[deliverable/linux.git] / drivers / gpu / drm / ast / ast_main.c

/*
 * 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)
{
	struct ast_private *ast = dev->dev_private;
	uint32_t data, jreg;

	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 = 2000;
			DRM_INFO("AST 2000 detected\n");
		}
	}

	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;
			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;
	}

	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 || 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,
			 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,
	       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 == 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;

	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);
	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 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;
	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;

}
Commit	Line	Data
312fec14 DA	1	/*
	2	* Copyright 2012 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the
	6	* "Software"), to deal in the Software without restriction, including
	7	* without limitation the rights to use, copy, modify, merge, publish,
	8	* distribute, sub license, and/or sell copies of the Software, and to
	9	* permit persons to whom the Software is furnished to do so, subject to
	10	* the following conditions:
	11	*
	12	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	13	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	14	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	15	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	16	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	17	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	18	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	19	*
	20	* The above copyright notice and this permission notice (including the
	21	* next paragraph) shall be included in all copies or substantial portions
	22	* of the Software.
	23	*
	24	*/
	25	/*
	26	* Authors: Dave Airlie <airlied@redhat.com>
	27	*/
760285e7	28	#include <drm/drmP.h>
312fec14 DA	29	#include "ast_drv.h"
	30
	31
760285e7 DH	32	#include <drm/drm_fb_helper.h>
760285e7 DH	33	#include <drm/drm_crtc_helper.h>
312fec14 DA	34
	35	#include "ast_dram_tables.h"
	36
	37	void ast_set_index_reg_mask(struct ast_private *ast,
	38	uint32_t base, uint8_t index,
	39	uint8_t mask, uint8_t val)
	40	{
	41	u8 tmp;
	42	ast_io_write8(ast, base, index);
	43	tmp = (ast_io_read8(ast, base + 1) & mask) \| val;
	44	ast_set_index_reg(ast, base, index, tmp);
	45	}
	46
	47	uint8_t ast_get_index_reg(struct ast_private *ast,
	48	uint32_t base, uint8_t index)
	49	{
	50	uint8_t ret;
	51	ast_io_write8(ast, base, index);
	52	ret = ast_io_read8(ast, base + 1);
	53	return ret;
	54	}
	55
	56	uint8_t ast_get_index_reg_mask(struct ast_private *ast,
	57	uint32_t base, uint8_t index, uint8_t mask)
	58	{
	59	uint8_t ret;
	60	ast_io_write8(ast, base, index);
	61	ret = ast_io_read8(ast, base + 1) & mask;
	62	return ret;
	63	}
	64
	65
	66	static int ast_detect_chip(struct drm_device *dev)
	67	{
	68	struct ast_private *ast = dev->dev_private;
f1f62f2c	69	uint32_t data, jreg;
312fec14 DA	70
	71	if (dev->pdev->device == PCI_CHIP_AST1180) {
	72	ast->chip = AST1100;
	73	DRM_INFO("AST 1180 detected\n");
	74	} else {
1453bf4c DA	75	if (dev->pdev->revision >= 0x30) {
