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[PATCH] mips: update VR41xx CPU-PCI bridge support 

This patch updates NEC VR4100 series CPU-PCI bridge support.

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Yoichi Yuasa 2005-04-16 15:24:40 -07:00 committed by Linus Torvalds
parent 4bfa437cf1
commit 5dfa9c1b4f
5 changed files with 181 additions and 142 deletions
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6
arch/mips/pci/ops-vr41xx.c
View File

@ -3,7 +3,7 @@
*
* Copyright (C) 2001-2003 MontaVista Software Inc.
* Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com>
* Copyright (C) 2004 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
* Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
*
* 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
@ -29,8 +29,8 @@
#include <asm/io.h>
#define PCICONFDREG KSEG1ADDR(0x0f000c14)
#define PCICONFAREG KSEG1ADDR(0x0f000c18)
#define PCICONFDREG (void __iomem *)KSEG1ADDR(0x0f000c14)
#define PCICONFAREG (void __iomem *)KSEG1ADDR(0x0f000c18)
static inline int set_pci_configuration_address(unsigned char number,
unsigned int devfn, int where)

88
arch/mips/pci/pci-vr41xx.c
View File

@ -3,8 +3,8 @@
*
* Copyright (C) 2001-2003 MontaVista Software Inc.
* Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com>
* Copyright (C) 2004 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
* Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
*
* 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
@ -31,12 +31,18 @@
#include <asm/cpu.h>
#include <asm/io.h>
#include <asm/vr41xx/pci.h>
#include <asm/vr41xx/vr41xx.h>
#include "pci-vr41xx.h"
extern struct pci_ops vr41xx_pci_ops;
static void __iomem *pciu_base;
#define pciu_read(offset) readl(pciu_base + (offset))
#define pciu_write(offset, value) writel((value), pciu_base + (offset))
static struct pci_master_address_conversion pci_master_memory1 = {
.bus_base_address = PCI_MASTER_MEM1_BUS_BASE_ADDRESS,
.address_mask = PCI_MASTER_MEM1_ADDRESS_MASK,
@ -113,6 +119,15 @@ static int __init vr41xx_pciu_init(void)
setup = &vr41xx_pci_controller_unit_setup;
if (request_mem_region(PCIU_BASE, PCIU_SIZE, "PCIU") == NULL)
return -EBUSY;
pciu_base = ioremap(PCIU_BASE, PCIU_SIZE);
if (pciu_base == NULL) {
release_mem_region(PCIU_BASE, PCIU_SIZE);
return -EBUSY;
}
/* Disable PCI interrupt */
vr41xx_disable_pciint();
@ -129,14 +144,14 @@ static int __init vr41xx_pciu_init(void)
pci_clock_max = PCI_CLOCK_MAX;
vtclock = vr41xx_get_vtclock_frequency();
if (vtclock < pci_clock_max)
writel(EQUAL_VTCLOCK, PCICLKSELREG);
pciu_write(PCICLKSELREG, EQUAL_VTCLOCK);
else if ((vtclock / 2) < pci_clock_max)
writel(HALF_VTCLOCK, PCICLKSELREG);
pciu_write(PCICLKSELREG, HALF_VTCLOCK);
else if (current_cpu_data.processor_id >= PRID_VR4131_REV2_1 &&
(vtclock / 3) < pci_clock_max)
writel(ONE_THIRD_VTCLOCK, PCICLKSELREG);
pciu_write(PCICLKSELREG, ONE_THIRD_VTCLOCK);
else if ((vtclock / 4) < pci_clock_max)
writel(QUARTER_VTCLOCK, PCICLKSELREG);
pciu_write(PCICLKSELREG, QUARTER_VTCLOCK);
else {
printk(KERN_ERR "PCI Clock is over 33MHz.\n");
return -EINVAL;
@ -151,11 +166,11 @@ static int __init vr41xx_pciu_init(void)
MASTER_MSK(master->address_mask) |
WINEN |
PCIA(master->pci_base_address);
writel(val, PCIMMAW1REG);
pciu_write(PCIMMAW1REG, val);
} else {
val = readl(PCIMMAW1REG);
val = pciu_read(PCIMMAW1REG);
val &= ~WINEN;
writel(val, PCIMMAW1REG);
pciu_write(PCIMMAW1REG, val);
}
if (setup->master_memory2 != NULL) {
