xref: /openbmc/linux/drivers/gpu/drm/radeon/r520.c (revision 519424d7)
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 
29 #include "radeon.h"
30 #include "radeon_asic.h"
31 #include "atom.h"
32 #include "r520d.h"
33 
34 /* This files gather functions specifics to: r520,rv530,rv560,rv570,r580 */
35 
r520_mc_wait_for_idle(struct radeon_device * rdev)36 int r520_mc_wait_for_idle(struct radeon_device *rdev)
37 {
38 	unsigned i;
39 	uint32_t tmp;
40 
41 	for (i = 0; i < rdev->usec_timeout; i++) {
42 		/* read MC_STATUS */
43 		tmp = RREG32_MC(R520_MC_STATUS);
44 		if (tmp & R520_MC_STATUS_IDLE) {
45 			return 0;
46 		}
47 		udelay(1);
48 	}
49 	return -1;
50 }
51 
r520_gpu_init(struct radeon_device * rdev)52 static void r520_gpu_init(struct radeon_device *rdev)
53 {
54 	unsigned pipe_select_current, gb_pipe_select, tmp;
55 
56 	rv515_vga_render_disable(rdev);
57 	/*
58 	 * DST_PIPE_CONFIG		0x170C
59 	 * GB_TILE_CONFIG		0x4018
60 	 * GB_FIFO_SIZE			0x4024
61 	 * GB_PIPE_SELECT		0x402C
62 	 * GB_PIPE_SELECT2              0x4124
63 	 *	Z_PIPE_SHIFT			0
64 	 *	Z_PIPE_MASK			0x000000003
65 	 * GB_FIFO_SIZE2                0x4128
66 	 *	SC_SFIFO_SIZE_SHIFT		0
67 	 *	SC_SFIFO_SIZE_MASK		0x000000003
68 	 *	SC_MFIFO_SIZE_SHIFT		2
69 	 *	SC_MFIFO_SIZE_MASK		0x00000000C
70 	 *	FG_SFIFO_SIZE_SHIFT		4
71 	 *	FG_SFIFO_SIZE_MASK		0x000000030
72 	 *	ZB_MFIFO_SIZE_SHIFT		6
73 	 *	ZB_MFIFO_SIZE_MASK		0x0000000C0
74 	 * GA_ENHANCE			0x4274
75 	 * SU_REG_DEST			0x42C8
76 	 */
77 	/* workaround for RV530 */
78 	if (rdev->family == CHIP_RV530) {
79 		WREG32(0x4128, 0xFF);
80 	}
81 	r420_pipes_init(rdev);
82 	gb_pipe_select = RREG32(R400_GB_PIPE_SELECT);
83 	tmp = RREG32(R300_DST_PIPE_CONFIG);
84 	pipe_select_current = (tmp >> 2) & 3;
85 	tmp = (1 << pipe_select_current) |
86 	      (((gb_pipe_select >> 8) & 0xF) << 4);
87 	WREG32_PLL(0x000D, tmp);
88 	if (r520_mc_wait_for_idle(rdev)) {
89 		pr_warn("Failed to wait MC idle while programming pipes. Bad things might happen.\n");
90 	}
91 }
92 
r520_vram_get_type(struct radeon_device * rdev)93 static void r520_vram_get_type(struct radeon_device *rdev)
94 {
95 	uint32_t tmp;
96 
97 	rdev->mc.vram_width = 128;
98 	rdev->mc.vram_is_ddr = true;
99 	tmp = RREG32_MC(R520_MC_CNTL0);
100 	switch ((tmp & R520_MEM_NUM_CHANNELS_MASK) >> R520_MEM_NUM_CHANNELS_SHIFT) {
101 	case 0:
102 		rdev->mc.vram_width = 32;
103 		break;
104 	case 1:
105 		rdev->mc.vram_width = 64;
106 		break;
107 	case 2:
108 		rdev->mc.vram_width = 128;
109 		break;
110 	case 3:
111 		rdev->mc.vram_width = 256;
112 		break;
113 	default:
114 		rdev->mc.vram_width = 128;
115 		break;
116 	}
117 	if (tmp & R520_MC_CHANNEL_SIZE)
118 		rdev->mc.vram_width *= 2;
119 }
120 
r520_mc_init(struct radeon_device * rdev)121 static void r520_mc_init(struct radeon_device *rdev)
122 {
123 
124 	r520_vram_get_type(rdev);
125 	r100_vram_init_sizes(rdev);
126 	radeon_vram_location(rdev, &rdev->mc, 0);
127 	rdev->mc.gtt_base_align = 0;
128 	if (!(rdev->flags & RADEON_IS_AGP))
