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-rw-r--r--arch/mips/ddb5074/pci.c499
1 files changed, 258 insertions, 241 deletions
diff --git a/arch/mips/ddb5074/pci.c b/arch/mips/ddb5074/pci.c
index 1201b0ff4..aa27cd333 100644
--- a/arch/mips/ddb5074/pci.c
+++ b/arch/mips/ddb5074/pci.c
@@ -4,314 +4,326 @@
* Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
* Albert Dorofeev <albert@sonycom.com>
* Sony Software Development Center Europe (SDCE), Brussels
- *
- * $Id: pci.c,v 1.4 2000/02/18 00:02:17 ralf Exp $
*/
-
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/ioport.h>
-#include <asm-mips/nile4.h>
+
+#include <asm/nile4.h>
static u32 nile4_pre_pci_access0(int slot_num)
{
- u32 pci_addr = 0;
- u32 virt_addr = NILE4_PCI_CFG_BASE;
-
- /* Set window 1 address 8000000 - 64 bit - 2 MB (PCI config space) */
- nile4_set_pdar(NILE4_PCIW1, PHYSADDR(virt_addr), 0x00200000, 64, 0, 0);
- if (slot_num > 2)
- pci_addr = 0x00040000 << slot_num;
- else
- virt_addr += 0x00040000 << slot_num;
- nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_CFG, pci_addr);
- return virt_addr;
+ u32 pci_addr = 0;
+ u32 virt_addr = NILE4_PCI_CFG_BASE;
+
+ /* Set window 1 address 8000000 - 64 bit - 2 MB (PCI config space) */
+ nile4_set_pdar(NILE4_PCIW1, PHYSADDR(virt_addr), 0x00200000, 64, 0,
+ 0);
+ if (slot_num > 2)
+ pci_addr = 0x00040000 << slot_num;
+ else
+ virt_addr += 0x00040000 << slot_num;
+ nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_CFG, pci_addr);
+ return virt_addr;
}
static void nile4_post_pci_access0(void)
{
- /* Set window 1 back to address 8000000 - 64 bit - 128 MB (PCI IO space) */
- nile4_set_pdar(NILE4_PCIW1, PHYSADDR(NILE4_PCI_MEM_BASE), 0x08000000, 64,
- 1, 1);
- nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_MEM, 0);
+ /*
+ * Set window 1 back to address 8000000 - 64 bit - 128 MB
+ * (PCI IO space)
+ */
+ nile4_set_pdar(NILE4_PCIW1, PHYSADDR(NILE4_PCI_MEM_BASE),
+ 0x08000000, 64, 1, 1);
+ nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_MEM, 0);
}
-static int nile4_pci_read_config_dword( struct pci_dev *dev,
- int where, u32 *val)
+static int nile4_pci_read_config_dword(struct pci_dev *dev,
+ int where, u32 * val)
{
- int slot_num, func_num;
- u32 base;
-
- /*
- * For starters let's do configuration cycle 0 only (one bus only)
- */
- if (dev->bus->number)
- return PCIBIOS_FUNC_NOT_SUPPORTED;
-
- slot_num = PCI_SLOT(dev->devfn);
- func_num = PCI_FUNC(dev->devfn);
- if (slot_num == 5) {
+ int slot_num, func_num;
+ u32 base;
+
/*
- * This is Nile 4 and it will crash if we access it like other
- * devices
+ * For starters let's do configuration cycle 0 only (one bus only)
*/
- *val = nile4_in32(NILE4_PCI_BASE + where);
+ if (dev->bus->number)
+ return PCIBIOS_FUNC_NOT_SUPPORTED;
+
+ slot_num = PCI_SLOT(dev->devfn);
+ func_num = PCI_FUNC(dev->devfn);
+ if (slot_num == 5) {
+ /*
+ * This is Nile 4 and it will crash if we access it like other
+ * devices
+ */
+ *val = nile4_in32(NILE4_PCI_BASE + where);
+ return PCIBIOS_SUCCESSFUL;
+ }
+ base = nile4_pre_pci_access0(slot_num);
+ *val =
+ *((volatile u32 *) (base + (func_num << 8) + (where & 0xfc)));
+ nile4_post_pci_access0();
return PCIBIOS_SUCCESSFUL;
- }
- base = nile4_pre_pci_access0(slot_num);
