xref: /openbmc/linux/drivers/gpu/drm/radeon/rv770.c (revision d0b73b48)
1 /*
2  * Copyright 2008 Advanced Micro Devices, Inc.
3  * Copyright 2008 Red Hat Inc.
4  * Copyright 2009 Jerome Glisse.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22  * OTHER DEALINGS IN THE SOFTWARE.
23  *
24  * Authors: Dave Airlie
25  *          Alex Deucher
26  *          Jerome Glisse
27  */
28 #include <linux/firmware.h>
29 #include <linux/platform_device.h>
30 #include <linux/slab.h>
31 #include <drm/drmP.h>
32 #include "radeon.h"
33 #include "radeon_asic.h"
34 #include <drm/radeon_drm.h>
35 #include "rv770d.h"
36 #include "atom.h"
37 #include "avivod.h"
38 
39 #define R700_PFP_UCODE_SIZE 848
40 #define R700_PM4_UCODE_SIZE 1360
41 
42 static void rv770_gpu_init(struct radeon_device *rdev);
43 void rv770_fini(struct radeon_device *rdev);
44 static void rv770_pcie_gen2_enable(struct radeon_device *rdev);
45 
46 u32 rv770_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
47 {
48 	struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
49 	u32 tmp = RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset);
50 	int i;
51 
52 	/* Lock the graphics update lock */
53 	tmp |= AVIVO_D1GRPH_UPDATE_LOCK;
54 	WREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset, tmp);
55 
56 	/* update the scanout addresses */
57 	if (radeon_crtc->crtc_id) {
58 		WREG32(D2GRPH_SECONDARY_SURFACE_ADDRESS_HIGH, upper_32_bits(crtc_base));
59 		WREG32(D2GRPH_PRIMARY_SURFACE_ADDRESS_HIGH, upper_32_bits(crtc_base));
60 	} else {
61 		WREG32(D1GRPH_SECONDARY_SURFACE_ADDRESS_HIGH, upper_32_bits(crtc_base));
62 		WREG32(D1GRPH_PRIMARY_SURFACE_ADDRESS_HIGH, upper_32_bits(crtc_base));
63 	}
64 	WREG32(D1GRPH_SECONDARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
65 	       (u32)crtc_base);
66 	WREG32(D1GRPH_PRIMARY_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
67 	       (u32)crtc_base);
68 
69 	/* Wait for update_pending to go high. */
70 	for (i = 0; i < rdev->usec_timeout; i++) {
71 		if (RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset) & AVIVO_D1GRPH_SURFACE_UPDATE_PENDING)
72 			break;
73 		udelay(1);
74 	}
75 	DRM_DEBUG("Update pending now high. Unlocking vupdate_lock.\n");
76 
77 	/* Unlock the lock, so double-buffering can take place inside vblank */
78 	tmp &= ~AVIVO_D1GRPH_UPDATE_LOCK;
79 	WREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset, tmp);
80 
81 	/* Return current update_pending status: */
82 	return RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset) & AVIVO_D1GRPH_SURFACE_UPDATE_PENDING;
83 }
84 
85 /* get temperature in millidegrees */
86 int rv770_get_temp(struct radeon_device *rdev)
87 {
88 	u32 temp = (RREG32(CG_MULT_THERMAL_STATUS) & ASIC_T_MASK) >>
89 		ASIC_T_SHIFT;
90 	int actual_temp;
91 
92 	if (temp & 0x400)
93 		actual_temp = -256;
94 	else if (temp & 0x200)
95 		actual_temp = 255;
96 	else if (temp & 0x100) {
97 		actual_temp = temp & 0x1ff;
98 		actual_temp |= ~0x1ff;
99 	} else
100 		actual_temp = temp & 0xff;
101 
102 	return (actual_temp * 1000) / 2;
103 }
104 
105 void rv770_pm_misc(struct radeon_device *rdev)
106 {
107 	int req_ps_idx = rdev->pm.requested_power_state_index;
108 	int req_cm_idx = rdev->pm.requested_clock_mode_index;
109 	struct radeon_power_state *ps = &rdev->pm.power_state[req_ps_idx];
110 	struct radeon_voltage *voltage = &ps->clock_info[req_cm_idx].voltage;
111 
112 	if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
113 		/* 0xff01 is a flag rather then an actual voltage */
114 		if (voltage->voltage == 0xff01)
115 			return;
116 		if (voltage->voltage != rdev->pm.current_vddc) {
117 			radeon_atom_set_voltage(rdev, voltage->voltage, SET_VOLTAGE_TYPE_ASIC_VDDC);
118 			rdev->pm.current_vddc = voltage->voltage;
119 			DRM_DEBUG("Setting: v: %d\n", voltage->voltage);
120 		}
121 	}
122 }
123 
124 /*
125  * GART
126  */
127 static int rv770_pcie_gart_enable(struct radeon_device *rdev)
128 {
129 	u32 tmp;
130 	int r, i;
131 
132 	if (rdev->gart.robj == NULL) {
133 		dev_err(rdev->dev, "No VRAM object for PCIE GART.\n");
134 		return -EINVAL;
135 	}
136 	r = radeon_gart_table_vram_pin(rdev);
137 	if (r)
138 		return r;
139 	radeon_gart_restore(rdev);
140 	/* Setup L2 cache */
141 	WREG32(VM_L2_CNTL, ENABLE_L2_CACHE | ENABLE_L2_FRAGMENT_PROCESSING |
142 				ENABLE_L2_PTE_CACHE_LRU_UPDATE_BY_WRITE |
143 				EFFECTIVE_L2_QUEUE_SIZE(7));
144 	WREG32(VM_L2_CNTL2, 0);
145 	WREG32(VM_L2_CNTL3, BANK_SELECT(0) | CACHE_UPDATE_MODE(2));
146 	/* Setup TLB control */
147 	tmp = ENABLE_L1_TLB | ENABLE_L1_FRAGMENT_PROCESSING |
148 		SYSTEM_ACCESS_MODE_NOT_IN_SYS |
149 		SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU |
150 		EFFECTIVE_L1_TLB_SIZE(5) | EFFECTIVE_L1_QUEUE_SIZE(5);
151 	WREG32(MC_VM_MD_L1_TLB0_CNTL, tmp);
152 	WREG32(MC_VM_MD_L1_TLB1_CNTL, tmp);
153 	WREG32(MC_VM_MD_L1_TLB2_CNTL, tmp);
154 	if (rdev->family == CHIP_RV740)
155 		WREG32(MC_VM_MD_L1_TLB3_CNTL, tmp);
156 	WREG32(MC_VM_MB_L1_TLB0_CNTL, tmp);
157 	WREG32(MC_VM_MB_L1_TLB1_CNTL, tmp);
158 	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
159 	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
160 	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, rdev->mc.gtt_start >> 12);
161 	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, rdev->mc.gtt_end >> 12);
