提交 66d2cc95 编写于 作者: K Kumar Gala 提交者: Linus Torvalds

[PATCH] ppc32: Added PCI support MPC83xx

Adds support for the two PCI busses on MPC83xx and the MPC834x SYS/PIBS
reference board.

The code initializes PCI inbound/outbound windows, allocates and registers
PCI memory/io space.  Be aware that setup of the PCI buses on the PIBs
board is expected to be done by the firmware.
Signed-off-by: NTony Li <tony.li@freescale.com>
Signed-off-by: NKumar Gala <kumar.gala@freescale.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 cc9c540b
......@@ -495,6 +495,11 @@ config WINCEPT
MPC821 PowerPC, introduced in 1998 and designed to be used in
thin-client machines. Say Y to support it directly.
Be aware that PCI buses can only function when SYS board is plugged
into the PIB (Platform IO Board) board from Freescale which provide
3 PCI slots. The PIBs PCI initialization is the bootloader's
responsiblilty.
endchoice
choice
......@@ -1153,6 +1158,11 @@ config PCI_DOMAINS
bool
default PCI
config MPC83xx_PCI2
bool " Supprt for 2nd PCI host controller"
depends on PCI && MPC834x
default y if MPC834x_SYS
config PCI_QSPAN
bool "QSpan PCI"
depends on !4xx && !CPM2 && 8xx
......
......@@ -62,9 +62,29 @@ extern unsigned long total_memory; /* in mm/init */
unsigned char __res[sizeof (bd_t)];
#ifdef CONFIG_PCI
#error "PCI is not supported"
/* NEED mpc83xx_map_irq & mpc83xx_exclude_device
see platforms/85xx/mpc85xx_ads_common.c */
int
mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
{
static char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x11 */
{PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x12 */
{PIRQD, PIRQA, PIRQB, PIRQC} /* idsel 0x13 */
};
const long min_idsel = 0x11, max_idsel = 0x13, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
}
int
mpc83xx_exclude_device(u_char bus, u_char devfn)
{
return PCIBIOS_SUCCESSFUL;
}
#endif /* CONFIG_PCI */
/* ************************************************************************
......@@ -88,7 +108,7 @@ mpc834x_sys_setup_arch(void)
#ifdef CONFIG_PCI
/* setup PCI host bridges */
mpc83xx_sys_setup_hose();
mpc83xx_setup_hose();
#endif
mpc83xx_early_serial_map();
......@@ -175,10 +195,17 @@ mpc834x_sys_init_IRQ(void)
IRQ_SENSE_LEVEL, /* EXT 1 */
IRQ_SENSE_LEVEL, /* EXT 2 */
0, /* EXT 3 */
#ifdef CONFIG_PCI
IRQ_SENSE_LEVEL, /* EXT 4 */
IRQ_SENSE_LEVEL, /* EXT 5 */
IRQ_SENSE_LEVEL, /* EXT 6 */
IRQ_SENSE_LEVEL, /* EXT 7 */
#else
0, /* EXT 4 */
0, /* EXT 5 */
0, /* EXT 6 */
0, /* EXT 7 */
#endif
};
ipic_init(binfo->bi_immr_base + 0x00700, 0, MPC83xx_IPIC_IRQ_OFFSET, senses, 8);
......