- *val = *((volatile u32 *)(base + (func_num << 8) + (where & 0xfc)));
- nile4_post_pci_access0();
- return PCIBIOS_SUCCESSFUL;
}
static int nile4_pci_write_config_dword(struct pci_dev *dev, int where,
u32 val)
{
- int slot_num, func_num;
- u32 base;
-
- /*
- * For starters let's do configuration cycle 0 only (one bus only)
- */
- if (dev->bus->number)
- return PCIBIOS_FUNC_NOT_SUPPORTED;
-
- slot_num = PCI_SLOT(dev->devfn);
- func_num = PCI_FUNC(dev->devfn);
- if (slot_num == 5) {
+ int slot_num, func_num;
+ u32 base;
+
/*
- * This is Nile 4 and it will crash if we access it like other
- * devices
+ * For starters let's do configuration cycle 0 only (one bus only)
*/
- nile4_out32(NILE4_PCI_BASE + where, val);
+ if (dev->bus->number)
+ return PCIBIOS_FUNC_NOT_SUPPORTED;
+
+ slot_num = PCI_SLOT(dev->devfn);
+ func_num = PCI_FUNC(dev->devfn);
+ if (slot_num == 5) {
+ /*
+ * This is Nile 4 and it will crash if we access it like other
+ * devices
+ */
+ nile4_out32(NILE4_PCI_BASE + where, val);
+ return PCIBIOS_SUCCESSFUL;
+ }
+ base = nile4_pre_pci_access0(slot_num);
+ *((volatile u32 *) (base + (func_num << 8) + (where & 0xfc))) =
+ val;
+ nile4_post_pci_access0();
return PCIBIOS_SUCCESSFUL;
- }
- base = nile4_pre_pci_access0(slot_num);
- *((volatile u32 *)(base + (func_num << 8) + (where & 0xfc))) = val;
- nile4_post_pci_access0();
- return PCIBIOS_SUCCESSFUL;
}
-static int nile4_pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
+static int nile4_pci_read_config_word(struct pci_dev *dev, int where,
+ u16 * val)
{
- int status;
- u32 result;
-
- status = nile4_pci_read_config_dword(dev, where, &result);
- if (status != PCIBIOS_SUCCESSFUL)
- return status;
- if (where & 2)
- result >>= 16;
- *val = result & 0xffff;
- return PCIBIOS_SUCCESSFUL;
+ int status;
+ u32 result;
+
+ status = nile4_pci_read_config_dword(dev, where, &result);
+ if (status != PCIBIOS_SUCCESSFUL)
+ return status;
+ if (where & 2)
+ result >>= 16;
+ *val = result & 0xffff;
+ return PCIBIOS_SUCCESSFUL;
}
-static int nile4_pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
+static int nile4_pci_read_config_byte(struct pci_dev *dev, int where,
+ u8 * val)
{
- int status;
- u32 result;
-
- status = nile4_pci_read_config_dword(dev, where, &result);
- if (status != PCIBIOS_SUCCESSFUL)
- return status;
- if (where & 1)
- result >>= 8;
- if (where & 2)
- result >>= 16;
- *val = result & 0xff;
- return PCIBIOS_SUCCESSFUL;
+ int status;
+ u32 result;
+
+ status = nile4_pci_read_config_dword(dev, where, &result);
+ if (status != PCIBIOS_SUCCESSFUL)
+ return status;
+ if (where & 1)
+ result >>= 8;
+ if (where & 2)
+ result >>= 16;
+ *val = result & 0xff;
+ return PCIBIOS_SUCCESSFUL;
}
-static int nile4_pci_write_config_word(struct pci_dev *dev, int where, u16 val)
+static int nile4_pci_write_config_word(struct pci_dev *dev, int where,
+ u16 val)
{
- int status, shift = 0;
- u32 result;
-
- status = nile4_pci_read_config_dword(dev, where, &result);
- if (status != PCIBIOS_SUCCESSFUL)
- return status;
- if (where & 2)
- shift += 16;
- result &= ~(0xffff << shift);
- result |= val << shift;
- return nile4_pci_write_config_dword(dev, where, result);
+ int status, shift = 0;
+ u32 result;
+
+ status = nile4_pci_read_config_dword(dev, where, &result);
