/* r128_drv.c -- ATI Rage 128 driver -*- linux-c -*- * Created: Mon Dec 13 09:47:27 1999 by faith@precisioninsight.com */ /*- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * All Rights Reserved. * * 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, sublicense, * 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 above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * 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 NONINFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEMS 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. * * Authors: * Rickard E. (Rik) Faith * Gareth Hughes * */ #include "drmP.h" #include "drm.h" #include "r128_drm.h" #include "r128_drv.h" #include "drm_pciids.h" /* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */ static drm_pci_id_list_t r128_pciidlist[] = { r128_PCI_IDS }; static void r128_configure(drm_device_t *dev) { dev->driver.buf_priv_size = sizeof(drm_r128_buf_priv_t); dev->driver.preclose = r128_driver_preclose; dev->driver.lastclose = r128_driver_lastclose; dev->driver.vblank_wait = r128_driver_vblank_wait; dev->driver.irq_preinstall = r128_driver_irq_preinstall; dev->driver.irq_postinstall = r128_driver_irq_postinstall; dev->driver.irq_uninstall = r128_driver_irq_uninstall; dev->driver.irq_handler = r128_driver_irq_handler; dev->driver.dma_ioctl = r128_cce_buffers; dev->driver.ioctls = r128_ioctls; dev->driver.max_ioctl = r128_max_ioctl; dev->driver.name = DRIVER_NAME; dev->driver.desc = DRIVER_DESC; dev->driver.date = DRIVER_DATE; dev->driver.major = DRIVER_MAJOR; dev->driver.minor = DRIVER_MINOR; dev->driver.patchlevel = DRIVER_PATCHLEVEL; dev->driver.use_agp = 1; dev->driver.use_mtrr = 1; dev->driver.use_pci_dma = 1; dev->driver.use_sg = 1; dev->driver.use_dma = 1; dev->driver.use_irq = 1; dev->driver.use_vbl_irq = 1; } #ifdef __FreeBSD__ static int r128_probe(device_t dev) { return drm_probe(dev, r128_pciidlist); } static int r128_attach(device_t nbdev) { drm_device_t *dev = device_get_softc(nbdev); bzero(dev, sizeof(drm_device_t)); r128_configure(dev); return drm_attach(nbdev, r128_pciidlist); } static device_method_t r128_methods[] = { /* Device interface */ DEVMETHOD(device_probe, r128_probe), DEVMETHOD(device_attach, r128_attach), DEVMETHOD(device_detach, drm_detach), { 0, 0 } }; static driver_t r128_driver = { "drm", r128_methods, sizeof(drm_device_t) }; extern devclass_t drm_devclass; #if __FreeBSD_version >= 700010 DRIVER_MODULE(r128, vgapci, r128_driver, drm_devclass, 0, 0); #else DRIVER_MODULE(r128, pci, r128_driver, drm_devclass, 0, 0); #endif MODULE_DEPEND(r128, drm, 1, 1, 1); #elif defined(__NetBSD__) || defined(__OpenBSD__) #ifdef _LKM CFDRIVER_DECL(r128, DV_TTY, NULL); #else CFATTACH_DECL(r128, sizeof(drm_device_t), drm_probe, drm_attach, drm_detach, drm_activate); #endif #endif 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303

/**************************************************************************
 *
 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
 * All Rights Reserved.
 *
 * 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: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
 */

#include "drmP.h"
#include "i915_drm.h"
#include "i915_drv.h"

struct drm_ttm_backend *i915_create_ttm_backend_entry(struct drm_device *dev)
{
	return drm_agp_init_ttm(dev);
}

int i915_fence_type(struct drm_buffer_object *bo,
		     uint32_t *fclass,
		     uint32_t *type)
{
	if (bo->mem.proposed_flags & (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE))
		*type = 3;
	else
		*type = 1;
	return 0;
}

int i915_invalidate_caches(struct drm_device *dev, uint64_t flags)
{
	/*
	 * FIXME: Only emit once per batchbuffer submission.
	 */

	uint32_t flush_cmd = MI_NO_WRITE_FLUSH;