......@@ -26,7 +26,7 @@
#define VIRT_IMMRBAR ((uint)0xfe000000)
#define BCSR_PHYS_ADDR ((uint)0xf8000000)
#define BCSR_SIZE ((uint)(32 * 1024))
#define BCSR_SIZE ((uint)(128 * 1024))
#define BCSR_MISC_REG2_OFF 0x07
#define BCSR_MISC_REG2_PORESET 0x01
......@@ -34,23 +34,25 @@
#define BCSR_MISC_REG3_OFF 0x08
#define BCSR_MISC_REG3_CNFLOCK 0x80
#ifdef CONFIG_PCI
/* PCI interrupt controller */
#define PIRQA MPC83xx_IRQ_IRQ4
#define PIRQB MPC83xx_IRQ_IRQ5
#define PIRQC MPC83xx_IRQ_IRQ6
#define PIRQD MPC83xx_IRQ_IRQ7
#define MPC834x_SYS_PCI1_LOWER_IO 0x00000000
#define MPC834x_SYS_PCI1_UPPER_IO 0x00ffffff
#define MPC834x_SYS_PCI1_LOWER_MEM 0x80000000
#define MPC834x_SYS_PCI1_UPPER_MEM 0x9fffffff
#define MPC834x_SYS_PCI1_IO_BASE 0xe2000000
#define MPC834x_SYS_PCI1_MEM_OFFSET 0x00000000
#define MPC834x_SYS_PCI1_IO_SIZE 0x01000000
#endif /* CONFIG_PCI */
#define PIRQA MPC83xx_IRQ_EXT4
#define PIRQB MPC83xx_IRQ_EXT5
#define PIRQC MPC83xx_IRQ_EXT6
#define PIRQD MPC83xx_IRQ_EXT7
#define MPC83xx_PCI1_LOWER_IO 0x00000000
#define MPC83xx_PCI1_UPPER_IO 0x00ffffff
#define MPC83xx_PCI1_LOWER_MEM 0x80000000
#define MPC83xx_PCI1_UPPER_MEM 0x9fffffff
#define MPC83xx_PCI1_IO_BASE 0xe2000000
#define MPC83xx_PCI1_MEM_OFFSET 0x00000000
#define MPC83xx_PCI1_IO_SIZE 0x01000000
#define MPC83xx_PCI2_LOWER_IO 0x00000000
#define MPC83xx_PCI2_UPPER_IO 0x00ffffff
#define MPC83xx_PCI2_LOWER_MEM 0xa0000000
#define MPC83xx_PCI2_UPPER_MEM 0xbfffffff
#define MPC83xx_PCI2_IO_BASE 0xe3000000
#define MPC83xx_PCI2_MEM_OFFSET 0x00000000
#define MPC83xx_PCI2_IO_SIZE 0x01000000
#endif /* __MACH_MPC83XX_SYS_H__ */
/* Created by Tony Li <tony.li@freescale.com>
* Copyright (c) 2005 freescale semiconductor
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __PPC_SYSLIB_PPC83XX_PCI_H
#define __PPC_SYSLIB_PPC83XX_PCI_H
typedef struct immr_clk {
u32 spmr; /* system PLL mode Register */
u32 occr; /* output clock control Register */
u32 sccr; /* system clock control Register */
u8 res0[0xF4];
} immr_clk_t;
/*
* Sequencer
*/
typedef struct immr_ios {
u32 potar0;
u8 res0[4];
u32 pobar0;
u8 res1[4];
u32 pocmr0;
u8 res2[4];
u32 potar1;
u8 res3[4];
u32 pobar1;
u8 res4[4];
u32 pocmr1;
u8 res5[4];
u32 potar2;
u8 res6[4];
u32 pobar2;
u8 res7[4];
u32 pocmr2;
u8 res8[4];
u32 potar3;
u8 res9[4];
u32 pobar3;
u8 res10[4];
u32 pocmr3;
u8 res11[4];
u32 potar4;
u8 res12[4];
u32 pobar4;
u8 res13[4];
u32 pocmr4;
u8 res14[4];
u32 potar5;
u8 res15[4];
u32 pobar5;
u8 res16[4];
u32 pocmr5;
u8 res17[4];
u8 res18[0x60];
u32 pmcr;
u8 res19[4];
u32 dtcr;
u8 res20[4];
} immr_ios_t;
#define POTAR_TA_MASK 0x000fffff
#define POBAR_BA_MASK 0x000fffff
#define POCMR_EN 0x80000000
#define POCMR_IO 0x40000000 /* 0--memory space 1--I/O space */
#define POCMR_SE 0x20000000 /* streaming enable */
#define POCMR_DST 0x10000000 /* 0--PCI1 1--PCI2 */
#define POCMR_CM_MASK 0x000fffff
/*
* PCI Controller Control and Status Registers
*/
typedef struct immr_pcictrl {
u32 esr;
u32 ecdr;
u32 eer;
u32 eatcr;
u32 eacr;
u32 eeacr;
u32 edlcr;
u32 edhcr;
u32 gcr;
u32 ecr;
u32 gsr;
u8 res0[12];
u32 pitar2;
u8 res1[4];
u32 pibar2;
u32 piebar2;
u32 piwar2;
u8 res2[4];
u32 pitar1;
u8 res3[4];
u32 pibar1;