162 	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, rdev->gart.table_addr >> 12);
163 	WREG32(VM_CONTEXT0_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
164 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
165 	WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
166 			(u32)(rdev->dummy_page.addr >> 12));
167 	for (i = 1; i < 7; i++)
168 		WREG32(VM_CONTEXT0_CNTL + (i * 4), 0);
169 
170 	r600_pcie_gart_tlb_flush(rdev);
171 	DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
172 		 (unsigned)(rdev->mc.gtt_size >> 20),
173 		 (unsigned long long)rdev->gart.table_addr);
174 	rdev->gart.ready = true;
175 	return 0;
176 }
177 
178 static void rv770_pcie_gart_disable(struct radeon_device *rdev)
179 {
180 	u32 tmp;
181 	int i;
182 
183 	/* Disable all tables */
184 	for (i = 0; i < 7; i++)
185 		WREG32(VM_CONTEXT0_CNTL + (i * 4), 0);
186 
187 	/* Setup L2 cache */
188 	WREG32(VM_L2_CNTL, ENABLE_L2_FRAGMENT_PROCESSING |
189 				EFFECTIVE_L2_QUEUE_SIZE(7));
190 	WREG32(VM_L2_CNTL2, 0);
191 	WREG32(VM_L2_CNTL3, BANK_SELECT(0) | CACHE_UPDATE_MODE(2));
192 	/* Setup TLB control */
193 	tmp = EFFECTIVE_L1_TLB_SIZE(5) | EFFECTIVE_L1_QUEUE_SIZE(5);
194 	WREG32(MC_VM_MD_L1_TLB0_CNTL, tmp);
195 	WREG32(MC_VM_MD_L1_TLB1_CNTL, tmp);
196 	WREG32(MC_VM_MD_L1_TLB2_CNTL, tmp);
197 	WREG32(MC_VM_MB_L1_TLB0_CNTL, tmp);
198 	WREG32(MC_VM_MB_L1_TLB1_CNTL, tmp);
199 	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
200 	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
201 	radeon_gart_table_vram_unpin(rdev);
202 }
203 
204 static void rv770_pcie_gart_fini(struct radeon_device *rdev)
205 {
206 	radeon_gart_fini(rdev);
207 	rv770_pcie_gart_disable(rdev);
208 	radeon_gart_table_vram_free(rdev);
209 }
210 
211 
212 static void rv770_agp_enable(struct radeon_device *rdev)
213 {
214 	u32 tmp;
215 	int i;
216 
217 	/* Setup L2 cache */
218 	WREG32(VM_L2_CNTL, ENABLE_L2_CACHE | ENABLE_L2_FRAGMENT_PROCESSING |
219 				ENABLE_L2_PTE_CACHE_LRU_UPDATE_BY_WRITE |
220 				EFFECTIVE_L2_QUEUE_SIZE(7));
221 	WREG32(VM_L2_CNTL2, 0);
222 	WREG32(VM_L2_CNTL3, BANK_SELECT(0) | CACHE_UPDATE_MODE(2));
223 	/* Setup TLB control */
224 	tmp = ENABLE_L1_TLB | ENABLE_L1_FRAGMENT_PROCESSING |
225 		SYSTEM_ACCESS_MODE_NOT_IN_SYS |
226 		SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU |
227 		EFFECTIVE_L1_TLB_SIZE(5) | EFFECTIVE_L1_QUEUE_SIZE(5);
228 	WREG32(MC_VM_MD_L1_TLB0_CNTL, tmp);
229 	WREG32(MC_VM_MD_L1_TLB1_CNTL, tmp);
230 	WREG32(MC_VM_MD_L1_TLB2_CNTL, tmp);
231 	WREG32(MC_VM_MB_L1_TLB0_CNTL, tmp);
232 	WREG32(MC_VM_MB_L1_TLB1_CNTL, tmp);
233 	WREG32(MC_VM_MB_L1_TLB2_CNTL, tmp);
234 	WREG32(MC_VM_MB_L1_TLB3_CNTL, tmp);
235 	for (i = 0; i < 7; i++)
236 		WREG32(VM_CONTEXT0_CNTL + (i * 4), 0);
237 }
238 
239 static void rv770_mc_program(struct radeon_device *rdev)
240 {
241 	struct rv515_mc_save save;
242 	u32 tmp;
243 	int i, j;
244 
245 	/* Initialize HDP */
246 	for (i = 0, j = 0; i < 32; i++, j += 0x18) {
247 		WREG32((0x2c14 + j), 0x00000000);
248 		WREG32((0x2c18 + j), 0x00000000);
249 		WREG32((0x2c1c + j), 0x00000000);
250 		WREG32((0x2c20 + j), 0x00000000);
251 		WREG32((0x2c24 + j), 0x00000000);
252 	}
253 	/* r7xx hw bug.  Read from HDP_DEBUG1 rather
254 	 * than writing to HDP_REG_COHERENCY_FLUSH_CNTL
255 	 */
256 	tmp = RREG32(HDP_DEBUG1);
257 
258 	rv515_mc_stop(rdev, &save);
259 	if (r600_mc_wait_for_idle(rdev)) {
260 		dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
261 	}
262 	/* Lockout access through VGA aperture*/
263 	WREG32(VGA_HDP_CONTROL, VGA_MEMORY_DISABLE);
264 	/* Update configuration */
265 	if (rdev->flags & RADEON_IS_AGP) {
266 		if (rdev->mc.vram_start < rdev->mc.gtt_start) {
267 			/* VRAM before AGP */
268 			WREG32(MC_VM_SYSTEM_APERTURE_LOW_ADDR,
269 				rdev->mc.vram_start >> 12);
270 			WREG32(MC_VM_SYSTEM_APERTURE_HIGH_ADDR,
271 				rdev->mc.gtt_end >> 12);
272 		} else {
273 			/* VRAM after AGP */
274 			WREG32(MC_VM_SYSTEM_APERTURE_LOW_ADDR,
275 				rdev->mc.gtt_start >> 12);
276 			WREG32(MC_VM_SYSTEM_APERTURE_HIGH_ADDR,
277 				rdev->mc.vram_end >> 12);
278 		}
279 	} else {
280 		WREG32(MC_VM_SYSTEM_APERTURE_LOW_ADDR,
281 			rdev->mc.vram_start >> 12);
282 		WREG32(MC_VM_SYSTEM_APERTURE_HIGH_ADDR,
283 			rdev->mc.vram_end >> 12);
284 	}
285 	WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR, rdev->vram_scratch.gpu_addr >> 12);
286 	tmp = ((rdev->mc.vram_end >> 24) & 0xFFFF) << 16;
287 	tmp |= ((rdev->mc.vram_start >> 24) & 0xFFFF);
288 	WREG32(MC_VM_FB_LOCATION, tmp);
289 	WREG32(HDP_NONSURFACE_BASE, (rdev->mc.vram_start >> 8));
290 	WREG32(HDP_NONSURFACE_INFO, (2 << 7));
291 	WREG32(HDP_NONSURFACE_SIZE, 0x3FFFFFFF);
292 	if (rdev->flags & RADEON_IS_AGP) {
293 		WREG32(MC_VM_AGP_TOP, rdev->mc.gtt_end >> 16);
294 		WREG32(MC_VM_AGP_BOT, rdev->mc.gtt_start >> 16);
295 		WREG32(MC_VM_AGP_BASE, rdev->mc.agp_base >> 22);
296 	} else {
297 		WREG32(MC_VM_AGP_BASE, 0);
298 		WREG32(MC_VM_AGP_TOP, 0x0FFFFFFF);
299 		WREG32(MC_VM_AGP_BOT, 0x0FFFFFFF);
300 	}
301 	if (r600_mc_wait_for_idle(rdev)) {
302 		dev_warn(rdev->dev, "Wait for MC idle timedout !\n");
303 	}
304 	rv515_mc_resume(rdev, &save);
305 	/* we need to own VRAM, so turn off the VGA renderer here
306 	 * to stop it overwriting our objects */
307 	rv515_vga_render_disable(rdev);
308 }
309 
310 
311 /*
312  * CP.