+ if (status != PCIBIOS_SUCCESSFUL)
+ return status;
+ if (where & 2)
+ shift += 16;
+ result &= ~(0xffff << shift);
+ result |= val << shift;
+ return nile4_pci_write_config_dword(dev, where, result);
}
-static int nile4_pci_write_config_byte( struct pci_dev *dev, int where, u8 val)
+static int nile4_pci_write_config_byte(struct pci_dev *dev, int where,
+ u8 val)
{
- int status, shift = 0;
- u32 result;
-
- status = nile4_pci_read_config_dword(dev, where, &result);
- if (status != PCIBIOS_SUCCESSFUL)
- return status;
- if (where & 2)
- shift += 16;
- if (where & 1)
- shift += 8;
- result &= ~(0xff << shift);
- result |= val << shift;
- return nile4_pci_write_config_dword(dev, where, result);
+ int status, shift = 0;
+ u32 result;
+
+ status = nile4_pci_read_config_dword(dev, where, &result);
+ if (status != PCIBIOS_SUCCESSFUL)
+ return status;
+ if (where & 2)
+ shift += 16;
+ if (where & 1)
+ shift += 8;
+ result &= ~(0xff << shift);
+ result |= val << shift;
+ return nile4_pci_write_config_dword(dev, where, result);
}
struct pci_ops nile4_pci_ops = {
- nile4_pci_read_config_byte,
- nile4_pci_read_config_word,
- nile4_pci_read_config_dword,
- nile4_pci_write_config_byte,
- nile4_pci_write_config_word,
- nile4_pci_write_config_dword
+ nile4_pci_read_config_byte,
+ nile4_pci_read_config_word,
+ nile4_pci_read_config_dword,
+ nile4_pci_write_config_byte,
+ nile4_pci_write_config_word,
+ nile4_pci_write_config_dword
};
struct {
- struct resource ram;
- struct resource flash;
- struct resource isa_io;
- struct resource pci_io;
- struct resource isa_mem;
- struct resource pci_mem;
- struct resource nile4;
- struct resource boot;
+ struct resource ram;
+ struct resource flash;
+ struct resource isa_io;
+ struct resource pci_io;
+ struct resource isa_mem;
+ struct resource pci_mem;
+ struct resource nile4;
+ struct resource boot;
} ddb5074_resources = {
- { "RAM", 0x00000000, 0x03ffffff,
- IORESOURCE_MEM | PCI_BASE_ADDRESS_MEM_TYPE_64 },
- { "Flash ROM", 0x04000000, 0x043fffff },
- { "Nile4 ISA I/O", 0x06000000, 0x060fffff },
- { "Nile4 PCI I/O", 0x06100000, 0x07ffffff },
- { "Nile4 ISA mem", 0x08000000, 0x08ffffff, IORESOURCE_MEM },
- { "Nile4 PCI mem", 0x09000000, 0x0fffffff, IORESOURCE_MEM },
- { "Nile4 ctrl", 0x1fa00000, 0x1fbfffff,
- IORESOURCE_MEM | PCI_BASE_ADDRESS_MEM_TYPE_64 },
- { "Boot ROM", 0x1fc00000, 0x1fffffff }
+ { "RAM", 0x00000000, 0x03ffffff,
+ IORESOURCE_MEM | PCI_BASE_ADDRESS_MEM_TYPE_64},
+ { "Flash ROM", 0x04000000, 0x043fffff},
+ { "Nile4 ISA I/O", 0x06000000, 0x060fffff},
+ { "Nile4 PCI I/O", 0x06100000, 0x07ffffff},
+ { "Nile4 ISA mem", 0x08000000, 0x08ffffff, IORESOURCE_MEM},
+ { "Nile4 PCI mem", 0x09000000, 0x0fffffff, IORESOURCE_MEM},
+ { "Nile4 ctrl", 0x1fa00000, 0x1fbfffff,
+ IORESOURCE_MEM | PCI_BASE_ADDRESS_MEM_TYPE_64},
+ { "Boot ROM", 0x1fc00000, 0x1fffffff}
};
static void __init ddb5074_pci_fixup(void)
{
- struct pci_dev *dev;
-
- pci_for_each_dev(dev) {
- if (dev->vendor == PCI_VENDOR_ID_NEC &&
- dev->device == PCI_DEVICE_ID_NEC_NILE4) {
- /*
- * The first 64-bit PCI base register should point to the Nile4
- * control registers. Unfortunately this isn't the case, so we fix
- * it ourselves. This allows the serial driver to find the UART.
