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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-08-05 11:14:15 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-07 04:55:48 -0400
commita09e64fbc0094e3073dbb09c3b4bfe4ab669244b (patch)
tree69689f467179891b498bd7423fcf61925173db31 /include/asm-arm/arch-s3c2410/dma.h
parenta1b81a84fff05dbfef45b7012c26e1fee9973e5d (diff)
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/arch-s3c2410/dma.h')
-rw-r--r--include/asm-arm/arch-s3c2410/dma.h453
1 files changed, 0 insertions, 453 deletions
diff --git a/include/asm-arm/arch-s3c2410/dma.h b/include/asm-arm/arch-s3c2410/dma.h
deleted file mode 100644
index 86eaa0c2dc1e..000000000000
--- a/include/asm-arm/arch-s3c2410/dma.h
+++ /dev/null
@@ -1,453 +0,0 @@
1/* linux/include/asm-arm/arch-s3c2410/dma.h
2 *
3 * Copyright (C) 2003,2004,2006 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * Samsung S3C241XX DMA support
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11*/
12
13#ifndef __ASM_ARCH_DMA_H
14#define __ASM_ARCH_DMA_H __FILE__
15
16#include <linux/sysdev.h>
17#include <asm/arch/hardware.h>
18
19/*
20 * This is the maximum DMA address(physical address) that can be DMAd to.
21 *
22 */
23#define MAX_DMA_ADDRESS 0x40000000
24#define MAX_DMA_TRANSFER_SIZE 0x100000 /* Data Unit is half word */
25
26/* We use `virtual` dma channels to hide the fact we have only a limited
27 * number of DMA channels, and not of all of them (dependant on the device)
28 * can be attached to any DMA source. We therefore let the DMA core handle
29 * the allocation of hardware channels to clients.
30*/
31
32enum dma_ch {
33 DMACH_XD0,
34 DMACH_XD1,
35 DMACH_SDI,
36 DMACH_SPI0,
37 DMACH_SPI1,
38 DMACH_UART0,
39 DMACH_UART1,
40 DMACH_UART2,
41 DMACH_TIMER,
42 DMACH_I2S_IN,
43 DMACH_I2S_OUT,
44 DMACH_PCM_IN,
45 DMACH_PCM_OUT,
46 DMACH_MIC_IN,
47 DMACH_USB_EP1,
48 DMACH_USB_EP2,
49 DMACH_USB_EP3,
50 DMACH_USB_EP4,
51 DMACH_UART0_SRC2, /* s3c2412 second uart sources */
52 DMACH_UART1_SRC2,
53 DMACH_UART2_SRC2,
54 DMACH_UART3, /* s3c2443 has extra uart */
55 DMACH_UART3_SRC2,
56 DMACH_MAX, /* the end entry */
57};
58
59#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */
60
61/* we have 4 dma channels */
62#ifndef CONFIG_CPU_S3C2443
63#define S3C2410_DMA_CHANNELS (4)
64#else
65#define S3C2410_DMA_CHANNELS (6)
66#endif
67
68/* types */
69
70enum s3c2410_dma_state {
71 S3C2410_DMA_IDLE,
72 S3C2410_DMA_RUNNING,
73 S3C2410_DMA_PAUSED
74};
75
76
77/* enum s3c2410_dma_loadst
78 *
79 * This represents the state of the DMA engine, wrt to the loaded / running
80 * transfers. Since we don't have any way of knowing exactly the state of
81 * the DMA transfers, we need to know the state to make decisions on wether
82 * we can
83 *
84 * S3C2410_DMA_NONE
85 *
86 * There are no buffers loaded (the channel should be inactive)
87 *
88 * S3C2410_DMA_1LOADED
89 *
90 * There is one buffer loaded, however it has not been confirmed to be
91 * loaded by the DMA engine. This may be because the channel is not
92 * yet running, or the DMA driver decided that it was too costly to
93 * sit and wait for it to happen.
94 *
95 * S3C2410_DMA_1RUNNING
96 *
97 * The buffer has been confirmed running, and not finisged
98 *
99 * S3C2410_DMA_1LOADED_1RUNNING
100 *
101 * There is a buffer waiting to be loaded by the DMA engine, and one
102 * currently running.