313  */
314 void r700_cp_stop(struct radeon_device *rdev)
315 {
316 	radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
317 	WREG32(CP_ME_CNTL, (CP_ME_HALT | CP_PFP_HALT));
318 	WREG32(SCRATCH_UMSK, 0);
319 	rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false;
320 }
321 
322 static int rv770_cp_load_microcode(struct radeon_device *rdev)
323 {
324 	const __be32 *fw_data;
325 	int i;
326 
327 	if (!rdev->me_fw || !rdev->pfp_fw)
328 		return -EINVAL;
329 
330 	r700_cp_stop(rdev);
331 	WREG32(CP_RB_CNTL,
332 #ifdef __BIG_ENDIAN
333 	       BUF_SWAP_32BIT |
334 #endif
335 	       RB_NO_UPDATE | RB_BLKSZ(15) | RB_BUFSZ(3));
336 
337 	/* Reset cp */
338 	WREG32(GRBM_SOFT_RESET, SOFT_RESET_CP);
339 	RREG32(GRBM_SOFT_RESET);
340 	mdelay(15);
341 	WREG32(GRBM_SOFT_RESET, 0);
342 
343 	fw_data = (const __be32 *)rdev->pfp_fw->data;
344 	WREG32(CP_PFP_UCODE_ADDR, 0);
345 	for (i = 0; i < R700_PFP_UCODE_SIZE; i++)
346 		WREG32(CP_PFP_UCODE_DATA, be32_to_cpup(fw_data++));
347 	WREG32(CP_PFP_UCODE_ADDR, 0);
348 
349 	fw_data = (const __be32 *)rdev->me_fw->data;
350 	WREG32(CP_ME_RAM_WADDR, 0);
351 	for (i = 0; i < R700_PM4_UCODE_SIZE; i++)
352 		WREG32(CP_ME_RAM_DATA, be32_to_cpup(fw_data++));
353 
354 	WREG32(CP_PFP_UCODE_ADDR, 0);
355 	WREG32(CP_ME_RAM_WADDR, 0);
356 	WREG32(CP_ME_RAM_RADDR, 0);
357 	return 0;
358 }
359 
360 void r700_cp_fini(struct radeon_device *rdev)
361 {
362 	struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
363 	r700_cp_stop(rdev);
364 	radeon_ring_fini(rdev, ring);
365 	radeon_scratch_free(rdev, ring->rptr_save_reg);
366 }
367 
368 /*
369  * Core functions
370  */
371 static void rv770_gpu_init(struct radeon_device *rdev)
372 {
373 	int i, j, num_qd_pipes;
374 	u32 ta_aux_cntl;
375 	u32 sx_debug_1;
376 	u32 smx_dc_ctl0;
377 	u32 db_debug3;
378 	u32 num_gs_verts_per_thread;
379 	u32 vgt_gs_per_es;
380 	u32 gs_prim_buffer_depth = 0;
381 	u32 sq_ms_fifo_sizes;
382 	u32 sq_config;
383 	u32 sq_thread_resource_mgmt;
384 	u32 hdp_host_path_cntl;
385 	u32 sq_dyn_gpr_size_simd_ab_0;
386 	u32 gb_tiling_config = 0;
387 	u32 cc_rb_backend_disable = 0;
388 	u32 cc_gc_shader_pipe_config = 0;
389 	u32 mc_arb_ramcfg;
390 	u32 db_debug4, tmp;
391 	u32 inactive_pipes, shader_pipe_config;
392 	u32 disabled_rb_mask;
393 	unsigned active_number;
394 
395 	/* setup chip specs */
396 	rdev->config.rv770.tiling_group_size = 256;
397 	switch (rdev->family) {
398 	case CHIP_RV770:
399 		rdev->config.rv770.max_pipes = 4;
400 		rdev->config.rv770.max_tile_pipes = 8;
401 		rdev->config.rv770.max_simds = 10;
402 		rdev->config.rv770.max_backends = 4;
403 		rdev->config.rv770.max_gprs = 256;
404 		rdev->config.rv770.max_threads = 248;
405 		rdev->config.rv770.max_stack_entries = 512;
406 		rdev->config.rv770.max_hw_contexts = 8;
407 		rdev->config.rv770.max_gs_threads = 16 * 2;
408 		rdev->config.rv770.sx_max_export_size = 128;
409 		rdev->config.rv770.sx_max_export_pos_size = 16;
410 		rdev->config.rv770.sx_max_export_smx_size = 112;
411 		rdev->config.rv770.sq_num_cf_insts = 2;
412 
413 		rdev->config.rv770.sx_num_of_sets = 7;
414 		rdev->config.rv770.sc_prim_fifo_size = 0xF9;
415 		rdev->config.rv770.sc_hiz_tile_fifo_size = 0x30;
416 		rdev->config.rv770.sc_earlyz_tile_fifo_fize = 0x130;
417 		break;
418 	case CHIP_RV730:
419 		rdev->config.rv770.max_pipes = 2;
420 		rdev->config.rv770.max_tile_pipes = 4;
421 		rdev->config.rv770.max_simds = 8;
422 		rdev->config.rv770.max_backends = 2;
423 		rdev->config.rv770.max_gprs = 128;
424 		rdev->config.rv770.max_threads = 248;
425 		rdev->config.rv770.max_stack_entries = 256;
426 		rdev->config.rv770.max_hw_contexts = 8;
427 		rdev->config.rv770.max_gs_threads = 16 * 2;
428 		rdev->config.rv770.sx_max_export_size = 256;
429 		rdev->config.rv770.sx_max_export_pos_size = 32;
430 		rdev->config.rv770.sx_max_export_smx_size = 224;
431 		rdev->config.rv770.sq_num_cf_insts = 2;
432 
433 		rdev->config.rv770.sx_num_of_sets = 7;
434 		rdev->config.rv770.sc_prim_fifo_size = 0xf9;
435 		rdev->config.rv770.sc_hiz_tile_fifo_size = 0x30;
436 		rdev->config.rv770.sc_earlyz_tile_fifo_fize = 0x130;
437 		if (rdev->config.rv770.sx_max_export_pos_size > 16) {
438 			rdev->config.rv770.sx_max_export_pos_size -= 16;
439 			rdev->config.rv770.sx_max_export_smx_size += 16;
440 		}
441 		break;
442 	case CHIP_RV710:
443 		rdev->config.rv770.max_pipes = 2;
444 		rdev->config.rv770.max_tile_pipes = 2;
445 		rdev->config.rv770.max_simds = 2;
446 		rdev->config.rv770.max_backends = 1;
447 		rdev->config.rv770.max_gprs = 256;
448 		rdev->config.rv770.max_threads = 192;
449 		rdev->config.rv770.max_stack_entries = 256;
450 		rdev->config.rv770.max_hw_contexts = 4;
451 		rdev->config.rv770.max_gs_threads = 8 * 2;
452 		rdev->config.rv770.sx_max_export_size = 128;
453 		rdev->config.rv770.sx_max_export_pos_size = 16;
454 		rdev->config.rv770.sx_max_export_smx_size = 112;
455 		rdev->config.rv770.sq_num_cf_insts = 1;
456 
457 		rdev->config.rv770.sx_num_of_sets = 7;
458 		rdev->config.rv770.sc_prim_fifo_size = 0x40;
459 		rdev->config.rv770.sc_hiz_tile_fifo_size = 0x30;
460 		rdev->config.rv770.sc_earlyz_tile_fifo_fize = 0x130;
461 		break;
462 	case CHIP_RV740:
