static bool radeon_read_bios(struct radeon_device *rdev)
{
- uint8_t __iomem *bios;
+ uint8_t __iomem *bios, val1, val2;
size_t size;
rdev->bios = NULL;
return false;
}
- if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) {
+ val1 = readb(&bios[0]);
+ val2 = readb(&bios[1]);
+
+ if (size == 0 || val1 != 0x55 || val2 != 0xaa) {
pci_unmap_rom(rdev->pdev, bios);
return false;
}
- rdev->bios = kmemdup(bios, size, GFP_KERNEL);
+ rdev->bios = kzalloc(size, GFP_KERNEL);
if (rdev->bios == NULL) {
pci_unmap_rom(rdev->pdev, bios);
return false;
}
+ memcpy_fromio(rdev->bios, bios, size);
pci_unmap_rom(rdev->pdev, bios);
return true;
}
+#ifdef CONFIG_ACPI
/* ATRM is used to get the BIOS on the discrete cards in
* dual-gpu systems.
*/
+/* retrieve the ROM in 4k blocks */
+#define ATRM_BIOS_PAGE 4096
+/**
+ * radeon_atrm_call - fetch a chunk of the vbios
+ *
+ * @atrm_handle: acpi ATRM handle
+ * @bios: vbios image pointer
+ * @offset: offset of vbios image data to fetch
+ * @len: length of vbios image data to fetch
+ *
+ * Executes ATRM to fetch a chunk of the discrete
+ * vbios image on PX systems (all asics).
+ * Returns the length of the buffer fetched.
+ */
+static int radeon_atrm_call(acpi_handle atrm_handle, uint8_t *bios,
+ int offset, int len)
+{
+ acpi_status status;
+ union acpi_object atrm_arg_elements[2], *obj;
+ struct acpi_object_list atrm_arg;
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
+
+ atrm_arg.count = 2;
+ atrm_arg.pointer = &atrm_arg_elements[0];
+
+ atrm_arg_elements[0].type = ACPI_TYPE_INTEGER;
+ atrm_arg_elements[0].integer.value = offset;
+
+ atrm_arg_elements[1].type = ACPI_TYPE_INTEGER;
+ atrm_arg_elements[1].integer.value = len;
+
+ status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer);
+ if (ACPI_FAILURE(status)) {
+ printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status));
+ return -ENODEV;
+ }
+
+ obj = (union acpi_object *)buffer.pointer;
+ memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);
+ len = obj->buffer.length;
+ kfree(buffer.pointer);
+ return len;
+}
+
static bool radeon_atrm_get_bios(struct radeon_device *rdev)
{
int ret;
int size = 256 * 1024;
int i;
+ struct pci_dev *pdev = NULL;
+ acpi_handle dhandle, atrm_handle;
+ acpi_status status;
+ bool found = false;
- if (!radeon_atrm_supported(rdev->pdev))
+ /* ATRM is for the discrete card only */
+ if (rdev->flags & RADEON_IS_IGP)
+ return false;
+
+ while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
+ dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+ if (!dhandle)
+ continue;
+
+ status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
+ if (!ACPI_FAILURE(status)) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
+ dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+ if (!dhandle)
+ continue;
+
+ status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
+ if (!ACPI_FAILURE(status)) {
+ found = true;
+ break;
+ }
+ }
+ }
+
+ if (!found)
return false;
rdev->bios = kmalloc(size, GFP_KERNEL);
}
for (i = 0; i < size / ATRM_BIOS_PAGE; i++) {
- ret = radeon_atrm_get_bios_chunk(rdev->bios,
- (i * ATRM_BIOS_PAGE),