@ -164,11 +179,11 @@ static int __init vr41xx_pciu_init(void)
MASTER_MSK(master->address_mask) |
WINEN |
PCIA(master->pci_base_address);
writel(val, PCIMMAW2REG);
pciu_write(PCIMMAW2REG, val);
} else {
val = readl(PCIMMAW2REG);
val = pciu_read(PCIMMAW2REG);
val &= ~WINEN;
writel(val, PCIMMAW2REG);
pciu_write(PCIMMAW2REG, val);
}
if (setup->target_memory1 != NULL) {
@ -176,11 +191,11 @@ static int __init vr41xx_pciu_init(void)
val = TARGET_MSK(target->address_mask) |
WINEN |
ITA(target->bus_base_address);
writel(val, PCITAW1REG);
pciu_write(PCITAW1REG, val);
} else {
val = readl(PCITAW1REG);
val = pciu_read(PCITAW1REG);
val &= ~WINEN;
writel(val, PCITAW1REG);
pciu_write(PCITAW1REG, val);
}
if (setup->target_memory2 != NULL) {
@ -188,11 +203,11 @@ static int __init vr41xx_pciu_init(void)
val = TARGET_MSK(target->address_mask) |
WINEN |
ITA(target->bus_base_address);
writel(val, PCITAW2REG);
pciu_write(PCITAW2REG, val);
} else {
val = readl(PCITAW2REG);
val = pciu_read(PCITAW2REG);
val &= ~WINEN;
writel(val, PCITAW2REG);
pciu_write(PCITAW2REG, val);
}
if (setup->master_io != NULL) {
@ -201,50 +216,50 @@ static int __init vr41xx_pciu_init(void)
MASTER_MSK(master->address_mask) |
WINEN |
PCIIA(master->pci_base_address);
writel(val, PCIMIOAWREG);
pciu_write(PCIMIOAWREG, val);
} else {
val = readl(PCIMIOAWREG);
val = pciu_read(PCIMIOAWREG);
val &= ~WINEN;
writel(val, PCIMIOAWREG);
pciu_write(PCIMIOAWREG, val);
}
if (setup->exclusive_access == CANNOT_LOCK_FROM_DEVICE)
writel(UNLOCK, PCIEXACCREG);
pciu_write(PCIEXACCREG, UNLOCK);
else
writel(0, PCIEXACCREG);
pciu_write(PCIEXACCREG, 0);
if (current_cpu_data.cputype == CPU_VR4122)
writel(TRDYV(setup->wait_time_limit_from_irdy_to_trdy), PCITRDYVREG);
pciu_write(PCITRDYVREG, TRDYV(setup->wait_time_limit_from_irdy_to_trdy));
writel(MLTIM(setup->master_latency_timer), LATTIMEREG);
pciu_write(LATTIMEREG, MLTIM(setup->master_latency_timer));
if (setup->mailbox != NULL) {
mailbox = setup->mailbox;
val = MBADD(mailbox->base_address) | TYPE_32BITSPACE |
MSI_MEMORY | PREF_APPROVAL;
writel(val, MAILBAREG);
pciu_write(MAILBAREG, val);
}
if (setup->target_window1) {
window = setup->target_window1;
val = PMBA(window->base_address) | TYPE_32BITSPACE |
MSI_MEMORY | PREF_APPROVAL;
writel(val, PCIMBA1REG);
pciu_write(PCIMBA1REG, val);
}
if (setup->target_window2) {
window = setup->target_window2;
val = PMBA(window->base_address) | TYPE_32BITSPACE |
MSI_MEMORY | PREF_APPROVAL;
writel(val, PCIMBA2REG);
pciu_write(PCIMBA2REG, val);
}
val = readl(RETVALREG);
val = pciu_read(RETVALREG);
val &= ~RTYVAL_MASK;
val |= RTYVAL(setup->retry_limit);
writel(val, RETVALREG);
pciu_write(RETVALREG, val);
val = readl(PCIAPCNTREG);
val = pciu_read(PCIAPCNTREG);
val &= ~(TKYGNT | PAPC);
switch (setup->arbiter_priority_control) {
@ -262,15 +277,16 @@ static int __init vr41xx_pciu_init(void)
if (setup->take_away_gnt_mode == PCI_TAKE_AWAY_GNT_ENABLE)
val |= TKYGNT_ENABLE;
writel(val, PCIAPCNTREG);
pciu_write(PCIAPCNTREG, val);
writel(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
PCI_COMMAND_PARITY | PCI_COMMAND_SERR, COMMANDREG);
pciu_write(COMMANDREG, PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
PCI_COMMAND_MASTER | PCI_COMMAND_PARITY |
PCI_COMMAND_SERR);
/* Clear bus error */
readl(BUSERRADREG);
pciu_read(BUSERRADREG);
writel(BLOODY_CONFIG_DONE, PCIENREG);
pciu_write(PCIENREG, PCIU_CONFIG_DONE);
if (setup->mem_resource != NULL)
vr41xx_pci_controller.mem_resource = setup->mem_resource;