- */
- dev->resource[0] = ddb5074_resources.nile4;
- request_resource(&iomem_resource, &dev->resource[0]);
- /*
- * The second 64-bit PCI base register points to the first memory
- * bank. Unfortunately the address is wrong, so we fix it (again).
- */
- dev->resource[2] = ddb5074_resources.ram;
- request_resource(&iomem_resource, &dev->resource[2]);
- } else if (dev->vendor == PCI_VENDOR_ID_AL &&
- dev->device == PCI_DEVICE_ID_AL_M7101) {
- /*
- * It's nice to have the LEDs on the GPIO pins available for
- * debugging
- */
- extern struct pci_dev *pci_pmu;
- u8 t8;
-
- pci_pmu = dev; /* for LEDs D2 and D3 */
- /* Program the lines for LEDs D2 and D3 to output */
- nile4_pci_read_config_byte(dev, 0x7d, &t8);
- t8 |= 0xc0;
- nile4_pci_write_config_byte(dev, 0x7d, t8);
- /* Turn LEDs D2 and D3 off */
- nile4_pci_read_config_byte(dev, 0x7e, &t8);
- t8 |= 0xc0;
- nile4_pci_write_config_byte(dev, 0x7e, t8);
+ struct pci_dev *dev;
+
+ pci_for_each_dev(dev) {
+ if (dev->vendor == PCI_VENDOR_ID_NEC &&
+ dev->device == PCI_DEVICE_ID_NEC_NILE4) {
+ /*
+ * The first 64-bit PCI base register should point to
+ * the Nile4 control registers. Unfortunately this
+ * isn't the case, so we fix it ourselves. This allows
+ * the serial driver to find the UART.
+ */
+ dev->resource[0] = ddb5074_resources.nile4;
+ request_resource(&iomem_resource,
+ &dev->resource[0]);
+ /*
+ * The second 64-bit PCI base register points to the
+ * first memory bank. Unfortunately the address is
+ * wrong, so we fix it (again).
+ */
+ dev->resource[2] = ddb5074_resources.ram;
+ request_resource(&iomem_resource,
+ &dev->resource[2]);
+ } else if (dev->vendor == PCI_VENDOR_ID_AL
+ && dev->device == PCI_DEVICE_ID_AL_M7101) {
+ /*
+ * It's nice to have the LEDs on the GPIO pins
+ * available for debugging
+ */
+ extern struct pci_dev *pci_pmu;
+ u8 t8;
+
+ pci_pmu = dev; /* for LEDs D2 and D3 */
+ /* Program the lines for LEDs D2 and D3 to output */
+ nile4_pci_read_config_byte(dev, 0x7d, &t8);
+ t8 |= 0xc0;
+ nile4_pci_write_config_byte(dev, 0x7d, t8);
+ /* Turn LEDs D2 and D3 off */
+ nile4_pci_read_config_byte(dev, 0x7e, &t8);
+ t8 |= 0xc0;
+ nile4_pci_write_config_byte(dev, 0x7e, t8);
+ }
}
- }
}
static void __init pcibios_fixup_irqs(void)
{
- struct pci_dev *dev;
- int slot_num;
-
- pci_for_each_dev(dev) {
- slot_num = PCI_SLOT(dev->devfn);
- switch (slot_num) {
- case 0:
- dev->irq = nile4_to_irq(NILE4_INT_INTE);
- break;
- case 1:
- dev->irq = nile4_to_irq(NILE4_INT_INTA);
- break;
- case 2: /* slot 1 */
- dev->irq = nile4_to_irq(NILE4_INT_INTA);
- break;
- case 3: /* slot 2 */
- dev->irq = nile4_to_irq(NILE4_INT_INTB);
- break;
- case 4: /* slot 3 */
- dev->irq = nile4_to_irq(NILE4_INT_INTC);
- break;
- case 5:
- /*
- * Fixup so the serial driver can use the UART
- */
- dev->irq = nile4_to_irq(NILE4_INT_UART);
