-/* $Id: cmd64x.c,v 1.21 2000/01/30 23:23:16
- *
- * linux/drivers/ide/pci/cmd64x.c Version 1.42 Feb 8, 2007
+/*
+ * linux/drivers/ide/pci/cmd64x.c Version 1.47 Mar 19, 2007
*
* cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
- * Note, this driver is not used at all on other systems because
- * there the "BIOS" has done all of the following already.
* Due to massive hardware bugs, UltraDMA is only supported
* on the 646U2 and not on the 646U.
*
* CMD64x specific registers definition.
*/
#define CFR 0x50
-#define CFR_INTR_CH0 0x02
+#define CFR_INTR_CH0 0x04
#define CNTRL 0x51
-#define CNTRL_DIS_RA0 0x40
-#define CNTRL_DIS_RA1 0x80
-#define CNTRL_ENA_2ND 0x08
+#define CNTRL_ENA_1ST 0x04
+#define CNTRL_ENA_2ND 0x08
+#define CNTRL_DIS_RA0 0x40
+#define CNTRL_DIS_RA1 0x80
#define CMDTIM 0x52
#define ARTTIM0 0x53
#define UDIDETCR1 0x7B
#define DTPR1 0x7C
-#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
#include <linux/stat.h>
#include <linux/proc_fs.h>
static char * print_cmd64x_get_info (char *buf, struct pci_dev *dev, int index)
{
char *p = buf;
-
- u8 reg53 = 0, reg54 = 0, reg55 = 0, reg56 = 0; /* primary */
- u8 reg57 = 0, reg58 = 0, reg5b; /* secondary */
u8 reg72 = 0, reg73 = 0; /* primary */
u8 reg7a = 0, reg7b = 0; /* secondary */
- u8 reg50 = 0, reg71 = 0; /* extra */
+ u8 reg50 = 1, reg51 = 1, reg57 = 0, reg71 = 0; /* extra */
+ u8 rev = 0;
p += sprintf(p, "\nController: %d\n", index);
- p += sprintf(p, "CMD%x Chipset.\n", dev->device);
+ p += sprintf(p, "PCI-%x Chipset.\n", dev->device);
+
(void) pci_read_config_byte(dev, CFR, ®50);
- (void) pci_read_config_byte(dev, ARTTIM0, ®53);
- (void) pci_read_config_byte(dev, DRWTIM0, ®54);
- (void) pci_read_config_byte(dev, ARTTIM1, ®55);
- (void) pci_read_config_byte(dev, DRWTIM1, ®56);
- (void) pci_read_config_byte(dev, ARTTIM2, ®57);
- (void) pci_read_config_byte(dev, DRWTIM2, ®58);
- (void) pci_read_config_byte(dev, DRWTIM3, ®5b);
+ (void) pci_read_config_byte(dev, CNTRL, ®51);
+ (void) pci_read_config_byte(dev, ARTTIM23, ®57);
(void) pci_read_config_byte(dev, MRDMODE, ®71);
(void) pci_read_config_byte(dev, BMIDESR0, ®72);
(void) pci_read_config_byte(dev, UDIDETCR0, ®73);
(void) pci_read_config_byte(dev, BMIDESR1, ®7a);
(void) pci_read_config_byte(dev, UDIDETCR1, ®7b);
- p += sprintf(p, "--------------- Primary Channel "
- "---------------- Secondary Channel "
- "-------------\n");
- p += sprintf(p, " %sabled "
- " %sabled\n",
- (reg72&0x80)?"dis":" en",
- (reg7a&0x80)?"dis":" en");
- p += sprintf(p, "--------------- drive0 "
- "--------- drive1 -------- drive0 "
- "---------- drive1 ------\n");
- p += sprintf(p, "DMA enabled: %s %s"
- " %s %s\n",
- (reg72&0x20)?"yes":"no ", (reg72&0x40)?"yes":"no ",
- (reg7a&0x20)?"yes":"no ", (reg7a&0x40)?"yes":"no ");
-
- p += sprintf(p, "DMA Mode: %s(%s) %s(%s)",
- (reg72&0x20)?((reg73&0x01)?"UDMA":" DMA"):" PIO",
- (reg72&0x20)?(
- ((reg73&0x30)==0x30)?(((reg73&0x35)==0x35)?"3":"0"):
- ((reg73&0x20)==0x20)?(((reg73&0x25)==0x25)?"3":"1"):