69
arch/mips/pci/pci-vr41xx.h
View File

@ -3,7 +3,7 @@
*
* Copyright (C) 2002 MontaVista Software Inc.
* Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com>
* Copyright (C) 2004 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
* Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
*
* 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
@ -22,11 +22,14 @@
#ifndef __PCI_VR41XX_H
#define __PCI_VR41XX_H
#define PCIMMAW1REG KSEG1ADDR(0x0f000c00)
#define PCIMMAW2REG KSEG1ADDR(0x0f000c04)
#define PCITAW1REG KSEG1ADDR(0x0f000c08)
#define PCITAW2REG KSEG1ADDR(0x0f000c0c)
#define PCIMIOAWREG KSEG1ADDR(0x0f000c10)
#define PCIU_BASE 0x0f000c00UL
#define PCIU_SIZE 0x200UL
#define PCIMMAW1REG 0x00
#define PCIMMAW2REG 0x04
#define PCITAW1REG 0x08
#define PCITAW2REG 0x0c
#define PCIMIOAWREG 0x10
#define IBA(addr) ((addr) & 0xff000000U)
#define MASTER_MSK(mask) (((mask) >> 11) & 0x000fe000U)
#define PCIA(addr) (((addr) >> 24) & 0x000000ffU)
@ -34,13 +37,13 @@
#define ITA(addr) (((addr) >> 24) & 0x000000ffU)
#define PCIIA(addr) (((addr) >> 24) & 0x000000ffU)
#define WINEN 0x1000U
#define PCICONFDREG KSEG1ADDR(0x0f000c14)
#define PCICONFAREG KSEG1ADDR(0x0f000c18)
#define PCIMAILREG KSEG1ADDR(0x0f000c1c)
#define BUSERRADREG KSEG1ADDR(0x0f000c24)
#define PCICONFDREG 0x14
#define PCICONFAREG 0x18
#define PCIMAILREG 0x1c
#define BUSERRADREG 0x24
#define EA(reg) ((reg) &0xfffffffc)
#define INTCNTSTAREG KSEG1ADDR(0x0f000c28)
#define INTCNTSTAREG 0x28
#define MABTCLR 0x80000000U
#define TRDYCLR 0x40000000U
#define PARCLR 0x20000000U
@ -67,34 +70,34 @@
#define MABORT 0x00000002U
#define TABORT 0x00000001U
#define PCIEXACCREG KSEG1ADDR(0x0f000c2c)
#define PCIEXACCREG 0x2c
#define UNLOCK 0x2U
#define EAREQ 0x1U
#define PCIRECONTREG KSEG1ADDR(0x0f000c30)
#define PCIRECONTREG 0x30
#define RTRYCNT(reg) ((reg) & 0x000000ffU)
