blob: 290081620b3e1af334e114e48728c10340327943 [file] [log] [blame]
Russell King7bedaa52012-04-13 12:10:24 +01001#ifndef __LINUX_OMAP_DMA_H
2#define __LINUX_OMAP_DMA_H
Balaji T Kee526d52014-05-09 22:16:53 +05303#include <linux/omap-dmaengine.h>
Russell King7bedaa52012-04-13 12:10:24 +01004
Tony Lindgren45c3eb72012-11-30 08:41:50 -08005/*
6 * Legacy OMAP DMA handling defines and functions
7 *
8 * NOTE: Do not use these any longer.
9 *
10 * Use the generic dmaengine functions as defined in
11 * include/linux/dmaengine.h.
12 *
13 * Copyright (C) 2003 Nokia Corporation
14 * Author: Juha Yrjölä <juha.yrjola@nokia.com>
15 *
16 */
17
18#include <linux/platform_device.h>
19
Aaro Koskinen1bd5dfe2015-10-26 20:23:53 +020020#define INT_DMA_LCD (NR_IRQS_LEGACY + 25)
Tony Lindgren45c3eb72012-11-30 08:41:50 -080021
22#define OMAP1_DMA_TOUT_IRQ (1 << 0)
23#define OMAP_DMA_DROP_IRQ (1 << 1)
24#define OMAP_DMA_HALF_IRQ (1 << 2)
25#define OMAP_DMA_FRAME_IRQ (1 << 3)
26#define OMAP_DMA_LAST_IRQ (1 << 4)
27#define OMAP_DMA_BLOCK_IRQ (1 << 5)
28#define OMAP1_DMA_SYNC_IRQ (1 << 6)
29#define OMAP2_DMA_PKT_IRQ (1 << 7)
30#define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8)
31#define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9)
32#define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10)
33#define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11)
34
35#define OMAP_DMA_CCR_EN (1 << 7)
36#define OMAP_DMA_CCR_RD_ACTIVE (1 << 9)
37#define OMAP_DMA_CCR_WR_ACTIVE (1 << 10)
38#define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24)
39#define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25)
40
41#define OMAP_DMA_DATA_TYPE_S8 0x00
42#define OMAP_DMA_DATA_TYPE_S16 0x01
43#define OMAP_DMA_DATA_TYPE_S32 0x02
44
45#define OMAP_DMA_SYNC_ELEMENT 0x00
46#define OMAP_DMA_SYNC_FRAME 0x01
47#define OMAP_DMA_SYNC_BLOCK 0x02
48#define OMAP_DMA_SYNC_PACKET 0x03
49
50#define OMAP_DMA_DST_SYNC_PREFETCH 0x02
51#define OMAP_DMA_SRC_SYNC 0x01
52#define OMAP_DMA_DST_SYNC 0x00
53
54#define OMAP_DMA_PORT_EMIFF 0x00
55#define OMAP_DMA_PORT_EMIFS 0x01
56#define OMAP_DMA_PORT_OCP_T1 0x02
57#define OMAP_DMA_PORT_TIPB 0x03
58#define OMAP_DMA_PORT_OCP_T2 0x04
59#define OMAP_DMA_PORT_MPUI 0x05
60
61#define OMAP_DMA_AMODE_CONSTANT 0x00
62#define OMAP_DMA_AMODE_POST_INC 0x01
63#define OMAP_DMA_AMODE_SINGLE_IDX 0x02
64#define OMAP_DMA_AMODE_DOUBLE_IDX 0x03
65
66#define DMA_DEFAULT_FIFO_DEPTH 0x10
67#define DMA_DEFAULT_ARB_RATE 0x01
68/* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */
69#define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */
70#define DMA_THREAD_RESERVE_ONET (0x01 << 12)
71#define DMA_THREAD_RESERVE_TWOT (0x02 << 12)
72#define DMA_THREAD_RESERVE_THREET (0x03 << 12)
73#define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */
74#define DMA_THREAD_FIFO_75 (0x01 << 14)
75#define DMA_THREAD_FIFO_25 (0x02 << 14)
76#define DMA_THREAD_FIFO_50 (0x03 << 14)
77
78/* DMA4_OCP_SYSCONFIG bits */
79#define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12)
80#define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8)
81#define DMA_SYSCONFIG_EMUFREE (1 << 5)
82#define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3)
83#define DMA_SYSCONFIG_SOFTRESET (1 << 2)
84#define DMA_SYSCONFIG_AUTOIDLE (1 << 0)
85
86#define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12)
87#define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3)