	76	ast->chip = AST2400;
	77	DRM_INFO("AST 2400 detected\n");
	78	} else if (dev->pdev->revision >= 0x20) {
312fec14 DA	79	ast->chip = AST2300;
	80	DRM_INFO("AST 2300 detected\n");
	81	} else if (dev->pdev->revision >= 0x10) {
	82	uint32_t data;
	83	ast_write32(ast, 0xf004, 0x1e6e0000);
	84	ast_write32(ast, 0xf000, 0x1);
	85
	86	data = ast_read32(ast, 0x1207c);
	87	switch (data & 0x0300) {
	88	case 0x0200:
	89	ast->chip = AST1100;
	90	DRM_INFO("AST 1100 detected\n");
	91	break;
	92	case 0x0100:
	93	ast->chip = AST2200;
	94	DRM_INFO("AST 2200 detected\n");
	95	break;
	96	case 0x0000:
	97	ast->chip = AST2150;
	98	DRM_INFO("AST 2150 detected\n");
	99	break;
	100	default:
	101	ast->chip = AST2100;
	102	DRM_INFO("AST 2100 detected\n");
	103	break;
	104	}
	105	ast->vga2_clone = false;
	106	} else {
	107	ast->chip = 2000;
	108	DRM_INFO("AST 2000 detected\n");
	109	}
	110	}
f1f62f2c DA	111
	112	switch (ast->chip) {
	113	case AST1180:
	114	ast->support_wide_screen = true;
	115	break;
	116	case AST2000:
	117	ast->support_wide_screen = false;
	118	break;
	119	default:
	120	jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
	121	if (!(jreg & 0x80))
	122	ast->support_wide_screen = true;
	123	else if (jreg & 0x01)
	124	ast->support_wide_screen = true;
	125	else {
	126	ast->support_wide_screen = false;
1453bf4c DA	127	ast_write32(ast, 0xf004, 0x1e6e0000);
	128	ast_write32(ast, 0xf000, 0x1);
	129	data = ast_read32(ast, 0x1207c);
	130	data &= 0x300;
	131	if (ast->chip == AST2300 && data == 0x0) /* ast1300 */
	132	ast->support_wide_screen = true;
	133	if (ast->chip == AST2400 && data == 0x100) /* ast1400 */
	134	ast->support_wide_screen = true;
f1f62f2c DA	135	}
	136	break;
	137	}
	138
312fec14 DA	139	return 0;
	140	}
	141
	142	static int ast_get_dram_info(struct drm_device *dev)
	143	{
	144	struct ast_private *ast = dev->dev_private;
	145	uint32_t data, data2;
	146	uint32_t denum, num, div, ref_pll;
	147
	148	ast_write32(ast, 0xf004, 0x1e6e0000);
	149	ast_write32(ast, 0xf000, 0x1);
	150
	151
	152	ast_write32(ast, 0x10000, 0xfc600309);
	153
	154	do {
	155	;
	156	} while (ast_read32(ast, 0x10000) != 0x01);
	157	data = ast_read32(ast, 0x10004);
	158
	159	if (data & 0x400)
	160	ast->dram_bus_width = 16;
	161	else
	162	ast->dram_bus_width = 32;
	163
1453bf4c	164	if (ast->chip == AST2300 \|\| ast->chip == AST2400) {
312fec14 DA	165	switch (data & 0x03) {
	166	case 0:
	167	ast->dram_type = AST_DRAM_512Mx16;
	168	break;
	169	default:
	170	case 1:
	171	ast->dram_type = AST_DRAM_1Gx16;
	172	break;
	173	case 2:
	174	ast->dram_type = AST_DRAM_2Gx16;
	175	break;
	176	case 3:
	177	ast->dram_type = AST_DRAM_4Gx16;
	178	break;
	179	}
	180	} else {
	181	switch (data & 0x0c) {
	182	case 0:
	183	case 4:
	184	ast->dram_type = AST_DRAM_512Mx16;
	185	break;
	186	case 8:
	187	if (data & 0x40)
	188	ast->dram_type = AST_DRAM_1Gx16;
	189	else
	190	ast->dram_type = AST_DRAM_512Mx32;
	191	break;
	192	case 0xc:
	193	ast->dram_type = AST_DRAM_1Gx32;
	194	break;
	195	}
	196	}
	197
	198	data = ast_read32(ast, 0x10120);
	199	data2 = ast_read32(ast, 0x10170);
	200	if (data2 & 0x2000)
	201	ref_pll = 14318;
	202	else
	203	ref_pll = 12000;
	204
	205	denum = data & 0x1f;
	206	num = (data & 0x3fe0) >> 5;
	207	data = (data & 0xc000) >> 14;
	208	switch (data) {
	209	case 3:
	210	div = 0x4;
	211	break;
	212	case 2:
	213	case 1:
	214	div = 0x2;
	215	break;
