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30#include <common.h>
31#include <console.h>
32#include <exports.h>
33
34DECLARE_GLOBAL_DATA_PTR;
35
36#define STANDALONE
37
38#ifndef STANDALONE
39#include <command.h>
40#include <watchdog.h>
41#else
42#define WATCHDOG_RESET() { \
43 *(ushort *)(CONFIG_SYS_IMMR + 0x1000E) = 0x556c; \
44 *(ushort *)(CONFIG_SYS_IMMR + 0x1000E) = 0xaa39; \
45 }
46#endif
47
48static int debug = 1;
49
50#define DEBUG(fmt, args...) { \
51 if(debug != 0) { \
52 printf("[%s %d %s]: ",__FILE__,__LINE__,__FUNCTION__); \
53 printf(fmt, ##args); \
54 } \
55}
56
57#define CPM_CR_IDMA1_SBLOCK (0x14)
58#define CPM_CR_IDMA2_SBLOCK (0x15)
59#define CPM_CR_IDMA3_SBLOCK (0x16)
60#define CPM_CR_IDMA4_SBLOCK (0x17)
61#define CPM_CR_IDMA1_PAGE (0x07)
62#define CPM_CR_IDMA2_PAGE (0x08)
63#define CPM_CR_IDMA3_PAGE (0x09)
64#define CPM_CR_IDMA4_PAGE (0x0a)
65#define PROFF_IDMA1_BASE ((uint)0x87fe)
66#define PROFF_IDMA2_BASE ((uint)0x88fe)
67#define PROFF_IDMA3_BASE ((uint)0x89fe)
68#define PROFF_IDMA4_BASE ((uint)0x8afe)
69
70#define CPM_CR_INIT_TRX ((ushort)0x0000)
71#define CPM_CR_FLG ((ushort)0x0001)
72
73#define mk_cr_cmd(PG, SBC, MCN, OP) \
74 ((PG << 26) | (SBC << 21) | (MCN << 6) | OP)
75
76
77#pragma pack(1)
78typedef struct ibdbits {
79 unsigned b_valid:1;
80 unsigned b_resv1:1;
81 unsigned b_wrap:1;
82 unsigned b_interrupt:1;
83 unsigned b_last:1;
84 unsigned b_resv2:1;
85 unsigned b_cm:1;
86 unsigned b_resv3:2;
87 unsigned b_sdn:1;
88 unsigned b_ddn:1;
89 unsigned b_dgbl:1;
90 unsigned b_dbo:2;
91 unsigned b_resv4:1;
92 unsigned b_ddtb:1;
93 unsigned b_resv5:2;
94 unsigned b_sgbl:1;
95 unsigned b_sbo:2;
96 unsigned b_resv6:1;
97 unsigned b_sdtb:1;
98 unsigned b_resv7:9;
99} ibdbits_t;
100
101#pragma pack(1)
102typedef union ibdbitsu {
103 ibdbits_t b;
104 uint i;
105} ibdbitsu_t;
106
107#pragma pack(1)
108typedef struct idma_buf_desc {
109 ibdbitsu_t ibd_bits;
110 uint ibd_datlen;
111 uint ibd_sbuf;
112 uint ibd_dbuf;
113} ibd_t;
114
115
116#pragma pack(1)
117typedef struct dcmbits {
118 unsigned b_fb:1;
119 unsigned b_lp:1;
120 unsigned b_resv1:3;
121 unsigned b_tc2:1;
122 unsigned b_resv2:1;
123 unsigned b_wrap:3;
124 unsigned b_sinc:1;
125 unsigned b_dinc:1;
126 unsigned b_erm:1;
127 unsigned b_dt:1;
128 unsigned b_sd:2;
129} dcmbits_t;
130
131#pragma pack(1)
132typedef union dcmbitsu {
133 dcmbits_t b;
134 ushort i;
135} dcmbitsu_t;
136
137#pragma pack(1)
138typedef struct pram_idma {
139 ushort pi_ibase;
140 dcmbitsu_t pi_dcmbits;
141 ushort pi_ibdptr;
142 ushort pi_dprbuf;
143 ushort pi_bufinv;
144 ushort pi_ssmax;
145 ushort pi_dprinptr;
146 ushort pi_sts;
