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61f135b9 LW |
1 | /* |
2 | * | |
3 | * include/linux/coh901318.h | |
4 | * | |
5 | * | |
6 | * Copyright (C) 2007-2009 ST-Ericsson | |
7 | * License terms: GNU General Public License (GPL) version 2 | |
8 | * DMA driver for COH 901 318 | |
9 | * Author: Per Friden <per.friden@stericsson.com> | |
10 | */ | |
11 | ||
12 | #ifndef COH901318_H | |
13 | #define COH901318_H | |
14 | ||
15 | #include <linux/device.h> | |
16 | #include <linux/dmaengine.h> | |
17 | ||
18 | #define MAX_DMA_PACKET_SIZE_SHIFT 11 | |
19 | #define MAX_DMA_PACKET_SIZE (1 << MAX_DMA_PACKET_SIZE_SHIFT) | |
20 | ||
21 | /** | |
22 | * struct coh901318_lli - linked list item for DMAC | |
23 | * @control: control settings for DMAC | |
24 | * @src_addr: transfer source address | |
25 | * @dst_addr: transfer destination address | |
26 | * @link_addr: physical address to next lli | |
27 | * @virt_link_addr: virtual addres of next lli (only used by pool_free) | |
28 | * @phy_this: physical address of current lli (only used by pool_free) | |
29 | */ | |
30 | struct coh901318_lli { | |
31 | u32 control; | |
32 | dma_addr_t src_addr; | |
33 | dma_addr_t dst_addr; | |
34 | dma_addr_t link_addr; | |
35 | ||
36 | void *virt_link_addr; | |
37 | dma_addr_t phy_this; | |
38 | }; | |
39 | /** | |
40 | * struct coh901318_params - parameters for DMAC configuration | |
41 | * @config: DMA config register | |
42 | * @ctrl_lli_last: DMA control register for the last lli in the list | |
43 | * @ctrl_lli: DMA control register for an lli | |
44 | * @ctrl_lli_chained: DMA control register for a chained lli | |
45 | */ | |
46 | struct coh901318_params { | |
47 | u32 config; | |
48 | u32 ctrl_lli_last; | |
49 | u32 ctrl_lli; | |
50 | u32 ctrl_lli_chained; | |
51 | }; | |
52 | /** | |
53 | * struct coh_dma_channel - dma channel base | |
54 | * @name: ascii name of dma channel | |
55 | * @number: channel id number | |
b87108a7 | 56 | * @desc_nbr_max: number of preallocated descriptors |
61f135b9 LW |
57 | * @priority_high: prio of channel, 0 low otherwise high. |
58 | * @param: configuration parameters | |
59 | * @dev_addr: physical address of periphal connected to channel | |
60 | */ | |
61 | struct coh_dma_channel { | |
62 | const char name[32]; | |
63 | const int number; | |
64 | const int desc_nbr_max; | |
65 | const int priority_high; | |
66 | const struct coh901318_params param; | |
67 | const dma_addr_t dev_addr; | |
68 | }; | |
69 | ||
70 | /** | |
71 | * dma_access_memory_state_t - register dma for memory access | |
72 | * | |
73 | * @dev: The dma device | |
74 | * @active: 1 means dma intends to access memory | |
75 | * 0 means dma wont access memory | |
76 | */ | |
77 | typedef void (*dma_access_memory_state_t)(struct device *dev, | |
78 | bool active); | |
79 | ||
80 | /** | |
81 | * struct powersave - DMA power save structure | |
82 | * @lock: lock protecting data in this struct | |
83 | * @started_channels: bit mask indicating active dma channels | |
