diff options
Diffstat (limited to 'drivers/ide/pci/hpt366.c')
| -rw-r--r-- | drivers/ide/pci/hpt366.c | 851 |
1 files changed, 489 insertions, 362 deletions
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c index 9ad1531..4350e33 100644 --- a/drivers/ide/pci/hpt366.c +++ b/drivers/ide/pci/hpt366.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/hpt366.c Version 0.52 Jun 07, 2006 + * linux/drivers/ide/pci/hpt366.c Version 1.00 Jun 25, 2006 * * Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org> * Portions Copyright (C) 2001 Sun Microsystems, Inc. @@ -60,13 +60,10 @@ * channel caused the cached register value to get out of sync with the * actual one, the channels weren't serialized, the turnaround shouldn't * be done on 66 MHz PCI bus - * - avoid calibrating PLL twice as the second time results in a wrong PCI - * frequency and thus in the wrong timings for the secondary channel - * - disable UltraATA/133 for HPT372 and UltraATA/100 for HPT370 by default - * as the ATA clock being used does not allow for this speed anyway - * - add support for HPT302N and HPT371N clocking (the same as for HPT372N) - * - HPT371/N are single channel chips, so avoid touching the primary channel - * which exists only virtually (there's no pins for it) + * - disable UltraATA/100 for HPT370 by default as the 33 MHz clock being used + * does not allow for this speed anyway + * - avoid touching disabled channels (e.g. HPT371/N are single channel chips, + * their primary channel is kind of virtual, it isn't tied to any pins) * - fix/remove bad/unused timing tables and use one set of tables for the whole * HPT37x chip family; save space by introducing the separate transfer mode * table in which the mode lookup is done @@ -76,22 +73,44 @@ * and for HPT36x the obsolete HDIO_TRISTATE_HWIF handler was called instead * - pass to init_chipset() handlers a copy of the IDE PCI device structure as * they tamper with its fields + * - pass to the init_setup handlers a copy of the ide_pci_device_t structure + * since they may tamper with its fields * - prefix the driver startup messages with the real chip name * - claim the extra 240 bytes of I/O space for all chips * - optimize the rate masking/filtering and the drive list lookup code * - use pci_get_slot() to get to the function 1 of HPT36x/374 - * - cache the channel's MCRs' offset; only touch the relevant MCR when detecting - * the cable type on HPT374's function 1 + * - cache offset of the channel's misc. control registers (MCRs) being used + * throughout the driver + * - only touch the relevant MCR when detecting the cable type on HPT374's + * function 1 * - rename all the register related variables consistently - * - move the interrupt twiddling code from the speedproc handlers into the - * init_hwif handler, also grouping all the DMA related code together there; - * simplify the init_chipset handler - * - merge two HPT37x speedproc handlers and fix the PIO timing register mask - * there; make HPT36x speedproc handler look the same way as the HPT37x one - * - fix the tuneproc handler to always set the PIO mode requested, not the - * best possible one + * - move all the interrupt twiddling code from the speedproc handlers into + * init_hwif_hpt366(), also grouping all the DMA related code together there + * - merge two HPT37x speedproc handlers, fix the PIO timing register mask and + * separate the UltraDMA and MWDMA masks there to avoid changing PIO timings + * when setting an UltraDMA mode + * - fix hpt3xx_tune_drive() to set the PIO mode requested, not always select + * the best possible one * - clean up DMA timeout handling for HPT370 - * <source@mvista.com> + * - switch to using the enumeration type to differ between the numerous chip + * variants, matching PCI device/revision ID with the chip type early, at the + * init_setup stage + * - extend the hpt_info structure to hold the DPLL and PCI clock frequencies, + * stop duplicating it for each channel by storing the pointer in the pci_dev + * structure: first, at the init_setup stage, point it to a static "template" + * with only the chip type and its specific base DPLL frequency, the highest + * supported DMA mode, and the chip settings table pointer filled, then, at + * the init_chipset stage, allocate per-chip instance and fill it with the + * rest of the necessary information + * - get rid of the constant thresholds in the HPT37x PCI clock detection code, + * switch