| /* |
| * Copyright 2012 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| */ |
| /* |
| * Authors: Dave Airlie <airlied@redhat.com> |
| */ |
| #include <drm/drmP.h> |
| #include "ast_drv.h" |
| |
| |
| #include <drm/drm_fb_helper.h> |
| #include <drm/drm_crtc_helper.h> |
| |
| #include "ast_dram_tables.h" |
| |
| void ast_set_index_reg_mask(struct ast_private *ast, |
| uint32_t base, uint8_t index, |
| uint8_t mask, uint8_t val) |
| { |
| u8 tmp; |
| ast_io_write8(ast, base, index); |
| tmp = (ast_io_read8(ast, base + 1) & mask) | val; |
| ast_set_index_reg(ast, base, index, tmp); |
| } |
| |
| uint8_t ast_get_index_reg(struct ast_private *ast, |
| uint32_t base, uint8_t index) |
| { |
| uint8_t ret; |
| ast_io_write8(ast, base, index); |
| ret = ast_io_read8(ast, base + 1); |
| return ret; |
| } |
| |
| uint8_t ast_get_index_reg_mask(struct ast_private *ast, |
| uint32_t base, uint8_t index, uint8_t mask) |
| { |
| uint8_t ret; |
| ast_io_write8(ast, base, index); |
| ret = ast_io_read8(ast, base + 1) & mask; |
| return ret; |
| } |
| |
| |
| 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; |
| } |
| |
| static int ast_get_dram_info(struct drm_device *dev) |
| { |
| struct ast_private *ast = dev->dev_private; |
| uint32_t data, data2; |
| uint32_t denum, num, div, ref_pll; |
| |
| ast_write32(ast, 0xf004, 0x1e6e0000); |
| ast_write32(ast, 0xf000, 0x1); |
| |
| |
| ast_write32(ast, 0x10000, 0xfc600309); |
| |
| do { |
| ; |
| } while (ast_read32(ast, 0x10000) != 0x01); |
| data = ast_read32(ast, 0x10004); |
| |
| if (data & 0x40) |
| ast->dram_bus_width = 16; |
| else |
| ast->dram_bus_width = 32; |
| |
| if (ast->chip == AST2300 || ast->chip == AST2400) { |
| switch (data & 0x03) { |
| case 0: |
| ast->dram_type = AST_DRAM_512Mx16; |
| break; |
| default: |
| case 1: |
| ast->dram_type = AST_DRAM_1Gx16; |
| break; |
| case 2: |
| ast->dram_type = AST_DRAM_2Gx16; |
| break; |
| case 3: |
| ast->dram_type = AST_DRAM_4Gx16; |
| break; |
| } |
| } else { |
| switch (data & 0x0c) { |
| case 0: |
| case 4: |
| ast->dram_type = AST_DRAM_512Mx16; |
| break; |
| case 8: |
| if (data & 0x40) |
| ast->dram_type = AST_DRAM_1Gx16; |
| else |
| ast->dram_type = AST_DRAM_512Mx32; |
| break; |
| case 0xc: |
| ast->dram_type = AST_DRAM_1Gx32; |
| break; |
| } |
| } |
| |
| data = ast_read32(ast, 0x10120); |
| data2 = ast_read32(ast, 0x10170); |
| if (data2 & 0x2000) |
| ref_pll = 14318; |
| else |
| ref_pll = 12000; |
| |
| denum = data & 0x1f; |
| num = (data & 0x3fe0) >> 5; |
| data = (data & 0xc000) >> 14; |
| switch (data) { |
| case 3: |
| div = 0x4; |
| break; |
| case 2: |
| case 1: |
| div = 0x2; |
| break; |
| default: |
| div = 0x1; |
| break; |
| } |
| ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000); |
| return 0; |
| } |
| |
| static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb) |
| { |
| struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb); |
| if (ast_fb->obj) |
| drm_gem_object_unreference_unlocked(ast_fb->obj); |