84 | */ | |
85 | struct powersave { | |
86 | spinlock_t lock; | |
87 | u64 started_channels; | |
88 | }; | |
89 | /** | |
90 | * struct coh901318_platform - platform arch structure | |
91 | * @chans_slave: specifying dma slave channels | |
92 | * @chans_memcpy: specifying dma memcpy channels | |
93 | * @access_memory_state: requesting DMA memeory access (on / off) | |
94 | * @chan_conf: dma channel configurations | |
95 | * @max_channels: max number of dma chanenls | |
96 | */ | |
97 | struct coh901318_platform { | |
98 | const int *chans_slave; | |
99 | const int *chans_memcpy; | |
100 | const dma_access_memory_state_t access_memory_state; | |
101 | const struct coh_dma_channel *chan_conf; | |
102 | const int max_channels; | |
103 | }; | |
104 | ||
61f135b9 LW |
105 | /** |
106 | * coh901318_filter_id() - DMA channel filter function | |
107 | * @chan: dma channel handle | |
108 | * @chan_id: id of dma channel to be filter out | |
109 | * | |
110 | * In dma_request_channel() it specifies what channel id to be requested | |
111 | */ | |
112 | bool coh901318_filter_id(struct dma_chan *chan, void *chan_id); | |
113 | ||
114 | /* | |
115 | * DMA Controller - this access the static mappings of the coh901318 dma. | |
116 | * | |
117 | */ | |
118 | ||
119 | #define COH901318_MOD32_MASK (0x1F) | |
120 | #define COH901318_WORD_MASK (0xFFFFFFFF) | |
121 | /* INT_STATUS - Interrupt Status Registers 32bit (R/-) */ | |
122 | #define COH901318_INT_STATUS1 (0x0000) | |
123 | #define COH901318_INT_STATUS2 (0x0004) | |
124 | /* TC_INT_STATUS - Terminal Count Interrupt Status Registers 32bit (R/-) */ | |
125 | #define COH901318_TC_INT_STATUS1 (0x0008) | |
126 | #define COH901318_TC_INT_STATUS2 (0x000C) | |
127 | /* TC_INT_CLEAR - Terminal Count Interrupt Clear Registers 32bit (-/W) */ | |
128 | #define COH901318_TC_INT_CLEAR1 (0x0010) | |
129 | #define COH901318_TC_INT_CLEAR2 (0x0014) | |
130 | /* RAW_TC_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */ | |
131 | #define COH901318_RAW_TC_INT_STATUS1 (0x0018) | |
132 | #define COH901318_RAW_TC_INT_STATUS2 (0x001C) | |
133 | /* BE_INT_STATUS - Bus Error Interrupt Status Registers 32bit (R/-) */ | |
134 | #define COH901318_BE_INT_STATUS1 (0x0020) | |
135 | #define COH901318_BE_INT_STATUS2 (0x0024) | |
136 | /* BE_INT_CLEAR - Bus Error Interrupt Clear Registers 32bit (-/W) */ | |
137 | #define COH901318_BE_INT_CLEAR1 (0x0028) | |
138 | #define COH901318_BE_INT_CLEAR2 (0x002C) | |
139 | /* RAW_BE_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */ | |
140 | #define COH901318_RAW_BE_INT_STATUS1 (0x0030) | |
141 | #define COH901318_RAW_BE_INT_STATUS2 (0x0034) | |
142 | ||
143 | /* | |
144 | * CX_CFG - Channel Configuration Registers 32bit (R/W) | |
145 | */ | |
146 | #define COH901318_CX_CFG (0x0100) | |
147 | #define COH901318_CX_CFG_SPACING (0x04) | |
148 | /* Channel enable activates tha dma job */ | |
149 | #define COH901318_CX_CFG_CH_ENABLE (0x00000001) | |
