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https://mirrors.bfsu.edu.cn/git/linux.git
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drm/nouveau/oldbios: remove shadowing support, use bios subdev's image
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs
parent
70c0f263cc
commit
cd42439da4
@ -65,247 +65,6 @@ static bool nv_cksum(const uint8_t *data, unsigned int length)
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return false;
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}
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static int
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score_vbios(struct nvbios *bios, const bool writeable)
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{
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if (!bios->data || bios->data[0] != 0x55 || bios->data[1] != 0xAA) {
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NV_TRACEWARN(bios->dev, "... BIOS signature not found\n");
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return 0;
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}
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if (nv_cksum(bios->data, bios->data[2] * 512)) {
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NV_TRACEWARN(bios->dev, "... BIOS checksum invalid\n");
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/* if a ro image is somewhat bad, it's probably all rubbish */
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return writeable ? 2 : 1;
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}
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NV_TRACE(bios->dev, "... appears to be valid\n");
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return 3;
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}
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static void
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bios_shadow_prom(struct nvbios *bios)
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{
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struct drm_device *dev = bios->dev;
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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u32 pcireg, access;
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u16 pcir;
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int i;
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/* enable access to rom */
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if (dev_priv->card_type >= NV_50)
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pcireg = 0x088050;
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else
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pcireg = NV_PBUS_PCI_NV_20;
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access = nv_mask(dev, pcireg, 0x00000001, 0x00000000);
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/* bail if no rom signature, with a workaround for a PROM reading
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* issue on some chipsets. the first read after a period of
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* inactivity returns the wrong result, so retry the first header
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* byte a few times before giving up as a workaround
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*/
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i = 16;
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do {
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if (nv_rd08(dev, NV_PROM_OFFSET + 0) == 0x55)
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break;
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} while (i--);
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if (!i || nv_rd08(dev, NV_PROM_OFFSET + 1) != 0xaa)
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goto out;
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/* additional check (see note below) - read PCI record header */
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pcir = nv_rd08(dev, NV_PROM_OFFSET + 0x18) |
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nv_rd08(dev, NV_PROM_OFFSET + 0x19) << 8;
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if (nv_rd08(dev, NV_PROM_OFFSET + pcir + 0) != 'P' ||
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nv_rd08(dev, NV_PROM_OFFSET + pcir + 1) != 'C' ||
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nv_rd08(dev, NV_PROM_OFFSET + pcir + 2) != 'I' ||
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nv_rd08(dev, NV_PROM_OFFSET + pcir + 3) != 'R')
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goto out;
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/* read entire bios image to system memory */
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bios->length = nv_rd08(dev, NV_PROM_OFFSET + 2) * 512;
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bios->data = kmalloc(bios->length, GFP_KERNEL);
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if (bios->data) {
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for (i = 0; i < bios->length; i++)
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bios->data[i] = nv_rd08(dev, NV_PROM_OFFSET + i);
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}
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out:
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/* disable access to rom */
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nv_wr32(dev, pcireg, access);
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}
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static void
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bios_shadow_pramin(struct nvbios *bios)
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{
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struct drm_device *dev = bios->dev;
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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u32 bar0 = 0;
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int i;
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if (dev_priv->card_type >= NV_50) {
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u64 addr = (u64)(nv_rd32(dev, 0x619f04) & 0xffffff00) << 8;
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if (!addr) {
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addr = (u64)nv_rd32(dev, 0x001700) << 16;
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addr += 0xf0000;
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}
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bar0 = nv_mask(dev, 0x001700, 0xffffffff, addr >> 16);
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}
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/* bail if no rom signature */
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if (nv_rd08(dev, NV_PRAMIN_OFFSET + 0) != 0x55 ||
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nv_rd08(dev, NV_PRAMIN_OFFSET + 1) != 0xaa)
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goto out;
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bios->length = nv_rd08(dev, NV_PRAMIN_OFFSET + 2) * 512;
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bios->data = kmalloc(bios->length, GFP_KERNEL);
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if (bios->data) {
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for (i = 0; i < bios->length; i++)
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bios->data[i] = nv_rd08(dev, NV_PRAMIN_OFFSET + i);
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}
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out:
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if (dev_priv->card_type >= NV_50)
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nv_wr32(dev, 0x001700, bar0);
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}
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static void
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bios_shadow_pci(struct nvbios *bios)
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{
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struct pci_dev *pdev = bios->dev->pdev;
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size_t length;
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if (!pci_enable_rom(pdev)) {
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void __iomem *rom = pci_map_rom(pdev, &length);
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if (rom && length) {
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bios->data = kmalloc(length, GFP_KERNEL);
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if (bios->data) {
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memcpy_fromio(bios->data, rom, length);
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bios->length = length;
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}
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}
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if (rom)
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pci_unmap_rom(pdev, rom);
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pci_disable_rom(pdev);
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}
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}
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static void
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bios_shadow_acpi(struct nvbios *bios)
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{
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struct pci_dev *pdev = bios->dev->pdev;
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int cnt = 65536 / ROM_BIOS_PAGE;
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int ret;
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if (!nouveau_acpi_rom_supported(pdev))
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return;
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bios->data = kmalloc(cnt * ROM_BIOS_PAGE, GFP_KERNEL);
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if (!bios->data)
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return;
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bios->length = 0;
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while (cnt--) {
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ret = nouveau_acpi_get_bios_chunk(bios->data, bios->length,
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ROM_BIOS_PAGE);
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if (ret != ROM_BIOS_PAGE)
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return;
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bios->length += ROM_BIOS_PAGE;
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}
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}
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struct methods {