103*/
104
105enum s3c2410_dma_loadst {
106 S3C2410_DMALOAD_NONE,
107 S3C2410_DMALOAD_1LOADED,
108 S3C2410_DMALOAD_1RUNNING,
109 S3C2410_DMALOAD_1LOADED_1RUNNING,
110};
111
112enum s3c2410_dma_buffresult {
113 S3C2410_RES_OK,
114 S3C2410_RES_ERR,
115 S3C2410_RES_ABORT
116};
117
118enum s3c2410_dmasrc {
119 S3C2410_DMASRC_HW, /* source is memory */
120 S3C2410_DMASRC_MEM /* source is hardware */
121};
122
123/* enum s3c2410_chan_op
124 *
125 * operation codes passed to the DMA code by the user, and also used
126 * to inform the current channel owner of any changes to the system state
127*/
128
129enum s3c2410_chan_op {
130 S3C2410_DMAOP_START,
131 S3C2410_DMAOP_STOP,
132 S3C2410_DMAOP_PAUSE,
133 S3C2410_DMAOP_RESUME,
134 S3C2410_DMAOP_FLUSH,
135 S3C2410_DMAOP_TIMEOUT, /* internal signal to handler */
136 S3C2410_DMAOP_STARTED, /* indicate channel started */
137};
138
139/* flags */
140
141#define S3C2410_DMAF_SLOW (1<<0) /* slow, so don't worry about
142 * waiting for reloads */
143#define S3C2410_DMAF_AUTOSTART (1<<1) /* auto-start if buffer queued */
144
145/* dma buffer */
146
147struct s3c2410_dma_client {
148 char *name;
149};
150
151/* s3c2410_dma_buf_s
152 *
153 * internally used buffer structure to describe a queued or running
154 * buffer.
155*/
156
157struct s3c2410_dma_buf;
158struct s3c2410_dma_buf {
159 struct s3c2410_dma_buf *next;
160 int magic; /* magic */
161 int size; /* buffer size in bytes */
162 dma_addr_t data; /* start of DMA data */
163 dma_addr_t ptr; /* where the DMA got to [1] */
164 void *id; /* client's id */
165};
166
167/* [1] is this updated for both recv/send modes? */
168
169struct s3c2410_dma_chan;
170
171/* s3c2410_dma_cbfn_t
172 *
173 * buffer callback routine type
174*/
175
176typedef void (*s3c2410_dma_cbfn_t)(struct s3c2410_dma_chan *,
177 void *buf, int size,
178 enum s3c2410_dma_buffresult result);
179
180typedef int (*s3c2410_dma_opfn_t)(struct s3c2410_dma_chan *,
181 enum s3c2410_chan_op );
182
183struct s3c2410_dma_stats {
184 unsigned long loads;
185 unsigned long timeout_longest;
186 unsigned long timeout_shortest;
187 unsigned long timeout_avg;
188 unsigned long timeout_failed;
189};
190
191struct s3c2410_dma_map;
192
193/* struct s3c2410_dma_chan
194 *
195 * full state information for each DMA channel
196*/
197
198struct s3c2410_dma_chan {
199 /* channel state flags and information */
200 unsigned char number; /* number of this dma channel */
201 unsigned char in_use; /* channel allocated */
202 unsigned char irq_claimed; /* irq claimed for channel */
203 unsigned char irq_enabled; /* irq enabled for channel */
204 unsigned char xfer_unit; /* size of an transfer */
205
206 /* channel state */
207
208 enum s3c2410_dma_state state;
209 enum s3c2410_dma_loadst load_state;
210 struct s3c2410_dma_client *client;
211
