Merge /spare/repo/linux-2.6/

Documentation/arm/Samsung-S3C24XX/USB-Host.txt

+			S3C24XX USB Host support
+			========================
+
+
+
+Introduction
+------------
+
+  This document details the S3C2410/S3C2440 in-built OHCI USB host support.
+
+Configuration
+-------------
+
+  Enable at least the following kernel options:
+
+  menuconfig:
+
+   Device Drivers  --->
+     USB support  --->
+       <*> Support for Host-side USB
+       <*>   OHCI HCD support
+
+
+  .config:
+    CONFIG_USB
+    CONFIG_USB_OHCI_HCD
+
+
+  Once these options are configured, the standard set of USB device
+  drivers can be configured and used.
+
+
+Board Support
+-------------
+
+  The driver attaches to a platform device, which will need to be
+  added by the board specific support file in linux/arch/arm/mach-s3c2410,
+  such as mach-bast.c or mach-smdk2410.c
+
+  The platform device's platform_data field is only needed if the
+  board implements extra power control or over-current monitoring.
+
+  The OHCI driver does not ensure the state of the S3C2410's MISCCTRL
+  register, so if both ports are to be used for the host, then it is
+  the board support file's responsibility to ensure that the second
+  port is configured to be connected to the OHCI core.
+
+
+Platform Data
+-------------
+
+  See linux/include/asm-arm/arch-s3c2410/usb-control.h for the
+  descriptions of the platform device data. An implementation
+  can be found in linux/arch/arm/mach-s3c2410/usb-simtec.c .
+
+  The `struct s3c2410_hcd_info` contains a pair of functions
+  that get called to enable over-current detection, and to
+  control the port power status.
+
+  The ports are numbered 0 and 1.
+
+  power_control:
+
+    Called to enable or disable the power on the port.
+
+  enable_oc:
+
+    Called to enable or disable the over-current monitoring.
+    This should claim or release the resources being used to
+    check the power condition on the port, such as an IRQ.
+
+  report_oc:
+
+    The OHCI driver fills this field in for the over-current code
+    to call when there is a change to the over-current state on
+    an port. The ports argument is a bitmask of 1 bit per port,
+    with bit X being 1 for an over-current on port X.
+
+    The function s3c2410_usb_report_oc() has been provided to
+    ensure this is called correctly.
+
+  port[x]:
+
+    This is struct describes each port, 0 or 1. The platform driver
+    should set the flags field of each port to S3C_HCDFLG_USED if
+    the port is enabled.
+
+
+
+Document Author
+---------------
+
+Ben Dooks, (c) 2005 Simtec Electronics

arch/arm/kernel/entry-armv.S

@@ -533,6 +533,13 @@ ENTRY(__switch_to)
 	ldr	r3, [r2, #TI_TP_VALUE]
 	stmia	ip!, {r4 - sl, fp, sp, lr}	@ Store most regs on stack
 	ldr	r6, [r2, #TI_CPU_DOMAIN]!
+#if __LINUX_ARM_ARCH__ >= 6
+#ifdef CONFIG_CPU_MPCORE
+	clrex
+#else
+	strex	r3, r4, [ip]			@ Clear exclusive monitor
+#endif
+#endif
 #if defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_IWMMXT)
 	mra	r4, r5, acc0
 	stmia   ip, {r4, r5}

arch/arm/lib/bitops.h

-#if __LINUX_ARM_ARCH__ >= 6
+#include <linux/config.h>
+
+#if __LINUX_ARM_ARCH__ >= 6 && defined(CONFIG_CPU_MPCORE)
 	.macro	bitop, instr
 	mov	r2, #1
 	and	r3, r0, #7		@ Get bit offset

arch/arm/mach-s3c2410/usb-simtec.c

 /* linux/arch/arm/mach-s3c2410/usb-simtec.c
  *
- * Copyright (c) 2004 Simtec Electronics
+ * Copyright (c) 2004,2005 Simtec Electronics
  *   Ben Dooks <ben@simtec.co.uk>
  *
  * http://www.simtec.co.uk/products/EB2410ITX/
@@ -14,6 +14,8 @@
  * Modifications:
  *	14-Sep-2004 BJD  Created
  *	18-Oct-2004 BJD  Cleanups, and added code to report OC cleared
+ *	09-Aug-2005 BJD  Renamed s3c2410_report_oc to s3c2410_usb_report_oc
+ *	09-Aug-2005 BJD  Ports powered only if both are enabled
 */
 