150 | #define COH901318_CX_CFG_CH_DISABLE (0x00000000) | |
151 | /* Request Mode */ | |
152 | #define COH901318_CX_CFG_RM_MASK (0x00000006) | |
153 | #define COH901318_CX_CFG_RM_MEMORY_TO_MEMORY (0x0 << 1) | |
154 | #define COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY (0x1 << 1) | |
155 | #define COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY (0x1 << 1) | |
156 | #define COH901318_CX_CFG_RM_PRIMARY_TO_SECONDARY (0x3 << 1) | |
157 | #define COH901318_CX_CFG_RM_SECONDARY_TO_PRIMARY (0x3 << 1) | |
158 | /* Linked channel request field. RM must == 11 */ | |
159 | #define COH901318_CX_CFG_LCRF_SHIFT 3 | |
160 | #define COH901318_CX_CFG_LCRF_MASK (0x000001F8) | |
161 | #define COH901318_CX_CFG_LCR_DISABLE (0x00000000) | |
162 | /* Terminal Counter Interrupt Request Mask */ | |
163 | #define COH901318_CX_CFG_TC_IRQ_ENABLE (0x00000200) | |
164 | #define COH901318_CX_CFG_TC_IRQ_DISABLE (0x00000000) | |
165 | /* Bus Error interrupt Mask */ | |
166 | #define COH901318_CX_CFG_BE_IRQ_ENABLE (0x00000400) | |
167 | #define COH901318_CX_CFG_BE_IRQ_DISABLE (0x00000000) | |
168 | ||
169 | /* | |
170 | * CX_STAT - Channel Status Registers 32bit (R/-) | |
171 | */ | |
172 | #define COH901318_CX_STAT (0x0200) | |
173 | #define COH901318_CX_STAT_SPACING (0x04) | |
174 | #define COH901318_CX_STAT_RBE_IRQ_IND (0x00000008) | |
175 | #define COH901318_CX_STAT_RTC_IRQ_IND (0x00000004) | |
176 | #define COH901318_CX_STAT_ACTIVE (0x00000002) | |
177 | #define COH901318_CX_STAT_ENABLED (0x00000001) | |
178 | ||
179 | /* | |
180 | * CX_CTRL - Channel Control Registers 32bit (R/W) | |
181 | */ | |
182 | #define COH901318_CX_CTRL (0x0400) | |
183 | #define COH901318_CX_CTRL_SPACING (0x10) | |
184 | /* Transfer Count Enable */ | |
185 | #define COH901318_CX_CTRL_TC_ENABLE (0x00001000) | |
186 | #define COH901318_CX_CTRL_TC_DISABLE (0x00000000) | |
187 | /* Transfer Count Value 0 - 4095 */ | |
188 | #define COH901318_CX_CTRL_TC_VALUE_MASK (0x00000FFF) | |
189 | /* Burst count */ | |
190 | #define COH901318_CX_CTRL_BURST_COUNT_MASK (0x0000E000) | |
191 | #define COH901318_CX_CTRL_BURST_COUNT_64_BYTES (0x7 << 13) | |
192 | #define COH901318_CX_CTRL_BURST_COUNT_48_BYTES (0x6 << 13) | |
193 | #define COH901318_CX_CTRL_BURST_COUNT_32_BYTES (0x5 << 13) | |
194 | #define COH901318_CX_CTRL_BURST_COUNT_16_BYTES (0x4 << 13) | |
195 | #define COH901318_CX_CTRL_BURST_COUNT_8_BYTES (0x3 << 13) | |
196 | #define COH901318_CX_CTRL_BURST_COUNT_4_BYTES (0x2 << 13) | |
197 | #define COH901318_CX_CTRL_BURST_COUNT_2_BYTES (0x1 << 13) | |
198 | #define COH901318_CX_CTRL_BURST_COUNT_1_BYTE (0x0 << 13) | |
199 | /* Source bus size */ | |
200 | #define COH901318_CX_CTRL_SRC_BUS_SIZE_MASK (0x00030000) | |
201 | #define COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS (0x2 << 16) | |
202 | #define COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS (0x1 << 16) | |
203 | #define COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS (0x0 << 16) | |
204 | /* Source address increment */ | |