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const char desc[8];
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void (*shadow)(struct nvbios *);
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const bool rw;
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int score;
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u32 size;
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u8 *data;
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};
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static bool
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bios_shadow(struct drm_device *dev)
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{
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struct methods shadow_methods[] = {
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{ "PRAMIN", bios_shadow_pramin, true, 0, 0, NULL },
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{ "PROM", bios_shadow_prom, false, 0, 0, NULL },
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{ "ACPI", bios_shadow_acpi, true, 0, 0, NULL },
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{ "PCIROM", bios_shadow_pci, true, 0, 0, NULL },
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{}
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};
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nvbios *bios = &dev_priv->vbios;
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struct methods *mthd, *best;
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const struct firmware *fw;
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char fname[32];
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int ret;
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if (nouveau_vbios) {
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/* try to match one of the built-in methods */
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mthd = shadow_methods;
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do {
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if (strcasecmp(nouveau_vbios, mthd->desc))
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continue;
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NV_INFO(dev, "VBIOS source: %s\n", mthd->desc);
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mthd->shadow(bios);
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mthd->score = score_vbios(bios, mthd->rw);
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if (mthd->score)
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return true;
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} while ((++mthd)->shadow);
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/* attempt to load firmware image */
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snprintf(fname, sizeof(fname), "nouveau/%s", nouveau_vbios);
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ret = request_firmware(&fw, fname, &dev->pdev->dev);
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if (ret == 0) {
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bios->length = fw->size;
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bios->data = kmemdup(fw->data, fw->size, GFP_KERNEL);
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release_firmware(fw);
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NV_INFO(dev, "VBIOS image: %s\n", nouveau_vbios);
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if (score_vbios(bios, 1))
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return true;
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kfree(bios->data);
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bios->data = NULL;
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}
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NV_ERROR(dev, "VBIOS source \'%s\' invalid\n", nouveau_vbios);
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}
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mthd = shadow_methods;
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do {
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NV_TRACE(dev, "Checking %s for VBIOS\n", mthd->desc);
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mthd->shadow(bios);
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mthd->score = score_vbios(bios, mthd->rw);
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mthd->size = bios->length;
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mthd->data = bios->data;
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bios->data = NULL;
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} while (mthd->score != 3 && (++mthd)->shadow);
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mthd = shadow_methods;
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best = mthd;
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do {
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if (mthd->score > best->score) {
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kfree(best->data);
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best = mthd;
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}
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} while ((++mthd)->shadow);
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if (best->score) {
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NV_TRACE(dev, "Using VBIOS from %s\n", best->desc);
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bios->length = best->size;
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bios->data = best->data;
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return true;
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}
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NV_ERROR(dev, "No valid VBIOS image found\n");
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return false;
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}
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struct init_tbl_entry {
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char *name;
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uint8_t id;
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@ -6400,7 +6159,7 @@ static bool NVInitVBIOS(struct drm_device *dev)
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spin_lock_init(&bios->lock);
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bios->dev = dev;
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return bios_shadow(dev);
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return _nv_bios(dev, &bios->data, &bios->length);
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}
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static int nouveau_parse_vbios_struct(struct drm_device *dev)
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@ -6564,6 +6323,4 @@ nouveau_bios_takedown(struct drm_device *dev)
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nouveau_mxm_fini(dev);
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nouveau_i2c_fini(dev);
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kfree(dev_priv->vbios.data);
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}
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@ -1,6 +1,8 @@
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#include "nouveau_drm.h"
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#include "nouveau_compat.h"
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#include <subdev/bios.h>
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void *nouveau_newpriv(struct drm_device *);
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u8
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@ -38,3 +40,13 @@ _nv_mask(struct drm_device *dev, u32 reg, u32 mask, u32 val)
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_nv_wr32(dev, reg, (tmp & ~mask) | val);
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return tmp;
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}
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bool
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_nv_bios(struct drm_device *dev, u8 **data, u32 *size)
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{
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struct nouveau_drm *drm = nouveau_newpriv(dev);
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struct nouveau_bios *bios = nouveau_bios(drm->device);
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*data = bios->data;
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*size = bios->size;
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return true;
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}
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@ -7,4 +7,6 @@ u32 _nv_rd32(struct drm_device *, u32);
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void _nv_wr32(struct drm_device *, u32, u32);
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u32 _nv_mask(struct drm_device *, u32, u32, u32);
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bool _nv_bios(struct drm_device *, u8 **, u32 *);
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#endif
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@ -44,10 +44,6 @@ MODULE_PARM_DESC(modeset, "Enable kernel modesetting");
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int nouveau_modeset = -1;
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module_param_named(modeset, nouveau_modeset, int, 0400);
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MODULE_PARM_DESC(vbios, "Override default VBIOS location");
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char *nouveau_vbios;
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module_param_named(vbios, nouveau_vbios, charp, 0400);
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MODULE_PARM_DESC(vram_pushbuf, "Force DMA push buffers to be in VRAM");
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int nouveau_vram_pushbuf;
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module_param_named(vram_pushbuf, nouveau_vram_pushbuf, int, 0400);
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@ -846,7 +846,6 @@ extern int nouveau_fbpercrtc;
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extern int nouveau_tv_disable;
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extern char *nouveau_tv_norm;
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extern int nouveau_reg_debug;
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extern char *nouveau_vbios;
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extern int nouveau_ignorelid;
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extern int nouveau_nofbaccel;
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extern int nouveau_noaccel;
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