147 ushort pi_dproutptr;
148 ushort pi_seob;
149 ushort pi_deob;
150 ushort pi_dts;
151 ushort pi_retadd;
152 ushort pi_resv1;
153 uint pi_bdcnt;
154 uint pi_sptr;
155 uint pi_dptr;
156 uint pi_istate;
157} pram_idma_t;
158
159
160volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
161volatile ibd_t *bdf;
162volatile pram_idma_t *piptr;
163
164volatile int dmadone;
165volatile int *dmadonep = &dmadone;
166void dmadone_handler (void *);
167
168int idma_init (void);
169void idma_start (int, int, int, uint, uint, int);
170uint dpalloc (uint, uint);
171
172
173uint dpinit_done = 0;
174
175
176#ifdef STANDALONE
177int ctrlc (void)
178{
179 if (tstc()) {
180 switch (getc ()) {
181 case 0x03:
182 return 1;
183 default:
184 break;
185 }
186 }
187 return 0;
188}
189int memcmp(const void * cs,const void * ct,size_t count)
190{
191 const unsigned char *su1, *su2;
192 int res = 0;
193 for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
194 if ((res = *su1 - *su2) != 0)
195 break;
196 return res;
197}
198#endif
199
200#ifdef STANDALONE
201int mem_to_mem_idma2intr (int argc, char * const argv[])
202#else
203int do_idma (bd_t * bd, int argc, char * const argv[])
204#endif
205{
206 int i;
207
208 app_startup(argv);
209 dpinit_done = 0;
210
211 idma_init ();
212
213 DEBUG ("Installing dma handler\n");
214 install_hdlr (7, dmadone_handler, (void *) bdf);
215
216 memset ((void *) 0x100000, 'a', 512);
217 memset ((void *) 0x200000, 'b', 512);
218
219 for (i = 0; i < 32; i++) {
220 printf ("Startin IDMA, iteration=%d\n", i);
221 idma_start (1, 1, 512, 0x100000, 0x200000, 3);
222 }
223
224 DEBUG ("Uninstalling dma handler\n");
225 free_hdlr (7);
226
227 return 0;
228}
229
230void
231idma_start (int sinc, int dinc, int sz, uint sbuf, uint dbuf, int ttype)
232{
233
234
235 piptr->pi_istate = 0;
236 piptr->pi_dcmbits.b.b_resv1 = 0;
237
238 if (sinc == 1)
239 piptr->pi_dcmbits.b.b_sinc = 1;
240 else
241 piptr->pi_dcmbits.b.b_sinc = 0;
242
243 if (dinc == 1)
244 piptr->pi_dcmbits.b.b_dinc = 1;
245 else
246 piptr->pi_dcmbits.b.b_dinc = 0;
247
248 piptr->pi_dcmbits.b.b_erm = 0;
249 piptr->pi_dcmbits.b.b_sd = 0x00;
250
251 bdf->ibd_sbuf = sbuf;
252 bdf->ibd_dbuf = dbuf;
253 bdf->ibd_bits.b.b_cm = 0;
254 bdf->ibd_bits.b.b_interrupt = 1;
255 bdf->ibd_bits.b.b_wrap = 1;
256 bdf->ibd_bits.b.b_last = 1;
257 bdf->ibd_bits.b.b_sdn = 0;
258 bdf->ibd_bits.b.b_ddn = 0;
259 bdf->ibd_bits.b.b_dgbl = 0;
260 bdf->ibd_bits.b.b_ddtb = 0;
261 bdf->ibd_bits.b.b_sgbl = 0;
262 bdf->ibd_bits.b.b_sdtb = 0;
263 bdf->ibd_bits.b.b_dbo = 1;
264 bdf->ibd_bits.b.b_sbo = 1;
265 bdf->ibd_bits.b.b_valid = 1;
266 bdf->ibd_datlen = 512;
