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cleanup ifxmips pci code

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SVN-Revision: 11531
This commit is contained in:
John Crispin 2008-06-17 22:44:38 +00:00
parent 18ad6da063
commit e2b679fd3f
4 changed files with 160 additions and 174 deletions
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1
target/linux/ifxmips/files/arch/mips/ifxmips/Makefile
View file

@ -1,2 +1 @@
obj-y := reset.o prom.o setup.o interrupt.o dma-core.o pmu.o board.o cgu.o gptu.o
obj-$(CONFIG_PCI) += pci.o

119
target/linux/ifxmips/files/arch/mips/pci/ops-ifxmips.c Normal file
View file

@ -0,0 +1,119 @@
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/mm.h>
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_irq.h>
#include <asm/addrspace.h>
#include <linux/vmalloc.h>
#define IFXMIPS_PCI_CFG_BUSNUM_SHF 16
#define IFXMIPS_PCI_CFG_DEVNUM_SHF 11
#define IFXMIPS_PCI_CFG_FUNNUM_SHF 8
#define PCI_ACCESS_READ 0
#define PCI_ACCESS_WRITE 1
extern u32 ifxmips_pci_mapped_cfg;
static int
ifxmips_pci_config_access(unsigned char access_type,
struct pci_bus *bus, unsigned int devfn, unsigned int where, u32 *data)
{
unsigned long cfg_base;
unsigned long flags;
u32 temp;
/* IFXMips support slot from 0 to 15 */
/* dev_fn 0&0x68 (AD29) is ifxmips itself */
if ((bus->number != 0) || ((devfn & 0xf8) > 0x78)
|| ((devfn & 0xf8) == 0) || ((devfn & 0xf8) == 0x68))
return 1;
local_irq_save(flags);
cfg_base = ifxmips_pci_mapped_cfg;
cfg_base |= (bus->number << IFXMIPS_PCI_CFG_BUSNUM_SHF) | (devfn <<
IFXMIPS_PCI_CFG_FUNNUM_SHF) | (where & ~0x3);
/* Perform access */
if (access_type == PCI_ACCESS_WRITE)
{
#ifdef CONFIG_SWAP_IO_SPACE
ifxmips_w32(swab32(*data), ((u32*)cfg_base));
#else
ifxmips_w32(*data, ((u32*)cfg_base));
#endif
} else {
*data = ifxmips_r32(((u32*)(cfg_base)));
#ifdef CONFIG_SWAP_IO_SPACE
*data = swab32(*data);
#endif
}
wmb();
/* clean possible Master abort */
cfg_base = (ifxmips_pci_mapped_cfg | (0x0 << IFXMIPS_PCI_CFG_FUNNUM_SHF)) + 4;
temp = ifxmips_r32(((u32*)(cfg_base)));
#ifdef CONFIG_SWAP_IO_SPACE
temp = swab32 (temp);
#endif
cfg_base = (ifxmips_pci_mapped_cfg | (0x68 << IFXMIPS_PCI_CFG_FUNNUM_SHF)) + 4;
ifxmips_w32(temp, ((u32*)cfg_base));
local_irq_restore(flags);
if (((*data) == 0xffffffff) && (access_type == PCI_ACCESS_READ))
return 1;
return 0;
}
int
ifxmips_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 * val)
{
u32 data = 0;
if (ifxmips_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
if (size == 1)
*val = (data >> ((where & 3) << 3)) & 0xff;
else if (size == 2)
*val = (data >> ((where & 3) << 3)) & 0xffff;
else
*val = data;
return PCIBIOS_SUCCESSFUL;
}
int
ifxmips_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 val)
{
u32 data = 0;
if (size == 4)
{
data = val;
} else {
if (ifxmips_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
if (size == 1)
data = (data & ~(0xff << ((where & 3) << 3))) |
(val << ((where & 3) << 3));
else if (size == 2)
