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;
+
+}
+