463 		rdev->config.rv770.max_pipes = 4;
464 		rdev->config.rv770.max_tile_pipes = 4;
465 		rdev->config.rv770.max_simds = 8;
466 		rdev->config.rv770.max_backends = 4;
467 		rdev->config.rv770.max_gprs = 256;
468 		rdev->config.rv770.max_threads = 248;
469 		rdev->config.rv770.max_stack_entries = 512;
470 		rdev->config.rv770.max_hw_contexts = 8;
471 		rdev->config.rv770.max_gs_threads = 16 * 2;
472 		rdev->config.rv770.sx_max_export_size = 256;
473 		rdev->config.rv770.sx_max_export_pos_size = 32;
474 		rdev->config.rv770.sx_max_export_smx_size = 224;
475 		rdev->config.rv770.sq_num_cf_insts = 2;
476 
477 		rdev->config.rv770.sx_num_of_sets = 7;
478 		rdev->config.rv770.sc_prim_fifo_size = 0x100;
479 		rdev->config.rv770.sc_hiz_tile_fifo_size = 0x30;
480 		rdev->config.rv770.sc_earlyz_tile_fifo_fize = 0x130;
481 
482 		if (rdev->config.rv770.sx_max_export_pos_size > 16) {
483 			rdev->config.rv770.sx_max_export_pos_size -= 16;
484 			rdev->config.rv770.sx_max_export_smx_size += 16;
485 		}
486 		break;
487 	default:
488 		break;
489 	}
490 
491 	/* Initialize HDP */
492 	j = 0;
493 	for (i = 0; i < 32; i++) {
494 		WREG32((0x2c14 + j), 0x00000000);
495 		WREG32((0x2c18 + j), 0x00000000);
496 		WREG32((0x2c1c + j), 0x00000000);
497 		WREG32((0x2c20 + j), 0x00000000);
498 		WREG32((0x2c24 + j), 0x00000000);
499 		j += 0x18;
500 	}
501 
502 	WREG32(GRBM_CNTL, GRBM_READ_TIMEOUT(0xff));
503 
504 	/* setup tiling, simd, pipe config */
505 	mc_arb_ramcfg = RREG32(MC_ARB_RAMCFG);
506 
507 	shader_pipe_config = RREG32(CC_GC_SHADER_PIPE_CONFIG);
508 	inactive_pipes = (shader_pipe_config & INACTIVE_QD_PIPES_MASK) >> INACTIVE_QD_PIPES_SHIFT;
509 	for (i = 0, tmp = 1, active_number = 0; i < R7XX_MAX_PIPES; i++) {
510 		if (!(inactive_pipes & tmp)) {
511 			active_number++;
512 		}
513 		tmp <<= 1;
514 	}
515 	if (active_number == 1) {
516 		WREG32(SPI_CONFIG_CNTL, DISABLE_INTERP_1);
517 	} else {
518 		WREG32(SPI_CONFIG_CNTL, 0);
519 	}
520 
521 	cc_rb_backend_disable = RREG32(CC_RB_BACKEND_DISABLE) & 0x00ff0000;
522 	tmp = R7XX_MAX_BACKENDS - r600_count_pipe_bits(cc_rb_backend_disable >> 16);
523 	if (tmp < rdev->config.rv770.max_backends) {
524 		rdev->config.rv770.max_backends = tmp;
525 	}
526 
527 	cc_gc_shader_pipe_config = RREG32(CC_GC_SHADER_PIPE_CONFIG) & 0xffffff00;
528 	tmp = R7XX_MAX_PIPES - r600_count_pipe_bits((cc_gc_shader_pipe_config >> 8) & R7XX_MAX_PIPES_MASK);
529 	if (tmp < rdev->config.rv770.max_pipes) {
530 		rdev->config.rv770.max_pipes = tmp;
531 	}
532 	tmp = R7XX_MAX_SIMDS - r600_count_pipe_bits((cc_gc_shader_pipe_config >> 16) & R7XX_MAX_SIMDS_MASK);
533 	if (tmp < rdev->config.rv770.max_simds) {
534 		rdev->config.rv770.max_simds = tmp;
535 	}
536 
537 	switch (rdev->config.rv770.max_tile_pipes) {
538 	case 1:
539 	default:
540 		gb_tiling_config = PIPE_TILING(0);
541 		break;
542 	case 2:
543 		gb_tiling_config = PIPE_TILING(1);
544 		break;
545 	case 4:
546 		gb_tiling_config = PIPE_TILING(2);
547 		break;
548 	case 8:
549 		gb_tiling_config = PIPE_TILING(3);
550 		break;
551 	}
552 	rdev->config.rv770.tiling_npipes = rdev->config.rv770.max_tile_pipes;
553 
554 	disabled_rb_mask = (RREG32(CC_RB_BACKEND_DISABLE) >> 16) & R7XX_MAX_BACKENDS_MASK;
555 	tmp = (gb_tiling_config & PIPE_TILING__MASK) >> PIPE_TILING__SHIFT;
556 	tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.rv770.max_backends,
557 					R7XX_MAX_BACKENDS, disabled_rb_mask);
558 	gb_tiling_config |= tmp << 16;
559 	rdev->config.rv770.backend_map = tmp;
560 
561 	if (rdev->family == CHIP_RV770)
562 		gb_tiling_config |= BANK_TILING(1);
563 	else {
564 		if ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT)
565 			gb_tiling_config |= BANK_TILING(1);
566 		else
567 			gb_tiling_config |= BANK_TILING(0);
568 	}
569 	rdev->config.rv770.tiling_nbanks = 4 << ((gb_tiling_config >> 4) & 0x3);
570 	gb_tiling_config |= GROUP_SIZE((mc_arb_ramcfg & BURSTLENGTH_MASK) >> BURSTLENGTH_SHIFT);
571 	if (((mc_arb_ramcfg & NOOFROWS_MASK) >> NOOFROWS_SHIFT) > 3) {
572 		gb_tiling_config |= ROW_TILING(3);
573 		gb_tiling_config |= SAMPLE_SPLIT(3);
574 	} else {
575 		gb_tiling_config |=
576 			ROW_TILING(((mc_arb_ramcfg & NOOFROWS_MASK) >> NOOFROWS_SHIFT));
577 		gb_tiling_config |=
578 			SAMPLE_SPLIT(((mc_arb_ramcfg & NOOFROWS_MASK) >> NOOFROWS_SHIFT));
579 	}
580 
581 	gb_tiling_config |= BANK_SWAPS(1);
582 	rdev->config.rv770.tile_config = gb_tiling_config;
583 
584 	WREG32(GB_TILING_CONFIG, gb_tiling_config);
585 	WREG32(DCP_TILING_CONFIG, (gb_tiling_config & 0xffff));
586 	WREG32(HDP_TILING_CONFIG, (gb_tiling_config & 0xffff));
587 	WREG32(DMA_TILING_CONFIG, (gb_tiling_config & 0xffff));
588 	WREG32(DMA_TILING_CONFIG2, (gb_tiling_config & 0xffff));
589 
590 	WREG32(CGTS_SYS_TCC_DISABLE, 0);
591 	WREG32(CGTS_TCC_DISABLE, 0);
592 	WREG32(CGTS_USER_SYS_TCC_DISABLE, 0);
593 	WREG32(CGTS_USER_TCC_DISABLE, 0);
594 
595 
596 	num_qd_pipes = R7XX_MAX_PIPES - r600_count_pipe_bits((cc_gc_shader_pipe_config & INACTIVE_QD_PIPES_MASK) >> 8);
597 	WREG32(VGT_OUT_DEALLOC_CNTL, (num_qd_pipes * 4) & DEALLOC_DIST_MASK);
598 	WREG32(VGT_VERTEX_REUSE_BLOCK_CNTL, ((num_qd_pipes * 4) - 2) & VTX_REUSE_DEPTH_MASK);
599 
600 	/* set HW defaults for 3D engine */