data = (data & ~(0xffff << ((where & 3) << 3))) |
(val << ((where & 3) << 3));
}
if (ifxmips_pci_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
return PCIBIOS_SUCCESSFUL;
}

169
target/linux/ifxmips/files/arch/mips/ifxmips/pci.c → target/linux/ifxmips/files/arch/mips/pci/pci-ifxmips.c
View file

@ -14,17 +14,8 @@
#define IFXMIPS_PCI_IO_BASE 0x1AE00000
#define IFXMIPS_PCI_IO_SIZE 0x00200000
#define IFXMIPS_PCI_CFG_BUSNUM_SHF 16
#define IFXMIPS_PCI_CFG_DEVNUM_SHF 11
#define IFXMIPS_PCI_CFG_FUNNUM_SHF 8
#define PCI_ACCESS_READ 0
#define PCI_ACCESS_WRITE 1
#define CONFIG_IFXMIPS_PCI_HW_SWAP 1
static int ifxmips_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
static int ifxmips_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
extern int ifxmips_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
extern int ifxmips_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
struct pci_ops ifxmips_pci_ops = {
.read = ifxmips_pci_read_config_dword,
@ -53,112 +44,12 @@ static struct pci_controller ifxmips_pci_controller = {
.io_offset = 0x00000000UL,
};
static u32 ifxmips_pci_mapped_cfg;
static int
ifxmips_pci_config_access(unsigned char access_type,
struct pci_bus *bus, unsigned int devfn, unsigned int where, u32 *data)
{
unsigned long cfg_base;
unsigned long flags;
u32 temp;
/* IFXMips support slot from 0 to 15 */
/* dev_fn 0&0x68 (AD29) is ifxmips itself */
if ((bus->number != 0) || ((devfn & 0xf8) > 0x78)
|| ((devfn & 0xf8) == 0) || ((devfn & 0xf8) == 0x68))
return 1;
local_irq_save(flags);
cfg_base = ifxmips_pci_mapped_cfg;
cfg_base |= (bus->number << IFXMIPS_PCI_CFG_BUSNUM_SHF) | (devfn <<
IFXMIPS_PCI_CFG_FUNNUM_SHF) | (where & ~0x3);
/* Perform access */
if (access_type == PCI_ACCESS_WRITE)
{
#ifdef CONFIG_IFXMIPS_PCI_HW_SWAP
ifxmips_w32(swab32(*data), ((u32*)cfg_base));
#else
ifxmips_w32(*data, ((u32*)cfg_base));
#endif
} else {
*data = ifxmips_r32(((u32*)(cfg_base)));
#ifdef CONFIG_IFXMIPS_PCI_HW_SWAP
*data = swab32(*data);
#endif
}
wmb();
/* clean possible Master abort */
cfg_base = (ifxmips_pci_mapped_cfg | (0x0 << IFXMIPS_PCI_CFG_FUNNUM_SHF)) + 4;
temp = ifxmips_r32(((u32*)(cfg_base)));
#ifdef CONFIG_IFXMIPS_PCI_HW_SWAP
temp = swab32 (temp);
#endif
cfg_base = (ifxmips_pci_mapped_cfg | (0x68 << IFXMIPS_PCI_CFG_FUNNUM_SHF)) + 4;
ifxmips_w32(temp, ((u32*)cfg_base));
local_irq_restore(flags);
if (((*data) == 0xffffffff) && (access_type == PCI_ACCESS_READ))
return 1;
return 0;
}
static int ifxmips_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 * val)
{
u32 data = 0;
if (ifxmips_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
if (size == 1)
*val = (data >> ((where & 3) << 3)) & 0xff;
else if (size == 2)
*val = (data >> ((where & 3) << 3)) & 0xffff;
else
*val = data;
return PCIBIOS_SUCCESSFUL;
}
static int ifxmips_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 val)
{
u32 data = 0;
if (size == 4)
{
data = val;
} else {
if (ifxmips_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
