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-rw-r--r--payloads/coreinfo/pci_module.c13
-rw-r--r--payloads/libpayload/drivers/pci.c74
-rw-r--r--payloads/libpayload/include/pci.h29
3 files changed, 73 insertions, 43 deletions
diff --git a/payloads/coreinfo/pci_module.c b/payloads/coreinfo/pci_module.c
index 3e05b8bd54..b2cd8a01f5 100644
--- a/payloads/coreinfo/pci_module.c
+++ b/payloads/coreinfo/pci_module.c
@@ -94,7 +94,8 @@ static void show_config_space(WINDOW *win, int row, int col, int index)
devfn = devices[index].device & 0xff;
for (i = 0; i < 64; i += 4)
- pci_read_dword(bus, devfn, i, ((unsigned int *)&cspace[i]));
+ cspace[i] = pci_read_config32(PCI_DEV(bus, PCI_SLOT(devfn),
+ PCI_FUNC(devfn)), i);
for (y = 0; y < 4; y++) {
for (x = 0; x < 16; x++)
@@ -180,7 +181,10 @@ static void pci_scan_bus(int bus)
for (devfn = 0; devfn < 0x100;) {
for (func = 0; func < 8; func++, devfn++) {
- pci_read_dword(bus, devfn, REG_VENDOR_ID, &val);
+ pcidev_t dev = PCI_DEV(bus, PCI_SLOT(devfn),
+ PCI_FUNC(devfn));
+
+ val = pci_read_config32(dev, REG_VENDOR_ID);
/* Nobody home. */
if (val == 0xffffffff || val == 0x00000000 ||
@@ -197,14 +201,13 @@ static void pci_scan_bus(int bus)
devices[devices_index++].id = val;
/* If this is a bridge, then follow it. */
- pci_read_byte(bus, devfn, REG_HEADER_TYPE, &hdr);
+ hdr = pci_read_config8(dev, REG_HEADER_TYPE);
hdr &= 0x7f;
if (hdr == HEADER_TYPE_BRIDGE ||
hdr == HEADER_TYPE_CARDBUS) {
unsigned int busses;
- pci_read_dword(bus, devfn, REG_PRIMARY_BUS,
- &busses);
+ busses = pci_read_config32(dev, REG_PRIMARY_BUS);
pci_scan_bus((busses >> 8) & 0xff);
diff --git a/payloads/libpayload/drivers/pci.c b/payloads/libpayload/drivers/pci.c
index c6f48dd987..fc1940afbc 100644
--- a/payloads/libpayload/drivers/pci.c
+++ b/payloads/libpayload/drivers/pci.c
@@ -2,6 +2,7 @@
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2008 coresystems GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -30,32 +31,70 @@
#include <libpayload.h>
#include <pci.h>
+u8 pci_read_config8(pcidev_t device, u16 reg)
+{
+ outl(device | (reg & ~3), 0xCF8);
+ return inb(0xCFC + (reg & 3));
+}
+
+u16 pci_read_config16(pcidev_t device, u16 reg)
+{
+ outl(device | (reg & ~3), 0xCF8);
+ return inw(0xCFC + (reg & 3));
+}
+
+u32 pci_read_config32(pcidev_t device, u16 reg)
+{
+ outl(device | (reg & ~3), 0xCF8);
+ return inl(0xCFC + (reg & 3));
+}
+
+void pci_write_config8(pcidev_t device, u16 reg, u8 val)
+{
+ outl(device | (reg & ~3), 0xCF8);
+ outb(val, 0xCFC + (reg & 3));
+}
+
+void pci_write_config16(pcidev_t device, u16 reg, u16 val)
+{
+ outl(device | (reg & ~3), 0xCF8);
+ outw(val, 0xCFC + (reg & 3));
+}
+
+void pci_write_config32(pcidev_t device, u16 reg, u32 val)
+{
+ outl(device | (reg & ~3), 0xCF8);
+ outl(val, 0xCFC + (reg & 3));
+}
+
static int find_on_bus(int bus, unsigned short vid, unsigned short did,
pcidev_t * dev)
{
int devfn;
- unsigned int val;
+ u32 val;
unsigned char hdr;
for (devfn = 0; devfn < 0x100; devfn++) {
- pci_read_dword(bus, devfn, REG_VENDOR_ID, &val);
+ val = pci_read_config32(PCI_DEV(bus, PCI_SLOT(devfn),
+ PCI_FUNC(devfn)), REG_VENDOR_ID);
if (val == 0xffffffff || val == 0x00000000 ||
val == 0x0000ffff || val == 0xffff0000)
continue;
if (val == ((did << 16) | vid)) {
- *dev = PCIDEV(bus, devfn);
+ *dev = PCI_DEV(bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
return 1;
