~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~ [ freetext search ] ~ [ file search ] ~

Linux Cross Reference
Linux/drivers/ide/aec62xx.c

Version: ~ [ 2.2.5 ] ~ [ 2.4.1 ] ~ [ 2.4.9 ] ~ [ 2.6.17.10 ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * linux/drivers/ide/aec62xx.c          Version 0.09    June. 9, 2000
  3  *
  4  * Copyright (C) 1999-2000      Andre Hedrick (andre@linux-ide.org)
  5  * May be copied or modified under the terms of the GNU General Public License
  6  *
  7  */
  8 
  9 #include <linux/config.h>
 10 #include <linux/types.h>
 11 #include <linux/kernel.h>
 12 #include <linux/delay.h>
 13 #include <linux/timer.h>
 14 #include <linux/mm.h>
 15 #include <linux/ioport.h>
 16 #include <linux/blkdev.h>
 17 #include <linux/hdreg.h>
 18 
 19 #include <linux/interrupt.h>
 20 #include <linux/pci.h>
 21 #include <linux/init.h>
 22 #include <linux/ide.h>
 23 
 24 #include <asm/io.h>
 25 #include <asm/irq.h>
 26 
 27 #include "ide_modes.h"
 28 
 29 #define DISPLAY_AEC62XX_TIMINGS
 30 
 31 #ifndef HIGH_4
 32 #define HIGH_4(H)               ((H)=(H>>4))
 33 #endif
 34 #ifndef LOW_4
 35 #define LOW_4(L)                ((L)=(L-((L>>4)<<4)))
 36 #endif
 37 #ifndef SPLIT_BYTE
 38 #define SPLIT_BYTE(B,H,L)       ((H)=(B>>4), (L)=(B-((B>>4)<<4)))
 39 #endif
 40 #ifndef MAKE_WORD
 41 #define MAKE_WORD(W,HB,LB)      ((W)=((HB<<8)+LB))
 42 #endif
 43 
 44 
 45 #if defined(DISPLAY_AEC62XX_TIMINGS) && defined(CONFIG_PROC_FS)
 46 #include <linux/stat.h>
 47 #include <linux/proc_fs.h>
 48 
 49 static int aec62xx_get_info(char *, char **, off_t, int);
 50 extern int (*aec62xx_display_info)(char *, char **, off_t, int); /* ide-proc.c */
 51 extern char *ide_media_verbose(ide_drive_t *);
 52 static struct pci_dev *bmide_dev;
 53 
 54 static int aec62xx_get_info (char *buffer, char **addr, off_t offset, int count)
 55 {
 56         char *p = buffer;
 57 
 58         u32 bibma = pci_resource_start(bmide_dev, 4);
 59         u8 c0 = 0, c1 = 0;
 60         u8 art = 0, uart = 0;
 61 
 62         switch(bmide_dev->device) {
 63                 case PCI_DEVICE_ID_ARTOP_ATP850UF:
 64                         p += sprintf(p, "\n                                AEC6210 Chipset.\n");
 65                         break;
 66                 case PCI_DEVICE_ID_ARTOP_ATP860:
 67                         p += sprintf(p, "\n                                AEC6260 No Bios Chipset.\n");
 68                         break;
 69                 case PCI_DEVICE_ID_ARTOP_ATP860R:
 70                         p += sprintf(p, "\n                                AEC6260 Chipset.\n");
 71                         break;
 72                 default:
 73                         p += sprintf(p, "\n                                AEC62?? Chipset.\n");
 74                         break;
 75         }
 76 
 77         /*
 78          * at that point bibma+0x2 et bibma+0xa are byte registers
 79          * to investigate:
 80          */
 81         c0 = inb_p((unsigned short)bibma + 0x02);
 82         c1 = inb_p((unsigned short)bibma + 0x0a);
 83 
 84         p += sprintf(p, "--------------- Primary Channel ---------------- Secondary Channel -------------\n");
 85         (void) pci_read_config_byte(bmide_dev, 0x4a, &art);
 86         p += sprintf(p, "                %sabled                         %sabled\n",
 87                 (art&0x02)?" en":"dis",(art&0x04)?" en":"dis");
 88         p += sprintf(p, "--------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------\n");
 89         p += sprintf(p, "DMA enabled:    %s              %s             %s               %s\n",
