dm: x86: pci: Add a PCI driver for driver model
Add a simple x86 PCI driver which uses standard functions provided by the
architecture.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/pci.c b/arch/x86/cpu/pci.c
index c6c5267..e23b233 100644
--- a/arch/x86/cpu/pci.c
+++ b/arch/x86/cpu/pci.c
@@ -10,9 +10,11 @@
*/
#include <common.h>
+#include <dm.h>
#include <errno.h>
#include <malloc.h>
#include <pci.h>
+#include <asm/io.h>
#include <asm/pci.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -111,3 +113,41 @@
{
pci_hose_write_config_dword(get_hose(), dev, where, value);
}
+
+int pci_x86_read_config(struct udevice *bus, pci_dev_t bdf, uint offset,
+ ulong *valuep, enum pci_size_t size)
+{
+ outl(bdf | (offset & 0xfc) | PCI_CFG_EN, PCI_REG_ADDR);
+ switch (size) {
+ case PCI_SIZE_8:
+ *valuep = inb(PCI_REG_DATA + (offset & 3));
+ break;
+ case PCI_SIZE_16:
+ *valuep = inw(PCI_REG_DATA + (offset & 2));
+ break;
+ case PCI_SIZE_32:
+ *valuep = inl(PCI_REG_DATA);
+ break;
+ }
+
+ return 0;
+}
+
+int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset,
+ ulong value, enum pci_size_t size)
+{
+ outl(bdf | (offset & 0xfc) | PCI_CFG_EN, PCI_REG_ADDR);
+ switch (size) {
+ case PCI_SIZE_8:
+ outb(value, PCI_REG_DATA + (offset & 3));
+ break;
+ case PCI_SIZE_16:
+ outw(value, PCI_REG_DATA + (offset & 2));
+ break;
+ case PCI_SIZE_32:
+ outl(value, PCI_REG_DATA);
+ break;
+ }
+
+ return 0;
+}
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index b277b3d..a1969ed 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -8,6 +8,8 @@
#ifndef _PCI_I386_H_
#define _PCI_I386_H_
+#include <pci.h>
+
/* bus mapping constants (used for PCI core initialization) */
#define PCI_REG_ADDR 0xcf8
#define PCI_REG_DATA 0xcfc
@@ -56,6 +58,12 @@
void x86_pci_write_config16(pci_dev_t dev, unsigned where, unsigned value);
void x86_pci_write_config32(pci_dev_t dev, unsigned where, unsigned value);
+int pci_x86_read_config(struct udevice *bus, pci_dev_t bdf, uint offset,
+ ulong *valuep, enum pci_size_t size);
+
+int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset,
+ ulong value, enum pci_size_t size);
+
#endif /* __ASSEMBLY__ */
#endif /* _PCI_I386_H_ */
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index c17f7f0..67a34d8 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -17,7 +17,9 @@
obj-y += cmd_mtrr.o
obj-$(CONFIG_SYS_PCAT_INTERRUPTS) += pcat_interrupts.o
obj-$(CONFIG_SYS_PCAT_TIMER) += pcat_timer.o
+ifndef CONFIG_DM_PCI
obj-$(CONFIG_PCI) += pci_type1.o
+endif
obj-y += relocate.o
obj-y += physmem.o
obj-$(CONFIG_X86_RAMTEST) += ramtest.o