601 	WREG32(CP_QUEUE_THRESHOLDS, (ROQ_IB1_START(0x16) |
602 				     ROQ_IB2_START(0x2b)));
603 
604 	WREG32(CP_MEQ_THRESHOLDS, STQ_SPLIT(0x30));
605 
606 	ta_aux_cntl = RREG32(TA_CNTL_AUX);
607 	WREG32(TA_CNTL_AUX, ta_aux_cntl | DISABLE_CUBE_ANISO);
608 
609 	sx_debug_1 = RREG32(SX_DEBUG_1);
610 	sx_debug_1 |= ENABLE_NEW_SMX_ADDRESS;
611 	WREG32(SX_DEBUG_1, sx_debug_1);
612 
613 	smx_dc_ctl0 = RREG32(SMX_DC_CTL0);
614 	smx_dc_ctl0 &= ~CACHE_DEPTH(0x1ff);
615 	smx_dc_ctl0 |= CACHE_DEPTH((rdev->config.rv770.sx_num_of_sets * 64) - 1);
616 	WREG32(SMX_DC_CTL0, smx_dc_ctl0);
617 
618 	if (rdev->family != CHIP_RV740)
619 		WREG32(SMX_EVENT_CTL, (ES_FLUSH_CTL(4) |
620 				       GS_FLUSH_CTL(4) |
621 				       ACK_FLUSH_CTL(3) |
622 				       SYNC_FLUSH_CTL));
623 
624 	if (rdev->family != CHIP_RV770)
625 		WREG32(SMX_SAR_CTL0, 0x00003f3f);
626 
627 	db_debug3 = RREG32(DB_DEBUG3);
628 	db_debug3 &= ~DB_CLK_OFF_DELAY(0x1f);
629 	switch (rdev->family) {
630 	case CHIP_RV770:
631 	case CHIP_RV740:
632 		db_debug3 |= DB_CLK_OFF_DELAY(0x1f);
633 		break;
634 	case CHIP_RV710:
635 	case CHIP_RV730:
636 	default:
637 		db_debug3 |= DB_CLK_OFF_DELAY(2);
638 		break;
639 	}
640 	WREG32(DB_DEBUG3, db_debug3);
641 
642 	if (rdev->family != CHIP_RV770) {
643 		db_debug4 = RREG32(DB_DEBUG4);
644 		db_debug4 |= DISABLE_TILE_COVERED_FOR_PS_ITER;
645 		WREG32(DB_DEBUG4, db_debug4);
646 	}
647 
648 	WREG32(SX_EXPORT_BUFFER_SIZES, (COLOR_BUFFER_SIZE((rdev->config.rv770.sx_max_export_size / 4) - 1) |
649 					POSITION_BUFFER_SIZE((rdev->config.rv770.sx_max_export_pos_size / 4) - 1) |
650 					SMX_BUFFER_SIZE((rdev->config.rv770.sx_max_export_smx_size / 4) - 1)));
651 
652 	WREG32(PA_SC_FIFO_SIZE, (SC_PRIM_FIFO_SIZE(rdev->config.rv770.sc_prim_fifo_size) |
653 				 SC_HIZ_TILE_FIFO_SIZE(rdev->config.rv770.sc_hiz_tile_fifo_size) |
654 				 SC_EARLYZ_TILE_FIFO_SIZE(rdev->config.rv770.sc_earlyz_tile_fifo_fize)));
655 
656 	WREG32(PA_SC_MULTI_CHIP_CNTL, 0);
657 
658 	WREG32(VGT_NUM_INSTANCES, 1);
659 
660 	WREG32(SPI_CONFIG_CNTL_1, VTX_DONE_DELAY(4));
661 
662 	WREG32(CP_PERFMON_CNTL, 0);
663 
664 	sq_ms_fifo_sizes = (CACHE_FIFO_SIZE(16 * rdev->config.rv770.sq_num_cf_insts) |
665 			    DONE_FIFO_HIWATER(0xe0) |
666 			    ALU_UPDATE_FIFO_HIWATER(0x8));
667 	switch (rdev->family) {
668 	case CHIP_RV770:
669 	case CHIP_RV730:
670 	case CHIP_RV710:
671 		sq_ms_fifo_sizes |= FETCH_FIFO_HIWATER(0x1);
672 		break;
673 	case CHIP_RV740:
674 	default:
675 		sq_ms_fifo_sizes |= FETCH_FIFO_HIWATER(0x4);
676 		break;
677 	}
678 	WREG32(SQ_MS_FIFO_SIZES, sq_ms_fifo_sizes);
679 
680 	/* SQ_CONFIG, SQ_GPR_RESOURCE_MGMT, SQ_THREAD_RESOURCE_MGMT, SQ_STACK_RESOURCE_MGMT
681 	 * should be adjusted as needed by the 2D/3D drivers.  This just sets default values
682 	 */
683 	sq_config = RREG32(SQ_CONFIG);
684 	sq_config &= ~(PS_PRIO(3) |
685 		       VS_PRIO(3) |
686 		       GS_PRIO(3) |
687 		       ES_PRIO(3));
688 	sq_config |= (DX9_CONSTS |
689 		      VC_ENABLE |
690 		      EXPORT_SRC_C |
691 		      PS_PRIO(0) |
692 		      VS_PRIO(1) |
693 		      GS_PRIO(2) |
694 		      ES_PRIO(3));
695 	if (rdev->family == CHIP_RV710)
696 		/* no vertex cache */
697 		sq_config &= ~VC_ENABLE;
698 
699 	WREG32(SQ_CONFIG, sq_config);
700 
701 	WREG32(SQ_GPR_RESOURCE_MGMT_1,  (NUM_PS_GPRS((rdev->config.rv770.max_gprs * 24)/64) |
702 					 NUM_VS_GPRS((rdev->config.rv770.max_gprs * 24)/64) |
703 					 NUM_CLAUSE_TEMP_GPRS(((rdev->config.rv770.max_gprs * 24)/64)/2)));
704 
705 	WREG32(SQ_GPR_RESOURCE_MGMT_2,  (NUM_GS_GPRS((rdev->config.rv770.max_gprs * 7)/64) |
706 					 NUM_ES_GPRS((rdev->config.rv770.max_gprs * 7)/64)));
707 
708 	sq_thread_resource_mgmt = (NUM_PS_THREADS((rdev->config.rv770.max_threads * 4)/8) |
709 				   NUM_VS_THREADS((rdev->config.rv770.max_threads * 2)/8) |
710 				   NUM_ES_THREADS((rdev->config.rv770.max_threads * 1)/8));
711 	if (((rdev->config.rv770.max_threads * 1) / 8) > rdev->config.rv770.max_gs_threads)
712 		sq_thread_resource_mgmt |= NUM_GS_THREADS(rdev->config.rv770.max_gs_threads);
713 	else
714 		sq_thread_resource_mgmt |= NUM_GS_THREADS((rdev->config.rv770.max_gs_threads * 1)/8);
715 	WREG32(SQ_THREAD_RESOURCE_MGMT, sq_thread_resource_mgmt);
716 
717 	WREG32(SQ_STACK_RESOURCE_MGMT_1, (NUM_PS_STACK_ENTRIES((rdev->config.rv770.max_stack_entries * 1)/4) |
718 						     NUM_VS_STACK_ENTRIES((rdev->config.rv770.max_stack_entries * 1)/4)));
719 
720 	WREG32(SQ_STACK_RESOURCE_MGMT_2, (NUM_GS_STACK_ENTRIES((rdev->config.rv770.max_stack_entries * 1)/4) |
721 						     NUM_ES_STACK_ENTRIES((rdev->config.rv770.max_stack_entries * 1)/4)));
722 
723 	sq_dyn_gpr_size_simd_ab_0 = (SIMDA_RING0((rdev->config.rv770.max_gprs * 38)/64) |
724 				     SIMDA_RING1((rdev->config.rv770.max_gprs * 38)/64) |
725 				     SIMDB_RING0((rdev->config.rv770.max_gprs * 38)/64) |
726 				     SIMDB_RING1((rdev->config.rv770.max_gprs * 38)/64));
727 
728 	WREG32(SQ_DYN_GPR_SIZE_SIMD_AB_0, sq_dyn_gpr_size_simd_ab_0);
729 	WREG32(SQ_DYN_GPR_SIZE_SIMD_AB_1, sq_dyn_gpr_size_simd_ab_0);
730 	WREG32(SQ_DYN_GPR_SIZE_SIMD_AB_2, sq_dyn_gpr_size_simd_ab_0);
731 	WREG32(SQ_DYN_GPR_SIZE_SIMD_AB_3, sq_dyn_gpr_size_simd_ab_0);
732 	WREG32(SQ_DYN_GPR_SIZE_SIMD_AB_4, sq_dyn_gpr_size_simd_ab_0);