- ((reg73&0x10)==0x10)?(((reg73&0x15)==0x15)?"4":"2"):
- ((reg73&0x00)==0x00)?(((reg73&0x05)==0x05)?"5":"2"):
- "X"):"?",
- (reg72&0x40)?((reg73&0x02)?"UDMA":" DMA"):" PIO",
- (reg72&0x40)?(
- ((reg73&0xC0)==0xC0)?(((reg73&0xC5)==0xC5)?"3":"0"):
- ((reg73&0x80)==0x80)?(((reg73&0x85)==0x85)?"3":"1"):
- ((reg73&0x40)==0x40)?(((reg73&0x4A)==0x4A)?"4":"2"):
- ((reg73&0x00)==0x00)?(((reg73&0x0A)==0x0A)?"5":"2"):
- "X"):"?");
- p += sprintf(p, " %s(%s) %s(%s)\n",
- (reg7a&0x20)?((reg7b&0x01)?"UDMA":" DMA"):" PIO",
- (reg7a&0x20)?(
- ((reg7b&0x30)==0x30)?(((reg7b&0x35)==0x35)?"3":"0"):
- ((reg7b&0x20)==0x20)?(((reg7b&0x25)==0x25)?"3":"1"):
- ((reg7b&0x10)==0x10)?(((reg7b&0x15)==0x15)?"4":"2"):
- ((reg7b&0x00)==0x00)?(((reg7b&0x05)==0x05)?"5":"2"):
- "X"):"?",
- (reg7a&0x40)?((reg7b&0x02)?"UDMA":" DMA"):" PIO",
- (reg7a&0x40)?(
- ((reg7b&0xC0)==0xC0)?(((reg7b&0xC5)==0xC5)?"3":"0"):
- ((reg7b&0x80)==0x80)?(((reg7b&0x85)==0x85)?"3":"1"):
- ((reg7b&0x40)==0x40)?(((reg7b&0x4A)==0x4A)?"4":"2"):
- ((reg7b&0x00)==0x00)?(((reg7b&0x0A)==0x0A)?"5":"2"):
- "X"):"?" );
- p += sprintf(p, "PIO Mode: %s %s"
- " %s %s\n",
- "?", "?", "?", "?");
- p += sprintf(p, " %s %s\n",
- (reg50 & CFR_INTR_CH0) ? "interrupting" : "polling ",
- (reg57 & ARTTIM23_INTR_CH1) ? "interrupting" : "polling");
- p += sprintf(p, " %s %s\n",
- (reg71 & MRDMODE_INTR_CH0) ? "pending" : "clear ",
- (reg71 & MRDMODE_INTR_CH1) ? "pending" : "clear");
- p += sprintf(p, " %s %s\n",
- (reg71 & MRDMODE_BLK_CH0) ? "blocked" : "enabled",
- (reg71 & MRDMODE_BLK_CH1) ? "blocked" : "enabled");
+ /* PCI0643/6 originally didn't have the primary channel enable bit */
+ (void) pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+ if ((dev->device == PCI_DEVICE_ID_CMD_643) ||
+ (dev->device == PCI_DEVICE_ID_CMD_646 && rev < 3))
+ reg51 |= CNTRL_ENA_1ST;
+
+ p += sprintf(p, "---------------- Primary Channel "
+ "---------------- Secondary Channel ------------\n");
+ p += sprintf(p, " %s %s\n",
+ (reg51 & CNTRL_ENA_1ST) ? "enabled " : "disabled",
+ (reg51 & CNTRL_ENA_2ND) ? "enabled " : "disabled");
+ p += sprintf(p, "---------------- drive0 --------- drive1 "
+ "-------- drive0 --------- drive1 ------\n");
+ p += sprintf(p, "DMA enabled: %s %s"
+ " %s %s\n",
+ (reg72 & 0x20) ? "yes" : "no ", (reg72 & 0x40) ? "yes" : "no ",
+ (reg7a & 0x20) ? "yes" : "no ", (reg7a & 0x40) ? "yes" : "no ");
+ p += sprintf(p, "UltraDMA mode: %s (%c) %s (%c)",
+ ( reg73 & 0x01) ? " on" : "off",
+ ((reg73 & 0x30) == 0x30) ? ((reg73 & 0x04) ? '3' : '0') :
+ ((reg73 & 0x30) == 0x20) ? ((reg73 & 0x04) ? '3' : '1') :
+ ((reg73 & 0x30) == 0x10) ? ((reg73 & 0x04) ? '4' : '2') :
+ ((reg73 & 0x30) == 0x00) ? ((reg73 & 0x04) ? '5' : '2') : '?',
+ ( reg73 & 0x02) ? " on" : "off",
+ ((reg73 & 0xC0) == 0xC0) ? ((reg73 & 0x08) ? '3' : '0') :
+ ((reg73 & 0xC0) == 0x80) ? ((reg73 & 0x08) ? '3' : '1') :
+ ((reg73 & 0xC0) == 0x40) ? ((reg73 & 0x08) ? '4' : '2') :
+ ((reg73 & 0xC0) == 0x00) ? ((reg73 & 0x08) ? '5' : '2') : '?');
+ p += sprintf(p, " %s (%c) %s (%c)\n",
