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Diffstat (limited to 'drivers/pci.c')
-rw-r--r--drivers/pci.c212
1 files changed, 100 insertions, 112 deletions
diff --git a/drivers/pci.c b/drivers/pci.c
index 9eaaa15ab..289db8fcf 100644
--- a/drivers/pci.c
+++ b/drivers/pci.c
@@ -2,7 +2,7 @@
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Andreas Heppel <aheppel@sysgo.de>
*
- * (C) Copyright 2002
+ * (C) Copyright 2002, 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
@@ -48,12 +48,12 @@
*
*/
-#define PCI_HOSE_OP(rw, size, type) \
-int pci_hose_##rw##_config_##size(struct pci_controller *hose, \
- pci_dev_t dev, \
- int offset, type value) \
-{ \
- return hose->rw##_##size(hose, dev, offset, value); \
+#define PCI_HOSE_OP(rw, size, type) \
+int pci_hose_##rw##_config_##size(struct pci_controller *hose, \
+ pci_dev_t dev, \
+ int offset, type value) \
+{ \
+ return hose->rw##_##size(hose, dev, offset, value); \
}
PCI_HOSE_OP(read, byte, u8 *)
@@ -63,18 +63,18 @@ PCI_HOSE_OP(write, byte, u8)
PCI_HOSE_OP(write, word, u16)
PCI_HOSE_OP(write, dword, u32)
-#define PCI_OP(rw, size, type, error_code) \
-int pci_##rw##_config_##size(pci_dev_t dev, int offset, type value) \
-{ \
- struct pci_controller *hose = pci_bus_to_hose(PCI_BUS(dev)); \
- \
- if (!hose) \
- { \
- error_code; \
- return -1; \
- } \
- \
- return pci_hose_##rw##_config_##size(hose, dev, offset, value); \
+#define PCI_OP(rw, size, type, error_code) \
+int pci_##rw##_config_##size(pci_dev_t dev, int offset, type value) \
+{ \
+ struct pci_controller *hose = pci_bus_to_hose(PCI_BUS(dev)); \
+ \
+ if (!hose) \
+ { \
+ error_code; \
+ return -1; \
+ } \
+ \
+ return pci_hose_##rw##_config_##size(hose, dev, offset, value); \
}
PCI_OP(read, byte, u8 *, *value = 0xff)
@@ -84,40 +84,40 @@ PCI_OP(write, byte, u8, )
PCI_OP(write, word, u16, )
PCI_OP(write, dword, u32, )
-#define PCI_READ_VIA_DWORD_OP(size, type, off_mask) \
-int pci_hose_read_config_##size##_via_dword(struct pci_controller *hose, \
- pci_dev_t dev, \
- int offset, type val) \
-{ \
- u32 val32; \
- \
- if (pci_hose_read_config_dword(hose, dev, offset & 0xfc, &val32) < 0) \
- return -1; \
- \
- *val = (val32 >> ((offset & (int)off_mask) * 8)); \
- \
- return 0; \
+#define PCI_READ_VIA_DWORD_OP(size, type, off_mask) \
+int pci_hose_read_config_##size##_via_dword(struct pci_controller *hose,\
+ pci_dev_t dev, \
+ int offset, type val) \
+{ \
+ u32 val32; \
+ \
+ if (pci_hose_read_config_dword(hose, dev, offset & 0xfc, &val32) < 0)\
+ return -1; \
+ \
+ *val = (val32 >> ((offset & (int)off_mask) * 8)); \
+ \
+ return 0; \
}
-#define PCI_WRITE_VIA_DWORD_OP(size, type, off_mask, val_mask) \
-int pci_hose_write_config_##size##_via_dword(struct pci_controller *hose, \
- pci_dev_t dev, \
- int offset, type val) \
-{ \
- u32 val32, mask, ldata; \
- \
- if (pci_hose_read_config_dword(hose, dev, offset & 0xfc, &val32) < 0) \
- return -1; \
- \
- mask = val_mask; \
+#define PCI_WRITE_VIA_DWORD_OP(size, type, off_mask, val_mask) \
+int pci_hose_write_config_##size##_via_dword(struct pci_controller *hose,\
+ pci_dev_t dev, \
+ int offset, type val) \
+{ \
+ u32 val32, mask, ldata; \
+ \
+ if (pci_hose_read_config_dword(hose, dev, offset & 0xfc, &val32) < 0)\
+ return -1; \
+ \
+ mask = val_mask; \
ldata = (((unsigned long)val) & mask) << ((offset & (int)off_mask) * 8);\
- mask <<= ((mask & (int)off_mask) * 8); \
- val32 = (val32 & ~mask) | ldata; \
- \