733 	WREG32(SQ_DYN_GPR_SIZE_SIMD_AB_5, sq_dyn_gpr_size_simd_ab_0);
734 	WREG32(SQ_DYN_GPR_SIZE_SIMD_AB_6, sq_dyn_gpr_size_simd_ab_0);
735 	WREG32(SQ_DYN_GPR_SIZE_SIMD_AB_7, sq_dyn_gpr_size_simd_ab_0);
736 
737 	WREG32(PA_SC_FORCE_EOV_MAX_CNTS, (FORCE_EOV_MAX_CLK_CNT(4095) |
738 					  FORCE_EOV_MAX_REZ_CNT(255)));
739 
740 	if (rdev->family == CHIP_RV710)
741 		WREG32(VGT_CACHE_INVALIDATION, (CACHE_INVALIDATION(TC_ONLY) |
742 						AUTO_INVLD_EN(ES_AND_GS_AUTO)));
743 	else
744 		WREG32(VGT_CACHE_INVALIDATION, (CACHE_INVALIDATION(VC_AND_TC) |
745 						AUTO_INVLD_EN(ES_AND_GS_AUTO)));
746 
747 	switch (rdev->family) {
748 	case CHIP_RV770:
749 	case CHIP_RV730:
750 	case CHIP_RV740:
751 		gs_prim_buffer_depth = 384;
752 		break;
753 	case CHIP_RV710:
754 		gs_prim_buffer_depth = 128;
755 		break;
756 	default:
757 		break;
758 	}
759 
760 	num_gs_verts_per_thread = rdev->config.rv770.max_pipes * 16;
761 	vgt_gs_per_es = gs_prim_buffer_depth + num_gs_verts_per_thread;
762 	/* Max value for this is 256 */
763 	if (vgt_gs_per_es > 256)
764 		vgt_gs_per_es = 256;
765 
766 	WREG32(VGT_ES_PER_GS, 128);
767 	WREG32(VGT_GS_PER_ES, vgt_gs_per_es);
768 	WREG32(VGT_GS_PER_VS, 2);
769 
770 	/* more default values. 2D/3D driver should adjust as needed */
771 	WREG32(VGT_GS_VERTEX_REUSE, 16);
772 	WREG32(PA_SC_LINE_STIPPLE_STATE, 0);
773 	WREG32(VGT_STRMOUT_EN, 0);
774 	WREG32(SX_MISC, 0);
775 	WREG32(PA_SC_MODE_CNTL, 0);
776 	WREG32(PA_SC_EDGERULE, 0xaaaaaaaa);
777 	WREG32(PA_SC_AA_CONFIG, 0);
778 	WREG32(PA_SC_CLIPRECT_RULE, 0xffff);
779 	WREG32(PA_SC_LINE_STIPPLE, 0);
780 	WREG32(SPI_INPUT_Z, 0);
781 	WREG32(SPI_PS_IN_CONTROL_0, NUM_INTERP(2));
782 	WREG32(CB_COLOR7_FRAG, 0);
783 
784 	/* clear render buffer base addresses */
785 	WREG32(CB_COLOR0_BASE, 0);
786 	WREG32(CB_COLOR1_BASE, 0);
787 	WREG32(CB_COLOR2_BASE, 0);
788 	WREG32(CB_COLOR3_BASE, 0);
789 	WREG32(CB_COLOR4_BASE, 0);
790 	WREG32(CB_COLOR5_BASE, 0);
791 	WREG32(CB_COLOR6_BASE, 0);
792 	WREG32(CB_COLOR7_BASE, 0);
793 
794 	WREG32(TCP_CNTL, 0);
795 
796 	hdp_host_path_cntl = RREG32(HDP_HOST_PATH_CNTL);
797 	WREG32(HDP_HOST_PATH_CNTL, hdp_host_path_cntl);
798 
799 	WREG32(PA_SC_MULTI_CHIP_CNTL, 0);
800 
801 	WREG32(PA_CL_ENHANCE, (CLIP_VTX_REORDER_ENA |
802 					  NUM_CLIP_SEQ(3)));
803 	WREG32(VC_ENHANCE, 0);
804 }
805 
806 void r700_vram_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
807 {
808 	u64 size_bf, size_af;
809 
810 	if (mc->mc_vram_size > 0xE0000000) {
811 		/* leave room for at least 512M GTT */
812 		dev_warn(rdev->dev, "limiting VRAM\n");
813 		mc->real_vram_size = 0xE0000000;
814 		mc->mc_vram_size = 0xE0000000;
815 	}
816 	if (rdev->flags & RADEON_IS_AGP) {
817 		size_bf = mc->gtt_start;
818 		size_af = 0xFFFFFFFF - mc->gtt_end;
819 		if (size_bf > size_af) {
820 			if (mc->mc_vram_size > size_bf) {
821 				dev_warn(rdev->dev, "limiting VRAM\n");
822 				mc->real_vram_size = size_bf;
823 				mc->mc_vram_size = size_bf;
824 			}
825 			mc->vram_start = mc->gtt_start - mc->mc_vram_size;
826 		} else {
827 			if (mc->mc_vram_size > size_af) {
828 				dev_warn(rdev->dev, "limiting VRAM\n");
829 				mc->real_vram_size = size_af;
830 				mc->mc_vram_size = size_af;
831 			}
832 			mc->vram_start = mc->gtt_end + 1;
833 		}
834 		mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
835 		dev_info(rdev->dev, "VRAM: %lluM 0x%08llX - 0x%08llX (%lluM used)\n",
836 				mc->mc_vram_size >> 20, mc->vram_start,
837 				mc->vram_end, mc->real_vram_size >> 20);
838 	} else {
839 		radeon_vram_location(rdev, &rdev->mc, 0);
840 		rdev->mc.gtt_base_align = 0;
841 		radeon_gtt_location(rdev, mc);
842 	}
843 }
844 
845 static int rv770_mc_init(struct radeon_device *rdev)
846 {
847 	u32 tmp;
848 	int chansize, numchan;
849 
850 	/* Get VRAM informations */
851 	rdev->mc.vram_is_ddr = true;
852 	tmp = RREG32(MC_ARB_RAMCFG);
853 	if (tmp & CHANSIZE_OVERRIDE) {
854 		chansize = 16;
855 	} else if (tmp & CHANSIZE_MASK) {
856 		chansize = 64;
857 	} else {
858 		chansize = 32;
859 	}
860 	tmp = RREG32(MC_SHARED_CHMAP);
861 	switch ((tmp & NOOFCHAN_MASK) >> NOOFCHAN_SHIFT) {
862 	case 0:
863 	default:
864 		numchan = 1;
865 		break;
866 	case 1:
867 		numchan = 2;
868 		break;
869 	case 2:
870 		numchan = 4;
871 		break;
872 	case 3:
873 		numchan = 8;
874 		break;
875 	}
876 	rdev->mc.vram_width = numchan * chansize;
877 	/* Could aper size report 0 ? */
878 	rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0);
879 	rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0);
880 	/* Setup GPU memory space */
881 	rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE);
882 	rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE);
883 	rdev->mc.visible_vram_size = rdev->mc.aper_size;
884 	r700_vram_gtt_location(rdev, &rdev->mc);
885 	radeon_update_bandwidth_info(rdev);
886 
887 	return 0;
888 }
889 
890 /**
891  * rv770_copy_dma - copy pages using the DMA engine
892  *
893  * @rdev: radeon_device pointer
894  * @src_offset: src GPU address
895  * @dst_offset: dst GPU address
896  * @num_gpu_pages: number of GPU pages to xfer
897  * @fence: radeon fence object
898  *
899  * Copy GPU paging using the DMA engine (r7xx).