- ATRM_BIOS_PAGE);
- if (ret <= 0)
+ ret = radeon_atrm_call(atrm_handle,
+ rdev->bios,
+ (i * ATRM_BIOS_PAGE),
+ ATRM_BIOS_PAGE);
+ if (ret < ATRM_BIOS_PAGE)
break;
}
}
return true;
}
+#else
+static inline bool radeon_atrm_get_bios(struct radeon_device *rdev)
+{
+ return false;
+}
+#endif
static bool ni_read_disabled_bios(struct radeon_device *rdev)
{
#ifdef CONFIG_ACPI
static bool radeon_acpi_vfct_bios(struct radeon_device *rdev)
{
- bool ret = false;
struct acpi_table_header *hdr;
- /* acpi_get_table_with_size is not exported :( */
- acpi_size tbl_size = 0x7fffffff;
+ acpi_size tbl_size;
UEFI_ACPI_VFCT *vfct;
- GOP_VBIOS_CONTENT *vbios;
- VFCT_IMAGE_HEADER *vhdr;
+ unsigned offset;
- if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
+ if (!ACPI_SUCCESS(acpi_get_table_with_size("VFCT", 1, &hdr, &tbl_size)))
return false;
if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n");
- goto out_unmap;
+ return false;
}
vfct = (UEFI_ACPI_VFCT *)hdr;
- if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) > tbl_size) {
- DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n");
- goto out_unmap;
- }
+ offset = vfct->VBIOSImageOffset;
- vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + vfct->VBIOSImageOffset);
- vhdr = &vbios->VbiosHeader;
- DRM_INFO("ACPI VFCT contains a BIOS for %02x:%02x.%d %04x:%04x, size %d\n",
- vhdr->PCIBus, vhdr->PCIDevice, vhdr->PCIFunction,
- vhdr->VendorID, vhdr->DeviceID, vhdr->ImageLength);
-
- if (vhdr->PCIBus != rdev->pdev->bus->number ||
- vhdr->PCIDevice != PCI_SLOT(rdev->pdev->devfn) ||
- vhdr->PCIFunction != PCI_FUNC(rdev->pdev->devfn) ||
- vhdr->VendorID != rdev->pdev->vendor ||
- vhdr->DeviceID != rdev->pdev->device) {
- DRM_INFO("ACPI VFCT table is not for this card\n");
- goto out_unmap;
- };
-
- if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) + vhdr->ImageLength > tbl_size) {
- DRM_ERROR("ACPI VFCT image truncated\n");
- goto out_unmap;
- }
+ while (offset < tbl_size) {
+ GOP_VBIOS_CONTENT *vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + offset);
+ VFCT_IMAGE_HEADER *vhdr = &vbios->VbiosHeader;
- rdev->bios = kmemdup(&vbios->VbiosContent, vhdr->ImageLength, GFP_KERNEL);
- ret = !!rdev->bios;
+ offset += sizeof(VFCT_IMAGE_HEADER);
+ if (offset > tbl_size) {
+ DRM_ERROR("ACPI VFCT image header truncated\n");
+ return false;
+ }
-out_unmap:
- /* uh, no idea what to do here... */
- return ret;
+ offset += vhdr->ImageLength;
+ if (offset > tbl_size) {
+ DRM_ERROR("ACPI VFCT image truncated\n");
+ return false;
+ }
+
+ if (vhdr->ImageLength &&
+ vhdr->PCIBus == rdev->pdev->bus->number &&
+ vhdr->PCIDevice == PCI_SLOT(rdev->pdev->devfn) &&
+ vhdr->PCIFunction == PCI_FUNC(rdev->pdev->devfn) &&
+ vhdr->VendorID == rdev->pdev->vendor &&
+ vhdr->DeviceID == rdev->pdev->device) {
+ rdev->bios = kmemdup(&vbios->VbiosContent,
+ vhdr->ImageLength,
+ GFP_KERNEL);
+
+ if (!rdev->bios) {
+ kfree(rdev->bios);
+ return false;
+ }
+ return true;
+ }
+ }
+
+ DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n");
+ return false;
}
#else
static inline bool radeon_acpi_vfct_bios(struct radeon_device *rdev)