}
- pci_read_byte(bus, devfn, REG_HEADER_TYPE, &hdr);
-
+ hdr = pci_read_config8(PCI_DEV(bus, PCI_SLOT(devfn),
+ PCI_FUNC(devfn)), REG_HEADER_TYPE);
hdr &= 0x7F;
if (hdr == HEADER_TYPE_BRIDGE || hdr == HEADER_TYPE_CARDBUS) {
unsigned int busses;
- pci_read_dword(bus, devfn, REG_PRIMARY_BUS, &busses);
+ busses = pci_read_config32(PCI_DEV(bus, PCI_SLOT(devfn),
+ PCI_FUNC(devfn)), REG_PRIMARY_BUS);
if (find_on_bus((busses >> 8) & 0xFF, vid, did, dev))
return 1;
}
@@ -64,29 +103,12 @@ static int find_on_bus(int bus, unsigned short vid, unsigned short did,
return 0;
}
-void pci_read_dword(unsigned int bus, unsigned int devfn,
- unsigned int reg, unsigned int *val)
-{
- outl(PCI_ADDR(bus, devfn, reg), 0xCF8);
- *val = inl(0xCFC);
-}
-
-void pci_read_byte(unsigned int bus, unsigned int devfn,
- unsigned int reg, unsigned char *val)
-{
- outl(PCI_ADDR(bus, devfn, reg), 0xCF8);
- *val = inb(0xCFC + (reg & 3));
-}
-
-int pci_find_device(unsigned short vid, unsigned short did, pcidev_t * dev)
+int pci_find_device(u16 vid, u16 did, pcidev_t * dev)
{
return find_on_bus(0, vid, did, dev);
}
-unsigned int pci_read_resource(pcidev_t dev, int bar)
+u32 pci_read_resource(pcidev_t dev, int bar)
{
- unsigned int val;
- pci_read_dword(PCIDEV_BUS(dev), PCIDEV_DEVFN(dev), 0x10 + (bar * 4),
- &val);
- return val;
+ return pci_read_config32(dev, 0x10 + (bar * 4));
}
diff --git a/payloads/libpayload/include/pci.h b/payloads/libpayload/include/pci.h
index df88e098ab..bcc333ce9e 100644
--- a/payloads/libpayload/include/pci.h
+++ b/payloads/libpayload/include/pci.h
@@ -2,6 +2,7 @@
* This file is part of the libpayload project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2008 coresystems GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -30,7 +31,8 @@
#ifndef _PCI_H
#define _PCI_H
-typedef unsigned short pcidev_t;
+#include <arch/types.h>
+typedef u32 pcidev_t;
#define REG_VENDOR_ID 0x00
#define REG_DEVICE_ID 0x04
@@ -41,21 +43,24 @@ typedef unsigned short pcidev_t;
#define HEADER_TYPE_BRIDGE 1
#define HEADER_TYPE_CARDBUS 2
-#define PCIDEV(_b, _d) ((((_b) & 0xFF) << 8) | ((_d) & 0xFF))
+#define PCI_ADDR(_bus, _dev, _fn, _reg) \
+(0x80000000 | (_bus << 16) | (_dev << 11) | (_fn << 8) | (_reg & ~3))
-#define PCIDEV_BUS(_d) (((_d) >> 8) & 0xFF)
-#define PCIDEV_DEVFN(_d) ((_d) & 0xFF)
+#define PCI_DEV(_bus, _dev, _fn) \
+(0x80000000 | (_bus << 16) | (_dev << 11) | (_fn << 8))
-#define PCI_ADDR(_bus, _dev, _reg) \
-(0x80000000 | (_bus << 16) | (_dev << 8) | (_reg & ~3))
+#define PCI_SLOT(_d) ((_d >> 11) & 0x1f)
+#define PCI_FUNC(_d) ((_d >> 8) & 0x7)
-void pci_read_dword(unsigned int bus, unsigned int devfn,
- unsigned int reg, unsigned int *val);
+u8 pci_read_config8(u32 device, u16 reg);
+u16 pci_read_config16(u32 device, u16 reg);
+u32 pci_read_config32(u32 device, u16 reg);
-void pci_read_byte(unsigned int bus, unsigned int devfn,
- unsigned int reg, unsigned char *val);
+void pci_write_config8(u32 device, u16 reg, u8 val);
+void pci_write_config16(u32 device, u16 reg, u16 val);
+void pci_write_config32(u32 device, u16 reg, u32 val);
-int pci_find_device(unsigned short vid, unsigned short did, pcidev_t *dev);
-unsigned int pci_read_resource(pcidev_t dev, int bar);
+int pci_find_device(u16 vid, u16 did, pcidev_t *dev);
+u32 pci_read_resource(pcidev_t dev, int bar);
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 00:13:11 +0000