	if (flags & DRM_BO_FLAG_READ)
		flush_cmd |= MI_READ_FLUSH;
	if (flags & DRM_BO_FLAG_EXE)
		flush_cmd |= MI_EXE_FLUSH;

	return i915_emit_mi_flush(dev, flush_cmd);
}

int i915_init_mem_type(struct drm_device *dev, uint32_t type,
		       struct drm_mem_type_manager *man)
{
	switch (type) {
	case DRM_BO_MEM_LOCAL:
		man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
		    _DRM_FLAG_MEMTYPE_CACHED;
		man->drm_bus_maptype = 0;
		man->gpu_offset = 0;
		break;
	case DRM_BO_MEM_TT:
		if (!(drm_core_has_AGP(dev) && dev->agp)) {
			DRM_ERROR("AGP is not enabled for memory type %u\n",
				  (unsigned)type);
			return -EINVAL;
		}
		man->io_offset = dev->agp->agp_info.aper_base;
		man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
		man->io_addr = NULL;
		man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE |
		    _DRM_FLAG_MEMTYPE_CSELECT | _DRM_FLAG_NEEDS_IOREMAP;
		man->drm_bus_maptype = _DRM_AGP;
		man->gpu_offset = 0;
		break;
	case DRM_BO_MEM_PRIV0:
		if (!(drm_core_has_AGP(dev) && dev->agp)) {
			DRM_ERROR("AGP is not enabled for memory type %u\n",
				  (unsigned)type);
			return -EINVAL;
		}
		man->io_offset = dev->agp->agp_info.aper_base;
		man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024;
		man->io_addr = NULL;
		man->flags =  _DRM_FLAG_MEMTYPE_MAPPABLE |
		    _DRM_FLAG_MEMTYPE_FIXED | _DRM_FLAG_NEEDS_IOREMAP;
		man->drm_bus_maptype = _DRM_AGP;
		man->gpu_offset = 0;
		break;
	default:
		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
		return -EINVAL;
	}
	return 0;
}

/*
 * i915_evict_flags:
 *
 * @bo: the buffer object to be evicted
 *
 * Return the bo flags for a buffer which is not mapped to the hardware.
 * These will be placed in proposed_flags so that when the move is
 * finished, they'll end up in bo->mem.flags
 */
uint64_t i915_evict_flags(struct drm_buffer_object *bo)
{
	switch (bo->mem.mem_type) {
	case DRM_BO_MEM_LOCAL:
	case DRM_BO_MEM_TT:
		return DRM_BO_FLAG_MEM_LOCAL;
	default:
		return DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_CACHED;
	}
}

#if 0 /* See comment below */

static void i915_emit_copy_blit(struct drm_device * dev,
				uint32_t src_offset,
				uint32_t dst_offset,
				uint32_t pages, int direction)
{
	uint32_t cur_pages;
	uint32_t stride = PAGE_SIZE;
	drm_i915_private_t *dev_priv = dev->dev_private;
	RING_LOCALS;

	if (!dev_priv)
		return;

	i915_kernel_lost_context(dev);
	while (pages > 0) {
		cur_pages = pages;
		if (cur_pages > 2048)
			cur_pages = 2048;
		pages -= cur_pages;

		BEGIN_LP_RING(6);
		OUT_RING(SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
			 XY_SRC_COPY_BLT_WRITE_RGB);
		OUT_RING((stride & 0xffff) | (0xcc << 16) | (1 << 24) |
			 (1 << 25) | (direction ? (1 << 30) : 0));
		OUT_RING((cur_pages << 16) | PAGE_SIZE);
		OUT_RING(dst_offset);
		OUT_RING(stride & 0xffff);
		OUT_RING(src_offset);
		ADVANCE_LP_RING();
	}
	return;
}

static int i915_move_blit(struct drm_buffer_object * bo,
			  int evict, int no_wait, struct drm_bo_mem_reg * new_mem)
{
	struct drm_bo_mem_reg *old_mem = &bo->mem;
	int dir = 0;

	if ((old_mem->mem_type == new_mem->mem_type) &&
	    (new_mem->mm_node->start <
	     old_mem->mm_node->start + old_mem->mm_node->size)) {
		dir = 1;
	}

	i915_emit_copy_blit(bo->dev,
			    old_mem->mm_node->start << PAGE_SHIFT,
			    new_mem->mm_node->start << PAGE_SHIFT,
			    new_mem->num_pages, dir);

	i915_emit_mi_flush(bo->dev, MI_READ_FLUSH | MI_EXE_FLUSH);

	return drm_bo_move_accel_cleanup(bo, evict, no_wait, 0,
					 DRM_FENCE_TYPE_EXE |
					 DRM_I915_FENCE_TYPE_RW,
					 DRM_I915_FENCE_FLAG_FLUSHED, new_mem);
}