 #define DEBUG
@@ -47,13 +49,19 @@
  * designed boards.
 */
 
+static unsigned int power_state[2];
+
 static void
 usb_simtec_powercontrol(int port, int to)
 {
 	pr_debug("usb_simtec_powercontrol(%d,%d)\n", port, to);
 
-	if (port == 1)
-		s3c2410_gpio_setpin(S3C2410_GPB4, to ? 0:1);
+	power_state[port] = to;
+
+	if (power_state[0] && power_state[1])
+		s3c2410_gpio_setpin(S3C2410_GPB4, 0);
+	else
+		s3c2410_gpio_setpin(S3C2410_GPB4, 1);
 }
 
 static irqreturn_t
@@ -63,10 +71,10 @@ usb_simtec_ocirq(int irq, void *pw, struct pt_regs *regs)
 
 	if (s3c2410_gpio_getpin(S3C2410_GPG10) == 0) {
 		pr_debug("usb_simtec: over-current irq (oc detected)\n");
-		s3c2410_report_oc(info, 3);
+		s3c2410_usb_report_oc(info, 3);
 	} else {
 		pr_debug("usb_simtec: over-current irq (oc cleared)\n");
-		s3c2410_report_oc(info, 0);
+		s3c2410_usb_report_oc(info, 0);
 	}
 
 	return IRQ_HANDLED;

arch/arm/mm/mm-armv.c

@@ -383,6 +383,7 @@ static void __init build_mem_type_table(void)
 {
 	struct cachepolicy *cp;
 	unsigned int cr = get_cr();
+	unsigned int user_pgprot;
 	int cpu_arch = cpu_architecture();
 	int i;
 
@@ -408,6 +409,9 @@ static void __init build_mem_type_table(void)
 		}
 	}
 
+	cp = &cache_policies[cachepolicy];
+	user_pgprot = cp->pte;
+
 	/*
 	 * ARMv6 and above have extended page tables.
 	 */
@@ -426,11 +430,18 @@ static void __init build_mem_type_table(void)
 		mem_types[MT_MINICLEAN].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
 		mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
 
+		/*
+		 * Mark the device area as "shared device"
+		 */
 		mem_types[MT_DEVICE].prot_pte |= L_PTE_BUFFERABLE;
 		mem_types[MT_DEVICE].prot_sect |= PMD_SECT_BUFFERED;
-	}
 
-	cp = &cache_policies[cachepolicy];
+		/*
+		 * User pages need to be mapped with the ASID
+		 * (iow, non-global)
+		 */
+		user_pgprot |= L_PTE_ASID;
+	}
 
 	if (cpu_arch >= CPU_ARCH_ARMv5) {
 		mem_types[MT_LOW_VECTORS].prot_pte |= cp->pte & PTE_CACHEABLE;
@@ -448,7 +459,7 @@ static void __init build_mem_type_table(void)
 
 	for (i = 0; i < 16; i++) {
 		unsigned long v = pgprot_val(protection_map[i]);
-		v &= (~(PTE_BUFFERABLE|PTE_CACHEABLE)) | cp->pte;
+		v &= (~(PTE_BUFFERABLE|PTE_CACHEABLE)) | user_pgprot;
 		protection_map[i] = __pgprot(v);
 	}
 

arch/arm/mm/proc-v6.S

@@ -111,12 +111,6 @@ ENTRY(cpu_v6_switch_mm)
 	mcr	p15, 0, r1, c13, c0, 1		@ set context ID
 	mov	pc, lr
 
