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kernel/handle-efi-roms.patch

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handle-efi-roms.patch: Improve PCI support on UEFI systems
2012-09-04 15:31:54 +00:00
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/boot/compressed/eboot.c ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/boot/compressed/eboot.c
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/boot/compressed/eboot.c 2012-08-22 15:26:32.485522068 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/boot/compressed/eboot.c 2012-08-22 15:25:40.529244868 -0400
@@ -8,6 +8,7 @@
* ----------------------------------------------------------------------- */
#include <linux/efi.h>
+#include <linux/pci.h>
#include <asm/efi.h>
#include <asm/setup.h>
#include <asm/desc.h>
@@ -243,6 +244,121 @@
*size = len;
}
+static efi_status_t setup_efi_pci(struct boot_params *params)
+{
+ efi_pci_io_protocol *pci;
+ efi_status_t status;
+ void **pci_handle;
+ efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
+ unsigned long nr_pci, size = 0;
+ int i;
+ struct setup_data *data;
+
+ data = (struct setup_data *)params->hdr.setup_data;
+
+ while (data && data->next)
+ data = (struct setup_data *)data->next;
+
+ status = efi_call_phys5(sys_table->boottime->locate_handle,
+ EFI_LOCATE_BY_PROTOCOL, &pci_proto,
+ NULL, &size, pci_handle);
+
+ if (status == EFI_BUFFER_TOO_SMALL) {
+ status = efi_call_phys3(sys_table->boottime->allocate_pool,
+ EFI_LOADER_DATA, size, &pci_handle);
+
+ if (status != EFI_SUCCESS)
+ return status;
+
+ status = efi_call_phys5(sys_table->boottime->locate_handle,
+ EFI_LOCATE_BY_PROTOCOL, &pci_proto,
+ NULL, &size, pci_handle);
+ }
+
+ if (status != EFI_SUCCESS)
+ goto free_handle;
+
+ nr_pci = size / sizeof(void *);
+ for (i = 0; i < nr_pci; i++) {
+ void *h = pci_handle[i];
+ uint64_t attributes;
+ struct pci_setup_rom *rom;
+
+ status = efi_call_phys3(sys_table->boottime->handle_protocol,
+ h, &pci_proto, &pci);
+
+ if (status != EFI_SUCCESS)
+ continue;
+
+ if (!pci)
+ continue;
+
+ status = efi_call_phys4(pci->attributes, pci,
+ EfiPciIoAttributeOperationGet, 0,
+ &attributes);
+
+ if (status != EFI_SUCCESS)
+ continue;
+
+ if (!attributes & EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM)
+ continue;
+
+ if (!pci->romimage || !pci->romsize)
+ continue;
+
+ size = pci->romsize + sizeof(*rom);
+
+ status = efi_call_phys3(sys_table->boottime->allocate_pool,
+ EFI_LOADER_DATA, size, &rom);
+
+ if (status != EFI_SUCCESS)
+ continue;
+
+ rom->data.type = SETUP_PCI;
+ rom->data.len = size - sizeof(struct setup_data);
+ rom->data.next = NULL;
+ rom->pcilen = pci->romsize;
+
+ status = efi_call_phys5(pci->pci.read, pci,
+ EfiPciIoWidthUint16, PCI_VENDOR_ID,
+ 1, &(rom->vendor));
+
+ if (status != EFI_SUCCESS)
+ goto free_struct;
+
+ status = efi_call_phys5(pci->pci.read, pci,
+ EfiPciIoWidthUint16, PCI_DEVICE_ID,
+ 1, &(rom->devid));
+
+ if (status != EFI_SUCCESS)
+ goto free_struct;
+
+ status = efi_call_phys5(pci->get_location, pci,
+ &(rom->segment), &(rom->bus),
+ &(rom->device), &(rom->function));
+
+ if (status != EFI_SUCCESS)
+ goto free_struct;
+
+ memcpy(rom->romdata, pci->romimage, pci->romsize);
+
+ if (data)
+ data->next = (uint64_t)rom;
+ else
+ params->hdr.setup_data = (uint64_t)rom;
+
+ data = (struct setup_data *)rom;
+
+ continue;
+ free_struct:
+ efi_call_phys1(sys_table->boottime->free_pool, rom);
+ }
+
+free_handle:
+ efi_call_phys1(sys_table->boottime->free_pool, pci_handle);
+ return status;
+}
+
/*
* See if we have Graphics Output Protocol
*/
@@ -1052,6 +1171,8 @@
setup_graphics(boot_params);
+ setup_efi_pci(boot_params);
+
status = efi_call_phys3(sys_table->boottime->allocate_pool,
EFI_LOADER_DATA, sizeof(*gdt),
(void **)&gdt);