if (size == 1)
data = (data & ~(0xff << ((where & 3) << 3))) |
(val << ((where & 3) << 3));
else if (size == 2)
data = (data & ~(0xffff << ((where & 3) << 3))) |
(val << ((where & 3) << 3));
}
if (ifxmips_pci_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
return PCIBIOS_DEVICE_NOT_FOUND;
return PCIBIOS_SUCCESSFUL;
}
u32 ifxmips_pci_mapped_cfg;
int pcibios_plat_dev_init(struct pci_dev *dev){
u8 pin;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
switch(pin) {
case 0:
break;
@ -175,43 +66,24 @@ int pcibios_plat_dev_init(struct pci_dev *dev){
printk ("WARNING: invalid interrupt pin %d\n", pin);
return 1;
}
return 0;
}
static void __init ifxmips_pci_startup (void){
/*initialize the first PCI device--ifxmips itself */
u32 temp_buffer;
/*TODO: trigger reset */
ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) & ~0xf00000, IFXMIPS_CGU_IFCCR);
ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) | 0x800000, IFXMIPS_CGU_IFCCR);
/* PCIS of IF_CLK of CGU : 1 =>PCI Clock output
0 =>clock input
PADsel of PCI_CR of CGU : 1 =>From CGU
: 0 =>From pad
*/
ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) | (1 << 16), IFXMIPS_CGU_IFCCR);
ifxmips_w32((1 << 31) | (1 << 30), IFXMIPS_CGU_PCICR);
/* prepare GPIO */
/* PCI_RST: P1.5 ALT 01 */
//pliu20060613: start
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_OUT) | (1 << 5), IFXMIPS_GPIO_P1_OUT);
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_OD) | (1 << 5), IFXMIPS_GPIO_P1_OD);
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_DIR) | (1 << 5), IFXMIPS_GPIO_P1_DIR);
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_ALTSEL1) & ~(1 << 5), IFXMIPS_GPIO_P1_ALTSEL1);
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_ALTSEL0) & ~(1 << 5), IFXMIPS_GPIO_P1_ALTSEL0);
//pliu20060613: end
/* PCI_REQ1: P1.13 ALT 01 */
/* PCI_GNT1: P1.14 ALT 01 */
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_DIR) & ~0x2000, IFXMIPS_GPIO_P1_DIR);
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_DIR) | 0x4000, IFXMIPS_GPIO_P1_DIR);
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_ALTSEL1) & ~0x6000, IFXMIPS_GPIO_P1_ALTSEL1);
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_ALTSEL0) | 0x6000, IFXMIPS_GPIO_P1_ALTSEL0);
/* PCI_REQ2: P1.15 ALT 10 */
/* PCI_GNT2: P1.7 ALT 10 */
/* enable auto-switching between PCI and EBU */
ifxmips_w32(0xa, PCI_CR_CLK_CTRL);
/* busy, i.e. configuration is not done, PCI access has to be retried */
@ -220,8 +92,8 @@ static void __init ifxmips_pci_startup (void){
/* BUS Master/IO/MEM access */
ifxmips_w32(ifxmips_r32(PCI_CS_STS_CMD) | 7, PCI_CS_STS_CMD);
temp_buffer = ifxmips_r32(PCI_CR_PC_ARB);
/* enable external 2 PCI masters */
temp_buffer = ifxmips_r32(PCI_CR_PC_ARB);
temp_buffer &= (~(0xf << 16));
/* enable internal arbiter */
temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT);
@ -234,12 +106,8 @@ static void __init ifxmips_pci_startup (void){
/* enable all external masters request */