-#define nG	(1 << 11)
-#define APX	(1 << 9)
-#define AP1	(1 << 5)
-#define AP0	(1 << 4)
-#define XN	(1 << 0)
-
 /*
  *	cpu_v6_set_pte(ptep, pte)
  *
@@ -139,24 +133,24 @@ ENTRY(cpu_v6_switch_mm)
 ENTRY(cpu_v6_set_pte)
 	str	r1, [r0], #-2048		@ linux version
 
-	bic	r2, r1, #0x00000ff0
+	bic	r2, r1, #0x000007f0
 	bic	r2, r2, #0x00000003
-	orr	r2, r2, #AP0 | 2
+	orr	r2, r2, #PTE_EXT_AP0 | 2
 
 	tst	r1, #L_PTE_WRITE
 	tstne	r1, #L_PTE_DIRTY
-	orreq	r2, r2, #APX
+	orreq	r2, r2, #PTE_EXT_APX
 
 	tst	r1, #L_PTE_USER
-	orrne	r2, r2, #AP1 | nG
-	tstne	r2, #APX
-	bicne	r2, r2, #APX | AP0
+	orrne	r2, r2, #PTE_EXT_AP1
+	tstne	r2, #PTE_EXT_APX
+	bicne	r2, r2, #PTE_EXT_APX | PTE_EXT_AP0
 
 	tst	r1, #L_PTE_YOUNG
-	biceq	r2, r2, #APX | AP1 | AP0
+	biceq	r2, r2, #PTE_EXT_APX | PTE_EXT_AP_MASK
 
 @	tst	r1, #L_PTE_EXEC
-@	orreq	r2, r2, #XN
+@	orreq	r2, r2, #PTE_EXT_XN
 
 	tst	r1, #L_PTE_PRESENT
 	moveq	r2, #0

arch/ppc64/kernel/prom_init.c

@@ -1803,7 +1803,7 @@ static void __init fixup_device_tree(void)
 	if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev))
 	    == PROM_ERROR)
 		return;
-	if (u3_rev != 0x35)
+	if (u3_rev != 0x35 && u3_rev != 0x37)
 		return;
 	/* does it need fixup ? */
 	if (prom_getproplen(i2c, "interrupts") > 0)

drivers/input/gameport/ns558.c

@@ -275,9 +275,9 @@ static int __init ns558_init(void)
 
 static void __exit ns558_exit(void)
 {
-	struct ns558 *ns558;
+	struct ns558 *ns558, *safe;
 
-	list_for_each_entry(ns558, &ns558_list, node) {
+	list_for_each_entry_safe(ns558, safe, &ns558_list, node) {
 		gameport_unregister_port(ns558->gameport);
 		release_region(ns558->io & ~(ns558->size - 1), ns558->size);
 		kfree(ns558);

drivers/mmc/wbsd.c

@@ -42,7 +42,7 @@
 #include "wbsd.h"
 
 #define DRIVER_NAME "wbsd"
-#define DRIVER_VERSION "1.2"
+#define DRIVER_VERSION "1.3"
 
 #ifdef CONFIG_MMC_DEBUG
 #define DBG(x...) \

drivers/net/hamradio/6pack.c

@@ -130,12 +130,11 @@ struct sixpack {
 
 #define AX25_6PACK_HEADER_LEN 0
 
-static void sp_start_tx_timer(struct sixpack *);
 static void sixpack_decode(struct sixpack *, unsigned char[], int);
 static int encode_sixpack(unsigned char *, unsigned char *, int, unsigned char);
 
 /*
- * perform the persistence/slottime algorithm for CSMA access. If the
+ * Perform the persistence/slottime algorithm for CSMA access. If the
  * persistence check was successful, write the data to the serial driver.
  * Note that in case of DAMA operation, the data is not sent here.
  */
@@ -143,7 +142,7 @@ static int encode_sixpack(unsigned char *, unsigned char *, int, unsigned char);
 static void sp_xmit_on_air(unsigned long channel)
 {
 	struct sixpack *sp = (struct sixpack *) channel;
-	int actual;
+	int actual, when = sp->slottime;
 	static unsigned char random;
 
 	random = random * 17 + 41;
@@ -159,20 +158,10 @@ static void sp_xmit_on_air(unsigned long channel)
 		sp->tty->driver->write(sp->tty, &sp->led_state, 1);
 		sp->status2 = 0;
 	} else
-		sp_start_tx_timer(sp);
+		mod_timer(&sp->tx_t, jiffies + ((when + 1) * HZ) / 100);
 }
 