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/include/asm/bootparam.h ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/include/asm/bootparam.h
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/include/asm/bootparam.h 2012-08-22 15:26:32.485522068 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/include/asm/bootparam.h 2012-08-22 15:25:40.530244882 -0400
@@ -13,6 +13,7 @@
#define SETUP_NONE 0
#define SETUP_E820_EXT 1
#define SETUP_DTB 2
+#define SETUP_PCI 3
/* extensible setup data list node */
struct setup_data {
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/include/asm/pci.h ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/include/asm/pci.h
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/include/asm/pci.h 2012-07-21 16:58:29.000000000 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/include/asm/pci.h 2012-08-22 15:25:40.530244882 -0400
@@ -171,4 +171,16 @@
}
#endif
+struct pci_setup_rom {
+ struct setup_data data;
+ uint16_t vendor;
+ uint16_t devid;
+ uint64_t pcilen;
+ unsigned long segment;
+ unsigned long bus;
+ unsigned long device;
+ unsigned long function;
+ uint8_t romdata[0];
+};
+
#endif /* _ASM_X86_PCI_H */
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/pci/common.c ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/pci/common.c
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/pci/common.c 2012-08-22 15:24:45.477951182 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/arch/x86/pci/common.c 2012-08-22 15:25:40.530244882 -0400
@@ -17,6 +17,7 @@
#include <asm/io.h>
#include <asm/smp.h>
#include <asm/pci_x86.h>
+#include <asm/setup.h>
unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
PCI_PROBE_MMCONF;
@@ -608,6 +609,38 @@
return (pci_probe & PCI_ASSIGN_ALL_BUSSES) ? 1 : 0;
}
+int pcibios_add_device(struct pci_dev *dev)
+{
+ struct setup_data *data;
+ struct pci_setup_rom *rom;
+ u64 pa_data;
+
+ if (boot_params.hdr.version < 0x0209)
+ return 0;
+
+ pa_data = boot_params.hdr.setup_data;
+ while (pa_data) {
+ data = phys_to_virt(pa_data);
+
+ if (data->type == SETUP_PCI) {
+ rom = (struct pci_setup_rom *)data;
+
+ if ((pci_domain_nr(dev->bus) == rom->segment) &&
+ (dev->bus->number == rom->bus) &&
+ (PCI_SLOT(dev->devfn) == rom->device) &&
+ (PCI_FUNC(dev->devfn) == rom->function) &&
+ (dev->vendor == rom->vendor) &&
+ (dev->device == rom->devid)) {
+ dev->rom = (void *)(pa_data +
+ offsetof(struct pci_setup_rom, romdata));
+ dev->romlen = rom->pcilen;
+ }
+ }
+ pa_data = data->next;
+ }
+ return 0;
+}
+
int pcibios_enable_device(struct pci_dev *dev, int mask)
{
int err;
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/bus.c ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/bus.c
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/bus.c 2012-08-22 15:24:47.425961575 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/bus.c 2012-08-22 15:26:20.147456241 -0400
@@ -166,6 +166,11 @@
int retval;
pci_fixup_device(pci_fixup_final, dev);
+
+ retval = pcibios_add_device(dev);
+ if (retval)
+ return retval;
+
retval = device_add(&dev->dev);
if (retval)
return retval;
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/pci.c ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/pci.c
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/pci.c 2012-08-22 15:24:47.432961612 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/pci.c 2012-08-22 15:25:40.531244893 -0400
@@ -1385,6 +1385,19 @@
dr->pinned = 1;
}
+/*
+ * pcibios_add_device - provide arch specific hooks when adding device dev
+ * @dev: the PCI device being added
+ *
+ * Permits the platform to provide architecture specific functionality when
+ * devices are added. This is the default implementation. Architecture
+ * implementations can override this.