88
89#define DMA_IDLEMODE_SMARTIDLE 0x2
90#define DMA_IDLEMODE_NO_IDLE 0x1
91#define DMA_IDLEMODE_FORCE_IDLE 0x0
92
93/* Chaining modes*/
94#ifndef CONFIG_ARCH_OMAP1
95#define OMAP_DMA_STATIC_CHAIN 0x1
96#define OMAP_DMA_DYNAMIC_CHAIN 0x2
97#define OMAP_DMA_CHAIN_ACTIVE 0x1
98#define OMAP_DMA_CHAIN_INACTIVE 0x0
Russell King7bedaa52012-04-13 12:10:24 +010099#endif
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800100
101#define DMA_CH_PRIO_HIGH 0x1
102#define DMA_CH_PRIO_LOW 0x0 /* Def */
103
104/* Errata handling */
105#define IS_DMA_ERRATA(id) (errata & (id))
106#define SET_DMA_ERRATA(id) (errata |= (id))
107
108#define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0)
109#define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1)
110#define DMA_ERRATA_i378 BIT(0x2)
111#define DMA_ERRATA_i541 BIT(0x3)
112#define DMA_ERRATA_i88 BIT(0x4)
113#define DMA_ERRATA_3_3 BIT(0x5)
114#define DMA_ROMCODE_BUG BIT(0x6)
115
116/* Attributes for OMAP DMA Contrller */
117#define DMA_LINKED_LCH BIT(0x0)
118#define GLOBAL_PRIORITY BIT(0x1)
119#define RESERVE_CHANNEL BIT(0x2)
120#define IS_CSSA_32 BIT(0x3)
121#define IS_CDSA_32 BIT(0x4)
122#define IS_RW_PRIORITY BIT(0x5)
123#define ENABLE_1510_MODE BIT(0x6)
124#define SRC_PORT BIT(0x7)
125#define DST_PORT BIT(0x8)
126#define SRC_INDEX BIT(0x9)
127#define DST_INDEX BIT(0xa)
128#define IS_BURST_ONLY4 BIT(0xb)
129#define CLEAR_CSR_ON_READ BIT(0xc)
130#define IS_WORD_16 BIT(0xd)
131#define ENABLE_16XX_MODE BIT(0xe)
132#define HS_CHANNELS_RESERVED BIT(0xf)
Nishanth Menon76be4a52014-06-12 17:15:22 +0530133#define DMA_ENGINE_HANDLE_IRQ BIT(0x10)
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800134
135/* Defines for DMA Capabilities */
136#define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18)
137#define DMA_HAS_CONSTANT_FILL_CAPS (0x1 << 19)
138#define DMA_HAS_DESCRIPTOR_CAPS (0x3 << 20)
139
140enum omap_reg_offsets {
141
142GCR, GSCR, GRST1, HW_ID,
143PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID,
144PCHD_ID, CAPS_0, CAPS_1, CAPS_2,
145CAPS_3, CAPS_4, PCH2_SR, PCH0_SR,
146PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0,
147IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0,
148IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS,
149OCP_SYSCONFIG,
150
151/* omap1+ specific */
152CPC, CCR2, LCH_CTRL,
153
154/* Common registers for all omap's */
155CSDP, CCR, CICR, CSR,
156CEN, CFN, CSFI, CSEI,
157CSAC, CDAC, CDEI,
158CDFI, CLNK_CTRL,
159
160/* Channel specific registers */
161CSSA, CDSA, COLOR,
162CCEN, CCFN,
163
164/* omap3630 and omap4 specific */
165CDP, CNDP, CCDN,
166
167};
168
169enum omap_dma_burst_mode {
170 OMAP_DMA_DATA_BURST_DIS = 0,
171 OMAP_DMA_DATA_BURST_4,
172 OMAP_DMA_DATA_BURST_8,
173 OMAP_DMA_DATA_BURST_16,
174};
175
176enum end_type {
177 OMAP_DMA_LITTLE_ENDIAN = 0,
178 OMAP_DMA_BIG_ENDIAN
179};
180
181enum omap_dma_color_mode {
182 OMAP_DMA_COLOR_DIS = 0,
183 OMAP_DMA_CONSTANT_FILL,
184 OMAP_DMA_TRANSPARENT_COPY
185};
186
187enum omap_dma_write_mode {
188 OMAP_DMA_WRITE_NON_POSTED = 0,
189 OMAP_DMA_WRITE_POSTED,
190 OMAP_DMA_WRITE_LAST_NON_POSTED
191};
192
193enum omap_dma_channel_mode {
194 OMAP_DMA_LCH_2D = 0,
195 OMAP_DMA_LCH_G,
196 OMAP_DMA_LCH_P,
197 OMAP_DMA_LCH_PD
198};
199
200struct omap_dma_channel_params {
201 int data_type; /* data type 8,16,32 */