+ ( reg7b & 0x01) ? " on" : "off",
+ ((reg7b & 0x30) == 0x30) ? ((reg7b & 0x04) ? '3' : '0') :
+ ((reg7b & 0x30) == 0x20) ? ((reg7b & 0x04) ? '3' : '1') :
+ ((reg7b & 0x30) == 0x10) ? ((reg7b & 0x04) ? '4' : '2') :
+ ((reg7b & 0x30) == 0x00) ? ((reg7b & 0x04) ? '5' : '2') : '?',
+ ( reg7b & 0x02) ? " on" : "off",
+ ((reg7b & 0xC0) == 0xC0) ? ((reg7b & 0x08) ? '3' : '0') :
+ ((reg7b & 0xC0) == 0x80) ? ((reg7b & 0x08) ? '3' : '1') :
+ ((reg7b & 0xC0) == 0x40) ? ((reg7b & 0x08) ? '4' : '2') :
+ ((reg7b & 0xC0) == 0x00) ? ((reg7b & 0x08) ? '5' : '2') : '?');
+ p += sprintf(p, "Interrupt: %s, %s %s, %s\n",
+ (reg71 & MRDMODE_BLK_CH0 ) ? "blocked" : "enabled",
+ (reg50 & CFR_INTR_CH0 ) ? "pending" : "clear ",
+ (reg71 & MRDMODE_BLK_CH1 ) ? "blocked" : "enabled",
+ (reg57 & ARTTIM23_INTR_CH1) ? "pending" : "clear ");
return (char *)p;
}
char *p = buffer;
int i;
- p += sprintf(p, "\n");
for (i = 0; i < n_cmd_devs; i++) {
struct pci_dev *dev = cmd_devs[i];
p = print_cmd64x_get_info(p, dev, i);
return p-buffer; /* => must be less than 4k! */
}
-#endif /* defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS) */
+#endif /* defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
static u8 quantize_timing(int timing, int quant)
{
}
/*
- * This routine writes the prepared setup/active/recovery counts
- * for a drive into the cmd646 chipset registers to active them.
+ * This routine calculates active/recovery counts and then writes them into
+ * the chipset registers.
*/
-static void program_drive_counts (ide_drive_t *drive, int setup_count, int active_count, int recovery_count)
+static void program_cycle_times (ide_drive_t *drive, int cycle_time, int active_time)
{
- unsigned long flags;
- struct pci_dev *dev = HWIF(drive)->pci_dev;
- ide_drive_t *drives = HWIF(drive)->drives;
- u8 temp_b;
- static const u8 setup_counts[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0};
- static const u8 recovery_counts[] =
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ int clock_time = 1000 / system_bus_clock();
+ u8 cycle_count, active_count, recovery_count, drwtim;
+ static const u8 recovery_values[] =
{15, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0};
- static const u8 arttim_regs[2][2] = {
- { ARTTIM0, ARTTIM1 },
- { ARTTIM23, ARTTIM23 }
- };
- static const u8 drwtim_regs[2][2] = {
- { DRWTIM0, DRWTIM1 },
- { DRWTIM2, DRWTIM3 }
- };
- int channel = (int) HWIF(drive)->channel;
- int slave = (drives != drive); /* Is this really the best way to determine this?? */
-
- cmdprintk("program_drive_count parameters = s(%d),a(%d),r(%d),p(%d)\n",
- setup_count, active_count, recovery_count, drive->present);
+ static const u8 drwtim_regs[4] = {DRWTIM0, DRWTIM1, DRWTIM2, DRWTIM3};
+
+ cmdprintk("program_cycle_times parameters: total=%d, active=%d\n",
+ cycle_time, active_time);
+
+ cycle_count = quantize_timing( cycle_time, clock_time);
+ active_count = quantize_timing(active_time, clock_time);
+ recovery_count = cycle_count - active_count;
+
/*
- * Set up address setup count registers.