 90                 (c0&0x20)?"yes":"no ",(c0&0x40)?"yes":"no ",(c1&0x20)?"yes":"no ",(c1&0x40)?"yes":"no ");
 91 
 92         switch(bmide_dev->device) {
 93                 case PCI_DEVICE_ID_ARTOP_ATP850UF:
 94                         (void) pci_read_config_byte(bmide_dev, 0x54, &art);
 95                         p += sprintf(p, "DMA Mode:       %s(%s)          %s(%s)         %s(%s)           %s(%s)\n",
 96                                 (c0&0x20)?((art&0x03)?"UDMA":" DMA"):" PIO",
 97                                 (art&0x02)?"2":(art&0x01)?"1":"",
 98                                 (c0&0x40)?((art&0x0c)?"UDMA":" DMA"):" PIO",
 99                                 (art&0x08)?"2":(art&0x04)?"1":"",
100                                 (c1&0x20)?((art&0x30)?"UDMA":" DMA"):" PIO",
101                                 (art&0x20)?"2":(art&0x10)?"1":"",
102                                 (c1&0x40)?((art&0xc0)?"UDMA":" DMA"):" PIO",
103                                 (art&0x80)?"2":(art&0x40)?"1":"");
104                         (void) pci_read_config_byte(bmide_dev, 0x40, &art);
105                         p += sprintf(p, "Active:         0x%02x", art);
106                         (void) pci_read_config_byte(bmide_dev, 0x42, &art);
107                         p += sprintf(p, "             0x%02x", art);
108                         (void) pci_read_config_byte(bmide_dev, 0x44, &art);
109                         p += sprintf(p, "            0x%02x", art);
110                         (void) pci_read_config_byte(bmide_dev, 0x46, &art);
111                         p += sprintf(p, "              0x%02x\n", art);
112                         (void) pci_read_config_byte(bmide_dev, 0x41, &art);
113                         p += sprintf(p, "Recovery:       0x%02x", art);
114                         (void) pci_read_config_byte(bmide_dev, 0x43, &art);
115                         p += sprintf(p, "             0x%02x", art);
116                         (void) pci_read_config_byte(bmide_dev, 0x45, &art);
117                         p += sprintf(p, "            0x%02x", art);
118                         (void) pci_read_config_byte(bmide_dev, 0x47, &art);
119                         p += sprintf(p, "              0x%02x\n", art);
120                         break;
121                 case PCI_DEVICE_ID_ARTOP_ATP860:
122                 case PCI_DEVICE_ID_ARTOP_ATP860R:
123                         (void) pci_read_config_byte(bmide_dev, 0x44, &art);
124                         p += sprintf(p, "DMA Mode:       %s(%s)          %s(%s)",
125                                 (c0&0x20)?((art&0x07)?"UDMA":" DMA"):" PIO",
126                                 ((art&0x06)==0x06)?"4":((art&0x05)==0x05)?"4":((art&0x04)==0x04)?"3":((art&0x03)==0x03)?"2":((art&0x02)==0x02)?"1":((art&0x01)==0x01)?"":"?",
127                                 (c0&0x40)?((art&0x70)?"UDMA":" DMA"):" PIO",
128                                 ((art&0x60)==0x60)?"4":((art&0x50)==0x50)?"4":((art&0x40)==0x40)?"3":((art&0x30)==0x30)?"2":((art&0x20)==0x20)?"1":((art&0x10)==0x10)?"":"?");
129                         (void) pci_read_config_byte(bmide_dev, 0x45, &art);
130                         p += sprintf(p, "         %s(%s)           %s(%s)\n",
131                                 (c1&0x20)?((art&0x07)?"UDMA":" DMA"):" PIO",
132                                 ((art&0x06)==0x06)?"4":((art&0x05)==0x05)?"4":((art&0x04)==0x04)?"3":((art&0x03)==0x03)?"2":((art&0x02)==0x02)?"1":((art&0x01)==0x01)?"":"?",
133                                 (c1&0x40)?((art&0x70)?"UDMA":" DMA"):" PIO",