| |
| drm_framebuffer_cleanup(fb); |
| kfree(fb); |
| } |
| |
| static const struct drm_framebuffer_funcs ast_fb_funcs = { |
| .destroy = ast_user_framebuffer_destroy, |
| }; |
| |
| |
| int ast_framebuffer_init(struct drm_device *dev, |
| struct ast_framebuffer *ast_fb, |
| const struct drm_mode_fb_cmd2 *mode_cmd, |
| struct drm_gem_object *obj) |
| { |
| int ret; |
| |
| drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd); |
| ast_fb->obj = obj; |
| ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs); |
| if (ret) { |
| DRM_ERROR("framebuffer init failed %d\n", ret); |
| return ret; |
| } |
| return 0; |
| } |
| |
| static struct drm_framebuffer * |
| ast_user_framebuffer_create(struct drm_device *dev, |
| struct drm_file *filp, |
| const struct drm_mode_fb_cmd2 *mode_cmd) |
| { |
| struct drm_gem_object *obj; |
| struct ast_framebuffer *ast_fb; |
| int ret; |
| |
| obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); |
| if (obj == NULL) |
| return ERR_PTR(-ENOENT); |
| |
| ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL); |
| if (!ast_fb) { |
| drm_gem_object_unreference_unlocked(obj); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj); |
| if (ret) { |
| drm_gem_object_unreference_unlocked(obj); |
| kfree(ast_fb); |
| return ERR_PTR(ret); |
| } |
| return &ast_fb->base; |
| } |
| |
| static const struct drm_mode_config_funcs ast_mode_funcs = { |
| .fb_create = ast_user_framebuffer_create, |
| }; |
| |
| 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; |
| } |
| |
| int ast_driver_load(struct drm_device *dev, unsigned long flags) |
| { |
| struct ast_private *ast; |
| bool need_post; |
| int ret = 0; |
| |
| ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL); |
| if (!ast) |
| return -ENOMEM; |
| |
| dev->dev_private = ast; |
| ast->dev = dev; |
| |
| ast->regs = pci_iomap(dev->pdev, 1, 0); |
| if (!ast->regs) { |
| ret = -EIO; |
| goto out_free; |
| } |
| |
| /* |
| * If we don't have IO space at all, use MMIO now and |
| * assume the chip has MMIO enabled by default (rev 0x20 |
| * and higher). |
| */ |
| if (!(pci_resource_flags(dev->pdev, 2) & IORESOURCE_IO)) { |
| DRM_INFO("platform has no IO space, trying MMIO\n"); |
| ast->ioregs = ast->regs + AST_IO_MM_OFFSET; |
| } |
| |
| /* "map" IO regs if the above hasn't done so already */ |
| if (!ast->ioregs) { |
| ast->ioregs = pci_iomap(dev->pdev, 2, 0); |
| if (!ast->ioregs) { |
| ret = -EIO; |
| goto out_free; |
| } |
| } |
| |
| ast_detect_chip(dev, &need_post); |
| |
| if (ast->chip != AST1180) { |
| ast_get_dram_info(dev); |
| ast->vram_size = ast_get_vram_info(dev); |
| DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size); |
| } |
| |
| if (need_post) |
| ast_post_gpu(dev); |
| |
| ret = ast_mm_init(ast); |
| if (ret) |
| goto out_free; |
| |
| drm_mode_config_init(dev); |
| |
| dev->mode_config.funcs = (void *)&ast_mode_funcs; |
| dev->mode_config.min_width = 0; |
| dev->mode_config.min_height = 0; |
| dev->mode_config.preferred_depth = 24; |
