1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
4 * Author: Rob Clark <rob@ti.com>
5 * Andy Gross <andy.gross@ti.com>
6 */
7
8#ifndef OMAP_DMM_PRIV_H
9#define OMAP_DMM_PRIV_H
10
11#define DMM_REVISION 0x000
12#define DMM_HWINFO 0x004
13#define DMM_LISA_HWINFO 0x008
14#define DMM_DMM_SYSCONFIG 0x010
15#define DMM_LISA_LOCK 0x01C
16#define DMM_LISA_MAP__0 0x040
17#define DMM_LISA_MAP__1 0x044
18#define DMM_TILER_HWINFO 0x208
19#define DMM_TILER_OR__0 0x220
20#define DMM_TILER_OR__1 0x224
21#define DMM_PAT_HWINFO 0x408
22#define DMM_PAT_GEOMETRY 0x40C
23#define DMM_PAT_CONFIG 0x410
24#define DMM_PAT_VIEW__0 0x420
25#define DMM_PAT_VIEW__1 0x424
26#define DMM_PAT_VIEW_MAP__0 0x440
27#define DMM_PAT_VIEW_MAP_BASE 0x460
28#define DMM_PAT_IRQ_EOI 0x478
29#define DMM_PAT_IRQSTATUS_RAW 0x480
30#define DMM_PAT_IRQSTATUS 0x490
31#define DMM_PAT_IRQENABLE_SET 0x4A0
32#define DMM_PAT_IRQENABLE_CLR 0x4B0
33#define DMM_PAT_STATUS__0 0x4C0
34#define DMM_PAT_STATUS__1 0x4C4
35#define DMM_PAT_STATUS__2 0x4C8
36#define DMM_PAT_STATUS__3 0x4CC
37#define DMM_PAT_DESCR__0 0x500
38#define DMM_PAT_DESCR__1 0x510
39#define DMM_PAT_DESCR__2 0x520
40#define DMM_PAT_DESCR__3 0x530
41#define DMM_PEG_HWINFO 0x608
42#define DMM_PEG_PRIO 0x620
43#define DMM_PEG_PRIO_PAT 0x640
44
45#define DMM_IRQSTAT_DST (1<<0)
46#define DMM_IRQSTAT_LST (1<<1)
47#define DMM_IRQSTAT_ERR_INV_DSC (1<<2)
48#define DMM_IRQSTAT_ERR_INV_DATA (1<<3)
49#define DMM_IRQSTAT_ERR_UPD_AREA (1<<4)
50#define DMM_IRQSTAT_ERR_UPD_CTRL (1<<5)
51#define DMM_IRQSTAT_ERR_UPD_DATA (1<<6)
52#define DMM_IRQSTAT_ERR_LUT_MISS (1<<7)
53
54#define DMM_IRQSTAT_ERR_MASK (DMM_IRQSTAT_ERR_INV_DSC | \
55 DMM_IRQSTAT_ERR_INV_DATA | \
56 DMM_IRQSTAT_ERR_UPD_AREA | \
57 DMM_IRQSTAT_ERR_UPD_CTRL | \
58 DMM_IRQSTAT_ERR_UPD_DATA | \
59 DMM_IRQSTAT_ERR_LUT_MISS)
60
61#define DMM_PATSTATUS_READY (1<<0)
62#define DMM_PATSTATUS_VALID (1<<1)
63#define DMM_PATSTATUS_RUN (1<<2)
64#define DMM_PATSTATUS_DONE (1<<3)
65#define DMM_PATSTATUS_LINKED (1<<4)
66#define DMM_PATSTATUS_BYPASSED (1<<7)
67#define DMM_PATSTATUS_ERR_INV_DESCR (1<<10)
68#define DMM_PATSTATUS_ERR_INV_DATA (1<<11)
69#define DMM_PATSTATUS_ERR_UPD_AREA (1<<12)
70#define DMM_PATSTATUS_ERR_UPD_CTRL (1<<13)
71#define DMM_PATSTATUS_ERR_UPD_DATA (1<<14)
72#define DMM_PATSTATUS_ERR_ACCESS (1<<15)
73
74/* note: don't treat DMM_PATSTATUS_ERR_ACCESS as an error */
75#define DMM_PATSTATUS_ERR (DMM_PATSTATUS_ERR_INV_DESCR | \
76 DMM_PATSTATUS_ERR_INV_DATA | \
77 DMM_PATSTATUS_ERR_UPD_AREA | \
78 DMM_PATSTATUS_ERR_UPD_CTRL | \
79 DMM_PATSTATUS_ERR_UPD_DATA)
80
81
82
83enum {
84 PAT_STATUS,
85 PAT_DESCR
86};
87
88struct pat_ctrl {
89 u32 start:4;
90 u32 dir:4;
91 u32 lut_id:8;
92 u32 sync:12;
93 u32 ini:4;
94};
95
96struct pat {
97 u32 next_pa;
98 struct pat_area area;
99 struct pat_ctrl ctrl;
100 u32 data_pa;
101};
102
103#define DMM_FIXED_RETRY_COUNT 1000
104
105/* create refill buffer big enough to refill all slots, plus 3 descriptors..
106 * 3 descriptors is probably the worst-case for # of 2d-slices in a 1d area,
107 * but I guess you don't hit that worst case at the same time as full area
108 * refill
109 */
110#define DESCR_SIZE 128
111#define REFILL_BUFFER_SIZE ((4 * 128 * 256) + (3 * DESCR_SIZE))
112
113/* For OMAP5, a fixed offset is added to all Y coordinates for 1D buffers.
114 * This is used in programming to address the upper portion of the LUT
115*/
116#define OMAP5_LUT_OFFSET 128
117
118struct dmm;
119
120struct dmm_txn {
121 void *engine_handle;
122 struct tcm *tcm;
123
124 u8 *current_va;
125 dma_addr_t current_pa;
126
127 struct pat *last_pat;
128};
129
130struct refill_engine {
131 int id;
132 struct dmm *dmm;
133 struct tcm *tcm;
134
135 u8 *refill_va;
136 dma_addr_t refill_pa;
137
138 /* only one trans per engine for now */
139 struct dmm_txn txn;
140
141 bool async;
142
143 struct completion compl;
144
145 struct list_head idle_node;
146};
147
148struct dmm_platform_data {
149 u32 cpu_cache_flags;
150};
151
152struct dmm {
153 struct device *dev;
154 dma_addr_t phys_base;
155 void __iomem *base;
156 int irq;
157
158 struct page *dummy_page;
159 dma_addr_t dummy_pa;
160
161 void *refill_va;
162 dma_addr_t refill_pa;
163
164 /* refill engines */
165 wait_queue_head_t engine_queue;
166 struct list_head idle_head;
167 struct refill_engine *engines;
168 int num_engines;
169 atomic_t engine_counter;
170
171 /* container information */
172 int container_width;
173 int container_height;
174 int lut_width;
175 int lut_height;
176 int num_lut;
177
178 /* array of LUT - TCM containers */
179 struct tcm **tcm;
180
181 /* allocation list and lock */
182 struct list_head alloc_head;
183
184 const struct dmm_platform_data *plat_data;
185
186 bool dmm_workaround;
187 spinlock_t wa_lock;
188 u32 *wa_dma_data;
189 dma_addr_t wa_dma_handle;
190 struct dma_chan *wa_dma_chan;
191};
192
193#endif
194

source code of linux/drivers/gpu/drm/omapdrm/omap_dmm_priv.h