 /* ----> 6pack timer interrupt handler and friends. <---- */
-static void sp_start_tx_timer(struct sixpack *sp)
-{
-	int when = sp->slottime;
-
-	del_timer(&sp->tx_t);
-	sp->tx_t.data = (unsigned long) sp;
-	sp->tx_t.function = sp_xmit_on_air;
-	sp->tx_t.expires = jiffies + ((when + 1) * HZ) / 100;
-	add_timer(&sp->tx_t);
-}
 
 /* Encapsulate one AX.25 frame and stuff into a TTY queue. */
 static void sp_encaps(struct sixpack *sp, unsigned char *icp, int len)
@@ -243,8 +232,7 @@ static void sp_encaps(struct sixpack *sp, unsigned char *icp, int len)
 		sp->xleft = count;
 		sp->xhead = sp->xbuff;
 		sp->status2 = count;
-		if (sp->duplex == 0)
-			sp_start_tx_timer(sp);
+		sp_xmit_on_air((unsigned long)sp);
 	}
 
 	return;

drivers/scsi/dpt_i2o.c

@@ -907,9 +907,13 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev
 		raptorFlag = TRUE;
 	}
 
-
+	if (pci_request_regions(pDev, "dpt_i2o")) {
+		PERROR("dpti: adpt_config_hba: pci request region failed\n");
+		return -EINVAL;
+	}
 	base_addr_virt = ioremap(base_addr0_phys,hba_map0_area_size);
 	if (!base_addr_virt) {
+		pci_release_regions(pDev);
 		PERROR("dpti: adpt_config_hba: io remap failed\n");
 		return -EINVAL;
 	}
@@ -919,6 +923,7 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev
 		if (!msg_addr_virt) {
 			PERROR("dpti: adpt_config_hba: io remap failed on BAR1\n");
 			iounmap(base_addr_virt);
+			pci_release_regions(pDev);
 			return -EINVAL;
 		}
 	} else {
@@ -932,6 +937,7 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev
 			iounmap(msg_addr_virt);
 		}
 		iounmap(base_addr_virt);
+		pci_release_regions(pDev);
 		return -ENOMEM;
 	}
 	memset(pHba, 0, sizeof(adpt_hba));
@@ -1027,6 +1033,7 @@ static void adpt_i2o_delete_hba(adpt_hba* pHba)
 	up(&adpt_configuration_lock);
 
 	iounmap(pHba->base_addr_virt);
+	pci_release_regions(pHba->pDev);
 	if(pHba->msg_addr_virt != pHba->base_addr_virt){
 		iounmap(pHba->msg_addr_virt);
 	}

drivers/scsi/libata-scsi.c

@@ -385,6 +385,7 @@ int ata_scsi_error(struct Scsi_Host *host)
 	 * appropriate place
 	 */
 	host->host_failed--;
+	INIT_LIST_HEAD(&host->eh_cmd_q);
 
 	DPRINTK("EXIT\n");
 	return 0;

drivers/scsi/sata_sx4.c

@@ -468,7 +468,7 @@ static void pdc20621_dma_prep(struct ata_queued_cmd *qc)
 	for (i = 0; i < last; i++) {
 		buf[idx++] = cpu_to_le32(sg_dma_address(&sg[i]));
 		buf[idx++] = cpu_to_le32(sg_dma_len(&sg[i]));
-		total_len += sg[i].length;
+		total_len += sg_dma_len(&sg[i]);
 	}
 	buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT);
 	sgt_len = idx * 4;

drivers/scsi/scsi_scan.c

@@ -336,9 +336,23 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
 	unsigned long flags;
 	const int size = sizeof(struct scsi_target)
 		+ shost->transportt->target_size;
-	struct scsi_target *starget = kmalloc(size, GFP_ATOMIC);
+	struct scsi_target *starget;
 	struct scsi_target *found_target;
 
