1
2
3
4#include <linux/interrupt.h>
5#include <linux/iopoll.h>
6#include <linux/device.h>
7#include <linux/slab.h>
8
9#include <drm/lima_drm.h>
10
11#include "lima_device.h"
12#include "lima_gp.h"
13#include "lima_regs.h"
14#include "lima_gem.h"
15#include "lima_vm.h"
16
17#define gp_write(reg, data) writel(data, ip->iomem + reg)
18#define gp_read(reg) readl(ip->iomem + reg)
19
20static irqreturn_t lima_gp_irq_handler(int irq, void *data)
21{
22 struct lima_ip *ip = data;
23 struct lima_device *dev = ip->dev;
24 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp;
25 struct lima_sched_task *task = pipe->current_task;
26 u32 state = gp_read(LIMA_GP_INT_STAT);
27 u32 status = gp_read(LIMA_GP_STATUS);
28 bool done = false;
29
30
31 if (!state)
32 return IRQ_NONE;
33
34 if (state & LIMA_GP_IRQ_MASK_ERROR) {
35 if ((state & LIMA_GP_IRQ_MASK_ERROR) ==
36 LIMA_GP_IRQ_PLBU_OUT_OF_MEM) {
37 dev_dbg(dev->dev, "gp out of heap irq status=%x\n",
38 status);
39 } else {
40 dev_err(dev->dev, "gp error irq state=%x status=%x\n",
41 state, status);
42 if (task)
43 task->recoverable = false;
44 }
45
46
47 gp_write(LIMA_GP_INT_MASK, 0);
48
49 pipe->error = true;
50 done = true;
51 } else {
52 bool valid = state & (LIMA_GP_IRQ_VS_END_CMD_LST |
53 LIMA_GP_IRQ_PLBU_END_CMD_LST);
54 bool active = status & (LIMA_GP_STATUS_VS_ACTIVE |
55 LIMA_GP_STATUS_PLBU_ACTIVE);
56 done = valid && !active;
57 pipe->error = false;
58 }
59
60 gp_write(LIMA_GP_INT_CLEAR, state);
61
62 if (done)
63 lima_sched_pipe_task_done(pipe);
64
65 return IRQ_HANDLED;
66}
67
68static void lima_gp_soft_reset_async(struct lima_ip *ip)
69{
70 if (ip->data.async_reset)
71 return;
72
73 gp_write(LIMA_GP_INT_MASK, 0);
74 gp_write(LIMA_GP_INT_CLEAR, LIMA_GP_IRQ_RESET_COMPLETED);
75 gp_write(LIMA_GP_CMD, LIMA_GP_CMD_SOFT_RESET);
76 ip->data.async_reset = true;
77}
78
79static int lima_gp_soft_reset_async_wait(struct lima_ip *ip)
80{
81 struct lima_device *dev = ip->dev;
82 int err;
83 u32 v;
84
85 if (!ip->data.async_reset)
86 return 0;
87
88 err = readl_poll_timeout(ip->iomem + LIMA_GP_INT_RAWSTAT, v,
89 v & LIMA_GP_IRQ_RESET_COMPLETED,
90 0, 100);
91 if (err) {
92 dev_err(dev->dev, "gp soft reset time out\n");
93 return err;
94 }
95
96 gp_write(LIMA_GP_INT_CLEAR, LIMA_GP_IRQ_MASK_ALL);
97 gp_write(LIMA_GP_INT_MASK, LIMA_GP_IRQ_MASK_USED);
98
99 ip->data.async_reset = false;
100 return 0;
101}
102
103static int lima_gp_task_validate(struct lima_sched_pipe *pipe,
104 struct lima_sched_task *task)
105{
106 struct drm_lima_gp_frame *frame = task->frame;
107 u32 *f = frame->frame;
108 (void)pipe;
109
110 if (f[LIMA_GP_VSCL_START_ADDR >> 2] >
111 f[LIMA_GP_VSCL_END_ADDR >> 2] ||
112 f[LIMA_GP_PLBUCL_START_ADDR >> 2] >
113 f[LIMA_GP_PLBUCL_END_ADDR >> 2] ||
114 f[LIMA_GP_PLBU_ALLOC_START_ADDR >> 2] >
115 f[LIMA_GP_PLBU_ALLOC_END_ADDR >> 2])
116 return -EINVAL;
117
118 if (f[LIMA_GP_VSCL_START_ADDR >> 2] ==
119 f[LIMA_GP_VSCL_END_ADDR >> 2] &&
120 f[LIMA_GP_PLBUCL_START_ADDR >> 2] ==
121 f[LIMA_GP_PLBUCL_END_ADDR >> 2])
