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Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
-rw-r--r--drivers/gpu/drm/ast/ast_main.c527
1 files changed, 527 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
new file mode 100644
index 000000000000..95ae55b8214b
--- /dev/null
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -0,0 +1,527 @@
+/*
+ * 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 "drmP.h"
+#include "ast_drv.h"
+
+
+#include "drm_fb_helper.h"
+#include "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)
+{
+ struct ast_private *ast = dev->dev_private;
+
+ if (dev->pdev->device == PCI_CHIP_AST1180) {
+ ast->chip = AST1100;
+ DRM_INFO("AST 1180 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 = 2000;
+ DRM_INFO("AST 2000 detected\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 & 0x400)
+ ast->dram_bus_width = 16;
+ else
+ ast->dram_bus_width = 32;
+
+ if (ast->chip == AST2300) {
+ 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;
+}
+
+uint32_t ast_get_max_dclk(struct drm_device *dev, int bpp)
+{
+ struct ast_private *ast = dev->dev_private;
+ uint32_t dclk, jreg;
+ uint32_t dram_bus_width, mclk, dram_bandwidth, actual_dram_bandwidth, dram_efficency = 500;
+
+ dram_bus_width = ast->dram_bus_width;
+ mclk = ast->mclk;
+
+ if (ast->chip == AST2100 ||
+ ast->chip == AST1100 ||
+ ast->chip == AST2200 ||
+ ast->chip == AST2150 ||
+ ast->dram_bus_width == 16)
+ dram_efficency = 600;
+ else if (ast->chip == AST2300)
+ dram_efficency = 400;
+
+ dram_bandwidth = mclk * dram_bus_width * 2 / 8;
+ actual_dram_bandwidth = dram_bandwidth * dram_efficency / 1000;
+
+ if (ast->chip == AST1180)
+ dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
+ else {
+ jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
+ if ((jreg & 0x08) && (ast->chip == AST2000))
+ dclk = actual_dram_bandwidth / ((bpp + 1 + 16) / 8);
+ else if ((jreg & 0x08) && (bpp == 8))
+ dclk = actual_dram_bandwidth / ((bpp + 1 + 24) / 8);
+ else
+ dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
+ }
+
+ if (ast->chip == AST2100 ||
+ ast->chip == AST2200 ||
+ ast->chip == AST2300 ||
+ ast->chip == AST1180) {
+ if (dclk > 200)
+ dclk = 200;
+ } else {
+ if (dclk > 165)
+ dclk = 165;
+ }
+
+ return dclk;
+}
+
+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 int ast_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ struct drm_file *file,
+ unsigned int *handle)
+{
+ return -EINVAL;
+}
+
+static const struct drm_framebuffer_funcs ast_fb_funcs = {
+ .destroy = ast_user_framebuffer_destroy,
+ .create_handle = ast_user_framebuffer_create_handle,
+};
+
+
+int ast_framebuffer_init(struct drm_device *dev,
+ struct ast_framebuffer *ast_fb,
+ struct drm_mode_fb_cmd2 *mode_cmd,
+ struct drm_gem_object *obj)
+{
+ int ret;
+
+ ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
+ if (ret) {
+ DRM_ERROR("framebuffer init failed %d\n", ret);
+ return ret;
+ }
+ drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
+ ast_fb->obj = obj;
+ return 0;
+}
+
+static struct drm_framebuffer *
+ast_user_framebuffer_create(struct drm_device *dev,
+ struct drm_file *filp,
+ struct drm_mode_fb_cmd2 *mode_cmd)
+{
+ struct drm_gem_object *obj;
+ struct ast_framebuffer *ast_fb;
+ int ret;
+
+ obj = drm_gem_object_lookup(dev, 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;
+
+ 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;
+}
+
+int ast_driver_load(struct drm_device *dev, unsigned long flags)
+{
+ struct ast_private *ast;
+ 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;
+ }
+ ast->ioregs = pci_iomap(dev->pdev, 2, 0);
+ if (!ast->ioregs) {
+ ret = -EIO;
+ goto out_free;
+ }
+
+ ast_detect_chip(dev);
+
+ 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);
+ }
+
+ 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;
+
+ if (ast->chip == AST2100 ||
+ ast->chip == AST2200 ||
+ ast->chip == AST2300 ||
+ 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;
+
+ 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;
+}
+
+int ast_dumb_destroy(struct drm_file *file,
+ struct drm_device *dev,
+ uint32_t handle)
+{
+ return drm_gem_handle_delete(file, handle);
+}
+
+int ast_gem_init_object(struct drm_gem_object *obj)
+{
+ BUG();
+ return 0;
+}
+
+void ast_bo_unref(struct ast_bo **bo)
+{
+ struct ttm_buffer_object *tbo;
+
+ if ((*bo) == NULL)
+ return;
+
+ tbo = &((*bo)->bo);
+ ttm_bo_unref(&tbo);
+ if (tbo == NULL)
+ *bo = NULL;
+
+}
+void ast_gem_free_object(struct drm_gem_object *obj)
+{
+ struct ast_bo *ast_bo = gem_to_ast_bo(obj);
+
+ if (!ast_bo)
+ return;
+ ast_bo_unref(&ast_bo);
+}
+
+
+static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
+{
+ return bo->bo.addr_space_offset;
+}
+int
+ast_dumb_mmap_offset(struct drm_file *file,
+ struct drm_device *dev,
+ uint32_t handle,
+ uint64_t *offset)
+{
+ struct drm_gem_object *obj;
+ int ret;
+ struct ast_bo *bo;
+
+ mutex_lock(&dev->struct_mutex);
+ obj = drm_gem_object_lookup(dev, file, handle);
+ if (obj == NULL) {
+ ret = -ENOENT;
+ goto out_unlock;
+ }
+
+ bo = gem_to_ast_bo(obj);
+ *offset = ast_bo_mmap_offset(bo);
+
+ drm_gem_object_unreference(obj);
+ ret = 0;
+out_unlock:
+ mutex_unlock(&dev->struct_mutex);
+ return ret;
+
+}
+
generated by cgit (git 2.34.1) at 2024-05-03 02:10:18 +0000