- * Primary interface has individual count/timing registers for
- * each drive. Secondary interface has one common set of registers,
- * for address setup so we merge these timings, using the slowest
- * value.
+ * In case we've got too long recovery phase, try to lengthen
+ * the active phase
*/
- if (channel) {
- drive->drive_data = setup_count;
- setup_count = max(drives[0].drive_data,
- drives[1].drive_data);
- cmdprintk("Secondary interface, setup_count = %d\n",
- setup_count);
+ if (recovery_count > 16) {
+ active_count += recovery_count - 16;
+ recovery_count = 16;
}
+ if (active_count > 16) /* shouldn't actually happen... */
+ active_count = 16;
+
+ cmdprintk("Final counts: total=%d, active=%d, recovery=%d\n",
+ cycle_count, active_count, recovery_count);
/*
* Convert values to internal chipset representation
*/
- setup_count = (setup_count > 5) ? 0xc0 : (int) setup_counts[setup_count];
- active_count &= 0xf; /* Remember, max value is 16 */
- recovery_count = (int) recovery_counts[recovery_count];
+ recovery_count = recovery_values[recovery_count];
+ active_count &= 0x0f;
- cmdprintk("Final values = %d,%d,%d\n",
- setup_count, active_count, recovery_count);
-
- /*
- * Now that everything is ready, program the new timings
- */
- local_irq_save(flags);
- /*
- * Program the address_setup clocks into ARTTIM reg,
- * and then the active/recovery counts into the DRWTIM reg
- */
- (void) pci_read_config_byte(dev, arttim_regs[channel][slave], &temp_b);
- (void) pci_write_config_byte(dev, arttim_regs[channel][slave],
- ((u8) setup_count) | (temp_b & 0x3f));
- (void) pci_write_config_byte(dev, drwtim_regs[channel][slave],
- (u8) ((active_count << 4) | recovery_count));
- cmdprintk ("Write %x to %x\n",
- ((u8) setup_count) | (temp_b & 0x3f),
- arttim_regs[channel][slave]);
- cmdprintk ("Write %x to %x\n",
- (u8) ((active_count << 4) | recovery_count),
- drwtim_regs[channel][slave]);
- local_irq_restore(flags);
+ /* Program the active/recovery counts into the DRWTIM register */
+ drwtim = (active_count << 4) | recovery_count;
+ (void) pci_write_config_byte(dev, drwtim_regs[drive->dn], drwtim);
+ cmdprintk("Write 0x%02x to reg 0x%x\n", drwtim, drwtim_regs[drive->dn]);
}
/*
- * This routine selects drive's best PIO mode, calculates setup/active/recovery
- * counts, and then writes them into the chipset registers.
+ * This routine selects drive's best PIO mode and writes into the chipset
+ * registers setup/active/recovery timings.
*/
static u8 cmd64x_tune_pio (ide_drive_t *drive, u8 mode_wanted)
{
- int setup_time, active_time, cycle_time;
- u8 cycle_count, setup_count, active_count, recovery_count;
- u8 pio_mode;
- int clock_time = 1000 / system_bus_clock();
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;
ide_pio_data_t pio;
-
+ u8 pio_mode, setup_count, arttim = 0;
+ static const u8 setup_values[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0};
+ static const u8 arttim_regs[4] = {ARTTIM0, ARTTIM1, ARTTIM23, ARTTIM23};
pio_mode = ide_get_best_pio_mode(drive, mode_wanted, 5, &pio);
- cycle_time = pio.cycle_time;
- setup_time = ide_pio_timings[pio_mode].setup_time;
- active_time = ide_pio_timings[pio_mode].active_time;
+ cmdprintk("%s: PIO mode wanted %d, selected %d (%d ns)%s\n",
+ drive->name, mode_wanted, pio_mode, pio.cycle_time,
+ pio.overridden ? " (overriding vendor mode)" : "");
- setup_count = quantize_timing( setup_time, clock_time);
- cycle_count = quantize_timing( cycle_time, clock_time);
- active_count = quantize_timing(active_time, clock_time);
+ program_cycle_times(drive, pio.cycle_time,
+ ide_pio_timings[pio_mode].active_time);
- recovery_count = cycle_count - active_count;
- /* program_drive_counts() takes care of zero recovery cycles */
- if (recovery_count > 16) {
- active_count += recovery_count - 16;
- recovery_count = 16;
+ setup_count = quantize_timing(ide_pio_timings[pio_mode].setup_time,
+ 1000 / system_bus_clock());
+
+ /*
+ * The primary channel has individual address setup timing registers
+ * for each drive and the hardware selects the slowest timing itself.