u32 piebar1;
u32 piwar1;
u8 res4[4];
u32 pitar0;
u8 res5[4];
u32 pibar0;
u8 res6[4];
u32 piwar0;
u8 res7[132];
} immr_pcictrl_t;
#define PITAR_TA_MASK 0x000fffff
#define PIBAR_MASK 0xffffffff
#define PIEBAR_EBA_MASK 0x000fffff
#define PIWAR_EN 0x80000000
#define PIWAR_PF 0x20000000
#define PIWAR_RTT_MASK 0x000f0000
#define PIWAR_RTT_NO_SNOOP 0x00040000
#define PIWAR_RTT_SNOOP 0x00050000
#define PIWAR_WTT_MASK 0x0000f000
#define PIWAR_WTT_NO_SNOOP 0x00004000
#define PIWAR_WTT_SNOOP 0x00005000
#define PIWAR_IWS_MASK 0x0000003F
#define PIWAR_IWS_4K 0x0000000B
#define PIWAR_IWS_8K 0x0000000C
#define PIWAR_IWS_16K 0x0000000D
#define PIWAR_IWS_32K 0x0000000E
#define PIWAR_IWS_64K 0x0000000F
#define PIWAR_IWS_128K 0x00000010
#define PIWAR_IWS_256K 0x00000011
#define PIWAR_IWS_512K 0x00000012
#define PIWAR_IWS_1M 0x00000013
#define PIWAR_IWS_2M 0x00000014
#define PIWAR_IWS_4M 0x00000015
#define PIWAR_IWS_8M 0x00000016
#define PIWAR_IWS_16M 0x00000017
#define PIWAR_IWS_32M 0x00000018
#define PIWAR_IWS_64M 0x00000019
#define PIWAR_IWS_128M 0x0000001A
#define PIWAR_IWS_256M 0x0000001B
#define PIWAR_IWS_512M 0x0000001C
#define PIWAR_IWS_1G 0x0000001D
#define PIWAR_IWS_2G 0x0000001E
#endif /* __PPC_SYSLIB_PPC83XX_PCI_H */
......@@ -11,6 +11,17 @@
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Added PCI support -- Tony Li <tony.li@freescale.com>
*/
#include <linux/config.h>
......@@ -31,6 +42,10 @@
#include <asm/delay.h>
#include <syslib/ppc83xx_setup.h>
#if defined(CONFIG_PCI)
#include <asm/delay.h>
#include <syslib/ppc83xx_pci.h>
#endif
phys_addr_t immrbar;
......@@ -162,4 +177,237 @@ mpc83xx_halt(void)
for(;;);
}
/* PCI SUPPORT DOES NOT EXIT, MODEL after ppc85xx_setup.c */
#if defined(CONFIG_PCI)
void __init
mpc83xx_setup_pci1(struct pci_controller *hose)
{
u16 reg16;
volatile immr_pcictrl_t * pci_ctrl;
volatile immr_ios_t * ios;
bd_t *binfo = (bd_t *) __res;
pci_ctrl = ioremap(binfo->bi_immr_base + 0x8500, sizeof(immr_pcictrl_t));
ios = ioremap(binfo->bi_immr_base + 0x8400, sizeof(immr_ios_t));
/*
* Configure PCI Outbound Translation Windows
*/
ios->potar0 = (MPC83xx_PCI1_LOWER_MEM >> 12) & POTAR_TA_MASK;
ios->pobar0 = (MPC83xx_PCI1_LOWER_MEM >> 12) & POBAR_BA_MASK;
ios->pocmr0 = POCMR_EN |
(((0xffffffff - (MPC83xx_PCI1_UPPER_MEM -
MPC83xx_PCI1_LOWER_MEM)) >> 12) & POCMR_CM_MASK);
/* mapped to PCI1 IO space */
ios->potar1 = (MPC83xx_PCI1_LOWER_IO >> 12) & POTAR_TA_MASK;
ios->pobar1 = (MPC83xx_PCI1_IO_BASE >> 12) & POBAR_BA_MASK;
ios->pocmr1 = POCMR_EN | POCMR_IO |
(((0xffffffff - (MPC83xx_PCI1_UPPER_IO -
MPC83xx_PCI1_LOWER_IO)) >> 12) & POCMR_CM_MASK);
/*
* Configure PCI Inbound Translation Windows
*/
pci_ctrl->pitar1 = 0x0;
pci_ctrl->pibar1 = 0x0;
pci_ctrl->piebar1 = 0x0;
pci_ctrl->piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | PIWAR_IWS_2G;
/*
* Release PCI RST signal
*/
pci_ctrl->gcr = 0;
udelay(2000);
pci_ctrl->gcr = 1;
udelay(2000);
reg16 = 0xff;
early_read_config_word(hose, hose->first_busno, 0, PCI_COMMAND, &reg16);
reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
early_write_config_word(hose, hose->first_busno, 0, PCI_COMMAND, reg16);
/*
* Clear non-reserved bits in status register.