- if (pci_hose_write_config_dword(hose, dev, offset & 0xfc, val32) < 0) \
- return -1; \
- \
- return 0; \
+ mask <<= ((mask & (int)off_mask) * 8); \
+ val32 = (val32 & ~mask) | ldata; \
+ \
+ if (pci_hose_write_config_dword(hose, dev, offset & 0xfc, val32) < 0)\
+ return -1; \
+ \
+ return 0; \
}
PCI_READ_VIA_DWORD_OP(byte, u8 *, 0x03)
@@ -143,13 +143,12 @@ void pci_register_hose(struct pci_controller* hose)
*phose = hose;
}
-struct pci_controller* pci_bus_to_hose(int bus)
+struct pci_controller *pci_bus_to_hose (int bus)
{
struct pci_controller *hose;
for (hose = hose_head; hose; hose = hose->next)
- if (bus >= hose->first_busno &&
- bus <= hose->last_busno)
+ if (bus >= hose->first_busno && bus <= hose->last_busno)
return hose;
return NULL;
@@ -178,16 +177,13 @@ pci_dev_t pci_find_devices(struct pci_device_id *ids, int index)
#endif
bdf += PCI_BDF(0,0,1))
{
- if (!PCI_FUNC(bdf))
- {
+ if (!PCI_FUNC(bdf)) {
pci_read_config_byte(bdf,
PCI_HEADER_TYPE,
&header_type);
found_multi = header_type & 0x80;
- }
- else
- {
+ } else {
if (!found_multi)
continue;
}
@@ -228,22 +224,20 @@ pci_dev_t pci_find_device(unsigned int vendor, unsigned int device, int index)
*
*/
-unsigned long pci_hose_phys_to_bus(struct pci_controller* hose,
- unsigned long phys_addr,
- unsigned long flags)
+unsigned long pci_hose_phys_to_bus (struct pci_controller *hose,
+ unsigned long phys_addr,
+ unsigned long flags)
{
struct pci_region *res;
unsigned long bus_addr;
int i;
- if (!hose)
- {
- printf("pci_hose_phys_to_bus: %s\n", "invalid hose");
+ if (!hose) {
+ printf ("pci_hose_phys_to_bus: %s\n", "invalid hose");
goto Done;
}
- for (i=0; i<hose->region_count; i++)
- {
+ for (i = 0; i < hose->region_count; i++) {
res = &hose->regions[i];
if (((res->flags ^ flags) & PCI_REGION_TYPE) != 0)
@@ -252,15 +246,14 @@ unsigned long pci_hose_phys_to_bus(struct pci_controller* hose,
bus_addr = phys_addr - res->phys_start + res->bus_start;
if (bus_addr >= res->bus_start &&
- bus_addr < res->bus_start + res->size)
- {
+ bus_addr < res->bus_start + res->size) {
return bus_addr;
}
}
- printf("pci_hose_phys_to_bus: %s\n", "invalid physical address");
+ printf ("pci_hose_phys_to_bus: %s\n", "invalid physical address");
- Done:
+Done:
return 0;
}
@@ -271,29 +264,26 @@ unsigned long pci_hose_bus_to_phys(struct pci_controller* hose,
struct pci_region *res;
int i;
- if (!hose)
- {
- printf("pci_hose_bus_to_phys: %s\n", "invalid hose");
+ if (!hose) {
+ printf ("pci_hose_bus_to_phys: %s\n", "invalid hose");
goto Done;
}
- for (i=0; i<hose->region_count; i++)
- {
+ for (i = 0; i < hose->region_count; i++) {
res = &hose->regions[i];
if (((res->flags ^ flags) & PCI_REGION_TYPE) != 0)
continue;
if (bus_addr >= res->bus_start &&
- bus_addr < res->bus_start + res->size)
- {
+ bus_addr < res->bus_start + res->size) {
return bus_addr - res->bus_start + res->phys_start;
}
}
- printf("pci_hose_bus_to_phys: %s\n", "invalid physical address");
+ printf ("pci_hose_bus_to_phys: %s\n", "invalid physical address");
- Done:
+Done:
return 0;
}
@@ -311,14 +301,14 @@ int pci_hose_config_device(struct pci_controller *hose,
unsigned char pin;
int bar, found_mem64;
- DEBUGF("PCI Config: I/O=0x%lx, Memory=0x%lx, Command=0x%lx\n", io, mem, command);
+ DEBUGF ("PCI Config: I/O=0x%lx, Memory=0x%lx, Command=0x%lx\n",
+ io, mem, command);
- pci_hose_write_config_dword(hose, dev, PCI_COMMAND, 0);
+ pci_hose_write_config_dword (hose, dev, PCI_COMMAND, 0);
- for (bar = PCI_BASE_ADDRESS_0; bar < PCI_BASE_ADDRESS_5; bar += 4)