900  * Used by the radeon ttm implementation to move pages if
901  * registered as the asic copy callback.
902  */
903 int rv770_copy_dma(struct radeon_device *rdev,
904 		  uint64_t src_offset, uint64_t dst_offset,
905 		  unsigned num_gpu_pages,
906 		  struct radeon_fence **fence)
907 {
908 	struct radeon_semaphore *sem = NULL;
909 	int ring_index = rdev->asic->copy.dma_ring_index;
910 	struct radeon_ring *ring = &rdev->ring[ring_index];
911 	u32 size_in_dw, cur_size_in_dw;
912 	int i, num_loops;
913 	int r = 0;
914 
915 	r = radeon_semaphore_create(rdev, &sem);
916 	if (r) {
917 		DRM_ERROR("radeon: moving bo (%d).\n", r);
918 		return r;
919 	}
920 
921 	size_in_dw = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT) / 4;
922 	num_loops = DIV_ROUND_UP(size_in_dw, 0xFFFF);
923 	r = radeon_ring_lock(rdev, ring, num_loops * 5 + 8);
924 	if (r) {
925 		DRM_ERROR("radeon: moving bo (%d).\n", r);
926 		radeon_semaphore_free(rdev, &sem, NULL);
927 		return r;
928 	}
929 
930 	if (radeon_fence_need_sync(*fence, ring->idx)) {
931 		radeon_semaphore_sync_rings(rdev, sem, (*fence)->ring,
932 					    ring->idx);
933 		radeon_fence_note_sync(*fence, ring->idx);
934 	} else {
935 		radeon_semaphore_free(rdev, &sem, NULL);
936 	}
937 
938 	for (i = 0; i < num_loops; i++) {
939 		cur_size_in_dw = size_in_dw;
940 		if (cur_size_in_dw > 0xFFFF)
941 			cur_size_in_dw = 0xFFFF;
942 		size_in_dw -= cur_size_in_dw;
943 		radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 0, 0, cur_size_in_dw));
944 		radeon_ring_write(ring, dst_offset & 0xfffffffc);
945 		radeon_ring_write(ring, src_offset & 0xfffffffc);
946 		radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff);
947 		radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff);
948 		src_offset += cur_size_in_dw * 4;
949 		dst_offset += cur_size_in_dw * 4;
950 	}
951 
952 	r = radeon_fence_emit(rdev, fence, ring->idx);
953 	if (r) {
954 		radeon_ring_unlock_undo(rdev, ring);
955 		return r;
956 	}
957 
958 	radeon_ring_unlock_commit(rdev, ring);
959 	radeon_semaphore_free(rdev, &sem, *fence);
960 
961 	return r;
962 }
963 
964 static int rv770_startup(struct radeon_device *rdev)
965 {
966 	struct radeon_ring *ring;
967 	int r;
968 
969 	/* enable pcie gen2 link */
970 	rv770_pcie_gen2_enable(rdev);
971 
972 	if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
973 		r = r600_init_microcode(rdev);
974 		if (r) {
975 			DRM_ERROR("Failed to load firmware!\n");
976 			return r;
977 		}
978 	}
979 
980 	r = r600_vram_scratch_init(rdev);
981 	if (r)
982 		return r;
983 
984 	rv770_mc_program(rdev);
985 	if (rdev->flags & RADEON_IS_AGP) {
986 		rv770_agp_enable(rdev);
987 	} else {
988 		r = rv770_pcie_gart_enable(rdev);
989 		if (r)
990 			return r;
991 	}
992 
993 	rv770_gpu_init(rdev);
994 	r = r600_blit_init(rdev);
995 	if (r) {
996 		r600_blit_fini(rdev);
997 		rdev->asic->copy.copy = NULL;
998 		dev_warn(rdev->dev, "failed blitter (%d) falling back to memcpy\n", r);
999 	}
1000 
1001 	/* allocate wb buffer */
1002 	r = radeon_wb_init(rdev);
1003 	if (r)
1004 		return r;
1005 
1006 	r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
1007 	if (r) {
1008 		dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
1009 		return r;
1010 	}
1011 
1012 	r = radeon_fence_driver_start_ring(rdev, R600_RING_TYPE_DMA_INDEX);
1013 	if (r) {
1014 		dev_err(rdev->dev, "failed initializing DMA fences (%d).\n", r);
1015 		return r;
1016 	}
1017 
1018 	/* Enable IRQ */
1019 	r = r600_irq_init(rdev);
1020 	if (r) {
1021 		DRM_ERROR("radeon: IH init failed (%d).\n", r);
1022 		radeon_irq_kms_fini(rdev);
1023 		return r;
1024 	}
1025 	r600_irq_set(rdev);
1026 
1027 	ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
1028 	r = radeon_ring_init(rdev, ring, ring->ring_size, RADEON_WB_CP_RPTR_OFFSET,
1029 			     R600_CP_RB_RPTR, R600_CP_RB_WPTR,
1030 			     0, 0xfffff, RADEON_CP_PACKET2);
1031 	if (r)
1032 		return r;
1033 
1034 	ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX];
1035 	r = radeon_ring_init(rdev, ring, ring->ring_size, R600_WB_DMA_RPTR_OFFSET,
1036 			     DMA_RB_RPTR, DMA_RB_WPTR,
1037 			     2, 0x3fffc, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0));
1038 	if (r)
1039 		return r;
1040 
1041 	r = rv770_cp_load_microcode(rdev);
1042 	if (r)
1043 		return r;
1044 	r = r600_cp_resume(rdev);
1045 	if (r)
1046 		return r;
1047 
1048 	r = r600_dma_resume(rdev);
1049 	if (r)
1050 		return r;
1051 
1052 	r = radeon_ib_pool_init(rdev);
1053 	if (r) {
1054 		dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
1055 		return r;
1056 	}
1057 
1058 	r = r600_audio_init(rdev);
1059 	if (r) {
1060 		DRM_ERROR("radeon: audio init failed\n");
1061 		return r;
1062 	}
1063 
1064 	return 0;
1065 }
1066 
1067 int rv770_resume(struct radeon_device *rdev)
1068 {
1069 	int r;
1070 
1071 	/* Do not reset GPU before posting, on rv770 hw unlike on r500 hw,
1072 	 * posting will perform necessary task to bring back GPU into good
1073 	 * shape.
1074 	 */
1075 	/* post card */
1076 	atom_asic_init(rdev->mode_info.atom_context);
1077 
1078 	rdev->accel_working = true;
1079 	r = rv770_startup(rdev);
1080 	if (r) {
1081 		DRM_ERROR("r600 startup failed on resume\n");
1082 		rdev->accel_working = false;
1083 		return r;
1084 	}
1085 
1086 	return r;
1087 
1088 }
1089 
1090 int rv770_suspend(struct radeon_device *rdev)
1091 {
1092 	r600_audio_fini(rdev);
1093 	r700_cp_stop(rdev);
1094 	r600_dma_stop(rdev);
1095 	r600_irq_suspend(rdev);
1096 	radeon_wb_disable(rdev);
1097 	rv770_pcie_gart_disable(rdev);
1098 
1099 	return 0;
1100 }
1101 
1102 /* Plan is to move initialization in that function and use
1103  * helper function so that radeon_device_init pretty much
1104  * do nothing more than calling asic specific function. This
1105  * should also allow to remove a bunch of callback function
1106  * like vram_info.