134                                 ((art&0x60)==0x60)?"4":((art&0x50)==0x50)?"4":((art&0x40)==0x40)?"3":((art&0x30)==0x30)?"2":((art&0x20)==0x20)?"1":((art&0x10)==0x10)?"":"?");
135                         (void) pci_read_config_byte(bmide_dev, 0x40, &art);
136                         p += sprintf(p, "Active:         0x%02x", HIGH_4(art));
137                         (void) pci_read_config_byte(bmide_dev, 0x41, &art);
138                         p += sprintf(p, "             0x%02x", HIGH_4(art));
139                         (void) pci_read_config_byte(bmide_dev, 0x42, &art);
140                         p += sprintf(p, "            0x%02x", HIGH_4(art));
141                         (void) pci_read_config_byte(bmide_dev, 0x43, &art);
142                         p += sprintf(p, "              0x%02x\n", HIGH_4(art));
143                         (void) pci_read_config_byte(bmide_dev, 0x40, &art);
144                         p += sprintf(p, "Recovery:       0x%02x", LOW_4(art));
145                         (void) pci_read_config_byte(bmide_dev, 0x41, &art);
146                         p += sprintf(p, "             0x%02x", LOW_4(art));
147                         (void) pci_read_config_byte(bmide_dev, 0x42, &art);
148                         p += sprintf(p, "            0x%02x", LOW_4(art));
149                         (void) pci_read_config_byte(bmide_dev, 0x43, &art);
150                         p += sprintf(p, "              0x%02x\n", LOW_4(art));
151                         (void) pci_read_config_byte(bmide_dev, 0x49, &uart);
152                         p += sprintf(p, "reg49h = 0x%02x ", uart);
153                         (void) pci_read_config_byte(bmide_dev, 0x4a, &uart);
154                         p += sprintf(p, "reg4ah = 0x%02x\n", uart);
155                         break;
156                 default:
157                         break;
158         }
159 
160         return p-buffer;/* => must be less than 4k! */
161 }
162 #endif  /* defined(DISPLAY_AEC62xx_TIMINGS) && defined(CONFIG_PROC_FS) */
163 
164 byte aec62xx_proc = 0;
165 
166 #ifdef CONFIG_AEC62XX_TUNING
167 
168 struct chipset_bus_clock_list_entry {
169         byte            xfer_speed;
170 
171         byte            chipset_settings_34;
172         byte            ultra_settings_34;
173 
174         byte            chipset_settings_33;
175         byte            ultra_settings_33;
176 };
177 
178 struct chipset_bus_clock_list_entry aec62xx_base [] = {
179 #ifdef CONFIG_BLK_DEV_IDEDMA
180         {       XFER_UDMA_4,    0x41,   0x04,   0x31,   0x05    },
181         {       XFER_UDMA_3,    0x41,   0x03,   0x31,   0x04    },
182         {       XFER_UDMA_2,    0x41,   0x02,   0x31,   0x03    },
183         {       XFER_UDMA_1,    0x41,   0x01,   0x31,   0x02    },
184         {       XFER_UDMA_0,    0x41,   0x01,   0x31,   0x01    },
185 
186         {       XFER_MW_DMA_2,  0x41,   0x00,   0x31,   0x00    },
187         {       XFER_MW_DMA_1,  0x42,   0x00,   0x31,   0x00    },
188         {       XFER_MW_DMA_0,  0x7a,   0x00,   0x0a,   0x00    },
189 #endif /* CONFIG_BLK_DEV_IDEDMA */
190         {       XFER_PIO_4,     0x41,   0x00,   0x31,   0x00    },
191         {       XFER_PIO_3,     0x43,   0x00,   0x33,   0x00    },
192         {       XFER_PIO_2,     0x78,   0x00,   0x08,   0x00    },
193         {       XFER_PIO_1,     0x7a,   0x00,   0x0a,   0x00    },
194         {       XFER_PIO_0,     0x70,   0x00,   0x00,   0x00    },
195         {       0,              0x00,   0x00,   0x00,   0x00    }
196 };
197 
198 extern char *ide_xfer_verbose (byte xfer_rate);
199 
200 /*
201  * TO DO: active tuning and correction of cards without a bios.