	216	default:
	217	div = 0x1;
	218	break;
	219	}
	220	ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
	221	return 0;
	222	}
	223
312fec14 DA	224	static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
	225	{
	226	struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
	227	if (ast_fb->obj)
	228	drm_gem_object_unreference_unlocked(ast_fb->obj);
	229
	230	drm_framebuffer_cleanup(fb);
	231	kfree(fb);
	232	}
	233
312fec14 DA	234	static const struct drm_framebuffer_funcs ast_fb_funcs = {
312fec14 DA	235	.destroy = ast_user_framebuffer_destroy,
312fec14 DA	236	};
	237
	238
	239	int ast_framebuffer_init(struct drm_device *dev,
	240	struct ast_framebuffer *ast_fb,
	241	struct drm_mode_fb_cmd2 *mode_cmd,
	242	struct drm_gem_object *obj)
	243	{
	244	int ret;
	245
c7d73f6a DV	246	drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
c7d73f6a DV	247	ast_fb->obj = obj;
312fec14 DA	248	ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
	249	if (ret) {
	250	DRM_ERROR("framebuffer init failed %d\n", ret);
	251	return ret;
	252	}
312fec14 DA	253	return 0;
	254	}
	255
	256	static struct drm_framebuffer *
	257	ast_user_framebuffer_create(struct drm_device *dev,
	258	struct drm_file *filp,
	259	struct drm_mode_fb_cmd2 *mode_cmd)
	260	{
	261	struct drm_gem_object *obj;
	262	struct ast_framebuffer *ast_fb;
	263	int ret;
	264
	265	obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
	266	if (obj == NULL)
	267	return ERR_PTR(-ENOENT);
	268
	269	ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
	270	if (!ast_fb) {
	271	drm_gem_object_unreference_unlocked(obj);
	272	return ERR_PTR(-ENOMEM);
	273	}
	274
	275	ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
	276	if (ret) {
	277	drm_gem_object_unreference_unlocked(obj);
	278	kfree(ast_fb);
	279	return ERR_PTR(ret);
	280	}
	281	return &ast_fb->base;
	282	}
	283
	284	static const struct drm_mode_config_funcs ast_mode_funcs = {
	285	.fb_create = ast_user_framebuffer_create,
	286	};
	287
	288	static u32 ast_get_vram_info(struct drm_device *dev)
	289	{
	290	struct ast_private *ast = dev->dev_private;
	291	u8 jreg;
	292
	293	ast_open_key(ast);
	294
	295	jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
	296	switch (jreg & 3) {
	297	case 0: return AST_VIDMEM_SIZE_8M;
	298	case 1: return AST_VIDMEM_SIZE_16M;
	299	case 2: return AST_VIDMEM_SIZE_32M;
	300	case 3: return AST_VIDMEM_SIZE_64M;
	301	}
	302	return AST_VIDMEM_DEFAULT_SIZE;
	303	}
	304
	305	int ast_driver_load(struct drm_device *dev, unsigned long flags)
	306	{
	307	struct ast_private *ast;
	308	int ret = 0;
	309
	310	ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
	311	if (!ast)
	312	return -ENOMEM;
	313
	314	dev->dev_private = ast;
	315	ast->dev = dev;
	316
317	ast->regs = pci_iomap(dev->pdev, 1, 0);
318	if (!ast->regs) {
319	ret = -EIO;
320	goto out_free;
321	}
322	ast->ioregs = pci_iomap(dev->pdev, 2, 0);
323	if (!ast->ioregs) {
324	ret = -EIO;
325	goto out_free;
326	}
327
328	ast_detect_chip(dev);
329
330	if (ast->chip != AST1180) {
331	ast_get_dram_info(dev);
332	ast->vram_size = ast_get_vram_info(dev);
333	DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
334	}
335
336	ret = ast_mm_init(ast);
337	if (ret)
338	goto out_free;
339
340	drm_mode_config_init(dev);
341
342	dev->mode_config.funcs = (void *)&ast_mode_funcs;
343	dev->mode_config.min_width = 0;