122 return -EINVAL;
123
124 return 0;
125}
126
127static void lima_gp_task_run(struct lima_sched_pipe *pipe,
128 struct lima_sched_task *task)
129{
130 struct lima_ip *ip = pipe->processor[0];
131 struct drm_lima_gp_frame *frame = task->frame;
132 u32 *f = frame->frame;
133 u32 cmd = 0;
134 int i;
135
136
137 for (i = 0; i < task->num_bos; i++) {
138 struct lima_bo *bo = task->bos[i];
139
140 if (bo->heap_size &&
141 lima_vm_get_va(task->vm, bo) ==
142 f[LIMA_GP_PLBU_ALLOC_START_ADDR >> 2]) {
143 f[LIMA_GP_PLBU_ALLOC_END_ADDR >> 2] =
144 f[LIMA_GP_PLBU_ALLOC_START_ADDR >> 2] +
145 bo->heap_size;
146 task->recoverable = true;
147 task->heap = bo;
148 break;
149 }
150 }
151
152 if (f[LIMA_GP_VSCL_START_ADDR >> 2] !=
153 f[LIMA_GP_VSCL_END_ADDR >> 2])
154 cmd |= LIMA_GP_CMD_START_VS;
155 if (f[LIMA_GP_PLBUCL_START_ADDR >> 2] !=
156 f[LIMA_GP_PLBUCL_END_ADDR >> 2])
157 cmd |= LIMA_GP_CMD_START_PLBU;
158
159
160 lima_gp_soft_reset_async_wait(ip);
161
162 for (i = 0; i < LIMA_GP_FRAME_REG_NUM; i++)
163 writel(f[i], ip->iomem + LIMA_GP_VSCL_START_ADDR + i * 4);
164
165 gp_write(LIMA_GP_CMD, LIMA_GP_CMD_UPDATE_PLBU_ALLOC);
166 gp_write(LIMA_GP_CMD, cmd);
167}
168
169static int lima_gp_hard_reset_poll(struct lima_ip *ip)
170{
171 gp_write(LIMA_GP_PERF_CNT_0_LIMIT, 0xC01A0000);
172 return gp_read(LIMA_GP_PERF_CNT_0_LIMIT) == 0xC01A0000;
173}
174
175static int lima_gp_hard_reset(struct lima_ip *ip)
176{
177 struct lima_device *dev = ip->dev;
178 int ret;
179
180 gp_write(LIMA_GP_PERF_CNT_0_LIMIT, 0xC0FFE000);
181 gp_write(LIMA_GP_INT_MASK, 0);
182 gp_write(LIMA_GP_CMD, LIMA_GP_CMD_RESET);
183 ret = lima_poll_timeout(ip, lima_gp_hard_reset_poll, 10, 100);
184 if (ret) {
185 dev_err(dev->dev, "gp hard reset timeout\n");
186 return ret;
187 }
188
189 gp_write(LIMA_GP_PERF_CNT_0_LIMIT, 0);
190 gp_write(LIMA_GP_INT_CLEAR, LIMA_GP_IRQ_MASK_ALL);
191 gp_write(LIMA_GP_INT_MASK, LIMA_GP_IRQ_MASK_USED);
192 return 0;
193}
194
195static void lima_gp_task_fini(struct lima_sched_pipe *pipe)
196{
197 lima_gp_soft_reset_async(pipe->processor[0]);
198}
199
200static void lima_gp_task_error(struct lima_sched_pipe *pipe)
201{
202 struct lima_ip *ip = pipe->processor[0];
203
204 dev_err(ip->dev->dev, "gp task error int_state=%x status=%x\n",
205 gp_read(LIMA_GP_INT_STAT), gp_read(LIMA_GP_STATUS));
206
207 lima_gp_hard_reset(ip);
208}
209
210static void lima_gp_task_mmu_error(struct lima_sched_pipe *pipe)
211{
212 lima_sched_pipe_task_done(pipe);
213}
214
215static int lima_gp_task_recover(struct lima_sched_pipe *pipe)
216{
217 struct lima_ip *ip = pipe->processor[0];
218 struct lima_sched_task *task = pipe->current_task;
219 struct drm_lima_gp_frame *frame = task->frame;
220 u32 *f = frame->frame;
221 size_t fail_size =
222 f[LIMA_GP_PLBU_ALLOC_END_ADDR >> 2] -
223 f[LIMA_GP_PLBU_ALLOC_START_ADDR >> 2];
224
225 if (fail_size == task->heap->heap_size) {
226 int ret;
227
228 ret = lima_heap_alloc(task->heap, task->vm);
229 if (ret < 0)
230 return ret;
231 }
232
233 gp_write(LIMA_GP_INT_MASK, LIMA_GP_IRQ_MASK_USED);