202  */
203 
204 static byte pci_bus_clock_list (byte speed, struct chipset_bus_clock_list_entry * chipset_table)
205 {
206         int bus_speed = system_bus_clock();
207 
208         for ( ; chipset_table->xfer_speed ; chipset_table++)
209                 if (chipset_table->xfer_speed == speed) {
210                         return ((byte) ((bus_speed <= 33) ? chipset_table->chipset_settings_33 : chipset_table->chipset_settings_34));
211                 }
212         return 0x00;
213 }
214 
215 static byte pci_bus_clock_list_ultra (byte speed, struct chipset_bus_clock_list_entry * chipset_table)
216 {
217         int bus_speed = system_bus_clock();
218 
219         for ( ; chipset_table->xfer_speed ; chipset_table++)
220                 if (chipset_table->xfer_speed == speed) {
221                         return ((byte) ((bus_speed <= 33) ? chipset_table->ultra_settings_33 : chipset_table->ultra_settings_34));
222                 }
223         return 0x00;
224 }
225 
226 static int aec6210_tune_chipset (ide_drive_t *drive, byte speed)
227 {
228         ide_hwif_t *hwif        = HWIF(drive);
229         struct pci_dev *dev     = hwif->pci_dev;
230         int err                 = 0;
231         unsigned short d_conf   = 0x0000;
232         byte ultra              = 0x00;
233         byte ultra_conf         = 0x00;
234         byte tmp0               = 0x00;
235         byte tmp1               = 0x00;
236         byte tmp2               = 0x00;
237         unsigned long flags;
238 
239         __save_flags(flags);    /* local CPU only */
240         __cli();                /* local CPU only */
241 
242         pci_read_config_word(dev, 0x40|(2*drive->dn), &d_conf);
243         tmp0 = pci_bus_clock_list(speed, aec62xx_base);
244         SPLIT_BYTE(tmp0,tmp1,tmp2);
245         MAKE_WORD(d_conf,tmp1,tmp2);
246         pci_write_config_word(dev, 0x40|(2*drive->dn), d_conf);
247 
248         tmp1 = 0x00;
249         tmp2 = 0x00;
250         pci_read_config_byte(dev, 0x54, &ultra);
251         tmp1 = ((0x00 << (2*drive->dn)) | (ultra & ~(3 << (2*drive->dn))));
252         ultra_conf = pci_bus_clock_list_ultra(speed, aec62xx_base);
253         tmp2 = ((ultra_conf << (2*drive->dn)) | (tmp1 & ~(3 << (2*drive->dn))));
254         pci_write_config_byte(dev, 0x54, tmp2);
255 
256         __restore_flags(flags); /* local CPU only */
257 
258         err = ide_config_drive_speed(drive, speed);
259         return(err);
260 }
261 
262 static int aec6260_tune_chipset (ide_drive_t *drive, byte speed)
263 {
264         ide_hwif_t *hwif        = HWIF(drive);
265         struct pci_dev *dev     = hwif->pci_dev;
266         byte unit               = (drive->select.b.unit & 0x01);
267         byte ultra_pci          = hwif->channel ? 0x45 : 0x44;
268         int err                 = 0;
269         byte drive_conf         = 0x00;
270         byte ultra_conf         = 0x00;
271         byte ultra              = 0x00;
272         byte tmp1               = 0x00;
273         byte tmp2               = 0x00;
274         unsigned long flags;
275 
276         __save_flags(flags);    /* local CPU only */
277         __cli();                /* local CPU only */
278 
279         pci_read_config_byte(dev, 0x40|drive->dn, &drive_conf);
280         drive_conf = pci_bus_clock_list(speed, aec62xx_base);
281         pci_write_config_byte(dev, 0x40|drive->dn, drive_conf);
282 
283         pci_read_config_byte(dev, ultra_pci, &ultra);
284         tmp1 = ((0x00 << (4*unit)) | (ultra & ~(7 << (4*unit))));
285         ultra_conf = pci_bus_clock_list_ultra(speed, aec62xx_base);
286         tmp2 = ((ultra_conf << (4*unit)) | (tmp1 & ~(7 << (4*unit))));
287         pci_write_config_byte(dev, ultra_pci, tmp2);
288         __restore_flags(flags); /* local CPU only */
289 
290         if (!drive->init_speed)
291                 drive->init_speed = speed;
292 
293         err = ide_config_drive_speed(drive, speed);
294         drive->current_speed = speed;
295         return(err);
296 }
297 
298 
299 static int aec62xx_tune_chipset (ide_drive_t *drive, byte speed)
300 {
301         if (HWIF(drive)->pci_dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF) {
302                 return ((int) aec6210_tune_chipset(drive, speed));
