diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c index d5cc96bb4298..6e85bee0bef7 100644 --- a/drivers/ide/ide-lib.c +++ b/drivers/ide/ide-lib.c @@ -249,6 +249,29 @@ static int ide_scan_pio_blacklist (char *model) return -1; } +unsigned int ide_pio_cycle_time(ide_drive_t *drive, u8 pio) +{ + struct hd_driveid *id = drive->id; + int cycle_time = 0; + + if (id->field_valid & 2) { + if (id->capability & 8) + cycle_time = id->eide_pio_iordy; + else + cycle_time = id->eide_pio; + } + + /* conservative "downgrade" for all pre-ATA2 drives */ + if (pio < 3) { + if (cycle_time && cycle_time < ide_pio_timings[pio].cycle_time) + cycle_time = 0; /* use standard timing */ + } + + return cycle_time ? cycle_time : ide_pio_timings[pio].cycle_time; +} + +EXPORT_SYMBOL_GPL(ide_pio_cycle_time); + /** * ide_get_best_pio_mode - get PIO mode from drive * @drive: drive to consider @@ -266,7 +289,6 @@ static int ide_scan_pio_blacklist (char *model) u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_pio_data_t *d) { int pio_mode; - int cycle_time = 0; struct hd_driveid* id = drive->id; int overridden = 0; @@ -284,7 +306,6 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_p } if (id->field_valid & 2) { /* drive implements ATA2? */ if (id->capability & 8) { /* IORDY supported? */ - cycle_time = id->eide_pio_iordy; if (id->eide_pio_modes & 7) { overridden = 0; if (id->eide_pio_modes & 4) @@ -294,8 +315,6 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_p else pio_mode = 3; } - } else { - cycle_time = id->eide_pio; } } @@ -310,18 +329,15 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_p pio_mode--; printk(KERN_INFO "%s: applying conservative " "PIO \"downgrade\"\n", drive->name); - if (cycle_time && cycle_time < ide_pio_timings[pio_mode].cycle_time) - cycle_time = 0; /* use standard timing */ } } - if (pio_mode > max_mode) { + + if (pio_mode > max_mode) pio_mode = max_mode; - cycle_time = 0; - } - if (d) { + + if (d) d->pio_mode = pio_mode; - d->cycle_time = cycle_time ? cycle_time : ide_pio_timings[pio_mode].cycle_time; - } + return pio_mode; } diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/legacy/ali14xx.c index df17ed68c0bc..30aeb8750c00 100644 --- a/drivers/ide/legacy/ali14xx.c +++ b/drivers/ide/legacy/ali14xx.c @@ -115,13 +115,12 @@ static void ali14xx_tune_drive (ide_drive_t *drive, u8 pio) int time1, time2; u8 param1, param2, param3, param4; unsigned long flags; - ide_pio_data_t d; int bus_speed = system_bus_clock(); - pio = ide_get_best_pio_mode(drive, pio, ALI_MAX_PIO, &d); + pio = ide_get_best_pio_mode(drive, pio, ALI_MAX_PIO, NULL); /* calculate timing, according to PIO mode */ - time1 = d.cycle_time; + time1 = ide_pio_cycle_time(drive, pio); time2 = ide_pio_timings[pio].active_time; param3 = param1 = (time2 * bus_speed + 999) / 1000; param4 = param2 = (time1 * bus_speed + 999) / 1000 - param1; diff --git a/drivers/ide/legacy/ht6560b.c b/drivers/ide/legacy/ht6560b.c index c8f353b1296f..85d16812d902 100644 --- a/drivers/ide/legacy/ht6560b.c +++ b/drivers/ide/legacy/ht6560b.c @@ -203,19 +203,21 @@ static u8 ht_pio2timings(ide_drive_t *drive, u8 pio) { int active_time, recovery_time; int active_cycles, recovery_cycles; - ide_pio_data_t d; int bus_speed = system_bus_clock(); if (pio) { - pio = ide_get_best_pio_mode(drive, pio, 5, &d); - + unsigned int cycle_time; + + pio = ide_get_best_pio_mode(drive, pio, 5, NULL); + cycle_time = ide_pio_cycle_time(drive, pio); + /* * Just like opti621.c we try to calculate the * actual cycle time for recovery and activity * according system bus speed. */ active_time = ide_pio_timings[pio].active_time; - recovery_time = d.cycle_time + recovery_time = cycle_time - active_time - ide_pio_timings[pio].setup_time; /* diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/legacy/qd65xx.c index 7783745dd167..233905b08e93 100644 --- a/drivers/ide/legacy/qd65xx.c +++ b/drivers/ide/legacy/qd65xx.c @@ -252,38 +252,38 @@ static void qd6500_tune_drive (ide_drive_t *drive, u8 pio) static void qd6580_tune_drive (ide_drive_t *drive, u8 pio) { - ide_pio_data_t d; int base = HWIF(drive)->select_data; + unsigned int cycle_time; int active_time = 175; int recovery_time = 415; /* worst case values from the dos driver */ if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) { - pio = ide_get_best_pio_mode(drive, pio, 4, &d); + pio = ide_get_best_pio_mode(drive, pio, 4, NULL); + cycle_time = ide_pio_cycle_time(drive, pio); switch (pio) { case 0: break; case 3: - if (d.cycle_time >= 110) { + if (cycle_time >= 110) { active_time = 86; - recovery_time = d.cycle_time - 102; + recovery_time = cycle_time - 102; } else printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name); break; case 4: - if (d.cycle_time >= 69) { + if (cycle_time >= 69) { active_time = 70; - recovery_time = d.cycle_time - 61; + recovery_time = cycle_time - 61; } else printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name); break; default: - if (d.cycle_time >= 180) { + if (cycle_time >= 180) { active_time = 110; - recovery_time = d.cycle_time - 120; + recovery_time = cycle_time - 120; } else { active_time = ide_pio_timings[pio].active_time; - recovery_time = d.cycle_time - -active_time; + recovery_time = cycle_time - active_time; } } printk(KERN_INFO "%s: PIO mode%d\n", drive->name,pio); diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c index dff21597e643..9f67ffc43421 100644 --- a/drivers/ide/pci/cmd640.c +++ b/drivers/ide/pci/cmd640.c @@ -633,9 +633,8 @@ static void cmd640_set_mode (unsigned int index, u8 pio_mode, unsigned int cycle */ static void cmd640_tune_drive (ide_drive_t *drive, u8 mode_wanted) { + unsigned int index = 0, cycle_time; u8 b; - ide_pio_data_t d; - unsigned int index = 0; while (drive != cmd_drives[index]) { if (++index > 3) { @@ -662,13 +661,12 @@ static void cmd640_tune_drive (ide_drive_t *drive, u8 mode_wanted) return; } - (void) ide_get_best_pio_mode (drive, mode_wanted, 5, &d); - cmd640_set_mode (index, d.pio_mode, d.cycle_time); + mode_wanted = ide_get_best_pio_mode(drive, mode_wanted, 5, NULL); + cycle_time = ide_pio_cycle_time(drive, mode_wanted); + cmd640_set_mode(index, mode_wanted, cycle_time); printk("%s: selected cmd640 PIO mode%d (%dns)", - drive->name, - d.pio_mode, - d.cycle_time); + drive->name, mode_wanted, cycle_time); display_clocks(index); } diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c index 8150a023dd7a..c383f6dc67dd 100644 --- a/drivers/ide/pci/cmd64x.c +++ b/drivers/ide/pci/cmd64x.c @@ -221,16 +221,18 @@ static u8 cmd64x_tune_pio (ide_drive_t *drive, u8 mode_wanted) { ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; - ide_pio_data_t pio; + unsigned int cycle_time; 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); + + pio_mode = ide_get_best_pio_mode(drive, mode_wanted, 5, NULL); + cycle_time = ide_pio_cycle_time(drive, pio_mode); cmdprintk("%s: PIO mode wanted %d, selected %d (%d ns)\n", - drive->name, mode_wanted, pio_mode, pio.cycle_time); + drive->name, mode_wanted, pio_mode, cycle_time); - program_cycle_times(drive, pio.cycle_time, + program_cycle_times(drive, cycle_time, ide_pio_timings[pio_mode].active_time); setup_count = quantize_timing(ide_pio_timings[pio_mode].setup_time, diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c index f4637d29aaf5..cc5f69b7514f 100644 --- a/drivers/ide/pci/sl82c105.c +++ b/drivers/ide/pci/sl82c105.c @@ -52,13 +52,13 @@ * Convert a PIO mode and cycle time to the required on/off times * for the interface. This has protection against runaway timings. */ -static unsigned int get_pio_timings(ide_drive_t *drive, ide_pio_data_t *p) +static unsigned int get_pio_timings(ide_drive_t *drive, u8 pio) { unsigned int cmd_on, cmd_off; u8 iordy = 0; - cmd_on = (ide_pio_timings[p->pio_mode].active_time + 29) / 30; - cmd_off = (p->cycle_time - 30 * cmd_on + 29) / 30; + cmd_on = (ide_pio_timings[pio].active_time + 29) / 30; + cmd_off = (ide_pio_cycle_time(drive, pio) - 30 * cmd_on + 29) / 30; if (cmd_on == 0) cmd_on = 1; @@ -66,7 +66,7 @@ static unsigned int get_pio_timings(ide_drive_t *drive, ide_pio_data_t *p) if (cmd_off == 0) cmd_off = 1; - if (p->pio_mode > 2 || ide_dev_has_iordy(drive->id)) + if (pio > 2 || ide_dev_has_iordy(drive->id)) iordy = 0x40; return (cmd_on - 1) << 8 | (cmd_off - 1) | iordy; @@ -79,14 +79,13 @@ static u8 sl82c105_tune_pio(ide_drive_t *drive, u8 pio) { struct pci_dev *dev = HWIF(drive)->pci_dev; int reg = 0x44 + drive->dn * 4; - ide_pio_data_t p; u16 drv_ctrl; DBG(("sl82c105_tune_pio(drive:%s, pio:%u)\n", drive->name, pio)); - pio = ide_get_best_pio_mode(drive, pio, 5, &p); + pio = ide_get_best_pio_mode(drive, pio, 5, NULL); - drv_ctrl = get_pio_timings(drive, &p); + drv_ctrl = get_pio_timings(drive, pio); /* * Store the PIO timings so that we can restore them @@ -105,7 +104,8 @@ static u8 sl82c105_tune_pio(ide_drive_t *drive, u8 pio) } printk(KERN_DEBUG "%s: selected %s (%dns) (%04X)\n", drive->name, - ide_xfer_verbose(pio + XFER_PIO_0), p.cycle_time, drv_ctrl); + ide_xfer_verbose(pio + XFER_PIO_0), + ide_pio_cycle_time(drive, pio), drv_ctrl); return pio; } diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c index e46f47206542..669330521fc1 100644 --- a/drivers/ide/ppc/pmac.c +++ b/drivers/ide/ppc/pmac.c @@ -615,24 +615,25 @@ pmac_ide_do_setfeature(ide_drive_t *drive, u8 command) static void pmac_ide_tuneproc(ide_drive_t *drive, u8 pio) { - ide_pio_data_t d; u32 *timings; unsigned accessTicks, recTicks; unsigned accessTime, recTime; pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)HWIF(drive)->hwif_data; - + unsigned int cycle_time; + if (pmif == NULL) return; /* which drive is it ? */ timings = &pmif->timings[drive->select.b.unit & 0x01]; - pio = ide_get_best_pio_mode(drive, pio, 4, &d); + pio = ide_get_best_pio_mode(drive, pio, 4, NULL); + cycle_time = ide_pio_cycle_time(drive, pio); switch (pmif->kind) { case controller_sh_ata6: { /* 133Mhz cell */ - u32 tr = kauai_lookup_timing(shasta_pio_timings, d.cycle_time); + u32 tr = kauai_lookup_timing(shasta_pio_timings, cycle_time); if (tr == 0) return; *timings = ((*timings) & ~TR_133_PIOREG_PIO_MASK) | tr; @@ -641,7 +642,7 @@ pmac_ide_tuneproc(ide_drive_t *drive, u8 pio) case controller_un_ata6: case controller_k2_ata6: { /* 100Mhz cell */ - u32 tr = kauai_lookup_timing(kauai_pio_timings, d.cycle_time); + u32 tr = kauai_lookup_timing(kauai_pio_timings, cycle_time); if (tr == 0) return; *timings = ((*timings) & ~TR_100_PIOREG_PIO_MASK) | tr; @@ -649,7 +650,7 @@ pmac_ide_tuneproc(ide_drive_t *drive, u8 pio) } case controller_kl_ata4: /* 66Mhz cell */ - recTime = d.cycle_time - ide_pio_timings[pio].active_time + recTime = cycle_time - ide_pio_timings[pio].active_time - ide_pio_timings[pio].setup_time; recTime = max(recTime, 150U); accessTime = ide_pio_timings[pio].active_time; @@ -665,7 +666,7 @@ pmac_ide_tuneproc(ide_drive_t *drive, u8 pio) default: { /* 33Mhz cell */ int ebit = 0; - recTime = d.cycle_time - ide_pio_timings[pio].active_time + recTime = cycle_time - ide_pio_timings[pio].active_time - ide_pio_timings[pio].setup_time; recTime = max(recTime, 150U); accessTime = ide_pio_timings[pio].active_time; diff --git a/include/linux/ide.h b/include/linux/ide.h index 498dc57627fa..0afa52c14ffa 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -1379,9 +1379,9 @@ typedef struct ide_pio_timings_s { typedef struct ide_pio_data_s { u8 pio_mode; - unsigned int cycle_time; } ide_pio_data_t; +unsigned int ide_pio_cycle_time(ide_drive_t *, u8); extern u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_pio_data_t *d); extern const ide_pio_timings_t ide_pio_timings[6];