This source file includes following definitions.
- trace_write_gather
- submit_gathers
- synchronize_syncpt_base
- host1x_channel_set_streamid
- channel_submit
- enable_gather_filter
- host1x_channel_init
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8 #include <linux/host1x.h>
9 #include <linux/iommu.h>
10 #include <linux/slab.h>
11
12 #include <trace/events/host1x.h>
13
14 #include "../channel.h"
15 #include "../dev.h"
16 #include "../intr.h"
17 #include "../job.h"
18
19 #define TRACE_MAX_LENGTH 128U
20
21 static void trace_write_gather(struct host1x_cdma *cdma, struct host1x_bo *bo,
22 u32 offset, u32 words)
23 {
24 struct device *dev = cdma_to_channel(cdma)->dev;
25 void *mem = NULL;
26
27 if (host1x_debug_trace_cmdbuf)
28 mem = host1x_bo_mmap(bo);
29
30 if (mem) {
31 u32 i;
32
33
34
35
36 for (i = 0; i < words; i += TRACE_MAX_LENGTH) {
37 u32 num_words = min(words - i, TRACE_MAX_LENGTH);
38
39 offset += i * sizeof(u32);
40
41 trace_host1x_cdma_push_gather(dev_name(dev), bo,
42 num_words, offset,
43 mem);
44 }
45
46 host1x_bo_munmap(bo, mem);
47 }
48 }
49
50 static void submit_gathers(struct host1x_job *job)
51 {
52 struct host1x_cdma *cdma = &job->channel->cdma;
53 #if HOST1X_HW < 6
54 struct device *dev = job->channel->dev;
55 #endif
56 unsigned int i;
57
58 for (i = 0; i < job->num_gathers; i++) {
59 struct host1x_job_gather *g = &job->gathers[i];
60 dma_addr_t addr = g->base + g->offset;
61 u32 op2, op3;
62
63 op2 = lower_32_bits(addr);
64 op3 = upper_32_bits(addr);
65
66 trace_write_gather(cdma, g->bo, g->offset, g->words);
67
68 if (op3 != 0) {
69 #if HOST1X_HW >= 6
70 u32 op1 = host1x_opcode_gather_wide(g->words);
71 u32 op4 = HOST1X_OPCODE_NOP;
72
73 host1x_cdma_push_wide(cdma, op1, op2, op3, op4);
74 #else
75 dev_err(dev, "invalid gather for push buffer %pad\n",
76 &addr);
77 continue;
78 #endif
79 } else {
80 u32 op1 = host1x_opcode_gather(g->words);
81
82 host1x_cdma_push(cdma, op1, op2);
83 }
84 }
85 }
86
87 static inline void synchronize_syncpt_base(struct host1x_job *job)
88 {
89 struct host1x *host = dev_get_drvdata(job->channel->dev->parent);
90 struct host1x_syncpt *sp = host->syncpt + job->syncpt_id;
91 unsigned int id;
92 u32 value;
93
94 value = host1x_syncpt_read_max(sp);
95 id = sp->base->id;
96
97 host1x_cdma_push(&job->channel->cdma,
98 host1x_opcode_setclass(HOST1X_CLASS_HOST1X,
99 HOST1X_UCLASS_LOAD_SYNCPT_BASE, 1),
100 HOST1X_UCLASS_LOAD_SYNCPT_BASE_BASE_INDX_F(id) |
101 HOST1X_UCLASS_LOAD_SYNCPT_BASE_VALUE_F(value));
102 }
103
104 static void host1x_channel_set_streamid(struct host1x_channel *channel)
105 {
106 #if HOST1X_HW >= 6
107 u32 sid = 0x7f;
108 #ifdef CONFIG_IOMMU_API
109 struct iommu_fwspec *spec = dev_iommu_fwspec_get(channel->dev->parent);
110 if (spec)
111 sid = spec->ids[0] & 0xffff;
112 #endif
113
114 host1x_ch_writel(channel, sid, HOST1X_CHANNEL_SMMU_STREAMID);
115 #endif
116 }
117
118 static int channel_submit(struct host1x_job *job)
119 {
120 struct host1x_channel *ch = job->channel;