344	dev->mode_config.min_height = 0;
345	dev->mode_config.preferred_depth = 24;
346	dev->mode_config.prefer_shadow = 1;
347
348	if (ast->chip == AST2100 \|\|
349	ast->chip == AST2200 \|\|
350	ast->chip == AST2300 \|\|
1453bf4c	351	ast->chip == AST2400 \|\|
312fec14 DA	352	ast->chip == AST1180) {
	353	dev->mode_config.max_width = 1920;
	354	dev->mode_config.max_height = 2048;
	355	} else {
	356	dev->mode_config.max_width = 1600;
	357	dev->mode_config.max_height = 1200;
	358	}
	359
	360	ret = ast_mode_init(dev);
	361	if (ret)
	362	goto out_free;
	363
	364	ret = ast_fbdev_init(dev);
	365	if (ret)
	366	goto out_free;
	367
	368	return 0;
	369	out_free:
	370	kfree(ast);
	371	dev->dev_private = NULL;
	372	return ret;
	373	}
	374
	375	int ast_driver_unload(struct drm_device *dev)
	376	{
	377	struct ast_private *ast = dev->dev_private;
	378
	379	ast_mode_fini(dev);
	380	ast_fbdev_fini(dev);
	381	drm_mode_config_cleanup(dev);
	382
	383	ast_mm_fini(ast);
	384	pci_iounmap(dev->pdev, ast->ioregs);
	385	pci_iounmap(dev->pdev, ast->regs);
	386	kfree(ast);
	387	return 0;
	388	}
	389
	390	int ast_gem_create(struct drm_device *dev,
	391	u32 size, bool iskernel,
	392	struct drm_gem_object **obj)
	393	{
	394	struct ast_bo *astbo;
	395	int ret;
	396
	397	*obj = NULL;
	398
	399	size = roundup(size, PAGE_SIZE);
	400	if (size == 0)
	401	return -EINVAL;
	402
	403	ret = ast_bo_create(dev, size, 0, 0, &astbo);
	404	if (ret) {
	405	if (ret != -ERESTARTSYS)
	406	DRM_ERROR("failed to allocate GEM object\n");
	407	return ret;
	408	}
	409	*obj = &astbo->gem;
	410	return 0;
	411	}
	412
	413	int ast_dumb_create(struct drm_file *file,
	414	struct drm_device *dev,
	415	struct drm_mode_create_dumb *args)
416	{
417	int ret;
418	struct drm_gem_object *gobj;
419	u32 handle;
420
421	args->pitch = args->width * ((args->bpp + 7) / 8);
422	args->size = args->pitch * args->height;
423
424	ret = ast_gem_create(dev, args->size, false,
425	&gobj);
426	if (ret)
427	return ret;
428
429	ret = drm_gem_handle_create(file, gobj, &handle);
430	drm_gem_object_unreference_unlocked(gobj);
431	if (ret)
432	return ret;
433
434	args->handle = handle;
435	return 0;
436	}
437
f6109803	438	static void ast_bo_unref(struct ast_bo **bo)
312fec14 DA	439	{
	440	struct ttm_buffer_object *tbo;
	441
	442	if ((*bo) == NULL)
	443	return;
	444
	445	tbo = &((*bo)->bo);
	446	ttm_bo_unref(&tbo);
	447	if (tbo == NULL)
	448	*bo = NULL;
	449
	450	}
	451	void ast_gem_free_object(struct drm_gem_object *obj)
	452	{
	453	struct ast_bo *ast_bo = gem_to_ast_bo(obj);
	454
	455	if (!ast_bo)
	456	return;
	457	ast_bo_unref(&ast_bo);
	458	}
	459
	460
	461	static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
	462	{
72525b3f	463	return drm_vma_node_offset_addr(&bo->bo.vma_node);
312fec14 DA	464	}
	465	int
	466	ast_dumb_mmap_offset(struct drm_file *file,
	467	struct drm_device *dev,
	468	uint32_t handle,
	469	uint64_t *offset)
	470	{
	471	struct drm_gem_object *obj;
	472	int ret;
	473	struct ast_bo *bo;
	474
	475	mutex_lock(&dev->struct_mutex);
	476	obj = drm_gem_object_lookup(dev, file, handle);
	477	if (obj == NULL) {
	478	ret = -ENOENT;
	479	goto out_unlock;
	480	}
	481
	482	bo = gem_to_ast_bo(obj);
	483	*offset = ast_bo_mmap_offset(bo);
	484
	485	drm_gem_object_unreference(obj);
	486	ret = 0;
	487	out_unlock:
	488	mutex_unlock(&dev->struct_mutex);
	489	return ret;
	490
	491	}
	492