#define PCIENREG KSEG1ADDR(0x0f000c34)
#define BLOODY_CONFIG_DONE 0x4U
#define PCICLKSELREG KSEG1ADDR(0x0f000c38)
#define PCIENREG 0x34
#define PCIU_CONFIG_DONE 0x4U
#define PCICLKSELREG 0x38
#define EQUAL_VTCLOCK 0x2U
#define HALF_VTCLOCK 0x0U
#define ONE_THIRD_VTCLOCK 0x3U
#define QUARTER_VTCLOCK 0x1U
#define PCITRDYVREG KSEG1ADDR(0x0f000c3c)
#define PCITRDYVREG 0x3c
#define TRDYV(val) ((uint32_t)(val) & 0xffU)
#define PCICLKRUNREG KSEG1ADDR(0x0f000c60)
#define PCICLKRUNREG 0x60
#define VENDORIDREG KSEG1ADDR(0x0f000d00)
#define DEVICEIDREG KSEG1ADDR(0x0f000d00)
#define COMMANDREG KSEG1ADDR(0x0f000d04)
#define STATUSREG KSEG1ADDR(0x0f000d04)
#define REVIDREG KSEG1ADDR(0x0f000d08)
#define CLASSREG KSEG1ADDR(0x0f000d08)
#define CACHELSREG KSEG1ADDR(0x0f000d0c)
#define LATTIMEREG KSEG1ADDR(0x0f000d0c)
#define VENDORIDREG 0x100
#define DEVICEIDREG 0x100
#define COMMANDREG 0x104
#define STATUSREG 0x104
#define REVIDREG 0x108
#define CLASSREG 0x108
#define CACHELSREG 0x10c
#define LATTIMEREG 0x10c
#define MLTIM(val) (((uint32_t)(val) << 7) & 0xff00U)
#define MAILBAREG KSEG1ADDR(0x0f000d10)
#define PCIMBA1REG KSEG1ADDR(0x0f000d14)
#define PCIMBA2REG KSEG1ADDR(0x0f000d18)
#define MAILBAREG 0x110
#define PCIMBA1REG 0x114
#define PCIMBA2REG 0x118
#define MBADD(base) ((base) & 0xfffff800U)
#define PMBA(base) ((base) & 0xffe00000U)
#define PREF 0x8U
@ -104,10 +107,10 @@
#define TYPE_32BITSPACE 0x0U
#define MSI 0x1U
#define MSI_MEMORY 0x0U
#define INTLINEREG KSEG1ADDR(0x0f000d3c)
#define INTPINREG KSEG1ADDR(0x0f000d3c)
#define RETVALREG KSEG1ADDR(0x0f000d40)
#define PCIAPCNTREG KSEG1ADDR(0x0f000d40)
#define INTLINEREG 0x13c
#define INTPINREG 0x13c
#define RETVALREG 0x140
#define PCIAPCNTREG 0x140
#define TKYGNT 0x04000000U
#define TKYGNT_ENABLE 0x04000000U
#define TKYGNT_DISABLE 0x00000000U