267
268 *dmadonep = 0;
269
270 immap->im_sdma.sdma_idmr2 = (uchar) 0xf;
271
272 immap->im_cpm.cp_cpcr = mk_cr_cmd (CPM_CR_IDMA2_PAGE,
273 CPM_CR_IDMA2_SBLOCK, 0x0,
274 0x9) | 0x00010000;
275
276 while (*dmadonep != 1) {
277 if (ctrlc ()) {
278 DEBUG ("\nInterrupted waiting for DMA interrupt.\n");
279 goto done;
280 }
281 printf ("Waiting for DMA interrupt (dmadone=%d b_valid = %d)...\n",
282 dmadone, bdf->ibd_bits.b.b_valid);
283 udelay (1000000);
284 }
285 printf ("DMA complete notification received!\n");
286
287 done:
288 DEBUG ("memcmp(0x%08x, 0x%08x, 512) = %d\n",
289 sbuf, dbuf, memcmp ((void *) sbuf, (void *) dbuf, 512));
290
291 return;
292}
293
294#define MAX_INT_BUFSZ 64
295#define DCM_WRAP 0
296
297int idma_init (void)
298{
299 uint memaddr;
300
301 immap->im_cpm.cp_rccr &= ~0x00F3FFFF;
302 immap->im_cpm.cp_rccr |= 0x00A00A00;
303
304 memaddr = dpalloc (sizeof (pram_idma_t), 64);
305
306 *(volatile u16 *)&immap->im_dprambase16
307 [PROFF_IDMA2_BASE / sizeof(u16)] = memaddr;
308 piptr = (volatile pram_idma_t *) ((uint) (immap) + memaddr);
309
310 piptr->pi_resv1 = 0;
311 piptr->pi_dcmbits.b.b_fb = 0;
312 piptr->pi_dcmbits.b.b_lp = 1;
313 piptr->pi_dcmbits.b.b_erm = 0;
314 piptr->pi_dcmbits.b.b_dt = 0;
315
316 memaddr = (uint) dpalloc (sizeof (ibd_t), 64);
317 piptr->pi_ibase = piptr->pi_ibdptr = (volatile short) memaddr;
318 bdf = (volatile ibd_t *) ((uint) (immap) + memaddr);
319 bdf->ibd_bits.b.b_valid = 0;
320
321 memaddr = (uint) dpalloc (64, 64);
322 piptr->pi_dprbuf = (volatile ushort) memaddr;
323 piptr->pi_dcmbits.b.b_wrap = 4;
324 piptr->pi_ssmax = 32;
325
326 piptr->pi_sts = piptr->pi_ssmax;
327 piptr->pi_dts = piptr->pi_ssmax;
328
329 return 1;
330}
331
332void dmadone_handler (void *arg)
333{
334 immap->im_sdma.sdma_idmr2 = (uchar) 0x0;
335
336 *dmadonep = 1;
337
338 return;
339}
340
341
342static uint dpbase = 0;
343
344uint dpalloc (uint size, uint align)
345{
346 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
347 uint retloc;
348 uint align_mask, off;
349 uint savebase;
350
351
352
353 if (dpinit_done == 0) {
354 dpbase = gd->arch.dp_alloc_base;
355 dpinit_done = 1;
356 }
357
358 align_mask = align - 1;
359 savebase = dpbase;
360
361 if ((off = (dpbase & align_mask)) != 0)
362 dpbase += (align - off);
363
364 if ((off = size & align_mask) != 0)
365 size += align - off;
366
367 if ((dpbase + size) >= gd->arch.dp_alloc_top) {
368 dpbase = savebase;
369 printf ("dpalloc: ran out of dual port ram!");
370 return 0;
371 }
372
373 retloc = dpbase;
374 dpbase += size;
375
376 memset ((void *) &immr->im_dprambase[retloc], 0, size);
377
378 return (retloc);
379}
380