temp_buffer &= (~(3 << PCI_MASTER2_REQ_MASK_2BITS));
ifxmips_w32(temp_buffer, PCI_CR_PC_ARB);
wmb ();
/* FPI ==> PCI MEM address mapping */
/* base: 0xb8000000 == > 0x18000000 */
/* size: 8x4M = 32M */
ifxmips_w32(0x18000000, PCI_CR_FCI_ADDR_MAP0);
ifxmips_w32(0x18400000, PCI_CR_FCI_ADDR_MAP1);
ifxmips_w32(0x18800000, PCI_CR_FCI_ADDR_MAP2);
@ -248,20 +116,11 @@ static void __init ifxmips_pci_startup (void){
ifxmips_w32(0x19400000, PCI_CR_FCI_ADDR_MAP5);
ifxmips_w32(0x19800000, PCI_CR_FCI_ADDR_MAP6);
ifxmips_w32(0x19c00000, PCI_CR_FCI_ADDR_MAP7);
/* FPI ==> PCI IO address mapping */
/* base: 0xbAE00000 == > 0xbAE00000 */
/* size: 2M */
ifxmips_w32(0x1ae00000, PCI_CR_FCI_ADDR_MAP11hg);
/* PCI ==> FPI address mapping */
/* base: 0x0 ==> 0x0 */
/* size: 32M */
/* BAR1 32M map to SDR address */
ifxmips_w32(0x0e000008, PCI_CR_BAR11MASK);
ifxmips_w32(0, PCI_CR_PCI_ADDR_MAP11);
ifxmips_w32(0, PCI_CS_BASE_ADDR1);
#ifdef CONFIG_IFXMIPS_PCI_HW_SWAP
#ifdef CONFIG_SWAP_IO_SPACE
/* both TX and RX endian swap are enabled */
ifxmips_w32(ifxmips_r32(PCI_CR_PCI_EOI) | 3, PCI_CR_PCI_EOI);
wmb ();
@ -269,14 +128,13 @@ static void __init ifxmips_pci_startup (void){
/*TODO: disable BAR2 & BAR3 - why was this in the origianl infineon code */
ifxmips_w32(ifxmips_r32(PCI_CR_BAR12MASK) | 0x80000000, PCI_CR_BAR12MASK);
ifxmips_w32(ifxmips_r32(PCI_CR_BAR13MASK) | 0x80000000, PCI_CR_BAR13MASK);
/*use 8 dw burse length */
/*use 8 dw burst length */
ifxmips_w32(0x303, PCI_CR_FCI_BURST_LENGTH);
ifxmips_w32(ifxmips_r32(PCI_CR_PCI_MOD) | (1 << 24), PCI_CR_PCI_MOD);
wmb();
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_OUT) & ~(1 << 5), IFXMIPS_GPIO_P1_OUT);
wmb();
mdelay (1);
mdelay(1);
ifxmips_w32(ifxmips_r32(IFXMIPS_GPIO_P1_OUT) | (1 << 5), IFXMIPS_GPIO_P1_OUT);
}
@ -287,7 +145,6 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin){
return (INT_NUM_IM1_IRL0 + 17);
case 14:
/* IDSEL = AD30 --> mini PCI connector */
//return (INT_NUM_IM1_IRL0 + 14);
return (INT_NUM_IM0_IRL0 + 22);
default:
printk("Warning: no IRQ found for PCI device in slot %d, pin %d\n", slot, pin);
@ -300,19 +157,13 @@ int pcibios_init(void){
pci_probe_only = 0;
printk ("PCI: Probing PCI hardware on host bus 0.\n");
ifxmips_pci_startup ();
// IFXMIPS_PCI_REG32(PCI_CR_CLK_CTRL_REG) &= (~8);
ifxmips_pci_mapped_cfg = ioremap_nocache(0x17000000, 0x800 * 16);
printk("IFXMips PCI mapped to 0x%08X\n", (unsigned long)ifxmips_pci_mapped_cfg);
ifxmips_pci_mapped_cfg = (u32)ioremap_nocache(0x17000000, 0x800 * 16);
printk("IFXMips PCI mapped to 0x%08lX\n", (unsigned long)ifxmips_pci_mapped_cfg);
ifxmips_pci_controller.io_map_base = (unsigned long)ioremap(IFXMIPS_PCI_IO_BASE, IFXMIPS_PCI_IO_SIZE - 1);
printk("IFXMips PCI I/O mapped to 0x%08X\n", (unsigned long)ifxmips_pci_controller.io_map_base);
printk("IFXMips PCI I/O mapped to 0x%08lX\n", (unsigned long)ifxmips_pci_controller.io_map_base);
register_pci_controller(&ifxmips_pci_controller);
return 0;
}

45
target/linux/ifxmips/patches/100-board.patch