90
include/asm-mips/vr41xx/pci.h Normal file
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@ -0,0 +1,90 @@
/*
* Include file for NEC VR4100 series PCI Control Unit.
*
* Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __NEC_VR41XX_PCI_H
#define __NEC_VR41XX_PCI_H
#define PCI_MASTER_ADDRESS_MASK 0x7fffffffU
struct pci_master_address_conversion {
uint32_t bus_base_address;
uint32_t address_mask;
uint32_t pci_base_address;
};
struct pci_target_address_conversion {
uint32_t address_mask;
uint32_t bus_base_address;
};
typedef enum {
CANNOT_LOCK_FROM_DEVICE,
CAN_LOCK_FROM_DEVICE,
} pci_exclusive_access_t;
struct pci_mailbox_address {
uint32_t base_address;
};
struct pci_target_address_window {
uint32_t base_address;
};
typedef enum {
PCI_ARBITRATION_MODE_FAIR,
PCI_ARBITRATION_MODE_ALTERNATE_0,
PCI_ARBITRATION_MODE_ALTERNATE_B,
} pci_arbiter_priority_control_t;
typedef enum {
PCI_TAKE_AWAY_GNT_DISABLE,
PCI_TAKE_AWAY_GNT_ENABLE,
} pci_take_away_gnt_mode_t;
struct pci_controller_unit_setup {
struct pci_master_address_conversion *master_memory1;
struct pci_master_address_conversion *master_memory2;
struct pci_target_address_conversion *target_memory1;
struct pci_target_address_conversion *target_memory2;
struct pci_master_address_conversion *master_io;
pci_exclusive_access_t exclusive_access;
uint32_t pci_clock_max;
uint8_t wait_time_limit_from_irdy_to_trdy; /* Only VR4122 is supported */
struct pci_mailbox_address *mailbox;
struct pci_target_address_window *target_window1;
struct pci_target_address_window *target_window2;
uint8_t master_latency_timer;
uint8_t retry_limit;
pci_arbiter_priority_control_t arbiter_priority_control;
pci_take_away_gnt_mode_t take_away_gnt_mode;
struct resource *mem_resource;
struct resource *io_resource;
};
extern void vr41xx_pciu_setup(struct pci_controller_unit_setup *setup);
#endif /* __NEC_VR41XX_PCI_H */

70
include/asm-mips/vr41xx/vr41xx.h
View File

@ -231,74 +231,4 @@ enum {
DATA_HIGH
};
/*
* PCI Control Unit
*/
#define PCI_MASTER_ADDRESS_MASK 0x7fffffffU
struct pci_master_address_conversion {
uint32_t bus_base_address;
uint32_t address_mask;
uint32_t pci_base_address;
};
struct pci_target_address_conversion {
uint32_t address_mask;
uint32_t bus_base_address;
};
typedef enum {
CANNOT_LOCK_FROM_DEVICE,
CAN_LOCK_FROM_DEVICE,
} pci_exclusive_access_t;
struct pci_mailbox_address {
uint32_t base_address;
};
struct pci_target_address_window {
uint32_t base_address;
};
typedef enum {
PCI_ARBITRATION_MODE_FAIR,
PCI_ARBITRATION_MODE_ALTERNATE_0,
PCI_ARBITRATION_MODE_ALTERNATE_B,
} pci_arbiter_priority_control_t;
typedef enum {
PCI_TAKE_AWAY_GNT_DISABLE,
PCI_TAKE_AWAY_GNT_ENABLE,
} pci_take_away_gnt_mode_t;
struct pci_controller_unit_setup {
struct pci_master_address_conversion *master_memory1;
struct pci_master_address_conversion *master_memory2;
struct pci_target_address_conversion *target_memory1;
struct pci_target_address_conversion *target_memory2;
struct pci_master_address_conversion *master_io;
pci_exclusive_access_t exclusive_access;
uint32_t pci_clock_max;
uint8_t wait_time_limit_from_irdy_to_trdy; /* Only VR4122 is supported */
struct pci_mailbox_address *mailbox;
struct pci_target_address_window *target_window1;
struct pci_target_address_window *target_window2;
uint8_t master_latency_timer;
uint8_t retry_limit;
pci_arbiter_priority_control_t arbiter_priority_control;
pci_take_away_gnt_mode_t take_away_gnt_mode;
struct resource *mem_resource;
struct resource *io_resource;
};
extern void vr41xx_pciu_setup(struct pci_controller_unit_setup *setup);
#endif /* __NEC_VR41XX_H */