- {
- pci_hose_write_config_dword(hose, dev, bar, 0xffffffff);
- pci_hose_read_config_dword(hose, dev, bar, &bar_response);
+ for (bar = PCI_BASE_ADDRESS_0; bar < PCI_BASE_ADDRESS_5; bar += 4) {
+ pci_hose_write_config_dword (hose, dev, bar, 0xffffffff);
+ pci_hose_read_config_dword (hose, dev, bar, &bar_response);
if (!bar_response)
continue;
@@ -326,51 +316,51 @@ int pci_hose_config_device(struct pci_controller *hose,
found_mem64 = 0;
/* Check the BAR type and set our address mask */
- if (bar_response & PCI_BASE_ADDRESS_SPACE)
- {
+ if (bar_response & PCI_BASE_ADDRESS_SPACE) {
bar_size = ~(bar_response & PCI_BASE_ADDRESS_IO_MASK) + 1;
- bar_value = io;
-
+ /* round up region base address to a multiple of size */
io = ((io - 1) | (bar_size - 1)) + 1;
- }
- else
- {
- if ( (bar_response & PCI_BASE_ADDRESS_MEM_TYPE_MASK) ==
- PCI_BASE_ADDRESS_MEM_TYPE_64)
+ bar_value = io;
+ /* compute new region base address */
+ io = io + bar_size;
+ } else {
+ if ((bar_response & PCI_BASE_ADDRESS_MEM_TYPE_MASK) ==
+ PCI_BASE_ADDRESS_MEM_TYPE_64)
found_mem64 = 1;
bar_size = ~(bar_response & PCI_BASE_ADDRESS_MEM_MASK) + 1;
- bar_value = mem;
+ /* round up region base address to multiple of size */
mem = ((mem - 1) | (bar_size - 1)) + 1;
+ bar_value = mem;
+ /* compute new region base address */
+ mem = mem + bar_size;
}
/* Write it out and update our limit */
- pci_hose_write_config_dword(hose, dev, bar, bar_value);
+ pci_hose_write_config_dword (hose, dev, bar, bar_value);
- if (found_mem64)
- {
+ if (found_mem64) {
bar += 4;
- pci_hose_write_config_dword(hose, dev, bar, 0x00000000);
+ pci_hose_write_config_dword (hose, dev, bar, 0x00000000);
}
}
/* Configure Cache Line Size Register */
- pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
+ pci_hose_write_config_byte (hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
/* Configure Latency Timer */
- pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
+ pci_hose_write_config_byte (hose, dev, PCI_LATENCY_TIMER, 0x80);
/* Disable interrupt line, if device says it wants to use interrupts */
- pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &pin);
- if (pin != 0)
- {
- pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, 0xff);
+ pci_hose_read_config_byte (hose, dev, PCI_INTERRUPT_PIN, &pin);
+ if (pin != 0) {
+ pci_hose_write_config_byte (hose, dev, PCI_INTERRUPT_LINE, 0xff);
}
- pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &old_command);
- pci_hose_write_config_dword(hose, dev, PCI_COMMAND,
- (old_command & 0xffff0000) | command );
+ pci_hose_read_config_dword (hose, dev, PCI_COMMAND, &old_command);
+ pci_hose_write_config_dword (hose, dev, PCI_COMMAND,
+ (old_command & 0xffff0000) | command);
return 0;
}
@@ -389,15 +379,13 @@ struct pci_config_table *pci_find_config(struct pci_controller *hose,
{
struct pci_config_table *table;
- for (table = hose->config_table; table && table->vendor; table++)
- {
+ for (table = hose->config_table; table && table->vendor; table++) {
if ((table->vendor == PCI_ANY_ID || table->vendor == vendor) &&
(table->device == PCI_ANY_ID || table->device == device) &&
(table->class == PCI_ANY_ID || table->class == class) &&
(table->bus == PCI_ANY_ID || table->bus == bus) &&
(table->dev == PCI_ANY_ID || table->dev == dev) &&
- (table->func == PCI_ANY_ID || table->func == func))
- {
+ (table->func == PCI_ANY_ID || table->func == func)) {
return table;
}
}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 06:05:32 +0000