+ */
+int __attribute__ ((weak)) pcibios_add_device (struct pci_dev *dev)
+{
+ return 0;
+}
+
/**
* pcibios_disable_device - disable arch specific PCI resources for device dev
* @dev: the PCI device to disable
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/rom.c ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/rom.c
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/rom.c 2012-07-21 16:58:29.000000000 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/drivers/pci/rom.c 2012-08-22 15:25:40.531244893 -0400
@@ -126,6 +126,12 @@
/* primary video rom always starts here */
start = (loff_t)0xC0000;
*size = 0x20000; /* cover C000:0 through E000:0 */
+ /*
+ * Some devices may provide ROMs via a source other than the BAR
+ */
+ } else if (pdev->rom && pdev->romlen) {
+ *size = pdev->romlen;
+ return phys_to_virt(pdev->rom);
} else {
if (res->flags &
(IORESOURCE_ROM_COPY | IORESOURCE_ROM_BIOS_COPY)) {
@@ -219,7 +225,8 @@
if (res->flags & (IORESOURCE_ROM_COPY | IORESOURCE_ROM_BIOS_COPY))
return;
- iounmap(rom);
+ if (!pdev->rom || !pdev->romlen)
+ iounmap(rom);
/* Disable again before continuing, leave enabled if pci=rom */
if (!(res->flags & (IORESOURCE_ROM_ENABLE | IORESOURCE_ROM_SHADOW)))
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/include/linux/efi.h ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/include/linux/efi.h
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/include/linux/efi.h 2012-08-22 15:24:49.550972911 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/include/linux/efi.h 2012-08-22 15:25:40.533244906 -0400
@@ -196,6 +196,77 @@
void *create_event_ex;
} efi_boot_services_t;
+typedef enum {
+ EfiPciIoWidthUint8,
+ EfiPciIoWidthUint16,
+ EfiPciIoWidthUint32,
+ EfiPciIoWidthUint64,
+ EfiPciIoWidthFifoUint8,
+ EfiPciIoWidthFifoUint16,
+ EfiPciIoWidthFifoUint32,
+ EfiPciIoWidthFifoUint64,
+ EfiPciIoWidthFillUint8,
+ EfiPciIoWidthFillUint16,
+ EfiPciIoWidthFillUint32,
+ EfiPciIoWidthFillUint64,
+ EfiPciIoWidthMaximum
+} EFI_PCI_IO_PROTOCOL_WIDTH;
+
+typedef enum {
+ EfiPciIoAttributeOperationGet,
+ EfiPciIoAttributeOperationSet,
+ EfiPciIoAttributeOperationEnable,
+ EfiPciIoAttributeOperationDisable,
+ EfiPciIoAttributeOperationSupported,
+ EfiPciIoAttributeOperationMaximum
+} EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
+
+
+typedef struct {
+ void *read;
+ void *write;
+} efi_pci_io_protocol_access_t;
+
+typedef struct {
+ void *poll_mem;
+ void *poll_io;
+ efi_pci_io_protocol_access_t mem;
+ efi_pci_io_protocol_access_t io;
+ efi_pci_io_protocol_access_t pci;
+ void *copy_mem;
+ void *map;
+ void *unmap;
+ void *allocate_buffer;
+ void *free_buffer;
+ void *flush;
+ void *get_location;
+ void *attributes;
+ void *get_bar_attributes;
+ void *set_bar_attributes;
+ uint64_t romsize;
+ void *romimage;
+} efi_pci_io_protocol;
+
+#define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
+#define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
+#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
+#define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
+#define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
+#define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
+#define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
+#define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
+#define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
+#define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
+#define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
+#define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
+#define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
+#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
+#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
+#define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
+#define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
+#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
+#define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
+
/*
* Types and defines for EFI ResetSystem
*/
diff -ur linux-3.6.0-0.rc2.git2.1.fc18.x86_64/include/linux/pci.h ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/include/linux/pci.h
--- linux-3.6.0-0.rc2.git2.1.fc18.x86_64/include/linux/pci.h 2012-08-22 15:24:48.703968392 -0400
+++ ../kernel-3.5.fc18.bak/linux-3.6.0-0.rc2.git2.1.fc18.x86_64/include/linux/pci.h 2012-08-22 15:25:40.534244910 -0400
@@ -355,6 +355,8 @@
};
struct pci_ats *ats; /* Address Translation Service */
#endif
+ void *rom; /* Physical pointer to ROM if it's not from the BAR */
+ size_t romlen; /* Length of ROM if it's not from the BAR */
};
static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
@@ -1582,6 +1584,7 @@
void pcibios_set_master(struct pci_dev *dev);
int pcibios_set_pcie_reset_state(struct pci_dev *dev,
enum pcie_reset_state state);
+int pcibios_add_device(struct pci_dev *dev);
#ifdef CONFIG_PCI_MMCONFIG
extern void __init pci_mmcfg_early_init(void);
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