*/
early_write_config_word(hose, hose->first_busno, 0, PCI_STATUS, 0xffff);
early_write_config_byte(hose, hose->first_busno, 0, PCI_LATENCY_TIMER, 0x80);
iounmap(pci_ctrl);
iounmap(ios);
}
void __init
mpc83xx_setup_pci2(struct pci_controller *hose)
{
u16 reg16;
volatile immr_pcictrl_t * pci_ctrl;
volatile immr_ios_t * ios;
bd_t *binfo = (bd_t *) __res;
pci_ctrl = ioremap(binfo->bi_immr_base + 0x8600, sizeof(immr_pcictrl_t));
ios = ioremap(binfo->bi_immr_base + 0x8400, sizeof(immr_ios_t));
/*
* Configure PCI Outbound Translation Windows
*/
ios->potar3 = (MPC83xx_PCI2_LOWER_MEM >> 12) & POTAR_TA_MASK;
ios->pobar3 = (MPC83xx_PCI2_LOWER_MEM >> 12) & POBAR_BA_MASK;
ios->pocmr3 = POCMR_EN | POCMR_DST |
(((0xffffffff - (MPC83xx_PCI2_UPPER_MEM -
MPC83xx_PCI2_LOWER_MEM)) >> 12) & POCMR_CM_MASK);
/* mapped to PCI2 IO space */
ios->potar4 = (MPC83xx_PCI2_LOWER_IO >> 12) & POTAR_TA_MASK;
ios->pobar4 = (MPC83xx_PCI2_IO_BASE >> 12) & POBAR_BA_MASK;
ios->pocmr4 = POCMR_EN | POCMR_DST | POCMR_IO |
(((0xffffffff - (MPC83xx_PCI2_UPPER_IO -
MPC83xx_PCI2_LOWER_IO)) >> 12) & POCMR_CM_MASK);
/*
* Configure PCI Inbound Translation Windows
*/
pci_ctrl->pitar1 = 0x0;
pci_ctrl->pibar1 = 0x0;
pci_ctrl->piebar1 = 0x0;
pci_ctrl->piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | PIWAR_IWS_2G;
/*
* Release PCI RST signal
*/
pci_ctrl->gcr = 0;
udelay(2000);
pci_ctrl->gcr = 1;
udelay(2000);
reg16 = 0xff;
early_read_config_word(hose, hose->first_busno, 0, PCI_COMMAND, &reg16);
reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
early_write_config_word(hose, hose->first_busno, 0, PCI_COMMAND, reg16);
/*
* Clear non-reserved bits in status register.
*/
early_write_config_word(hose, hose->first_busno, 0, PCI_STATUS, 0xffff);
early_write_config_byte(hose, hose->first_busno, 0, PCI_LATENCY_TIMER, 0x80);
iounmap(pci_ctrl);
iounmap(ios);
}
/*
* PCI buses can be enabled only if SYS board combinates with PIB
* (Platform IO Board) board which provide 3 PCI slots. There is 2 PCI buses
* and 3 PCI slots, so people must configure the routes between them before
* enable PCI bus. This routes are under the control of PCA9555PW device which
* can be accessed via I2C bus 2 and are configured by firmware. Refer to
* Freescale to get more information about firmware configuration.
*/
extern int mpc83xx_exclude_device(u_char bus, u_char devfn);
extern int mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel,
unsigned char pin);
void __init
mpc83xx_setup_hose(void)
{
u32 val32;
volatile immr_clk_t * clk;
struct pci_controller * hose1;
#ifdef CONFIG_MPC83xx_PCI2
struct pci_controller * hose2;
#endif
bd_t * binfo = (bd_t *)__res;
clk = ioremap(binfo->bi_immr_base + 0xA00,
sizeof(immr_clk_t));
/*
* Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
*/
val32 = clk->occr;
udelay(2000);
clk->occr = 0xff000000;
udelay(2000);
iounmap(clk);
hose1 = pcibios_alloc_controller();
if(!hose1)
return;
ppc_md.pci_swizzle = common_swizzle;
ppc_md.pci_map_irq = mpc83xx_map_irq;
hose1->bus_offset = 0;
hose1->first_busno = 0;
hose1->last_busno = 0xff;