202 int elem_count; /* number of elements in a frame */
203 int frame_count; /* number of frames in a element */
204
205 int src_port; /* Only on OMAP1 REVISIT: Is this needed? */
206 int src_amode; /* constant, post increment, indexed,
207 double indexed */
208 unsigned long src_start; /* source address : physical */
209 int src_ei; /* source element index */
210 int src_fi; /* source frame index */
211
212 int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */
213 int dst_amode; /* constant, post increment, indexed,
214 double indexed */
215 unsigned long dst_start; /* source address : physical */
216 int dst_ei; /* source element index */
217 int dst_fi; /* source frame index */
218
219 int trigger; /* trigger attached if the channel is
220 synchronized */
221 int sync_mode; /* sycn on element, frame , block or packet */
222 int src_or_dst_synch; /* source synch(1) or destination synch(0) */
223
224 int ie; /* interrupt enabled */
225
226 unsigned char read_prio;/* read priority */
227 unsigned char write_prio;/* write priority */
228
229#ifndef CONFIG_ARCH_OMAP1
230 enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */
231#endif
232};
233
234struct omap_dma_lch {
235 int next_lch;
236 int dev_id;
237 u16 saved_csr;
238 u16 enabled_irqs;
239 const char *dev_name;
240 void (*callback)(int lch, u16 ch_status, void *data);
241 void *data;
242 long flags;
243 /* required for Dynamic chaining */
244 int prev_linked_ch;
245 int next_linked_ch;
246 int state;
247 int chain_id;
248 int status;
249};
250
251struct omap_dma_dev_attr {
252 u32 dev_caps;
253 u16 lch_count;
254 u16 chan_count;
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800255};
256
Russell King64a2dc32013-11-08 18:04:06 +0000257enum {
258 OMAP_DMA_REG_NONE,
259 OMAP_DMA_REG_16BIT,
260 OMAP_DMA_REG_2X16BIT,
261 OMAP_DMA_REG_32BIT,
262};
263
264struct omap_dma_reg {
265 u16 offset;
266 u8 stride;
267 u8 type;
268};
269
Peter Ujfalusi020c62a2015-12-14 22:47:42 +0200270#define SDMA_FILTER_PARAM(hw_req) ((int[]) { (hw_req) })
271struct dma_slave_map;
272
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800273/* System DMA platform data structure */
274struct omap_system_dma_plat_info {
Russell King596c4712013-12-10 11:08:01 +0000275 const struct omap_dma_reg *reg_map;
276 unsigned channel_stride;
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800277 struct omap_dma_dev_attr *dma_attr;
278 u32 errata;
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800279 void (*show_dma_caps)(void);
280 void (*clear_lch_regs)(int lch);
281 void (*clear_dma)(int lch);
282 void (*dma_write)(u32 val, int reg, int lch);
283 u32 (*dma_read)(int reg, int lch);
Peter Ujfalusi020c62a2015-12-14 22:47:42 +0200284
285 const struct dma_slave_map *slave_map;
286 int slavecnt;
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800287};
288
289#ifdef CONFIG_ARCH_OMAP2PLUS
290#define dma_omap2plus() 1
291#else
292#define dma_omap2plus() 0
293#endif
294#define dma_omap1() (!dma_omap2plus())
Russell Kingb9e97822013-11-02 13:26:57 +0000295#define __dma_omap15xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_1510_MODE)
296#define __dma_omap16xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_16XX_MODE)
297#define dma_omap15xx() __dma_omap15xx(d)
298#define dma_omap16xx() __dma_omap16xx(d)
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800299
