[GitHub/mt8127/android_kernel_alcatel_ttab.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;

	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 = AST2000;
			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 & 0x40)
		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 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;
	dev->mode_config.fb_base = pci_resource_start(ast->dev->pdev, 0);

	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;

}
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;
	69
	70	if (dev->pdev->device == PCI_CHIP_AST1180) {
	71	ast->chip = AST1100;
	72	DRM_INFO("AST 1180 detected\n");
	73	} else {
	74	if (dev->pdev->revision >= 0x20) {
	75	ast->chip = AST2300;
	76	DRM_INFO("AST 2300 detected\n");
	77	} else if (dev->pdev->revision >= 0x10) {
	78	uint32_t data;
	79	ast_write32(ast, 0xf004, 0x1e6e0000);
	80	ast_write32(ast, 0xf000, 0x1);
	81
	82	data = ast_read32(ast, 0x1207c);
	83	switch (data & 0x0300) {
	84	case 0x0200:
	85	ast->chip = AST1100;
	86	DRM_INFO("AST 1100 detected\n");
	87	break;
	88	case 0x0100:
	89	ast->chip = AST2200;
	90	DRM_INFO("AST 2200 detected\n");
	91	break;
	92	case 0x0000:
	93	ast->chip = AST2150;
	94	DRM_INFO("AST 2150 detected\n");
	95	break;
	96	default:
	97	ast->chip = AST2100;
98	DRM_INFO("AST 2100 detected\n");
99	break;
100	}
101	ast->vga2_clone = false;
102	} else {
d287fccb	103	ast->chip = AST2000;
312fec14 DA	104	DRM_INFO("AST 2000 detected\n");
	105	}
	106	}
	107	return 0;
	108	}
	109
	110	static int ast_get_dram_info(struct drm_device *dev)
	111	{
	112	struct ast_private *ast = dev->dev_private;
	113	uint32_t data, data2;
	114	uint32_t denum, num, div, ref_pll;
	115
	116	ast_write32(ast, 0xf004, 0x1e6e0000);
	117	ast_write32(ast, 0xf000, 0x1);
	118
	119
	120	ast_write32(ast, 0x10000, 0xfc600309);
	121
	122	do {
	123	;
	124	} while (ast_read32(ast, 0x10000) != 0x01);
	125	data = ast_read32(ast, 0x10004);
	126
eed92d81	127	if (data & 0x40)
312fec14 DA	128	ast->dram_bus_width = 16;
	129	else
	130	ast->dram_bus_width = 32;
	131
	132	if (ast->chip == AST2300) {
	133	switch (data & 0x03) {
	134	case 0:
	135	ast->dram_type = AST_DRAM_512Mx16;
	136	break;
	137	default:
	138	case 1:
	139	ast->dram_type = AST_DRAM_1Gx16;
	140	break;
	141	case 2:
	142	ast->dram_type = AST_DRAM_2Gx16;
	143	break;
	144	case 3:
	145	ast->dram_type = AST_DRAM_4Gx16;
	146	break;
	147	}
	148	} else {
	149	switch (data & 0x0c) {
	150	case 0:
	151	case 4:
	152	ast->dram_type = AST_DRAM_512Mx16;
	153	break;
	154	case 8:
	155	if (data & 0x40)
	156	ast->dram_type = AST_DRAM_1Gx16;
	157	else
	158	ast->dram_type = AST_DRAM_512Mx32;
	159	break;
	160	case 0xc:
	161	ast->dram_type = AST_DRAM_1Gx32;
	162	break;
	163	}
	164	}
	165
	166	data = ast_read32(ast, 0x10120);
	167	data2 = ast_read32(ast, 0x10170);
	168	if (data2 & 0x2000)
	169	ref_pll = 14318;
	170	else
	171	ref_pll = 12000;
	172
	173	denum = data & 0x1f;
	174	num = (data & 0x3fe0) >> 5;
	175	data = (data & 0xc000) >> 14;
	176	switch (data) {
	177	case 3:
	178	div = 0x4;
	179	break;
	180	case 2:
	181	case 1:
	182	div = 0x2;
	183	break;
	184	default:
	185	div = 0x1;
	186	break;
	187	}
	188	ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
	189	return 0;
	190	}
	191
192	uint32_t ast_get_max_dclk(struct drm_device *dev, int bpp)
193	{
194	struct ast_private *ast = dev->dev_private;
195	uint32_t dclk, jreg;
196	uint32_t dram_bus_width, mclk, dram_bandwidth, actual_dram_bandwidth, dram_efficency = 500;
197
198	dram_bus_width = ast->dram_bus_width;
199	mclk = ast->mclk;
200
201	if (ast->chip == AST2100 \|\|
202	ast->chip == AST1100 \|\|
203	ast->chip == AST2200 \|\|
204	ast->chip == AST2150 \|\|
205	ast->dram_bus_width == 16)
206	dram_efficency = 600;
207	else if (ast->chip == AST2300)
208	dram_efficency = 400;
