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Restructured PCI subsystem to fit the new device model.

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Generic PCI code now handles 64-bit BARs correctly when setting
"membase"; drivers should need to call pci_bar_start() only if they want
to use BARs other than the first memory or I/O BAR.

Split rarely-used PCI functions out into pciextra.c.

Core PCI code is now 662 bytes (down from 1308 bytes in Etherboot 5.4).
284 bytes of this saving comes from the pci/pciextra split.

Cosmetic changes to lots of drivers (e.g. vendor_id->vendor in order to
match the names used in Linux).
This commit is contained in:
Michael Brown
2006-05-16 15:12:06 +00:00
parent fcdab6299c
commit 15ee09ed10
35 changed files with 552 additions and 542 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/arch/i386/core/pci_io.c
View File

@@ -21,8 +21,9 @@
/* Macros for direct PCI access */
#define CONFIG_ADDRESS 0xcf8
#define CONFIG_DATA 0xcfc
#define CONFIG_CMD( pci, where ) \
( 0x80000000 | (pci->busdevfn << 8) | (where & ~3) )
#define CONFIG_CMD( pci, where ) \
( 0x80000000 | ( pci->bus << 16 ) | ( pci->devfn << 8 ) | \
( where & ~3 ) )
/* Signatures for PCI BIOS */
#define BIOS_SIG(a,b,c,d) ( ( a<<0 ) + ( b<<8 ) + ( c<<16 ) + ( d<<24 ) )
@@ -343,8 +344,9 @@ INIT_FN ( INIT_PCIBIOS, find_pcibios32, NULL, NULL );
"=S" ( discard_S ), "=D" ( discard_D ) \
: "a" ( ( PCIBIOS_PCI_FUNCTION_ID << 8 ) \
+ command ), \
"b" ( pci->busdevfn ), "c" ( value ), \
"D" ( where ), "S" ( pcibios32_entry ) \
"b" ( ( pci->bus << 8 ) | pci->devfn ), \
"c" ( value ), "D" ( where ), \
"S" ( pcibios32_entry ) \
: "edx", "ebp" ); \
\
( ret >> 8 ); \

28
src/arch/i386/prefix/select_pci.c
View File

@@ -1,28 +0,0 @@
#include "dev.h"
#include <gpxe/pci.h>
#include "registers.h"
/*
* Register a device as the default PCI boot device. This code is
* called by the PCI ROM prefix.
*
* Do not move this code to drivers/bus/pci.c, because it is
* i386-specific, and don't merge it with select_isapnp.c, because
* that would cause linker symbol pollution.
*
*/
void i386_select_pci_device ( struct i386_all_regs *ix86 ) {
/*
* PCI BIOS passes busdevfn in %ax
*
*/
union {
struct bus_loc bus_loc;
struct pci_loc pci_loc;
} u;
/* Select PCI bus and specified busdevfn as first boot device */
memset ( &u, 0, sizeof ( u ) );
u.pci_loc.busdevfn = ix86->regs.ax;
select_device ( &dev, &pci_driver, &u.bus_loc );
}