+ * The secondary channel has one common register and we have to select
+ * the slowest address setup timing ourselves.
+ */
+ if (hwif->channel) {
+ ide_drive_t *drives = hwif->drives;
+
+ drive->drive_data = setup_count;
+ setup_count = max(drives[0].drive_data, drives[1].drive_data);
}
- if (active_count > 16)
- active_count = 16; /* maximum allowed by cmd64x */
- program_drive_counts (drive, setup_count, active_count, recovery_count);
+ if (setup_count > 5) /* shouldn't actually happen... */
+ setup_count = 5;
+ cmdprintk("Final address setup count: %d\n", setup_count);
- cmdprintk("%s: PIO mode wanted %d, selected %d (%dns)%s, "
- "clocks=%d/%d/%d\n",
- drive->name, mode_wanted, pio_mode, cycle_time,
- pio.overridden ? " (overriding vendor mode)" : "",
- setup_count, active_count, recovery_count);
+ /*
+ * Program the address setup clocks into the ARTTIM registers.
+ * Avoid clearing the secondary channel's interrupt bit.
+ */
+ (void) pci_read_config_byte (dev, arttim_regs[drive->dn], &arttim);
+ if (hwif->channel)
+ arttim &= ~ARTTIM23_INTR_CH1;
+ arttim &= ~0xc0;
+ arttim |= setup_values[setup_count];
+ (void) pci_write_config_byte(dev, arttim_regs[drive->dn], arttim);
+ cmdprintk("Write 0x%02x to reg 0x%x\n", arttim, arttim_regs[drive->dn]);
return pio_mode;
}
(void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
}
-static u8 cmd64x_ratemask (ide_drive_t *drive)
-{
- struct pci_dev *dev = HWIF(drive)->pci_dev;
- u8 mode = 0;
-
- switch(dev->device) {
- case PCI_DEVICE_ID_CMD_649:
- mode = 3;
- break;
- case PCI_DEVICE_ID_CMD_648:
- mode = 2;
- break;
- case PCI_DEVICE_ID_CMD_643:
- return 0;
-
- case PCI_DEVICE_ID_CMD_646:
- {
- unsigned int class_rev = 0;
- pci_read_config_dword(dev,
- PCI_CLASS_REVISION, &class_rev);
- class_rev &= 0xff;
- /*
- * UltraDMA only supported on PCI646U and PCI646U2, which
- * correspond to revisions 0x03, 0x05 and 0x07 respectively.
- * Actually, although the CMD tech support people won't
- * tell me the details, the 0x03 revision cannot support
- * UDMA correctly without hardware modifications, and even
- * then it only works with Quantum disks due to some
- * hold time assumptions in the 646U part which are fixed
- * in the 646U2.
- *
- * So we only do UltraDMA on revision 0x05 and 0x07 chipsets.
- */
- switch(class_rev) {
- case 0x07:
- case 0x05:
- return 1;
- case 0x03:
- case 0x01:
- default:
- return 0;
- }
- }
- }
- if (!eighty_ninty_three(drive))
- mode = min(mode, (u8)1);
- return mode;
-}
-
-static int cmd64x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
+ u8 unit = drive->dn & 0x01;
+ u8 regU = 0, pciU = hwif->channel ? UDIDETCR1 : UDIDETCR0;
- u8 unit = (drive->select.b.unit & 0x01);
- u8 regU = 0, pciU = (hwif->channel) ? UDIDETCR1 : UDIDETCR0;
- u8 regD = 0, pciD = (hwif->channel) ? BMIDESR1 : BMIDESR0;
-
- u8 speed = ide_rate_filter(cmd64x_ratemask(drive), xferspeed);
+ speed = ide_rate_filter(drive, speed);
if (speed >= XFER_SW_DMA_0) {
- (void) pci_read_config_byte(dev, pciD, ®D);
(void) pci_read_config_byte(dev, pciU, ®U);
- regD &= ~(unit ? 0x40 : 0x20);
regU &= ~(unit ? 0xCA : 0x35);
- (void) pci_write_config_byte(dev, pciD, regD);