209
210	dram_bandwidth = mclk * dram_bus_width * 2 / 8;
211	actual_dram_bandwidth = dram_bandwidth * dram_efficency / 1000;
212
213	if (ast->chip == AST1180)
214	dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
215	else {
216	jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
217	if ((jreg & 0x08) && (ast->chip == AST2000))
218	dclk = actual_dram_bandwidth / ((bpp + 1 + 16) / 8);
219	else if ((jreg & 0x08) && (bpp == 8))
220	dclk = actual_dram_bandwidth / ((bpp + 1 + 24) / 8);
221	else
222	dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
223	}
224
225	if (ast->chip == AST2100 \|\|
226	ast->chip == AST2200 \|\|
227	ast->chip == AST2300 \|\|
228	ast->chip == AST1180) {
229	if (dclk > 200)
230	dclk = 200;
231	} else {
232	if (dclk > 165)
233	dclk = 165;
234	}
235
236	return dclk;
237	}
238
239	static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
240	{
241	struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
242	if (ast_fb->obj)
243	drm_gem_object_unreference_unlocked(ast_fb->obj);
244
245	drm_framebuffer_cleanup(fb);
246	kfree(fb);
247	}
248
312fec14 DA	249	static const struct drm_framebuffer_funcs ast_fb_funcs = {
312fec14 DA	250	.destroy = ast_user_framebuffer_destroy,
312fec14 DA	251	};
	252
	253
	254	int ast_framebuffer_init(struct drm_device *dev,
	255	struct ast_framebuffer *ast_fb,
	256	struct drm_mode_fb_cmd2 *mode_cmd,
	257	struct drm_gem_object *obj)
	258	{
	259	int ret;
	260
c7d73f6a DV	261	drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
c7d73f6a DV	262	ast_fb->obj = obj;
312fec14 DA	263	ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
	264	if (ret) {
	265	DRM_ERROR("framebuffer init failed %d\n", ret);
	266	return ret;
	267	}
312fec14 DA	268	return 0;
	269	}
	270
	271	static struct drm_framebuffer *
	272	ast_user_framebuffer_create(struct drm_device *dev,
	273	struct drm_file *filp,
	274	struct drm_mode_fb_cmd2 *mode_cmd)
	275	{
	276	struct drm_gem_object *obj;
	277	struct ast_framebuffer *ast_fb;
	278	int ret;
	279
	280	obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
	281	if (obj == NULL)
	282	return ERR_PTR(-ENOENT);
	283
	284	ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
	285	if (!ast_fb) {
	286	drm_gem_object_unreference_unlocked(obj);
	287	return ERR_PTR(-ENOMEM);
	288	}
	289
	290	ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
	291	if (ret) {
	292	drm_gem_object_unreference_unlocked(obj);
	293	kfree(ast_fb);
	294	return ERR_PTR(ret);
	295	}
	296	return &ast_fb->base;
	297	}
	298
	299	static const struct drm_mode_config_funcs ast_mode_funcs = {
	300	.fb_create = ast_user_framebuffer_create,
	301	};
	302
	303	static u32 ast_get_vram_info(struct drm_device *dev)
	304	{
	305	struct ast_private *ast = dev->dev_private;
	306	u8 jreg;
	307
	308	ast_open_key(ast);
	309
	310	jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
	311	switch (jreg & 3) {
	312	case 0: return AST_VIDMEM_SIZE_8M;
	313	case 1: return AST_VIDMEM_SIZE_16M;
	314	case 2: return AST_VIDMEM_SIZE_32M;
	315	case 3: return AST_VIDMEM_SIZE_64M;
	316	}
	317	return AST_VIDMEM_DEFAULT_SIZE;
	318	}
	319
	320	int ast_driver_load(struct drm_device *dev, unsigned long flags)
	321	{
	322	struct ast_private *ast;
	323	int ret = 0;
	324
	325	ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
	326	if (!ast)
	327	return -ENOMEM;
	328
	329	dev->dev_private = ast;
	330	ast->dev = dev;
	331
332	ast->regs = pci_iomap(dev->pdev, 1, 0);
333	if (!ast->regs) {
334	ret = -EIO;
335	goto out_free;
336	}
337	ast->ioregs = pci_iomap(dev->pdev, 2, 0);
338	if (!ast->ioregs) {
339	ret = -EIO;
340	goto out_free;
341	}
342
343	ast_detect_chip(dev);
344
345	if (ast->chip != AST1180) {
346	ast_get_dram_info(dev);
347	ast->vram_size = ast_get_vram_info(dev);