1107  */
1108 int rv770_init(struct radeon_device *rdev)
1109 {
1110 	int r;
1111 
1112 	/* Read BIOS */
1113 	if (!radeon_get_bios(rdev)) {
1114 		if (ASIC_IS_AVIVO(rdev))
1115 			return -EINVAL;
1116 	}
1117 	/* Must be an ATOMBIOS */
1118 	if (!rdev->is_atom_bios) {
1119 		dev_err(rdev->dev, "Expecting atombios for R600 GPU\n");
1120 		return -EINVAL;
1121 	}
1122 	r = radeon_atombios_init(rdev);
1123 	if (r)
1124 		return r;
1125 	/* Post card if necessary */
1126 	if (!radeon_card_posted(rdev)) {
1127 		if (!rdev->bios) {
1128 			dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
1129 			return -EINVAL;
1130 		}
1131 		DRM_INFO("GPU not posted. posting now...\n");
1132 		atom_asic_init(rdev->mode_info.atom_context);
1133 	}
1134 	/* Initialize scratch registers */
1135 	r600_scratch_init(rdev);
1136 	/* Initialize surface registers */
1137 	radeon_surface_init(rdev);
1138 	/* Initialize clocks */
1139 	radeon_get_clock_info(rdev->ddev);
1140 	/* Fence driver */
1141 	r = radeon_fence_driver_init(rdev);
1142 	if (r)
1143 		return r;
1144 	/* initialize AGP */
1145 	if (rdev->flags & RADEON_IS_AGP) {
1146 		r = radeon_agp_init(rdev);
1147 		if (r)
1148 			radeon_agp_disable(rdev);
1149 	}
1150 	r = rv770_mc_init(rdev);
1151 	if (r)
1152 		return r;
1153 	/* Memory manager */
1154 	r = radeon_bo_init(rdev);
1155 	if (r)
1156 		return r;
1157 
1158 	r = radeon_irq_kms_init(rdev);
1159 	if (r)
1160 		return r;
1161 
1162 	rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ring_obj = NULL;
1163 	r600_ring_init(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX], 1024 * 1024);
1164 
1165 	rdev->ring[R600_RING_TYPE_DMA_INDEX].ring_obj = NULL;
1166 	r600_ring_init(rdev, &rdev->ring[R600_RING_TYPE_DMA_INDEX], 64 * 1024);
1167 
1168 	rdev->ih.ring_obj = NULL;
1169 	r600_ih_ring_init(rdev, 64 * 1024);
1170 
1171 	r = r600_pcie_gart_init(rdev);
1172 	if (r)
1173 		return r;
1174 
1175 	rdev->accel_working = true;
1176 	r = rv770_startup(rdev);
1177 	if (r) {
1178 		dev_err(rdev->dev, "disabling GPU acceleration\n");
1179 		r700_cp_fini(rdev);
1180 		r600_dma_fini(rdev);
1181 		r600_irq_fini(rdev);
1182 		radeon_wb_fini(rdev);
1183 		radeon_ib_pool_fini(rdev);
1184 		radeon_irq_kms_fini(rdev);
1185 		rv770_pcie_gart_fini(rdev);
1186 		rdev->accel_working = false;
1187 	}
1188 
1189 	return 0;
1190 }
1191 
1192 void rv770_fini(struct radeon_device *rdev)
1193 {
1194 	r600_blit_fini(rdev);
1195 	r700_cp_fini(rdev);
1196 	r600_dma_fini(rdev);
1197 	r600_irq_fini(rdev);
1198 	radeon_wb_fini(rdev);
1199 	radeon_ib_pool_fini(rdev);
1200 	radeon_irq_kms_fini(rdev);
1201 	rv770_pcie_gart_fini(rdev);
1202 	r600_vram_scratch_fini(rdev);
1203 	radeon_gem_fini(rdev);
1204 	radeon_fence_driver_fini(rdev);
1205 	radeon_agp_fini(rdev);
1206 	radeon_bo_fini(rdev);
1207 	radeon_atombios_fini(rdev);
1208 	kfree(rdev->bios);
1209 	rdev->bios = NULL;
1210 }
1211 
1212 static void rv770_pcie_gen2_enable(struct radeon_device *rdev)
1213 {
1214 	u32 link_width_cntl, lanes, speed_cntl, tmp;
1215 	u16 link_cntl2;
1216 	u32 mask;
1217 	int ret;
1218 
1219 	if (radeon_pcie_gen2 == 0)
1220 		return;
1221 
1222 	if (rdev->flags & RADEON_IS_IGP)
1223 		return;
1224 
1225 	if (!(rdev->flags & RADEON_IS_PCIE))
1226 		return;
1227 
1228 	/* x2 cards have a special sequence */
1229 	if (ASIC_IS_X2(rdev))
1230 		return;
1231 
1232 	ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
1233 	if (ret != 0)
1234 		return;
1235 
1236 	if (!(mask & DRM_PCIE_SPEED_50))
1237 		return;
1238 
1239 	DRM_INFO("enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0\n");
1240 
1241 	/* advertise upconfig capability */
1242 	link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
1243 	link_width_cntl &= ~LC_UPCONFIGURE_DIS;
1244 	WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
1245 	link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
1246 	if (link_width_cntl & LC_RENEGOTIATION_SUPPORT) {
1247 		lanes = (link_width_cntl & LC_LINK_WIDTH_RD_MASK) >> LC_LINK_WIDTH_RD_SHIFT;
1248 		link_width_cntl &= ~(LC_LINK_WIDTH_MASK |
1249 				     LC_RECONFIG_ARC_MISSING_ESCAPE);
1250 		link_width_cntl |= lanes | LC_RECONFIG_NOW |
1251 			LC_RENEGOTIATE_EN | LC_UPCONFIGURE_SUPPORT;
1252 		WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
1253 	} else {
1254 		link_width_cntl |= LC_UPCONFIGURE_DIS;
1255 		WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
1256 	}
1257 
1258 	speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
1259 	if ((speed_cntl & LC_OTHER_SIDE_EVER_SENT_GEN2) &&
1260 	    (speed_cntl & LC_OTHER_SIDE_SUPPORTS_GEN2)) {
1261 
1262 		tmp = RREG32(0x541c);
1263 		WREG32(0x541c, tmp | 0x8);
1264 		WREG32(MM_CFGREGS_CNTL, MM_WR_TO_CFG_EN);
1265 		link_cntl2 = RREG16(0x4088);
1266 		link_cntl2 &= ~TARGET_LINK_SPEED_MASK;
1267 		link_cntl2 |= 0x2;
1268 		WREG16(0x4088, link_cntl2);
1269 		WREG32(MM_CFGREGS_CNTL, 0);
1270 
1271 		speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
1272 		speed_cntl &= ~LC_TARGET_LINK_SPEED_OVERRIDE_EN;
1273 		WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
1274 
1275 		speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
1276 		speed_cntl |= LC_CLR_FAILED_SPD_CHANGE_CNT;
1277 		WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
1278 
1279 		speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
1280 		speed_cntl &= ~LC_CLR_FAILED_SPD_CHANGE_CNT;
1281 		WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
1282 
1283 		speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
1284 		speed_cntl |= LC_GEN2_EN_STRAP;
1285 		WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
1286 
1287 	} else {
1288 		link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
1289 		/* XXX: only disable it if gen1 bridge vendor == 0x111d or 0x1106 */
1290 		if (1)
1291 			link_width_cntl |= LC_UPCONFIGURE_DIS;
1292 		else
1293 			link_width_cntl &= ~LC_UPCONFIGURE_DIS;
1294 		WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
1295 	}
1296 }
1297