+	/*
+	 * Obtain the real parent from the transport. The transport
+	 * is allowed to fail (no error) if there is nothing at that
+	 * target id.
+	 */
+	if (shost->transportt->target_parent) {
+		spin_lock_irqsave(shost->host_lock, flags);
+		parent = shost->transportt->target_parent(shost, channel, id);
+		spin_unlock_irqrestore(shost->host_lock, flags);
+		if (!parent)
+			return NULL;
+	}
+
+	starget = kmalloc(size, GFP_KERNEL);
 	if (!starget) {
 		printk(KERN_ERR "%s: allocation failure\n", __FUNCTION__);
 		return NULL;

drivers/scsi/scsi_transport_fc.c

@@ -1022,6 +1022,23 @@ static int fc_rport_match(struct attribute_container *cont,
 	return &i->rport_attr_cont.ac == cont;
 }
 
+
+/*
+ * Must be called with shost->host_lock held
+ */
+static struct device *fc_target_parent(struct Scsi_Host *shost,
+					int channel, uint id)
+{
+	struct fc_rport *rport;
+
+	list_for_each_entry(rport, &fc_host_rports(shost), peers)
+		if ((rport->channel == channel) &&
+		    (rport->scsi_target_id == id))
+			return &rport->dev;
+
+	return NULL;
+}
+
 struct scsi_transport_template *
 fc_attach_transport(struct fc_function_template *ft)
 {
@@ -1057,6 +1074,8 @@ fc_attach_transport(struct fc_function_template *ft)
 
 	/* Transport uses the shost workq for scsi scanning */
 	i->t.create_work_queue = 1;
+
+	i->t.target_parent = fc_target_parent;
 	
 	/*
 	 * Setup SCSI Target Attributes.

drivers/video/pxafb.c

@@ -717,6 +717,9 @@ static void pxafb_enable_controller(struct pxafb_info *fbi)
 	DPRINTK("reg_lccr2 0x%08x\n", (unsigned int) fbi->reg_lccr2);
 	DPRINTK("reg_lccr3 0x%08x\n", (unsigned int) fbi->reg_lccr3);
 
+	/* enable LCD controller clock */
+	pxa_set_cken(CKEN16_LCD, 1);
+
 	/* Sequence from 11.7.10 */
 	LCCR3 = fbi->reg_lccr3;
 	LCCR2 = fbi->reg_lccr2;
@@ -750,6 +753,9 @@ static void pxafb_disable_controller(struct pxafb_info *fbi)
 
 	schedule_timeout(20 * HZ / 1000);
 	remove_wait_queue(&fbi->ctrlr_wait, &wait);
+
+	/* disable LCD controller clock */
+	pxa_set_cken(CKEN16_LCD, 0);
 }
 
 /*
@@ -1299,8 +1305,6 @@ int __init pxafb_probe(struct device *dev)
 		ret = -ENOMEM;
 		goto failed;
 	}
-	/* enable LCD controller clock */
-	pxa_set_cken(CKEN16_LCD, 1);
 
 	ret = request_irq(IRQ_LCD, pxafb_handle_irq, SA_INTERRUPT, "LCD", fbi);
 	if (ret) {

include/asm-arm/arch-s3c2410/usb-control.h

@@ -12,6 +12,7 @@
  * Changelog:
  *  11-Sep-2004 BJD  Created file
  *  21-Sep-2004 BJD  Updated port info
+ *  09-Aug-2005 BJD  Renamed s3c2410_report_oc s3c2410_usb_report_oc
 */
 
 #ifndef __ASM_ARCH_USBCONTROL_H
@@ -35,7 +36,7 @@ struct s3c2410_hcd_info {
 	void		(*report_oc)(struct s3c2410_hcd_info *, int ports);
 };
 