303         } else {
304                 return ((int) aec6260_tune_chipset(drive, speed));
305         }
306 }
307 
308 #ifdef CONFIG_BLK_DEV_IDEDMA
309 static int config_aec6210_chipset_for_dma (ide_drive_t *drive, byte ultra)
310 {
311         struct hd_driveid *id   = drive->id;
312         ide_hwif_t *hwif        = HWIF(drive);
313         byte unit               = (drive->select.b.unit & 0x01);
314         unsigned long dma_base  = hwif->dma_base;
315         byte speed              = -1;
316 
317         if (drive->media != ide_disk)
318                 return ((int) ide_dma_off_quietly);
319 
320         if (((id->dma_ultra & 0x0010) ||
321              (id->dma_ultra & 0x0008) ||
322              (id->dma_ultra & 0x0004)) && (ultra)) {
323                 speed = XFER_UDMA_2;
324         } else if ((id->dma_ultra & 0x0002) && (ultra)) {
325                 speed = XFER_UDMA_1;
326         } else if ((id->dma_ultra & 0x0001) && (ultra)) {
327                 speed = XFER_UDMA_0;
328         } else if (id->dma_mword & 0x0004) {
329                 speed = XFER_MW_DMA_2;
330         } else if (id->dma_mword & 0x0002) {
331                 speed = XFER_MW_DMA_1;
332         } else if (id->dma_mword & 0x0001) {
333                 speed = XFER_MW_DMA_0;
334         } else if (id->dma_1word & 0x0004) {
335                 speed = XFER_SW_DMA_2;
336         } else if (id->dma_1word & 0x0002) {
337                 speed = XFER_SW_DMA_1;
338         } else if (id->dma_1word & 0x0001) {
339                 speed = XFER_SW_DMA_0;
340         } else {
341                 return ((int) ide_dma_off_quietly);
342         }
343 
344         outb(inb(dma_base+2) & ~(1<<(5+unit)), dma_base+2);
345         (void) aec6210_tune_chipset(drive, speed);
346 
347         return ((int)   ((id->dma_ultra >> 11) & 3) ? ide_dma_off :
348                         ((id->dma_ultra >> 8) & 7) ? ide_dma_on :
349                         ((id->dma_mword >> 8) & 7) ? ide_dma_on :
350                         ((id->dma_1word >> 8) & 7) ? ide_dma_on :
351                                                      ide_dma_off_quietly);
352 }
353 
354 static int config_aec6260_chipset_for_dma (ide_drive_t *drive, byte ultra)
355 {
356         struct hd_driveid *id   = drive->id;
357         ide_hwif_t *hwif        = HWIF(drive);
358         byte unit               = (drive->select.b.unit & 0x01);
359         unsigned long dma_base  = hwif->dma_base;
360         byte speed              = -1;
361         byte ultra66            = eighty_ninty_three(drive);
362 
363         if (drive->media != ide_disk)
364                 return ((int) ide_dma_off_quietly);
365 
366         if ((id->dma_ultra & 0x0010) && (ultra) && (ultra66)) {
367                 speed = XFER_UDMA_4;
368         } else if ((id->dma_ultra & 0x0008) && (ultra) && (ultra66)) {
369                 speed = XFER_UDMA_3;
370         } else if ((id->dma_ultra & 0x0004) && (ultra)) {
371                 speed = XFER_UDMA_2;
372         } else if ((id->dma_ultra & 0x0002) && (ultra)) {
373                 speed = XFER_UDMA_1;
374         } else if ((id->dma_ultra & 0x0001) && (ultra)) {
375                 speed = XFER_UDMA_0;
376         } else if (id->dma_mword & 0x0004) {
377                 speed = XFER_MW_DMA_2;
378         } else if (id->dma_mword & 0x0002) {
379                 speed = XFER_MW_DMA_1;
380         } else if (id->dma_mword & 0x0001) {
381                 speed = XFER_MW_DMA_0;
382         } else if (id->dma_1word & 0x0004) {
383                 speed = XFER_SW_DMA_2;
384         } else if (id->dma_1word & 0x0002) {
385                 speed = XFER_SW_DMA_1;
386         } else if (id->dma_1word & 0x0001) {
387                 speed = XFER_SW_DMA_0;
388         } else {
389                 return ((int) ide_dma_off_quietly);
390         }
391 
392         outb(inb(dma_base+2) & ~(1<<(5+unit)), dma_base+2);
393         (void) aec6260_tune_chipset(drive, speed);
394 
395         return ((int)   ((id->dma_ultra >> 11) & 3) ? ide_dma_on :
396                         ((id->dma_ultra >> 8) & 7) ? ide_dma_on :
397                         ((id->dma_mword >> 8) & 7) ? ide_dma_on :
398                         ((id->dma_1word >> 8) & 7) ? ide_dma_on :