- (void) pci_write_config_byte(dev, pciU, regU);
- (void) pci_read_config_byte(dev, pciD, ®D);
- (void) pci_read_config_byte(dev, pciU, ®U);
}
switch(speed) {
- case XFER_UDMA_5: regU |= (unit ? 0x0A : 0x05); break;
- case XFER_UDMA_4: regU |= (unit ? 0x4A : 0x15); break;
- case XFER_UDMA_3: regU |= (unit ? 0x8A : 0x25); break;
- case XFER_UDMA_2: regU |= (unit ? 0x42 : 0x11); break;
- case XFER_UDMA_1: regU |= (unit ? 0x82 : 0x21); break;
- case XFER_UDMA_0: regU |= (unit ? 0xC2 : 0x31); break;
- case XFER_MW_DMA_2: regD |= (unit ? 0x40 : 0x10); break;
- case XFER_MW_DMA_1: regD |= (unit ? 0x80 : 0x20); break;
- case XFER_MW_DMA_0: regD |= (unit ? 0xC0 : 0x30); break;
- case XFER_SW_DMA_2: regD |= (unit ? 0x40 : 0x10); break;
- case XFER_SW_DMA_1: regD |= (unit ? 0x80 : 0x20); break;
- case XFER_SW_DMA_0: regD |= (unit ? 0xC0 : 0x30); break;
- case XFER_PIO_5:
- case XFER_PIO_4:
- case XFER_PIO_3:
- case XFER_PIO_2:
- case XFER_PIO_1:
- case XFER_PIO_0:
- (void) cmd64x_tune_pio(drive, speed - XFER_PIO_0);
- break;
-
- default:
- return 1;
+ case XFER_UDMA_5:
+ regU |= unit ? 0x0A : 0x05;
+ break;
+ case XFER_UDMA_4:
+ regU |= unit ? 0x4A : 0x15;
+ break;
+ case XFER_UDMA_3:
+ regU |= unit ? 0x8A : 0x25;
+ break;
+ case XFER_UDMA_2:
+ regU |= unit ? 0x42 : 0x11;
+ break;
+ case XFER_UDMA_1:
+ regU |= unit ? 0x82 : 0x21;
+ break;
+ case XFER_UDMA_0:
+ regU |= unit ? 0xC2 : 0x31;
+ break;
+ case XFER_MW_DMA_2:
+ program_cycle_times(drive, 120, 70);
+ break;
+ case XFER_MW_DMA_1:
+ program_cycle_times(drive, 150, 80);
+ break;
+ case XFER_MW_DMA_0:
+ program_cycle_times(drive, 480, 215);
+ break;
+ case XFER_PIO_5:
+ case XFER_PIO_4:
+ case XFER_PIO_3:
+ case XFER_PIO_2:
+ case XFER_PIO_1:
+ case XFER_PIO_0:
+ (void) cmd64x_tune_pio(drive, speed - XFER_PIO_0);
+ break;
+ default:
+ return 1;
}
- if (speed >= XFER_SW_DMA_0) {
+ if (speed >= XFER_SW_DMA_0)
(void) pci_write_config_byte(dev, pciU, regU);
- regD |= (unit ? 0x40 : 0x20);
- (void) pci_write_config_byte(dev, pciD, regD);
- }
- return (ide_config_drive_speed(drive, speed));
-}
-
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
- u8 speed = ide_dma_speed(drive, cmd64x_ratemask(drive));
-
- if (!speed)
- return 0;
-
- if (cmd64x_tune_chipset(drive, speed))
- return 0;
-
- return ide_dma_enable(drive);
+ return ide_config_drive_speed(drive, speed);
}
static int cmd64x_config_drive_for_dma (ide_drive_t *drive)
{
- if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+ if (ide_tune_dma(drive))
return 0;
if (ide_use_fast_pio(drive))
return -1;
}
-static int cmd64x_alt_dma_status (struct pci_dev *dev)
+static int cmd648_ide_dma_end (ide_drive_t *drive)
{
- switch(dev->device) {
- case PCI_DEVICE_ID_CMD_648:
- case PCI_DEVICE_ID_CMD_649:
- return 1;
- default:
- break;
- }
- return 0;
+ ide_hwif_t *hwif = HWIF(drive);
+ int err = __ide_dma_end(drive);
+ u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
+ MRDMODE_INTR_CH0;
+ u8 mrdmode = inb(hwif->dma_master + 0x01);
+
+ /* clear the interrupt bit */
+ outb(mrdmode | irq_mask, hwif->dma_master + 0x01);
+
+ return err;
}
static int cmd64x_ide_dma_end (ide_drive_t *drive)
{
- u8 dma_stat = 0, dma_cmd = 0;
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