348	DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
349	}
350
351	ret = ast_mm_init(ast);
352	if (ret)
353	goto out_free;
354
355	drm_mode_config_init(dev);
356
357	dev->mode_config.funcs = (void *)&ast_mode_funcs;
358	dev->mode_config.min_width = 0;
359	dev->mode_config.min_height = 0;
360	dev->mode_config.preferred_depth = 24;
361	dev->mode_config.prefer_shadow = 1;
9f5bc010	362	dev->mode_config.fb_base = pci_resource_start(ast->dev->pdev, 0);
312fec14 DA	363
	364	if (ast->chip == AST2100 \|\|
	365	ast->chip == AST2200 \|\|
	366	ast->chip == AST2300 \|\|
	367	ast->chip == AST1180) {
	368	dev->mode_config.max_width = 1920;
	369	dev->mode_config.max_height = 2048;
	370	} else {
	371	dev->mode_config.max_width = 1600;
	372	dev->mode_config.max_height = 1200;
	373	}
	374
	375	ret = ast_mode_init(dev);
	376	if (ret)
	377	goto out_free;
	378
	379	ret = ast_fbdev_init(dev);
	380	if (ret)
	381	goto out_free;
	382
	383	return 0;
	384	out_free:
	385	kfree(ast);
	386	dev->dev_private = NULL;
	387	return ret;
	388	}
	389
	390	int ast_driver_unload(struct drm_device *dev)
	391	{
	392	struct ast_private *ast = dev->dev_private;
	393
	394	ast_mode_fini(dev);
	395	ast_fbdev_fini(dev);
	396	drm_mode_config_cleanup(dev);
	397
	398	ast_mm_fini(ast);
	399	pci_iounmap(dev->pdev, ast->ioregs);
	400	pci_iounmap(dev->pdev, ast->regs);
	401	kfree(ast);
	402	return 0;
	403	}
	404
	405	int ast_gem_create(struct drm_device *dev,
	406	u32 size, bool iskernel,
	407	struct drm_gem_object **obj)
	408	{
	409	struct ast_bo *astbo;
	410	int ret;
	411
	412	*obj = NULL;
	413
	414	size = roundup(size, PAGE_SIZE);
	415	if (size == 0)
	416	return -EINVAL;
	417
	418	ret = ast_bo_create(dev, size, 0, 0, &astbo);
	419	if (ret) {
	420	if (ret != -ERESTARTSYS)
	421	DRM_ERROR("failed to allocate GEM object\n");
	422	return ret;
	423	}
	424	*obj = &astbo->gem;
	425	return 0;
	426	}
427
428	int ast_dumb_create(struct drm_file *file,
429	struct drm_device *dev,
430	struct drm_mode_create_dumb *args)
431	{
432	int ret;
433	struct drm_gem_object *gobj;
434	u32 handle;
435
436	args->pitch = args->width * ((args->bpp + 7) / 8);
437	args->size = args->pitch * args->height;
438
439	ret = ast_gem_create(dev, args->size, false,
440	&gobj);
441	if (ret)
442	return ret;
443
444	ret = drm_gem_handle_create(file, gobj, &handle);
445	drm_gem_object_unreference_unlocked(gobj);
446	if (ret)
447	return ret;
448
449	args->handle = handle;
450	return 0;
451	}
452
453	int ast_dumb_destroy(struct drm_file *file,
454	struct drm_device *dev,
455	uint32_t handle)
456	{
457	return drm_gem_handle_delete(file, handle);
458	}
459
460	int ast_gem_init_object(struct drm_gem_object *obj)
461	{
462	BUG();
463	return 0;
464	}
465
466	void ast_bo_unref(struct ast_bo **bo)
467	{
468	struct ttm_buffer_object *tbo;
469
470	if ((*bo) == NULL)
471	return;
472
473	tbo = &((*bo)->bo);
474	ttm_bo_unref(&tbo);
475	if (tbo == NULL)
476	*bo = NULL;
477
478	}
479	void ast_gem_free_object(struct drm_gem_object *obj)
480	{
481	struct ast_bo *ast_bo = gem_to_ast_bo(obj);
482
483	if (!ast_bo)
484	return;
485	ast_bo_unref(&ast_bo);
486	}
487
488
489	static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
490	{
491	return bo->bo.addr_space_offset;
492	}
493	int
494	ast_dumb_mmap_offset(struct drm_file *file,
495	struct drm_device *dev,
496	uint32_t handle,
497	uint64_t *offset)
498	{
499	struct drm_gem_object *obj;
500	int ret;
501	struct ast_bo *bo;
502
503	mutex_lock(&dev->struct_mutex);
504	obj = drm_gem_object_lookup(dev, file, handle);
505	if (obj == NULL) {
506	ret = -ENOENT;
507	goto out_unlock;
508	}
509
510	bo = gem_to_ast_bo(obj);
511	*offset = ast_bo_mmap_offset(bo);
512
513	drm_gem_object_unreference(obj);
514	ret = 0;
515	out_unlock:
516	mutex_unlock(&dev->struct_mutex);
517	return ret;
518
519	}
520