399                                                      ide_dma_off_quietly);
400 }
401 
402 static int config_chipset_for_dma (ide_drive_t *drive, byte ultra)
403 {
404         switch(HWIF(drive)->pci_dev->device) {  
405                 case PCI_DEVICE_ID_ARTOP_ATP850UF:
406                         return config_aec6210_chipset_for_dma(drive, ultra);
407                 case PCI_DEVICE_ID_ARTOP_ATP860:
408                 case PCI_DEVICE_ID_ARTOP_ATP860R:
409                         return config_aec6260_chipset_for_dma(drive, ultra);
410                 default:
411                         return ((int) ide_dma_off_quietly);
412         }
413 }
414 
415 #endif /* CONFIG_BLK_DEV_IDEDMA */
416 
417 static void aec62xx_tune_drive (ide_drive_t *drive, byte pio)
418 {
419         byte speed;
420         byte new_pio = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL);
421 
422         switch(pio) {
423                 case 5:         speed = new_pio; break;
424                 case 4:         speed = XFER_PIO_4; break;
425                 case 3:         speed = XFER_PIO_3; break;
426                 case 2:         speed = XFER_PIO_2; break;
427                 case 1:         speed = XFER_PIO_1; break;
428                 default:        speed = XFER_PIO_0; break;
429         }
430 
431         switch(HWIF(drive)->pci_dev->device) {
432                 case PCI_DEVICE_ID_ARTOP_ATP850UF:
433                         (void) aec6210_tune_chipset(drive, speed);
434                 case PCI_DEVICE_ID_ARTOP_ATP860:
435                 case PCI_DEVICE_ID_ARTOP_ATP860R:
436                         (void) aec6260_tune_chipset(drive, speed);
437                 default:
438                         break;
439         }
440 }
441 
442 #ifdef CONFIG_BLK_DEV_IDEDMA
443 static int config_drive_xfer_rate (ide_drive_t *drive)
444 {
445         struct hd_driveid *id = drive->id;
446         ide_dma_action_t dma_func = ide_dma_on;
447 
448         if (id && (id->capability & 1) && HWIF(drive)->autodma) {
449                 /* Consult the list of known "bad" drives */
450                 if (ide_dmaproc(ide_dma_bad_drive, drive)) {
451                         dma_func = ide_dma_off;
452                         goto fast_ata_pio;
453                 }
454                 dma_func = ide_dma_off_quietly;
455                 if (id->field_valid & 4) {
456                         if (id->dma_ultra & 0x001F) {
457                                 /* Force if Capable UltraDMA */
458                                 dma_func = config_chipset_for_dma(drive, 1);
459                                 if ((id->field_valid & 2) &&
460                                     (dma_func != ide_dma_on))
461                                         goto try_dma_modes;
462                         }
463                 } else if (id->field_valid & 2) {
464 try_dma_modes:
465                         if ((id->dma_mword & 0x0007) ||
466                             (id->dma_1word & 0x0007)) {
467                                 /* Force if Capable regular DMA modes */
468                                 dma_func = config_chipset_for_dma(drive, 0);
469                                 if (dma_func != ide_dma_on)
470                                         goto no_dma_set;
471                         }
472                 } else if (ide_dmaproc(ide_dma_good_drive, drive)) {
473                         if (id->eide_dma_time > 150) {
474                                 goto no_dma_set;
475                         }
476                         /* Consult the list of known "good" drives */
477                         dma_func = config_chipset_for_dma(drive, 0);
478                         if (dma_func != ide_dma_on)
479                                 goto no_dma_set;
480                 } else {
481                         goto fast_ata_pio;
482                 }
483         } else if ((id->capability & 8) || (id->field_valid & 2)) {
484 fast_ata_pio:
485                 dma_func = ide_dma_off_quietly;
486 no_dma_set:
487                 aec62xx_tune_drive(drive, 5);
488         }
489         return HWIF(drive)->dmaproc(dma_func, drive);
490 }
491 
492 /*
493  * aec62xx_dmaproc() initiates/aborts (U)DMA read/write operations on a drive.