Peter Ujfalusia8db1152016-09-21 15:41:30 +0300300#if defined(CONFIG_ARCH_OMAP)
Russell King1b416c42013-11-02 13:00:03 +0000301extern struct omap_system_dma_plat_info *omap_get_plat_info(void);
302
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800303extern void omap_set_dma_priority(int lch, int dst_port, int priority);
304extern int omap_request_dma(int dev_id, const char *dev_name,
305 void (*callback)(int lch, u16 ch_status, void *data),
306 void *data, int *dma_ch);
307extern void omap_enable_dma_irq(int ch, u16 irq_bits);
308extern void omap_disable_dma_irq(int ch, u16 irq_bits);
309extern void omap_free_dma(int ch);
310extern void omap_start_dma(int lch);
311extern void omap_stop_dma(int lch);
312extern void omap_set_dma_transfer_params(int lch, int data_type,
313 int elem_count, int frame_count,
314 int sync_mode,
315 int dma_trigger, int src_or_dst_synch);
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800316extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
317extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);
318
319extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
320 unsigned long src_start,
321 int src_ei, int src_fi);
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800322extern void omap_set_dma_src_data_pack(int lch, int enable);
323extern void omap_set_dma_src_burst_mode(int lch,
324 enum omap_dma_burst_mode burst_mode);
325
326extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
327 unsigned long dest_start,
328 int dst_ei, int dst_fi);
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800329extern void omap_set_dma_dest_data_pack(int lch, int enable);
330extern void omap_set_dma_dest_burst_mode(int lch,
331 enum omap_dma_burst_mode burst_mode);
332
333extern void omap_set_dma_params(int lch,
334 struct omap_dma_channel_params *params);
335
336extern void omap_dma_link_lch(int lch_head, int lch_queue);
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800337
338extern int omap_set_dma_callback(int lch,
339 void (*callback)(int lch, u16 ch_status, void *data),
340 void *data);
341extern dma_addr_t omap_get_dma_src_pos(int lch);
342extern dma_addr_t omap_get_dma_dst_pos(int lch);
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800343extern int omap_get_dma_active_status(int lch);
344extern int omap_dma_running(void);
345extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
346 int tparams);
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800347void omap_dma_global_context_save(void);
348void omap_dma_global_context_restore(void);
349
Arnd Bergmann81c44c22014-04-24 13:28:20 +0100350#if defined(CONFIG_ARCH_OMAP1) && IS_ENABLED(CONFIG_FB_OMAP)
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800351#include <mach/lcd_dma.h>
352#else
353static inline int omap_lcd_dma_running(void)
354{
355 return 0;
356}
357#endif
358
Peter Ujfalusia8db1152016-09-21 15:41:30 +0300359#else /* CONFIG_ARCH_OMAP */
360
361static inline struct omap_system_dma_plat_info *omap_get_plat_info(void)
362{
363 return NULL;
364}
365
366static inline int omap_request_dma(int dev_id, const char *dev_name,
367 void (*callback)(int lch, u16 ch_status, void *data),
368 void *data, int *dma_ch)
369{
370 return -ENODEV;
371}
372
373static inline void omap_free_dma(int ch) { }
374
375#endif /* CONFIG_ARCH_OMAP */
376
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800377#endif /* __LINUX_OMAP_DMA_H */