static u32 ast_get_vram_info(struct drm_device *dev) { struct ast_private *ast = dev->dev_private; u8 jreg; u32 vram_size; ast_open_key(ast); vram_size = AST_VIDMEM_DEFAULT_SIZE; jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff); switch (jreg & 3) { case 0: vram_size = AST_VIDMEM_SIZE_8M; break; case 1: vram_size = AST_VIDMEM_SIZE_16M; break; case 2: vram_size = AST_VIDMEM_SIZE_32M; break; case 3: vram_size = AST_VIDMEM_SIZE_64M; break; } jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xff); switch (jreg & 0x03) { case 1: vram_size -= 0x100000; break; case 2: vram_size -= 0x200000; break; case 3: vram_size -= 0x400000; break; } return vram_size; }
static u32 ast_get_vram_info(struct drm_device *dev) { struct ast_private *ast = dev->dev_private; u8 jreg; ast_open_key(ast); jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff); switch (jreg & 3) { case 0: return AST_VIDMEM_SIZE_8M; case 1: return AST_VIDMEM_SIZE_16M; case 2: return AST_VIDMEM_SIZE_32M; case 3: return AST_VIDMEM_SIZE_64M; } return AST_VIDMEM_DEFAULT_SIZE; }
static int ast_detect_chip(struct drm_device *dev, bool *need_post) { struct ast_private *ast = dev->dev_private; uint32_t data, jreg; ast_open_key(ast); if (dev->pdev->device == PCI_CHIP_AST1180) { ast->chip = AST1100; DRM_INFO("AST 1180 detected\n"); } else { if (dev->pdev->revision >= 0x30) { ast->chip = AST2400; DRM_INFO("AST 2400 detected\n"); } else if (dev->pdev->revision >= 0x20) { ast->chip = AST2300; DRM_INFO("AST 2300 detected\n"); } else if (dev->pdev->revision >= 0x10) { uint32_t data; ast_write32(ast, 0xf004, 0x1e6e0000); ast_write32(ast, 0xf000, 0x1); data = ast_read32(ast, 0x1207c); switch (data & 0x0300) { case 0x0200: ast->chip = AST1100; DRM_INFO("AST 1100 detected\n"); break; case 0x0100: ast->chip = AST2200; DRM_INFO("AST 2200 detected\n"); break; case 0x0000: ast->chip = AST2150; DRM_INFO("AST 2150 detected\n"); break; default: ast->chip = AST2100; DRM_INFO("AST 2100 detected\n"); break; } ast->vga2_clone = false; } else { ast->chip = AST2000; DRM_INFO("AST 2000 detected\n"); } } /* * If VGA isn't enabled, we need to enable now or subsequent * access to the scratch registers will fail. We also inform * our caller that it needs to POST the chip * (Assumption: VGA not enabled -> need to POST) */ if (!ast_is_vga_enabled(dev)) { ast_enable_vga(dev); ast_enable_mmio(dev); DRM_INFO("VGA not enabled on entry, requesting chip POST\n"); *need_post = true; } else *need_post = false; /* Check if we support wide screen */ switch (ast->chip) { case AST1180: ast->support_wide_screen = true; break; case AST2000: ast->support_wide_screen = false; break; default: jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff); if (!(jreg & 0x80)) ast->support_wide_screen = true; else if (jreg & 0x01) ast->support_wide_screen = true; else { ast->support_wide_screen = false; /* Read SCU7c (silicon revision register) */ ast_write32(ast, 0xf004, 0x1e6e0000); ast_write32(ast, 0xf000, 0x1); data = ast_read32(ast, 0x1207c); data &= 0x300; if (ast->chip == AST2300 && data == 0x0) /* ast1300 */ ast->support_wide_screen = true; if (ast->chip == AST2400 && data == 0x100) /* ast1400 */ ast->support_wide_screen = true; } break; } /* Check 3rd Tx option (digital output afaik) */ ast->tx_chip_type = AST_TX_NONE; /* * VGACRA3 Enhanced Color Mode Register, check if DVO is already * enabled, in that case, assume we have a SIL164 TMDS transmitter * * Don't make that assumption if we the chip wasn't enabled and * is at power-on reset, otherwise we'll incorrectly "detect" a * SIL164 when there is none. */ if (!*need_post) { jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xff); if (jreg & 0x80) ast->tx_chip_type = AST_TX_SIL164; } if ((ast->chip == AST2300) || (ast->chip == AST2400)) { /* * On AST2300 and 2400, look the configuration set by the SoC in * the SOC scratch register #1 bits 11:8 (interestingly marked * as "reserved" in the spec) */ jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff); switch (jreg) { case 0x04: ast->tx_chip_type = AST_TX_SIL164; break; case 0x08: ast->dp501_fw_addr = kzalloc(32*1024, GFP_KERNEL); if (ast->dp501_fw_addr) { /* backup firmware */ if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) { kfree(ast->dp501_fw_addr); ast->dp501_fw_addr = NULL; } } /* fallthrough */ case 0x0c: ast->tx_chip_type = AST_TX_DP501; } } /* Print stuff for diagnostic purposes */ switch(ast->tx_chip_type) { case AST_TX_SIL164: DRM_INFO("Using Sil164 TMDS transmitter\n"); break; case AST_TX_DP501: DRM_INFO("Using DP501 DisplayPort transmitter\n"); break; default: DRM_INFO("Analog VGA only\n"); } return 0; }