121 struct host1x_syncpt *sp;
122 u32 user_syncpt_incrs = job->syncpt_incrs;
123 u32 prev_max = 0;
124 u32 syncval;
125 int err;
126 struct host1x_waitlist *completed_waiter = NULL;
127 struct host1x *host = dev_get_drvdata(ch->dev->parent);
128
129 sp = host->syncpt + job->syncpt_id;
130 trace_host1x_channel_submit(dev_name(ch->dev),
131 job->num_gathers, job->num_relocs,
132 job->syncpt_id, job->syncpt_incrs);
133
134
135 prev_max = job->syncpt_end = host1x_syncpt_read_max(sp);
136
137
138 err = mutex_lock_interruptible(&ch->submitlock);
139 if (err)
140 goto error;
141
142 completed_waiter = kzalloc(sizeof(*completed_waiter), GFP_KERNEL);
143 if (!completed_waiter) {
144 mutex_unlock(&ch->submitlock);
145 err = -ENOMEM;
146 goto error;
147 }
148
149 host1x_channel_set_streamid(ch);
150
151
152 err = host1x_cdma_begin(&ch->cdma, job);
153 if (err) {
154 mutex_unlock(&ch->submitlock);
155 goto error;
156 }
157
158 if (job->serialize) {
159
160
161
162
163 host1x_cdma_push(&ch->cdma,
164 host1x_opcode_setclass(HOST1X_CLASS_HOST1X,
165 host1x_uclass_wait_syncpt_r(), 1),
166 host1x_class_host_wait_syncpt(job->syncpt_id,
167 host1x_syncpt_read_max(sp)));
168 }
169
170
171 if (sp->base)
172 synchronize_syncpt_base(job);
173
174 syncval = host1x_syncpt_incr_max(sp, user_syncpt_incrs);
175
176 host1x_hw_syncpt_assign_to_channel(host, sp, ch);
177
178 job->syncpt_end = syncval;
179
180
181 if (job->class)
182 host1x_cdma_push(&ch->cdma,
183 host1x_opcode_setclass(job->class, 0, 0),
184 HOST1X_OPCODE_NOP);
185
186 submit_gathers(job);
187
188
189 host1x_cdma_end(&ch->cdma, job);
190
191 trace_host1x_channel_submitted(dev_name(ch->dev), prev_max, syncval);
192
193
194 err = host1x_intr_add_action(host, sp, syncval,
195 HOST1X_INTR_ACTION_SUBMIT_COMPLETE, ch,
196 completed_waiter, NULL);
197 completed_waiter = NULL;
198 WARN(err, "Failed to set submit complete interrupt");
199
200 mutex_unlock(&ch->submitlock);
201
202 return 0;
203
204 error:
205 kfree(completed_waiter);
206 return err;
207 }
208
209 static void enable_gather_filter(struct host1x *host,
210 struct host1x_channel *ch)
211 {
212 #if HOST1X_HW >= 6
213 u32 val;
214
215 if (!host->hv_regs)
216 return;
217
218 val = host1x_hypervisor_readl(
219 host, HOST1X_HV_CH_KERNEL_FILTER_GBUFFER(ch->id / 32));
220 val |= BIT(ch->id % 32);
221 host1x_hypervisor_writel(
222 host, val, HOST1X_HV_CH_KERNEL_FILTER_GBUFFER(ch->id / 32));
223 #elif HOST1X_HW >= 4
224 host1x_ch_writel(ch,
225 HOST1X_CHANNEL_CHANNELCTRL_KERNEL_FILTER_GBUFFER(1),
226 HOST1X_CHANNEL_CHANNELCTRL);
227 #endif
228 }
229
230 static int host1x_channel_init(struct host1x_channel *ch, struct host1x *dev,
231 unsigned int index)
232 {
233 #if HOST1X_HW < 6
234 ch->regs = dev->regs + index * 0x4000;
235 #else
236 ch->regs = dev->regs + index * 0x100;
237 #endif
238 enable_gather_filter(dev, ch);
239 return 0;
240 }
241
242 static const struct host1x_channel_ops host1x_channel_ops = {
243 .init = host1x_channel_init,
244 .submit = channel_submit,
245 };