212 /* channel configuration */
213 enum s3c2410_dmasrc source;
214 unsigned long dev_addr;
215 unsigned long load_timeout;
216 unsigned int flags; /* channel flags */
217 unsigned int hw_cfg; /* last hw config */
218
219 struct s3c24xx_dma_map *map; /* channel hw maps */
220
221 /* channel's hardware position and configuration */
222 void __iomem *regs; /* channels registers */
223 void __iomem *addr_reg; /* data address register */
224 unsigned int irq; /* channel irq */
225 unsigned long dcon; /* default value of DCON */
226
227 /* driver handles */
228 s3c2410_dma_cbfn_t callback_fn; /* buffer done callback */
229 s3c2410_dma_opfn_t op_fn; /* channel op callback */
230
231 /* stats gathering */
232 struct s3c2410_dma_stats *stats;
233 struct s3c2410_dma_stats stats_store;
234
235 /* buffer list and information */
236 struct s3c2410_dma_buf *curr; /* current dma buffer */
237 struct s3c2410_dma_buf *next; /* next buffer to load */
238 struct s3c2410_dma_buf *end; /* end of queue */
239
240 /* system device */
241 struct sys_device dev;
242};
243
244/* the currently allocated channel information */
245extern struct s3c2410_dma_chan s3c2410_chans[];
246
247/* note, we don't really use dma_device_t at the moment */
248typedef unsigned long dma_device_t;
249
250/* functions --------------------------------------------------------------- */
251
252/* s3c2410_dma_request
253 *
254 * request a dma channel exclusivley
255*/
256
257extern int s3c2410_dma_request(dmach_t channel,
258 struct s3c2410_dma_client *, void *dev);
259
260
261/* s3c2410_dma_ctrl
262 *
263 * change the state of the dma channel
264*/
265
266extern int s3c2410_dma_ctrl(dmach_t channel, enum s3c2410_chan_op op);
267
268/* s3c2410_dma_setflags
269 *
270 * set the channel's flags to a given state
271*/
272
273extern int s3c2410_dma_setflags(dmach_t channel,
274 unsigned int flags);
275
276/* s3c2410_dma_free
277 *
278 * free the dma channel (will also abort any outstanding operations)
279*/
280
281extern int s3c2410_dma_free(dmach_t channel, struct s3c2410_dma_client *);
282
283/* s3c2410_dma_enqueue
284 *
285 * place the given buffer onto the queue of operations for the channel.
286 * The buffer must be allocated from dma coherent memory, or the Dcache/WB
287 * drained before the buffer is given to the DMA system.
288*/
289
290extern int s3c2410_dma_enqueue(dmach_t channel, void *id,
291 dma_addr_t data, int size);
292
293/* s3c2410_dma_config
294 *
295 * configure the dma channel
296*/
297
298extern int s3c2410_dma_config(dmach_t channel, int xferunit, int dcon);
299
300/* s3c2410_dma_devconfig
301 *
302 * configure the device we're talking to
303*/
304
305extern int s3c2410_dma_devconfig(int channel, enum s3c2410_dmasrc source,
306 int hwcfg, unsigned long devaddr);
307
308/* s3c2410_dma_getposition
309 *