| dev->mode_config.prefer_shadow = 1; |
| dev->mode_config.fb_base = pci_resource_start(ast->dev->pdev, 0); |
| |
| if (ast->chip == AST2100 || |
| ast->chip == AST2200 || |
| ast->chip == AST2300 || |
| ast->chip == AST2400 || |
| ast->chip == AST1180) { |
| dev->mode_config.max_width = 1920; |
| dev->mode_config.max_height = 2048; |
| } else { |
| dev->mode_config.max_width = 1600; |
| dev->mode_config.max_height = 1200; |
| } |
| |
| ret = ast_mode_init(dev); |
| if (ret) |
| goto out_free; |
| |
| ret = ast_fbdev_init(dev); |
| if (ret) |
| goto out_free; |
| |
| return 0; |
| out_free: |
| kfree(ast); |
| dev->dev_private = NULL; |
| return ret; |
| } |
| |
| int ast_driver_unload(struct drm_device *dev) |
| { |
| struct ast_private *ast = dev->dev_private; |
| |
| kfree(ast->dp501_fw_addr); |
| ast_mode_fini(dev); |
| ast_fbdev_fini(dev); |
| drm_mode_config_cleanup(dev); |
| |
| ast_mm_fini(ast); |
| pci_iounmap(dev->pdev, ast->ioregs); |
| pci_iounmap(dev->pdev, ast->regs); |
| kfree(ast); |
| return 0; |
| } |
| |
| int ast_gem_create(struct drm_device *dev, |
| u32 size, bool iskernel, |
| struct drm_gem_object **obj) |
| { |
| struct ast_bo *astbo; |
| int ret; |
| |
| *obj = NULL; |
| |
| size = roundup(size, PAGE_SIZE); |
| if (size == 0) |
| return -EINVAL; |
| |
| ret = ast_bo_create(dev, size, 0, 0, &astbo); |
| if (ret) { |
| if (ret != -ERESTARTSYS) |
| DRM_ERROR("failed to allocate GEM object\n"); |
| return ret; |
| } |
| *obj = &astbo->gem; |
| return 0; |
| } |
| |
| int ast_dumb_create(struct drm_file *file, |
| struct drm_device *dev, |
| struct drm_mode_create_dumb *args) |
| { |
| int ret; |
| struct drm_gem_object *gobj; |
| u32 handle; |
| |
| args->pitch = args->width * ((args->bpp + 7) / 8); |
| args->size = args->pitch * args->height; |
| |
| ret = ast_gem_create(dev, args->size, false, |
| &gobj); |
| if (ret) |
| return ret; |
| |
| ret = drm_gem_handle_create(file, gobj, &handle); |
| drm_gem_object_unreference_unlocked(gobj); |
| if (ret) |
| return ret; |
| |
| args->handle = handle; |
| return 0; |
| } |
| |
| static void ast_bo_unref(struct ast_bo **bo) |
| { |
| struct ttm_buffer_object *tbo; |
| |
| if ((*bo) == NULL) |
| return; |
| |
| tbo = &((*bo)->bo); |
| ttm_bo_unref(&tbo); |
| *bo = NULL; |
| } |
| |
| void ast_gem_free_object(struct drm_gem_object *obj) |
| { |
| struct ast_bo *ast_bo = gem_to_ast_bo(obj); |
| |
| ast_bo_unref(&ast_bo); |
| } |
| |
| |
| static inline u64 ast_bo_mmap_offset(struct ast_bo *bo) |
| { |
| return drm_vma_node_offset_addr(&bo->bo.vma_node); |
| } |
| int |
| ast_dumb_mmap_offset(struct drm_file *file, |
| struct drm_device *dev, |
| uint32_t handle, |
| uint64_t *offset) |
| { |
| struct drm_gem_object *obj; |
| struct ast_bo *bo; |
| |
| obj = drm_gem_object_lookup(file, handle); |
| if (obj == NULL) |
| return -ENOENT; |
| |
| bo = gem_to_ast_bo(obj); |
| *offset = ast_bo_mmap_offset(bo); |
| |
| drm_gem_object_unreference_unlocked(obj); |
| |
| return 0; |
| |
| } |
| |