View file

@ -1,5 +1,7 @@
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
Index: linux-2.6.25.7/arch/mips/Kconfig
===================================================================
--- linux-2.6.25.7.orig/arch/mips/Kconfig 2008-06-18 00:28:54.000000000 +0200
+++ linux-2.6.25.7/arch/mips/Kconfig 2008-06-18 00:35:50.000000000 +0200
@@ -78,6 +78,21 @@
select SYS_SUPPORTS_LITTLE_ENDIAN
select GENERIC_HARDIRQS_NO__DO_IRQ
@ -16,7 +18,7 @@
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select SYS_HAS_EARLY_PRINTK
+ select HW_HAS_PCI
+ select GENERIC_GPIO
+ select GENERIC_GPIO
+ select SWAP_IO_SPACE
+
config MACH_DECSTATION
@ -30,24 +32,28 @@
endmenu
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -282,6 +282,13 @@
cflags-$(CONFIG_MIPS_COBALT) += -Iinclude/asm-mips/mach-cobalt
Index: linux-2.6.25.7/arch/mips/Makefile
===================================================================
--- linux-2.6.25.7.orig/arch/mips/Makefile 2008-06-18 00:29:07.000000000 +0200
+++ linux-2.6.25.7/arch/mips/Makefile 2008-06-18 00:35:42.000000000 +0200
@@ -283,6 +283,13 @@
load-$(CONFIG_MIPS_COBALT) += 0xffffffff80080000
+#
#
+# Infineon IFXMIPS
+#
+#
+core-$(CONFIG_IFXMIPS) += arch/mips/ifxmips/
+cflags-$(CONFIG_IFXMIPS) += -Iinclude/asm-mips/mach-ifxmips
+load-$(CONFIG_IFXMIPS) += 0xffffffff80002000
+
#
+#
# DECstation family
#
--- a/include/asm-mips/bootinfo.h
+++ b/include/asm-mips/bootinfo.h
core-$(CONFIG_MACH_DECSTATION) += arch/mips/dec/
Index: linux-2.6.25.7/include/asm-mips/bootinfo.h
===================================================================
--- linux-2.6.25.7.orig/include/asm-mips/bootinfo.h 2008-06-18 00:28:54.000000000 +0200
+++ linux-2.6.25.7/include/asm-mips/bootinfo.h 2008-06-18 00:29:08.000000000 +0200
@@ -94,6 +94,12 @@
#define MACH_MSP7120_FPGA 5 /* PMC-Sierra MSP7120 Emulation */
#define MACH_MSP_OTHER 255 /* PMC-Sierra unknown board type */
@ -61,8 +67,10 @@
#define CL_SIZE COMMAND_LINE_SIZE
extern char *system_type;
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
Index: linux-2.6.25.7/arch/mips/kernel/traps.c
===================================================================
--- linux-2.6.25.7.orig/arch/mips/kernel/traps.c 2008-06-18 00:28:54.000000000 +0200
+++ linux-2.6.25.7/arch/mips/kernel/traps.c 2008-06-18 00:29:08.000000000 +0200
@@ -1379,6 +1379,7 @@
*/
if (cpu_has_mips_r2) {
@ -71,3 +79,12 @@
cp0_perfcount_irq = (read_c0_intctl() >> 26) & 7;
if (cp0_perfcount_irq == cp0_compare_irq)
cp0_perfcount_irq = -1;
Index: linux-2.6.25.7/arch/mips/pci/Makefile
===================================================================
--- linux-2.6.25.7.orig/arch/mips/pci/Makefile 2008-06-18 00:34:49.000000000 +0200
+++ linux-2.6.25.7/arch/mips/pci/Makefile 2008-06-18 00:35:03.000000000 +0200
@@ -48,3 +48,4 @@
obj-$(CONFIG_VICTOR_MPC30X) += fixup-mpc30x.o
obj-$(CONFIG_ZAO_CAPCELLA) += fixup-capcella.o
obj-$(CONFIG_WR_PPMC) += fixup-wrppmc.o
+obj-$(CONFIG_IFXMIPS) += pci-ifxmips.o ops-ifxmips.o