234
235 gp_write(LIMA_GP_PLBU_ALLOC_START_ADDR,
236 f[LIMA_GP_PLBU_ALLOC_END_ADDR >> 2]);
237 f[LIMA_GP_PLBU_ALLOC_END_ADDR >> 2] =
238 f[LIMA_GP_PLBU_ALLOC_START_ADDR >> 2] + task->heap->heap_size;
239 gp_write(LIMA_GP_PLBU_ALLOC_END_ADDR,
240 f[LIMA_GP_PLBU_ALLOC_END_ADDR >> 2]);
241 gp_write(LIMA_GP_CMD, LIMA_GP_CMD_UPDATE_PLBU_ALLOC);
242 return 0;
243}
244
245static void lima_gp_print_version(struct lima_ip *ip)
246{
247 u32 version, major, minor;
248 char *name;
249
250 version = gp_read(LIMA_GP_VERSION);
251 major = (version >> 8) & 0xFF;
252 minor = version & 0xFF;
253 switch (version >> 16) {
254 case 0xA07:
255 name = "mali200";
256 break;
257 case 0xC07:
258 name = "mali300";
259 break;
260 case 0xB07:
261 name = "mali400";
262 break;
263 case 0xD07:
264 name = "mali450";
265 break;
266 default:
267 name = "unknown";
268 break;
269 }
270 dev_info(ip->dev->dev, "%s - %s version major %d minor %d\n",
271 lima_ip_name(ip), name, major, minor);
272}
273
274static struct kmem_cache *lima_gp_task_slab;
275static int lima_gp_task_slab_refcnt;
276
277static int lima_gp_hw_init(struct lima_ip *ip)
278{
279 ip->data.async_reset = false;
280 lima_gp_soft_reset_async(ip);
281 return lima_gp_soft_reset_async_wait(ip);
282}
283
284int lima_gp_resume(struct lima_ip *ip)
285{
286 return lima_gp_hw_init(ip);
287}
288
289void lima_gp_suspend(struct lima_ip *ip)
290{
291
292}
293
294int lima_gp_init(struct lima_ip *ip)
295{
296 struct lima_device *dev = ip->dev;
297 int err;
298
299 lima_gp_print_version(ip);
300
301 err = lima_gp_hw_init(ip);
302 if (err)
303 return err;
304
305 err = devm_request_irq(dev->dev, ip->irq, lima_gp_irq_handler,
306 IRQF_SHARED, lima_ip_name(ip), ip);
307 if (err) {
308 dev_err(dev->dev, "gp %s fail to request irq\n",
309 lima_ip_name(ip));
310 return err;
311 }
312
313 dev->gp_version = gp_read(LIMA_GP_VERSION);
314
315 return 0;
316}
317
318void lima_gp_fini(struct lima_ip *ip)
319{
320
321}
322
323int lima_gp_pipe_init(struct lima_device *dev)
324{
325 int frame_size = sizeof(struct drm_lima_gp_frame);
326 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp;
327
328 if (!lima_gp_task_slab) {
329 lima_gp_task_slab = kmem_cache_create_usercopy(
330 "lima_gp_task", sizeof(struct lima_sched_task) + frame_size,
331 0, SLAB_HWCACHE_ALIGN, sizeof(struct lima_sched_task),
332 frame_size, NULL);
333 if (!lima_gp_task_slab)
334 return -ENOMEM;
335 }
336 lima_gp_task_slab_refcnt++;
337
338 pipe->frame_size = frame_size;
339 pipe->task_slab = lima_gp_task_slab;
340
341 pipe->task_validate = lima_gp_task_validate;
342 pipe->task_run = lima_gp_task_run;
343 pipe->task_fini = lima_gp_task_fini;
344 pipe->task_error = lima_gp_task_error;
345 pipe->task_mmu_error = lima_gp_task_mmu_error;
346 pipe->task_recover = lima_gp_task_recover;
347
348 return 0;
349}
350
351void lima_gp_pipe_fini(struct lima_device *dev)
352{
353 if (!--lima_gp_task_slab_refcnt) {
354 kmem_cache_destroy(lima_gp_task_slab);
355 lima_gp_task_slab = NULL;
356 }
357}
358