310 * get the position that the dma transfer is currently at
311*/
312
313extern int s3c2410_dma_getposition(dmach_t channel,
314 dma_addr_t *src, dma_addr_t *dest);
315
316extern int s3c2410_dma_set_opfn(dmach_t, s3c2410_dma_opfn_t rtn);
317extern int s3c2410_dma_set_buffdone_fn(dmach_t, s3c2410_dma_cbfn_t rtn);
318
319/* DMA Register definitions */
320
321#define S3C2410_DMA_DISRC (0x00)
322#define S3C2410_DMA_DISRCC (0x04)
323#define S3C2410_DMA_DIDST (0x08)
324#define S3C2410_DMA_DIDSTC (0x0C)
325#define S3C2410_DMA_DCON (0x10)
326#define S3C2410_DMA_DSTAT (0x14)
327#define S3C2410_DMA_DCSRC (0x18)
328#define S3C2410_DMA_DCDST (0x1C)
329#define S3C2410_DMA_DMASKTRIG (0x20)
330#define S3C2412_DMA_DMAREQSEL (0x24)
331#define S3C2443_DMA_DMAREQSEL (0x24)
332
333#define S3C2410_DISRCC_INC (1<<0)
334#define S3C2410_DISRCC_APB (1<<1)
335
336#define S3C2410_DMASKTRIG_STOP (1<<2)
337#define S3C2410_DMASKTRIG_ON (1<<1)
338#define S3C2410_DMASKTRIG_SWTRIG (1<<0)
339
340#define S3C2410_DCON_DEMAND (0<<31)
341#define S3C2410_DCON_HANDSHAKE (1<<31)
342#define S3C2410_DCON_SYNC_PCLK (0<<30)
343#define S3C2410_DCON_SYNC_HCLK (1<<30)
344
345#define S3C2410_DCON_INTREQ (1<<29)
346
347#define S3C2410_DCON_CH0_XDREQ0 (0<<24)
348#define S3C2410_DCON_CH0_UART0 (1<<24)
349#define S3C2410_DCON_CH0_SDI (2<<24)
350#define S3C2410_DCON_CH0_TIMER (3<<24)
351#define S3C2410_DCON_CH0_USBEP1 (4<<24)
352
353#define S3C2410_DCON_CH1_XDREQ1 (0<<24)
354#define S3C2410_DCON_CH1_UART1 (1<<24)
355#define S3C2410_DCON_CH1_I2SSDI (2<<24)
356#define S3C2410_DCON_CH1_SPI (3<<24)
357#define S3C2410_DCON_CH1_USBEP2 (4<<24)
358
359#define S3C2410_DCON_CH2_I2SSDO (0<<24)
360#define S3C2410_DCON_CH2_I2SSDI (1<<24)
361#define S3C2410_DCON_CH2_SDI (2<<24)
362#define S3C2410_DCON_CH2_TIMER (3<<24)
363#define S3C2410_DCON_CH2_USBEP3 (4<<24)
364
365#define S3C2410_DCON_CH3_UART2 (0<<24)
366#define S3C2410_DCON_CH3_SDI (1<<24)
367#define S3C2410_DCON_CH3_SPI (2<<24)
368#define S3C2410_DCON_CH3_TIMER (3<<24)
369#define S3C2410_DCON_CH3_USBEP4 (4<<24)
370
371#define S3C2410_DCON_SRCSHIFT (24)
372#define S3C2410_DCON_SRCMASK (7<<24)
373
374#define S3C2410_DCON_BYTE (0<<20)
375#define S3C2410_DCON_HALFWORD (1<<20)
376#define S3C2410_DCON_WORD (2<<20)
377
378#define S3C2410_DCON_AUTORELOAD (0<<22)
379#define S3C2410_DCON_NORELOAD (1<<22)
380#define S3C2410_DCON_HWTRIG (1<<23)
381
382#ifdef CONFIG_CPU_S3C2440
383#define S3C2440_DIDSTC_CHKINT (1<<2)
384
385#define S3C2440_DCON_CH0_I2SSDO (5<<24)
386#define S3C2440_DCON_CH0_PCMIN (6<<24)
387
388#define S3C2440_DCON_CH1_PCMOUT (5<<24)
389#define S3C2440_DCON_CH1_SDI (6<<24)
390
391#define S3C2440_DCON_CH2_PCMIN (5<<24)
392#define S3C2440_DCON_CH2_MICIN (6<<24)
393
394#define S3C2440_DCON_CH3_MICIN (5<<24)
395#define S3C2440_DCON_CH3_PCMOUT (6<<24)
396#endif
397
398#ifdef CONFIG_CPU_S3C2412