+ int irq_reg = hwif->channel ? ARTTIM23 : CFR;
+ u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
+ CFR_INTR_CH0;
+ u8 irq_stat = 0;
+ int err = __ide_dma_end(drive);
- drive->waiting_for_dma = 0;
- /* read DMA command state */
- dma_cmd = inb(hwif->dma_command);
- /* stop DMA */
- outb(dma_cmd & ~1, hwif->dma_command);
- /* get DMA status */
- dma_stat = inb(hwif->dma_status);
- /* clear the INTR & ERROR bits */
- outb(dma_stat | 6, hwif->dma_status);
- if (cmd64x_alt_dma_status(dev)) {
- u8 dma_intr = 0;
- u8 dma_mask = (hwif->channel) ? ARTTIM23_INTR_CH1 :
- CFR_INTR_CH0;
- u8 dma_reg = (hwif->channel) ? ARTTIM2 : CFR;
- (void) pci_read_config_byte(dev, dma_reg, &dma_intr);
- /* clear the INTR bit */
- (void) pci_write_config_byte(dev, dma_reg, dma_intr|dma_mask);
- }
- /* purge DMA mappings */
- ide_destroy_dmatable(drive);
- /* verify good DMA status */
- return (dma_stat & 7) != 4;
+ (void) pci_read_config_byte(dev, irq_reg, &irq_stat);
+ /* clear the interrupt bit */
+ (void) pci_write_config_byte(dev, irq_reg, irq_stat | irq_mask);
+
+ return err;
+}
+
+static int cmd648_ide_dma_test_irq (ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
+ MRDMODE_INTR_CH0;
+ u8 dma_stat = inb(hwif->dma_status);
+ u8 mrdmode = inb(hwif->dma_master + 0x01);
+
+#ifdef DEBUG
+ printk("%s: dma_stat: 0x%02x mrdmode: 0x%02x irq_mask: 0x%02x\n",
+ drive->name, dma_stat, mrdmode, irq_mask);
+#endif
+ if (!(mrdmode & irq_mask))
+ return 0;
+
+ /* return 1 if INTR asserted */
+ if (dma_stat & 4)
+ return 1;
+
+ return 0;
}
static int cmd64x_ide_dma_test_irq (ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- u8 dma_alt_stat = 0, mask = (hwif->channel) ? MRDMODE_INTR_CH1 :
- MRDMODE_INTR_CH0;
- u8 dma_stat = inb(hwif->dma_status);
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;
+ int irq_reg = hwif->channel ? ARTTIM23 : CFR;
+ u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
+ CFR_INTR_CH0;
+ u8 dma_stat = inb(hwif->dma_status);
+ u8 irq_stat = 0;
+
+ (void) pci_read_config_byte(dev, irq_reg, &irq_stat);
- (void) pci_read_config_byte(dev, MRDMODE, &dma_alt_stat);
#ifdef DEBUG
- printk("%s: dma_stat: 0x%02x dma_alt_stat: "
- "0x%02x mask: 0x%02x\n", drive->name,
- dma_stat, dma_alt_stat, mask);
+ printk("%s: dma_stat: 0x%02x irq_stat: 0x%02x irq_mask: 0x%02x\n",
+ drive->name, dma_stat, irq_stat, irq_mask);
#endif
- if (!(dma_alt_stat & mask))
+ if (!(irq_stat & irq_mask))
return 0;
/* return 1 if INTR asserted */
- if ((dma_stat & 4) == 4)
+ if (dma_stat & 4)
return 1;
return 0;
(void) pci_write_config_byte(dev, UDIDETCR0, 0xf0);
#endif /* CONFIG_PPC */
-#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
cmd_devs[n_cmd_devs++] = dev;
cmd64x_proc = 1;
ide_pci_create_host_proc("cmd64x", cmd64x_get_info);
}
-#endif /* DISPLAY_CMD64X_TIMINGS && CONFIG_PROC_FS */
+#endif /* DISPLAY_CMD64X_TIMINGS && CONFIG_IDE_PROC_FS */
return 0;
}
hwif->atapi_dma = 1;
- hwif->ultra_mask = 0x3f;
- hwif->mwdma_mask = 0x07;
- hwif->swdma_mask = 0x07;
+ hwif->ultra_mask = hwif->cds->udma_mask;
+
+ /*
+ * UltraDMA only supported on PCI646U and PCI646U2, which
+ * correspond to revisions 0x03, 0x05 and 0x07 respectively.