494  */
495 int aec62xx_dmaproc (ide_dma_action_t func, ide_drive_t *drive)
496 {
497         switch (func) {
498                 case ide_dma_check:
499                         return config_drive_xfer_rate(drive);
500                 case ide_dma_lostirq:
501                 case ide_dma_timeout:
502                         switch(HWIF(drive)->pci_dev->device) {
503                                 case PCI_DEVICE_ID_ARTOP_ATP860:
504                                 case PCI_DEVICE_ID_ARTOP_ATP860R:
505 //                                      {
506 //                                              int i = 0;
507 //                                              byte reg49h = 0;
508 //                                              pci_read_config_byte(HWIF(drive)->pci_dev, 0x49, &reg49h);
509 //                                              for (i=0;i<256;i++)
510 //                                                      pci_write_config_byte(HWIF(drive)->pci_dev, 0x49, reg49h|0x10);
511 //                                              pci_write_config_byte(HWIF(drive)->pci_dev, 0x49, reg49h & ~0x10);
512 //                                      }
513 //                                      return 0;
514                                 default:
515                                         break;
516                         }
517                 default:
518                         break;
519         }
520         return ide_dmaproc(func, drive);        /* use standard DMA stuff */
521 }
522 #endif /* CONFIG_BLK_DEV_IDEDMA */
523 #endif /* CONFIG_AEC62XX_TUNING */
524 
525 unsigned int __init pci_init_aec62xx (struct pci_dev *dev, const char *name)
526 {
527         if (dev->resource[PCI_ROM_RESOURCE].start) {
528                 pci_write_config_dword(dev, PCI_ROM_ADDRESS, dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
529                 printk("%s: ROM enabled at 0x%08lx\n", name, dev->resource[PCI_ROM_RESOURCE].start);
530         }
531 
532 #if defined(DISPLAY_AEC62XX_TIMINGS) && defined(CONFIG_PROC_FS)
533         if (!aec62xx_proc) {
534                 aec62xx_proc = 1;
535                 bmide_dev = dev;
536                 aec62xx_display_info = &aec62xx_get_info;
537         }
538 #endif /* DISPLAY_AEC62XX_TIMINGS && CONFIG_PROC_FS */
539 
540         return dev->irq;
541 }
542 
543 unsigned int __init ata66_aec62xx (ide_hwif_t *hwif)
544 {
545         byte mask       = hwif->channel ? 0x02 : 0x01;
546         byte ata66      = 0;
547 
548         pci_read_config_byte(hwif->pci_dev, 0x49, &ata66);
549         return ((ata66 & mask) ? 0 : 1);
550 }
551 
552 void __init ide_init_aec62xx (ide_hwif_t *hwif)
553 {
554 #ifdef CONFIG_AEC62XX_TUNING
555         hwif->tuneproc = &aec62xx_tune_drive;
556         hwif->speedproc = &aec62xx_tune_chipset;
557 #ifdef CONFIG_BLK_DEV_IDEDMA
558         if (hwif->dma_base)
559                 hwif->dmaproc = &aec62xx_dmaproc;
560 #else /* !CONFIG_BLK_DEV_IDEDMA */
561         hwif->drives[0].autotune = 1;
562         hwif->drives[1].autotune = 1;
563 #endif /* CONFIG_BLK_DEV_IDEDMA */
564 #endif /* CONFIG_AEC62XX_TUNING */
565 }
566 
567 void __init ide_dmacapable_aec62xx (ide_hwif_t *hwif, unsigned long dmabase)
568 {
569 #ifdef CONFIG_AEC62XX_TUNING
570         unsigned long flags;
571         byte reg54h = 0;
572 
573         __save_flags(flags);    /* local CPU only */
574         __cli();                /* local CPU only */
575 
576         pci_read_config_byte(hwif->pci_dev, 0x54, &reg54h);
577         pci_write_config_byte(hwif->pci_dev, 0x54, reg54h & ~(hwif->channel ? 0xF0 : 0x0F));
578 
579         __restore_flags(flags); /* local CPU only */
580 #endif /* CONFIG_AEC62XX_TUNING */
581         ide_setup_dma(hwif, dmabase, 8);
582 }
583 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~ [ freetext search ] ~ [ file search ] ~

This page was automatically generated by the LXR engine.
Visit the LXR main site for more information.