129 		radeon_gtt_location(rdev, &rdev->mc);
130 	radeon_update_bandwidth_info(rdev);
131 }
132 
r520_mc_program(struct radeon_device * rdev)133 static void r520_mc_program(struct radeon_device *rdev)
134 {
135 	struct rv515_mc_save save;
136 
137 	/* Stops all mc clients */
138 	rv515_mc_stop(rdev, &save);
139 
140 	/* Wait for mc idle */
141 	if (r520_mc_wait_for_idle(rdev))
142 		dev_warn(rdev->dev, "Wait MC idle timeout before updating MC.\n");
143 	/* Write VRAM size in case we are limiting it */
144 	WREG32(R_0000F8_CONFIG_MEMSIZE, rdev->mc.real_vram_size);
145 	/* Program MC, should be a 32bits limited address space */
146 	WREG32_MC(R_000004_MC_FB_LOCATION,
147 			S_000004_MC_FB_START(rdev->mc.vram_start >> 16) |
148 			S_000004_MC_FB_TOP(rdev->mc.vram_end >> 16));
149 	WREG32(R_000134_HDP_FB_LOCATION,
150 		S_000134_HDP_FB_START(rdev->mc.vram_start >> 16));
151 	if (rdev->flags & RADEON_IS_AGP) {
152 		WREG32_MC(R_000005_MC_AGP_LOCATION,
153 			S_000005_MC_AGP_START(rdev->mc.gtt_start >> 16) |
154 			S_000005_MC_AGP_TOP(rdev->mc.gtt_end >> 16));
155 		WREG32_MC(R_000006_AGP_BASE, lower_32_bits(rdev->mc.agp_base));
156 		WREG32_MC(R_000007_AGP_BASE_2,
157 			S_000007_AGP_BASE_ADDR_2(upper_32_bits(rdev->mc.agp_base)));
158 	} else {
159 		WREG32_MC(R_000005_MC_AGP_LOCATION, 0xFFFFFFFF);
160 		WREG32_MC(R_000006_AGP_BASE, 0);
161 		WREG32_MC(R_000007_AGP_BASE_2, 0);
162 	}
163 
164 	rv515_mc_resume(rdev, &save);
165 }
166 
r520_startup(struct radeon_device * rdev)167 static int r520_startup(struct radeon_device *rdev)
168 {
169 	int r;
170 
171 	r520_mc_program(rdev);
172 	/* Resume clock */
173 	rv515_clock_startup(rdev);
174 	/* Initialize GPU configuration (# pipes, ...) */
175 	r520_gpu_init(rdev);
176 	/* Initialize GART (initialize after TTM so we can allocate
177 	 * memory through TTM but finalize after TTM) */
178 	if (rdev->flags & RADEON_IS_PCIE) {
179 		r = rv370_pcie_gart_enable(rdev);
180 		if (r)
181 			return r;
182 	}
183 
184 	/* allocate wb buffer */
185 	r = radeon_wb_init(rdev);
186 	if (r)
187 		return r;
188 
189 	r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
190 	if (r) {
191 		dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
192 		return r;
193 	}
194 
195 	/* Enable IRQ */
196 	if (!rdev->irq.installed) {
197 		r = radeon_irq_kms_init(rdev);
198 		if (r)
199 			return r;
200 	}
201 
202 	rs600_irq_set(rdev);
203 	rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
204 	/* 1M ring buffer */
205 	r = r100_cp_init(rdev, 1024 * 1024);
206 	if (r) {
207 		dev_err(rdev->dev, "failed initializing CP (%d).\n", r);
208 		return r;
209 	}
210 
211 	r = radeon_ib_pool_init(rdev);
212 	if (r) {
213 		dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
214 		return r;
215 	}
216 
217 	return 0;
218 }
219 
r520_resume(struct radeon_device * rdev)220 int r520_resume(struct radeon_device *rdev)
221 {
222 	int r;
223 
224 	/* Make sur GART are not working */
225 	if (rdev->flags & RADEON_IS_PCIE)
226 		rv370_pcie_gart_disable(rdev);