+ * Actually, although the CMD tech support people won't
+ * tell me the details, the 0x03 revision cannot support
+ * UDMA correctly without hardware modifications, and even
+ * then it only works with Quantum disks due to some
+ * hold time assumptions in the 646U part which are fixed
+ * in the 646U2.
+ *
+ * So we only do UltraDMA on revision 0x05 and 0x07 chipsets.
+ */
+ if (dev->device == PCI_DEVICE_ID_CMD_646 && class_rev < 5)
+ hwif->ultra_mask = 0x00;
- if (dev->device == PCI_DEVICE_ID_CMD_643)
- hwif->ultra_mask = 0x80;
- if (dev->device == PCI_DEVICE_ID_CMD_646)
- hwif->ultra_mask = (class_rev > 0x04) ? 0x07 : 0x80;
- if (dev->device == PCI_DEVICE_ID_CMD_648)
- hwif->ultra_mask = 0x1f;
+ hwif->mwdma_mask = 0x07;
hwif->ide_dma_check = &cmd64x_config_drive_for_dma;
if (!(hwif->udma_four))
hwif->udma_four = ata66_cmd64x(hwif);
- if (dev->device == PCI_DEVICE_ID_CMD_646) {
+ switch(dev->device) {
+ case PCI_DEVICE_ID_CMD_648:
+ case PCI_DEVICE_ID_CMD_649:
+ alt_irq_bits:
+ hwif->ide_dma_end = &cmd648_ide_dma_end;
+ hwif->ide_dma_test_irq = &cmd648_ide_dma_test_irq;
+ break;
+ case PCI_DEVICE_ID_CMD_646:
hwif->chipset = ide_cmd646;
if (class_rev == 0x01) {
hwif->ide_dma_end = &cmd646_1_ide_dma_end;
- } else {
- hwif->ide_dma_end = &cmd64x_ide_dma_end;
- hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq;
- }
- } else {
- hwif->ide_dma_end = &cmd64x_ide_dma_end;
- hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq;
+ break;
+ } else if (class_rev >= 0x03)
+ goto alt_irq_bits;
+ /* fall thru */
+ default:
+ hwif->ide_dma_end = &cmd64x_ide_dma_end;
+ hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq;
+ break;
}
hwif->drives[1].autodma = hwif->autodma;
}
+static int __devinit init_setup_cmd64x(struct pci_dev *dev, ide_pci_device_t *d)
+{
+ return ide_setup_pci_device(dev, d);
+}
+
+static int __devinit init_setup_cmd646(struct pci_dev *dev, ide_pci_device_t *d)
+{
+ u8 rev = 0;
+
+ /*
+ * The original PCI0646 didn't have the primary channel enable bit,
+ * it appeared starting with PCI0646U (i.e. revision ID 3).
+ */
+ pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+ if (rev < 3)
+ d->enablebits[0].reg = 0;
+
+ return ide_setup_pci_device(dev, d);
+}
+
static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
{ /* 0 */
.name = "CMD643",
+ .init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x,
.channels = 2,
.autodma = AUTODMA,
+ .enablebits = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
.bootable = ON_BOARD,
+ .udma_mask = 0x00, /* no udma */
},{ /* 1 */
.name = "CMD646",
+ .init_setup = init_setup_cmd646,
.init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x,
.channels = 2,
.autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x51,0x80,0x80}},
+ .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD,
+ .udma_mask = 0x07, /* udma0-2 */
},{ /* 2 */
.name = "CMD648",
+ .init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x,
.channels = 2,
.autodma = AUTODMA,
+ .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD,
+ .udma_mask = 0x1f, /* udma0-4 */
},{ /* 3 */
.name = "CMD649",
+ .init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x,
.channels = 2,
.autodma = AUTODMA,
+ .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD,
+ .udma_mask = 0x3f, /* udma0-5 */
}
};
+/*
+ * We may have to modify enablebits for PCI0646, so we'd better pass
+ * a local copy of the ide_pci_device_t structure down the call chain...
+ */
static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
- return ide_setup_pci_device(dev, &cmd64x_chipsets[id->driver_data]);
+ ide_pci_device_t d = cmd64x_chipsets[id->driver_data];
+
+ return d.init_setup(dev, &d);
}
static struct pci_device_id cmd64x_pci_tbl[] = {
projects / linux-flexiantxendom0-3.2.10.git / blobdiff