- break;
- case 13:
- dev->irq = nile4_to_irq(NILE4_INT_INTE);
- break;
- default:
- break;
+ struct pci_dev *dev;
+ int slot_num;
+
+ pci_for_each_dev(dev) {
+ slot_num = PCI_SLOT(dev->devfn);
+ switch (slot_num) {
+ case 0:
+ dev->irq = nile4_to_irq(NILE4_INT_INTE);
+ break;
+ case 1:
+ dev->irq = nile4_to_irq(NILE4_INT_INTA);
+ break;
+ case 2: /* slot 1 */
+ dev->irq = nile4_to_irq(NILE4_INT_INTA);
+ break;
+ case 3: /* slot 2 */
+ dev->irq = nile4_to_irq(NILE4_INT_INTB);
+ break;
+ case 4: /* slot 3 */
+ dev->irq = nile4_to_irq(NILE4_INT_INTC);
+ break;
+ case 5:
+ /*
+ * Fixup so the serial driver can use the UART
+ */
+ dev->irq = nile4_to_irq(NILE4_INT_UART);
+ break;
+ case 13:
+ dev->irq = nile4_to_irq(NILE4_INT_INTE);
+ break;
+ default:
+ break;
+ }
}
- }
}
void __init pcibios_init(void)
{
- printk("PCI: Probing PCI hardware\n");
- ioport_resource.end = 0x1ffffff; /* 32 MB */
- iomem_resource.end = 0x1fffffff; /* 512 MB */
- /* `ram' and `nile4' are requested through the Nile4 pci_dev */
- request_resource(&iomem_resource, &ddb5074_resources.flash);
- request_resource(&iomem_resource, &ddb5074_resources.isa_io);
- request_resource(&iomem_resource, &ddb5074_resources.pci_io);
- request_resource(&iomem_resource, &ddb5074_resources.isa_mem);
- request_resource(&iomem_resource, &ddb5074_resources.pci_mem);
- request_resource(&iomem_resource, &ddb5074_resources.boot);
-
- pci_scan_bus(0, &nile4_pci_ops, NULL);
- ddb5074_pci_fixup();
- pci_assign_unassigned_resources();
- pci_set_bus_ranges();
- pcibios_fixup_irqs();
+ printk("PCI: Probing PCI hardware\n");
+ ioport_resource.end = 0x1ffffff; /* 32 MB */
+ iomem_resource.end = 0x1fffffff; /* 512 MB */
+ /* `ram' and `nile4' are requested through the Nile4 pci_dev */
+ request_resource(&iomem_resource, &ddb5074_resources.flash);
+ request_resource(&iomem_resource, &ddb5074_resources.isa_io);
+ request_resource(&iomem_resource, &ddb5074_resources.pci_io);
+ request_resource(&iomem_resource, &ddb5074_resources.isa_mem);
+ request_resource(&iomem_resource, &ddb5074_resources.pci_mem);
+ request_resource(&iomem_resource, &ddb5074_resources.boot);
+
+ pci_scan_bus(0, &nile4_pci_ops, NULL);
+ ddb5074_pci_fixup();
+ pci_assign_unassigned_resources();
+ pci_set_bus_ranges();
+ pcibios_fixup_irqs();
}
void __init pcibios_fixup_bus(struct pci_bus *bus)
{
- bus->resource[1] = &ddb5074_resources.pci_mem;
+ bus->resource[1] = &ddb5074_resources.pci_mem;
}
-char *pcibios_setup (char *str)
+char *pcibios_setup(char *str)
{
- return str;
+ return str;
}
void __init pcibios_update_irq(struct pci_dev *dev, int irq)
{
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
}
void __init pcibios_fixup_pbus_ranges(struct pci_bus *bus,
struct pbus_set_ranges_data *ranges)
{
- ranges->io_start -= bus->resource[0]->start;