227 	/* Resume clock before doing reset */
228 	rv515_clock_startup(rdev);
229 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
230 	if (radeon_asic_reset(rdev)) {
231 		dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
232 			RREG32(R_000E40_RBBM_STATUS),
233 			RREG32(R_0007C0_CP_STAT));
234 	}
235 	/* post */
236 	atom_asic_init(rdev->mode_info.atom_context);
237 	/* Resume clock after posting */
238 	rv515_clock_startup(rdev);
239 	/* Initialize surface registers */
240 	radeon_surface_init(rdev);
241 
242 	rdev->accel_working = true;
243 	r = r520_startup(rdev);
244 	if (r) {
245 		rdev->accel_working = false;
246 	}
247 	return r;
248 }
249 
r520_init(struct radeon_device * rdev)250 int r520_init(struct radeon_device *rdev)
251 {
252 	int r;
253 
254 	/* Initialize scratch registers */
255 	radeon_scratch_init(rdev);
256 	/* Initialize surface registers */
257 	radeon_surface_init(rdev);
258 	/* restore some register to sane defaults */
259 	r100_restore_sanity(rdev);
260 	/* TODO: disable VGA need to use VGA request */
261 	/* BIOS*/
262 	if (!radeon_get_bios(rdev)) {
263 		if (ASIC_IS_AVIVO(rdev))
264 			return -EINVAL;
265 	}
266 	if (rdev->is_atom_bios) {
267 		r = radeon_atombios_init(rdev);
268 		if (r)
269 			return r;
270 	} else {
271 		dev_err(rdev->dev, "Expecting atombios for RV515 GPU\n");
272 		return -EINVAL;
273 	}
274 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
275 	if (radeon_asic_reset(rdev)) {
276 		dev_warn(rdev->dev,
277 			"GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
278 			RREG32(R_000E40_RBBM_STATUS),
279 			RREG32(R_0007C0_CP_STAT));
280 	}
281 	/* check if cards are posted or not */
282 	if (radeon_boot_test_post_card(rdev) == false)
283 		return -EINVAL;
284 
285 	if (!radeon_card_posted(rdev) && rdev->bios) {
286 		DRM_INFO("GPU not posted. posting now...\n");
287 		atom_asic_init(rdev->mode_info.atom_context);
288 	}
289 	/* Initialize clocks */
290 	radeon_get_clock_info(rdev->ddev);
291 	/* initialize AGP */
292 	if (rdev->flags & RADEON_IS_AGP) {
293 		r = radeon_agp_init(rdev);
294 		if (r) {
295 			radeon_agp_disable(rdev);
296 		}
297 	}
298 	/* initialize memory controller */
299 	r520_mc_init(rdev);
300 	rv515_debugfs(rdev);
301 	/* Fence driver */
302 	radeon_fence_driver_init(rdev);
303 	/* Memory manager */
304 	r = radeon_bo_init(rdev);
305 	if (r)
306 		return r;
307 	r = rv370_pcie_gart_init(rdev);
308 	if (r)
309 		return r;
310 	rv515_set_safe_registers(rdev);
311 
312 	/* Initialize power management */
313 	radeon_pm_init(rdev);
314 
315 	rdev->accel_working = true;
316 	r = r520_startup(rdev);
317 	if (r) {
318 		/* Somethings want wront with the accel init stop accel */
319 		dev_err(rdev->dev, "Disabling GPU acceleration\n");
320 		r100_cp_fini(rdev);
321 		radeon_wb_fini(rdev);
322 		radeon_ib_pool_fini(rdev);
323 		radeon_irq_kms_fini(rdev);
324 		rv370_pcie_gart_fini(rdev);
325 		radeon_agp_fini(rdev);
326 		rdev->accel_working = false;
327 	}
328 	return 0;
329 }
330