-static void inline s3c2410_report_oc(struct s3c2410_hcd_info *info, int ports)
+static void inline s3c2410_usb_report_oc(struct s3c2410_hcd_info *info, int ports)
 {
 	if (info->report_oc != NULL) {
 		(info->report_oc)(info, ports);

include/asm-arm/pgtable.h

@@ -188,12 +188,18 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
 /*
  *   - extended small page/tiny page
  */
+#define PTE_EXT_XN		(1 << 0)	/* v6 */
 #define PTE_EXT_AP_MASK		(3 << 4)
+#define PTE_EXT_AP0		(1 << 4)
+#define PTE_EXT_AP1		(2 << 4)
 #define PTE_EXT_AP_UNO_SRO	(0 << 4)
-#define PTE_EXT_AP_UNO_SRW	(1 << 4)
-#define PTE_EXT_AP_URO_SRW	(2 << 4)
-#define PTE_EXT_AP_URW_SRW	(3 << 4)
+#define PTE_EXT_AP_UNO_SRW	(PTE_EXT_AP0)
+#define PTE_EXT_AP_URO_SRW	(PTE_EXT_AP1)
+#define PTE_EXT_AP_URW_SRW	(PTE_EXT_AP1|PTE_EXT_AP0)
 #define PTE_EXT_TEX(x)		((x) << 6)	/* v5 */
+#define PTE_EXT_APX		(1 << 9)	/* v6 */
+#define PTE_EXT_SHARED		(1 << 10)	/* v6 */
+#define PTE_EXT_NG		(1 << 11)	/* v6 */
 
 /*
  *   - small page
@@ -224,6 +230,8 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
 #define L_PTE_WRITE		(1 << 5)
 #define L_PTE_EXEC		(1 << 6)
 #define L_PTE_DIRTY		(1 << 7)
+#define L_PTE_SHARED		(1 << 10)	/* shared between CPUs (v6) */
+#define L_PTE_ASID		(1 << 11)	/* non-global (use ASID, v6) */
 
 #ifndef __ASSEMBLY__
 

include/scsi/scsi_transport.h

@@ -29,6 +29,14 @@ struct scsi_transport_template {
 	struct transport_container target_attrs;
 	struct transport_container device_attrs;
 
+	/*
+	 * If set, call target_parent prior to allocating a scsi_target,
+	 * so we get the appropriate parent for the target. This function
+	 * is required for transports like FC and iSCSI that do not put the
+	 * scsi_target under scsi_host.
+	 */
+	struct device *(*target_parent)(struct Scsi_Host *, int, uint);
+
 	/* The size of the specific transport attribute structure (a
 	 * space of this size will be left at the end of the
 	 * scsi_* structure */

kernel/workqueue.c

@@ -308,8 +308,6 @@ struct workqueue_struct *__create_workqueue(const char *name,
 	struct workqueue_struct *wq;
 	struct task_struct *p;
 
-	BUG_ON(strlen(name) > 10);
-
 	wq = kmalloc(sizeof(*wq), GFP_KERNEL);
 	if (!wq)
 		return NULL;

net/decnet/af_decnet.c

@@ -1876,15 +1876,6 @@ static inline unsigned int dn_current_mss(struct sock *sk, int flags)
 	return mss_now;
 }
 
-static int dn_error(struct sock *sk, int flags, int err)
-{
-	if (err == -EPIPE)
-		err = sock_error(sk) ? : -EPIPE;
-	if (err == -EPIPE && !(flags & MSG_NOSIGNAL))
-		send_sig(SIGPIPE, current, 0);
-	return err;
-}
-
 static int dn_sendmsg(struct kiocb *iocb, struct socket *sock,
 	   struct msghdr *msg, size_t size)
 {
@@ -2045,7 +2036,7 @@ static int dn_sendmsg(struct kiocb *iocb, struct socket *sock,
 	return sent ? sent : err;
 
 out_err:
-	err = dn_error(sk, flags, err);
+	err = sk_stream_error(sk, flags, err);
 	release_sock(sk);
 	return err;
 }