- ranges->io_end -= bus->resource[0]->start;
- ranges->mem_start -= bus->resource[1]->start;
- ranges->mem_end -= bus->resource[1]->start;
+ ranges->io_start -= bus->resource[0]->start;
+ ranges->io_end -= bus->resource[0]->start;
+ ranges->mem_start -= bus->resource[1]->start;
+ ranges->mem_end -= bus->resource[1]->start;
}
int pcibios_enable_resources(struct pci_dev *dev)
@@ -324,15 +336,15 @@ int pcibios_enable_resources(struct pci_dev *dev)
* Don't touch the Nile 4
*/
if (dev->vendor == PCI_VENDOR_ID_NEC &&
- dev->device == PCI_DEVICE_ID_NEC_NILE4)
- return 0;
+ dev->device == PCI_DEVICE_ID_NEC_NILE4) return 0;
pci_read_config_word(dev, PCI_COMMAND, &cmd);
old_cmd = cmd;
- for(idx=0; idx<6; idx++) {
+ for (idx = 0; idx < 6; idx++) {
r = &dev->resource[idx];
if (!r->start && r->end) {
- printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", dev->slot_name);
+ printk(KERN_ERR "PCI: Device %s not available because "
+ "of resource collisions\n", dev->slot_name);
return -EINVAL;
}
if (r->flags & IORESOURCE_IO)
@@ -341,7 +353,8 @@ int pcibios_enable_resources(struct pci_dev *dev)
cmd |= PCI_COMMAND_MEMORY;
}
if (cmd != old_cmd) {
- printk("PCI: Enabling device %s (%04x -> %04x)\n", dev->slot_name, old_cmd, cmd);
+ printk("PCI: Enabling device %s (%04x -> %04x)\n",
+ dev->slot_name, old_cmd, cmd);
pci_write_config_word(dev, PCI_COMMAND, cmd);
}
return 0;
@@ -349,7 +362,7 @@ int pcibios_enable_resources(struct pci_dev *dev)
int pcibios_enable_device(struct pci_dev *dev)
{
- return pcibios_enable_resources(dev);
+ return pcibios_enable_resources(dev);
}
void pcibios_update_resource(struct pci_dev *dev, struct resource *root,
@@ -360,18 +373,23 @@ void pcibios_update_resource(struct pci_dev *dev, struct resource *root,
new = res->start | (res->flags & PCI_REGION_FLAG_MASK);
if (resource < 6) {
- reg = PCI_BASE_ADDRESS_0 + 4*resource;
+ reg = PCI_BASE_ADDRESS_0 + 4 * resource;
} else if (resource == PCI_ROM_RESOURCE) {
res->flags |= PCI_ROM_ADDRESS_ENABLE;
reg = dev->rom_base_reg;
} else {
- /* Somebody might have asked allocation of a non-standard resource */
+ /*
+ * Somebody might have asked allocation of a non-standard
+ * resource
+ */
return;
}
-
+
pci_write_config_dword(dev, reg, new);
pci_read_config_dword(dev, reg, &check);
- if ((new ^ check) & ((new & PCI_BASE_ADDRESS_SPACE_IO) ? PCI_BASE_ADDRESS_IO_MASK : PCI_BASE_ADDRESS_MEM_MASK)) {
+ if ((new ^ check) &
+ ((new & PCI_BASE_ADDRESS_SPACE_IO) ? PCI_BASE_ADDRESS_IO_MASK :
+ PCI_BASE_ADDRESS_MEM_MASK)) {
printk(KERN_ERR "PCI: Error while updating region "
"%s/%d (%08x != %08x)\n", dev->slot_name, resource,
new, check);
@@ -401,5 +419,4 @@ void pcibios_align_resource(void *data, struct resource *res,
}
-struct pci_fixup pcibios_fixups[] = {};
-
+struct pci_fixup pcibios_fixups[] = { };