sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2026-01-13 00:48:39 +03:00
Code Issues Packages Projects Releases Wiki Activity

[efi] Retain a long-lived reference to the EFI_PCI_IO_PROTOCOL instance

Browse Source 
Provide opened EFI PCI devices with access to the underlying
EFI_PCI_IO_PROTOCOL instance, in order to facilitate the future use of
the DMA mapping methods within the fast data path.

Do not require the use of this stored EFI_PCI_IO_PROTOCOL instance for
memory-mapped I/O (since the entire point of memory-mapped I/O as a
concept is to avoid this kind of unnecessary complexity) or for
slow-path PCI configuration space accesses (since these may be
required for access to PCI bus:dev.fn addresses that do not correspond
to a device bound via our driver binding protocol instance).

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2020-11-04 15:08:48 +00:00
parent f560e7b70b
commit 36dde9b0bf
4 changed files with 60 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/interface/efi/efi_bofm.c
View File

@@ -164,7 +164,7 @@ static EFI_GUID bofm2_protocol_guid =
*/
static int efi_bofm_supported ( EFI_HANDLE device ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
struct pci_device pci;
struct efi_pci_device efipci;
union {
IBM_BOFM_DRIVER_CONFIGURATION_PROTOCOL *bofm1;
void *interface;
@@ -173,11 +173,11 @@ static int efi_bofm_supported ( EFI_HANDLE device ) {
int rc;
/* Get PCI device information */
if ( ( rc = efipci_info ( device, &pci ) ) != 0 )
if ( ( rc = efipci_info ( device, &efipci ) ) != 0 )
return rc;
/* Look for a BOFM driver */
if ( ( rc = bofm_find_driver ( &pci ) ) != 0 ) {
if ( ( rc = bofm_find_driver ( &efipci.pci ) ) != 0 ) {
DBGCP ( device, "EFIBOFM %s has no driver\n",
efi_handle_name ( device ) );
return rc;
@@ -204,7 +204,7 @@ static int efi_bofm_supported ( EFI_HANDLE device ) {
}
DBGC ( device, "EFIBOFM %s has driver \"%s\"\n",
efi_handle_name ( device ), pci.id->name );
efi_handle_name ( device ), efipci.pci.id->name );
return 0;
}
@@ -225,7 +225,7 @@ static int efi_bofm_start ( struct efi_device *efidev ) {
IBM_BOFM_DRIVER_CONFIGURATION_PROTOCOL2 *bofm2;
void *interface;
} bofm2;
struct pci_device pci;
struct efi_pci_device efipci;
IBM_BOFM_TABLE *bofmtab;
IBM_BOFM_TABLE *bofmtab2;
int bofmrc;
@@ -234,7 +234,7 @@ static int efi_bofm_start ( struct efi_device *efidev ) {
/* Open PCI device, if possible */
if ( ( rc = efipci_open ( device, EFI_OPEN_PROTOCOL_GET_PROTOCOL,
&pci ) ) != 0 )
&efipci ) ) != 0 )
goto err_open;
/* Locate BOFM protocol */
@@ -274,7 +274,8 @@ static int efi_bofm_start ( struct efi_device *efidev ) {
efi_handle_name ( device ) );
DBGC2_HD ( device, bofmtab2, bofmtab2->Parameters.Length );
}
bofmrc = bofm ( virt_to_user ( bofmtab2 ? bofmtab2 : bofmtab ), &pci );
bofmrc = bofm ( virt_to_user ( bofmtab2 ? bofmtab2 : bofmtab ),
&efipci.pci );
DBGC ( device, "EFIBOFM %s status %08x\n",
efi_handle_name ( device ), bofmrc );
DBGC2 ( device, "EFIBOFM %s version 1 after processing:\n",