setup_indirect_pci(hose1, binfo->bi_immr_base + PCI1_CFG_ADDR_OFFSET,
binfo->bi_immr_base + PCI1_CFG_DATA_OFFSET);
hose1->set_cfg_type = 1;
mpc83xx_setup_pci1(hose1);
hose1->pci_mem_offset = MPC83xx_PCI1_MEM_OFFSET;
hose1->mem_space.start = MPC83xx_PCI1_LOWER_MEM;
hose1->mem_space.end = MPC83xx_PCI1_UPPER_MEM;
hose1->io_base_phys = MPC83xx_PCI1_IO_BASE;
hose1->io_space.start = MPC83xx_PCI1_LOWER_IO;
hose1->io_space.end = MPC83xx_PCI1_UPPER_IO;
#ifdef CONFIG_MPC83xx_PCI2
isa_io_base = (unsigned long)ioremap(MPC83xx_PCI1_IO_BASE,
MPC83xx_PCI1_IO_SIZE + MPC83xx_PCI2_IO_SIZE);
#else
isa_io_base = (unsigned long)ioremap(MPC83xx_PCI1_IO_BASE,
MPC83xx_PCI1_IO_SIZE);
#endif /* CONFIG_MPC83xx_PCI2 */
hose1->io_base_virt = (void *)isa_io_base;
/* setup resources */
pci_init_resource(&hose1->io_resource,
MPC83xx_PCI1_LOWER_IO,
MPC83xx_PCI1_UPPER_IO,
IORESOURCE_IO, "PCI host bridge 1");
pci_init_resource(&hose1->mem_resources[0],
MPC83xx_PCI1_LOWER_MEM,
MPC83xx_PCI1_UPPER_MEM,
IORESOURCE_MEM, "PCI host bridge 1");
ppc_md.pci_exclude_device = mpc83xx_exclude_device;
hose1->last_busno = pciauto_bus_scan(hose1, hose1->first_busno);
#ifdef CONFIG_MPC83xx_PCI2
hose2 = pcibios_alloc_controller();
if(!hose2)
return;
hose2->bus_offset = hose1->last_busno + 1;
hose2->first_busno = hose1->last_busno + 1;
hose2->last_busno = 0xff;
setup_indirect_pci(hose2, binfo->bi_immr_base + PCI2_CFG_ADDR_OFFSET,
binfo->bi_immr_base + PCI2_CFG_DATA_OFFSET);
hose2->set_cfg_type = 1;
mpc83xx_setup_pci2(hose2);
hose2->pci_mem_offset = MPC83xx_PCI2_MEM_OFFSET;
hose2->mem_space.start = MPC83xx_PCI2_LOWER_MEM;
hose2->mem_space.end = MPC83xx_PCI2_UPPER_MEM;
hose2->io_base_phys = MPC83xx_PCI2_IO_BASE;
hose2->io_space.start = MPC83xx_PCI2_LOWER_IO;
hose2->io_space.end = MPC83xx_PCI2_UPPER_IO;
hose2->io_base_virt = (void *)(isa_io_base + MPC83xx_PCI1_IO_SIZE);
/* setup resources */
pci_init_resource(&hose2->io_resource,
MPC83xx_PCI2_LOWER_IO,
MPC83xx_PCI2_UPPER_IO,
IORESOURCE_IO, "PCI host bridge 2");
pci_init_resource(&hose2->mem_resources[0],
MPC83xx_PCI2_LOWER_MEM,
MPC83xx_PCI2_UPPER_MEM,
IORESOURCE_MEM, "PCI host bridge 2");
hose2->last_busno = pciauto_bus_scan(hose2, hose2->first_busno);
#endif /* CONFIG_MPC83xx_PCI2 */
}
#endif /*CONFIG_PCI*/
......@@ -12,6 +12,14 @@
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __PPC_SYSLIB_PPC83XX_SETUP_H
......@@ -19,7 +27,6 @@
#include <linux/config.h>
#include <linux/init.h>
#include <asm/ppcboot.h>
extern unsigned long mpc83xx_find_end_of_memory(void) __init;
extern long mpc83xx_time_init(void) __init;
......@@ -31,13 +38,11 @@ extern void mpc83xx_halt(void);
extern void mpc83xx_setup_hose(void) __init;
/* PCI config */
#if 0
#define PCI1_CFG_ADDR_OFFSET (FIXME)
#define PCI1_CFG_DATA_OFFSET (FIXME)
#define PCI1_CFG_ADDR_OFFSET (0x8300)
#define PCI1_CFG_DATA_OFFSET (0x8304)
#define PCI2_CFG_ADDR_OFFSET (FIXME)
#define PCI2_CFG_DATA_OFFSET (FIXME)
#endif
#define PCI2_CFG_ADDR_OFFSET (0x8380)
#define PCI2_CFG_DATA_OFFSET (0x8384)
/* Serial Config */
#ifdef CONFIG_SERIAL_MANY_PORTS
......
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