&niu_of_driver);
10198 10199 10200 10201 10202 10203
#endif

	if (!err) {
		err = pci_register_driver(&niu_pci_driver);
#ifdef CONFIG_SPARC64
		if (err)
10204
			platform_driver_unregister(&niu_of_driver);
10205 10206 10207 10208 10209 10210 10211 10212 10213 10214
#endif
	}

	return err;
}

static void __exit niu_exit(void)
{
	pci_unregister_driver(&niu_pci_driver);
#ifdef CONFIG_SPARC64
10215
	platform_driver_unregister(&niu_of_driver);
10216 10217 10218 10219 10220
#endif
}

module_init(niu_init);
module_exit(niu_exit);