/*
 * Flip destination ttm into cached-coherent AGP,
 * then blit and subsequently move out again.
 */

static int i915_move_flip(struct drm_buffer_object * bo,
			  int evict, int no_wait, struct drm_bo_mem_reg * new_mem)
{
	struct drm_device *dev = bo->dev;
	struct drm_bo_mem_reg tmp_mem;
	int ret;

	tmp_mem = *new_mem;
	tmp_mem.mm_node = NULL;
	tmp_mem.mask = DRM_BO_FLAG_MEM_TT |
	    DRM_BO_FLAG_CACHED | DRM_BO_FLAG_FORCE_CACHING;

	ret = drm_bo_mem_space(bo, &tmp_mem, no_wait);
	if (ret)
		return ret;

	ret = drm_bind_ttm(bo->ttm, &tmp_mem);
	if (ret)
		goto out_cleanup;

	ret = i915_move_blit(bo, 1, no_wait, &tmp_mem);
	if (ret)
		goto out_cleanup;

	ret = drm_bo_move_ttm(bo, evict, no_wait, new_mem);
out_cleanup:
	if (tmp_mem.mm_node) {
		mutex_lock(&dev->struct_mutex);
		if (tmp_mem.mm_node != bo->pinned_node)
			drm_mm_put_block(tmp_mem.mm_node);
		tmp_mem.mm_node = NULL;
		mutex_unlock(&dev->struct_mutex);
	}
	return ret;
}

#endif

/*
 * Disable i915_move_flip for now, since we can't guarantee that the hardware
 * lock is held here. To re-enable we need to make sure either
 * a) The X server is using DRM to submit commands to the ring, or
 * b) DRM can use the HP ring for these blits. This means i915 needs to
 *    implement a new ring submission mechanism and fence class.
 */
int i915_move(struct drm_buffer_object *bo,
	      int evict, int no_wait, struct drm_bo_mem_reg *new_mem)
{
	struct drm_bo_mem_reg *old_mem = &bo->mem;

	if (old_mem->mem_type == DRM_BO_MEM_LOCAL) {
		return drm_bo_move_memcpy(bo, evict, no_wait, new_mem);
	} else if (new_mem->mem_type == DRM_BO_MEM_LOCAL) {
		if (0) /*i915_move_flip(bo, evict, no_wait, new_mem)*/
			return drm_bo_move_memcpy(bo, evict, no_wait, new_mem);
	} else {
		if (0) /*i915_move_blit(bo, evict, no_wait, new_mem)*/
			return drm_bo_move_memcpy(bo, evict, no_wait, new_mem);
	}
	return 0;
}

#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24))
static inline void clflush(volatile void *__p)
{
	asm volatile("clflush %0" : "+m" (*(char __force *)__p));
}
#endif

static inline void drm_cache_flush_addr(void *virt)
{
	int i;

	for (i = 0; i < PAGE_SIZE; i += boot_cpu_data.x86_clflush_size)
		clflush(virt+i);
}

static inline void drm_cache_flush_page(struct page *p)
{
	drm_cache_flush_addr(page_address(p));
}

void i915_flush_ttm(struct drm_ttm *ttm)
{
	int i;

	if (!ttm)
		return;

	DRM_MEMORYBARRIER();

#ifdef CONFIG_X86_32
	/* Hopefully nobody has built an x86-64 processor without clflush */
	if (!cpu_has_clflush) {
		wbinvd();
		DRM_MEMORYBARRIER();
		return;
	}
#endif

	for (i = ttm->num_pages - 1; i >= 0; i--)
		drm_cache_flush_page(drm_ttm_get_page(ttm, i));

	DRM_MEMORYBARRIER();
}