399
400#define S3C2412_DMAREQSEL_SRC(x) ((x)<<1)
401
402#define S3C2412_DMAREQSEL_HW (1)
403
404#define S3C2412_DMAREQSEL_SPI0TX S3C2412_DMAREQSEL_SRC(0)
405#define S3C2412_DMAREQSEL_SPI0RX S3C2412_DMAREQSEL_SRC(1)
406#define S3C2412_DMAREQSEL_SPI1TX S3C2412_DMAREQSEL_SRC(2)
407#define S3C2412_DMAREQSEL_SPI1RX S3C2412_DMAREQSEL_SRC(3)
408#define S3C2412_DMAREQSEL_I2STX S3C2412_DMAREQSEL_SRC(4)
409#define S3C2412_DMAREQSEL_I2SRX S3C2412_DMAREQSEL_SRC(5)
410#define S3C2412_DMAREQSEL_TIMER S3C2412_DMAREQSEL_SRC(9)
411#define S3C2412_DMAREQSEL_SDI S3C2412_DMAREQSEL_SRC(10)
412#define S3C2412_DMAREQSEL_USBEP1 S3C2412_DMAREQSEL_SRC(13)
413#define S3C2412_DMAREQSEL_USBEP2 S3C2412_DMAREQSEL_SRC(14)
414#define S3C2412_DMAREQSEL_USBEP3 S3C2412_DMAREQSEL_SRC(15)
415#define S3C2412_DMAREQSEL_USBEP4 S3C2412_DMAREQSEL_SRC(16)
416#define S3C2412_DMAREQSEL_XDREQ0 S3C2412_DMAREQSEL_SRC(17)
417#define S3C2412_DMAREQSEL_XDREQ1 S3C2412_DMAREQSEL_SRC(18)
418#define S3C2412_DMAREQSEL_UART0_0 S3C2412_DMAREQSEL_SRC(19)
419#define S3C2412_DMAREQSEL_UART0_1 S3C2412_DMAREQSEL_SRC(20)
420#define S3C2412_DMAREQSEL_UART1_0 S3C2412_DMAREQSEL_SRC(21)
421#define S3C2412_DMAREQSEL_UART1_1 S3C2412_DMAREQSEL_SRC(22)
422#define S3C2412_DMAREQSEL_UART2_0 S3C2412_DMAREQSEL_SRC(23)
423#define S3C2412_DMAREQSEL_UART2_1 S3C2412_DMAREQSEL_SRC(24)
424
425#endif
426
427#define S3C2443_DMAREQSEL_SRC(x) ((x)<<1)
428
429#define S3C2443_DMAREQSEL_HW (1)
430
431#define S3C2443_DMAREQSEL_SPI0TX S3C2443_DMAREQSEL_SRC(0)
432#define S3C2443_DMAREQSEL_SPI0RX S3C2443_DMAREQSEL_SRC(1)
433#define S3C2443_DMAREQSEL_SPI1TX S3C2443_DMAREQSEL_SRC(2)
434#define S3C2443_DMAREQSEL_SPI1RX S3C2443_DMAREQSEL_SRC(3)
435#define S3C2443_DMAREQSEL_I2STX S3C2443_DMAREQSEL_SRC(4)
436#define S3C2443_DMAREQSEL_I2SRX S3C2443_DMAREQSEL_SRC(5)
437#define S3C2443_DMAREQSEL_TIMER S3C2443_DMAREQSEL_SRC(9)
438#define S3C2443_DMAREQSEL_SDI S3C2443_DMAREQSEL_SRC(10)
439#define S3C2443_DMAREQSEL_XDREQ0 S3C2443_DMAREQSEL_SRC(17)
440#define S3C2443_DMAREQSEL_XDREQ1 S3C2443_DMAREQSEL_SRC(18)
441#define S3C2443_DMAREQSEL_UART0_0 S3C2443_DMAREQSEL_SRC(19)
442#define S3C2443_DMAREQSEL_UART0_1 S3C2443_DMAREQSEL_SRC(20)
443#define S3C2443_DMAREQSEL_UART1_0 S3C2443_DMAREQSEL_SRC(21)
444#define S3C2443_DMAREQSEL_UART1_1 S3C2443_DMAREQSEL_SRC(22)
445#define S3C2443_DMAREQSEL_UART2_0 S3C2443_DMAREQSEL_SRC(23)
446#define S3C2443_DMAREQSEL_UART2_1 S3C2443_DMAREQSEL_SRC(24)
447#define S3C2443_DMAREQSEL_UART3_0 S3C2443_DMAREQSEL_SRC(25)
448#define S3C2443_DMAREQSEL_UART3_1 S3C2443_DMAREQSEL_SRC(26)
449#define S3C2443_DMAREQSEL_PCMOUT S3C2443_DMAREQSEL_SRC(27)
450#define S3C2443_DMAREQSEL_PCMIN S3C2443_DMAREQSEL_SRC(28)
451#define S3C2443_DMAREQSEL_MICIN S3C2443_DMAREQSEL_SRC(29)
452
453#endif /* __ASM_ARCH_DMA_H */
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