205 | #define COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE (0x00040000) | |
206 | #define COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE (0x00000000) | |
207 | /* Destination Bus Size */ | |
208 | #define COH901318_CX_CTRL_DST_BUS_SIZE_MASK (0x00180000) | |
209 | #define COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS (0x2 << 19) | |
210 | #define COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS (0x1 << 19) | |
211 | #define COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS (0x0 << 19) | |
212 | /* Destination address increment */ | |
213 | #define COH901318_CX_CTRL_DST_ADDR_INC_ENABLE (0x00200000) | |
214 | #define COH901318_CX_CTRL_DST_ADDR_INC_DISABLE (0x00000000) | |
215 | /* Master Mode (Master2 is only connected to MSL) */ | |
216 | #define COH901318_CX_CTRL_MASTER_MODE_MASK (0x00C00000) | |
217 | #define COH901318_CX_CTRL_MASTER_MODE_M2R_M1W (0x3 << 22) | |
218 | #define COH901318_CX_CTRL_MASTER_MODE_M1R_M2W (0x2 << 22) | |
219 | #define COH901318_CX_CTRL_MASTER_MODE_M2RW (0x1 << 22) | |
220 | #define COH901318_CX_CTRL_MASTER_MODE_M1RW (0x0 << 22) | |
221 | /* Terminal Count flag to PER enable */ | |
222 | #define COH901318_CX_CTRL_TCP_ENABLE (0x01000000) | |
223 | #define COH901318_CX_CTRL_TCP_DISABLE (0x00000000) | |
224 | /* Terminal Count flags to CPU enable */ | |
225 | #define COH901318_CX_CTRL_TC_IRQ_ENABLE (0x02000000) | |
226 | #define COH901318_CX_CTRL_TC_IRQ_DISABLE (0x00000000) | |
227 | /* Hand shake to peripheral */ | |
228 | #define COH901318_CX_CTRL_HSP_ENABLE (0x04000000) | |
229 | #define COH901318_CX_CTRL_HSP_DISABLE (0x00000000) | |
230 | #define COH901318_CX_CTRL_HSS_ENABLE (0x08000000) | |
231 | #define COH901318_CX_CTRL_HSS_DISABLE (0x00000000) | |
232 | /* DMA mode */ | |
233 | #define COH901318_CX_CTRL_DDMA_MASK (0x30000000) | |
234 | #define COH901318_CX_CTRL_DDMA_LEGACY (0x0 << 28) | |
235 | #define COH901318_CX_CTRL_DDMA_DEMAND_DMA1 (0x1 << 28) | |
236 | #define COH901318_CX_CTRL_DDMA_DEMAND_DMA2 (0x2 << 28) | |
237 | /* Primary Request Data Destination */ | |
238 | #define COH901318_CX_CTRL_PRDD_MASK (0x40000000) | |
239 | #define COH901318_CX_CTRL_PRDD_DEST (0x1 << 30) | |
240 | #define COH901318_CX_CTRL_PRDD_SOURCE (0x0 << 30) | |
241 | ||
242 | /* | |
243 | * CX_SRC_ADDR - Channel Source Address Registers 32bit (R/W) | |
244 | */ | |
245 | #define COH901318_CX_SRC_ADDR (0x0404) | |
246 | #define COH901318_CX_SRC_ADDR_SPACING (0x10) | |
247 | ||
248 | /* | |
249 | * CX_DST_ADDR - Channel Destination Address Registers 32bit R/W | |
250 | */ | |
251 | #define COH901318_CX_DST_ADDR (0x0408) | |
252 | #define COH901318_CX_DST_ADDR_SPACING (0x10) | |
253 | ||
254 | /* | |
255 | * CX_LNK_ADDR - Channel Link Address Registers 32bit (R/W) | |
256 | */ | |
257 | #define COH901318_CX_LNK_ADDR (0x040C) | |
258 | #define COH901318_CX_LNK_ADDR_SPACING (0x10) | |
259 | #define COH901318_CX_LNK_LINK_IMMEDIATE (0x00000001) | |
260 | #endif /* COH901318_H */ |