[patch 056/198] mips: update VR41xx CPU-PCI bridge support

From: akpm
Date: Tue Apr 12 2005 - 22:07:37 EST


From: Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>

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

Signed-off-by: Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---

25-akpm/arch/mips/pci/ops-vr41xx.c | 6 +-
25-akpm/arch/mips/pci/pci-vr41xx.c | 88 +++++++++++++++++-------------
25-akpm/arch/mips/pci/pci-vr41xx.h | 69 ++++++++++++-----------
25-akpm/include/asm-mips/vr41xx/pci.h | 90 +++++++++++++++++++++++++++++++
25-akpm/include/asm-mips/vr41xx/vr41xx.h | 70 ------------------------
5 files changed, 181 insertions(+), 142 deletions(-)

diff -puN arch/mips/pci/ops-vr41xx.c~mips-update-vr41xx-cpu-pci-bridge arch/mips/pci/ops-vr41xx.c
--- 25/arch/mips/pci/ops-vr41xx.c~mips-update-vr41xx-cpu-pci-bridge 2005-04-12 03:21:16.787584800 -0700
+++ 25-akpm/arch/mips/pci/ops-vr41xx.c 2005-04-12 03:21:16.795583584 -0700
@@ -3,7 +3,7 @@
*
* Copyright (C) 2001-2003 MontaVista Software Inc.
* Author: Yoichi Yuasa <yyuasa@xxxxxxxxxx or source@xxxxxxxxxx>
- * Copyright (C) 2004 Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>
+ * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>
*
* 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)
diff -puN arch/mips/pci/pci-vr41xx.c~mips-update-vr41xx-cpu-pci-bridge arch/mips/pci/pci-vr41xx.c
--- 25/arch/mips/pci/pci-vr41xx.c~mips-update-vr41xx-cpu-pci-bridge 2005-04-12 03:21:16.789584496 -0700
+++ 25-akpm/arch/mips/pci/pci-vr41xx.c 2005-04-12 03:21:16.796583432 -0700
@@ -3,8 +3,8 @@
*
* Copyright (C) 2001-2003 MontaVista Software Inc.
* Author: Yoichi Yuasa <yyuasa@xxxxxxxxxx or source@xxxxxxxxxx>
- * Copyright (C) 2004 Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>
- * Copyright (C) 2004 by Ralf Baechle (ralf@xxxxxxxxxxxxxx)
+ * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>
+ * Copyright (C) 2004 by Ralf Baechle (ralf@xxxxxxxxxxxxxx)
*
* 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;
diff -puN arch/mips/pci/pci-vr41xx.h~mips-update-vr41xx-cpu-pci-bridge arch/mips/pci/pci-vr41xx.h
--- 25/arch/mips/pci/pci-vr41xx.h~mips-update-vr41xx-cpu-pci-bridge 2005-04-12 03:21:16.790584344 -0700
+++ 25-akpm/arch/mips/pci/pci-vr41xx.h 2005-04-12 03:21:16.797583280 -0700
@@ -3,7 +3,7 @@
*
* Copyright (C) 2002 MontaVista Software Inc.
* Author: Yoichi Yuasa <yyuasa@xxxxxxxxxx or source@xxxxxxxxxx>
- * Copyright (C) 2004 Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>
+ * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>
*
* 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
diff -puN /dev/null include/asm-mips/vr41xx/pci.h
--- /dev/null 2003-09-15 06:40:47.000000000 -0700
+++ 25-akpm/include/asm-mips/vr41xx/pci.h 2005-04-12 03:21:16.798583128 -0700
@@ -0,0 +1,90 @@
+/*
+ * Include file for NEC VR4100 series PCI Control Unit.
+ *
+ * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx>
+ *
+ * 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 */
diff -puN include/asm-mips/vr41xx/vr41xx.h~mips-update-vr41xx-cpu-pci-bridge include/asm-mips/vr41xx/vr41xx.h
--- 25/include/asm-mips/vr41xx/vr41xx.h~mips-update-vr41xx-cpu-pci-bridge 2005-04-12 03:21:16.792584040 -0700
+++ 25-akpm/include/asm-mips/vr41xx/vr41xx.h 2005-04-12 03:21:16.798583128 -0700
@@ -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 */
_
-
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