to calculating PCI clock frequency based on the chip's base DPLL + * frequency + * - switch to using the DPLL clock and enable UltraATA/133 mode by default on + * anything newer than HPT370/A + * - fold PCI clock detection and DPLL setup code into init_chipset_hpt366(); + * unify HPT36x/37x timing setup code and the speedproc handlers by joining + * the register setting lists into the table indexed by the clock selected + * Sergei Shtylyov, <sshtylyov@ru.mvista.com> or <source@mvista.com> */ #include <linux/types.h> @@ -345,71 +364,143 @@ static u32 sixty_six_base_hpt37x[] = { }; #define HPT366_DEBUG_DRIVE_INFO 0 -#define HPT374_ALLOW_ATA133_6 0 -#define HPT371_ALLOW_ATA133_6 0 -#define HPT302_ALLOW_ATA133_6 0 -#define HPT372_ALLOW_ATA133_6 0 +#define HPT374_ALLOW_ATA133_6 1 +#define HPT371_ALLOW_ATA133_6 1 +#define HPT302_ALLOW_ATA133_6 1 +#define HPT372_ALLOW_ATA133_6 1 #define HPT370_ALLOW_ATA100_5 0 #define HPT366_ALLOW_ATA66_4 1 #define HPT366_ALLOW_ATA66_3 1 #define HPT366_MAX_DEVS 8 -#define F_LOW_PCI_33 0x23 -#define F_LOW_PCI_40 0x29 -#define F_LOW_PCI_50 0x2d -#define F_LOW_PCI_66 0x42 +/* Supported ATA clock frequencies */ +enum ata_clock { + ATA_CLOCK_25MHZ, + ATA_CLOCK_33MHZ, + ATA_CLOCK_40MHZ, + ATA_CLOCK_50MHZ, + ATA_CLOCK_66MHZ, + NUM_ATA_CLOCKS +}; /* - * Hold all the highpoint quirks and revision information in one - * place. + * Hold all the HighPoint chip information in one place. */ -struct hpt_info -{ +struct hpt_info { + u8 chip_type; /* Chip type */ u8 max_mode; /* Speeds allowed */ - u8 revision; /* Chipset revision */ - u8 flags; /* Chipset properties */ -#define PLL_MODE 1 -#define IS_3xxN 2 -#define PCI_66MHZ 4 - /* Speed table */ - u32 *speed; + u8 dpll_clk; /* DPLL clock in MHz */ + u8 pci_clk; /* PCI clock in MHz */ + u32 **settings; /* Chipset settings table */ }; -/* - * This wants fixing so that we do everything not by revision - * (which breaks on the newest chips) but by creating an - * enumeration of chip variants and using that - */ +/* Supported HighPoint chips */ +enum { + HPT36x, + HPT370, + HPT370A, + HPT374, + HPT372, + HPT372A, + HPT302, + HPT371, + HPT372N, + HPT302N, + HPT371N +}; -static __devinit u8 hpt_revision(struct pci_dev *dev) -{ - u8 rev = 0; +static u32 *hpt36x_settings[NUM_ATA_CLOCKS] = { + twenty_five_base_hpt36x, + thirty_three_base_hpt36x, + forty_base_hpt36x, + NULL, + NULL +}; - pci_read_config_byte(dev, PCI_REVISION_ID, &rev); +static u32 *hpt37x_settings[NUM_ATA_CLOCKS] = { + NULL, + thirty_three_base_hpt37x, + NULL, + fifty_base_hpt37x, + sixty_six_base_hpt37x +}; - switch(dev->device) { - /* Remap new 372N onto 372 */ - case PCI_DEVICE_ID_TTI_HPT372N: - rev = PCI_DEVICE_ID_TTI_HPT372; - break; - case PCI_DEVICE_ID_TTI_HPT374: - rev = PCI_DEVICE_ID_TTI_HPT374; - break; - case PCI_DEVICE_ID_TTI_HPT371: - rev = PCI_DEVICE_ID_TTI_HPT371; - break; - case PCI_DEVICE_ID_TTI_HPT302: - rev = PCI_DEVICE_ID_TTI_HPT302; - break; - case PCI_DEVICE_ID_TTI_HPT372: - rev = PCI_DEVICE_ID_TTI_HPT372; - break; - default: - break; - } - return rev; -} +static struct hpt_info hpt36x __devinitdata = { + .chip_type = HPT36x, + .max_mode = (HPT366_ALLOW_ATA66_4 || HPT366_ALLOW_ATA66_3) ? 2 : 1, + .dpll_clk = 0, /* no DPLL */ + .settings = hpt36x_settings +}; + +static struct hpt_info hpt370 __devinitdata = { + .chip_type = HPT370, + .max_mode = HPT370_ALLOW_ATA100_5 ? 3 : 2, + .dpll_clk = 48, + .settings = hpt37x_settings +}; + +static struct hpt_info hpt370a __devinitdata = { + .chip_type = HPT370A, + .max_mode = HPT370_ALLOW_ATA100_5 ? 3 : 2, + .dpll_clk = 48, + .settings = hpt37x_settings +}; + +static struct hpt_info hpt374 __devinitdata = { + .chip_type = HPT374, + .max_mode = HPT374_ALLOW_ATA133_6 ? 4 : 3, + .dpll_clk = 48, + .settings = hpt37x_settings +}; + +static struct hpt_info hpt372 __devinitdata = { + .chip_type = HPT372, + .max_mode = HPT372_ALLOW_ATA133_6 ? 4 : 3, + .dpll_clk = 55, + .settings = hpt37x_settings +}; + +static struct hpt_info hpt372a __devinitdata = { + .chip_type = HPT372A, + .max_mode = HPT372_ALLOW_ATA133_6 ? 4 : 3, + .dpll_clk = 66, + .settings = hpt37x_settings +}; + +static struct hpt_info hpt302 __devinitdata = { + .chip_type = HPT302, + .max_mode = HPT302_ALLOW_ATA133_6 ? 4 : 3, + .dpll_clk = 66, + .settings = hpt37x_settings +}; + +static struct hpt_info hpt371 __devinitdata = { + .chip_type = HPT371, + .max_mode = HPT371_ALLOW_ATA133_6 ? 4 : 3, + .dpll_clk = 66, + .settings = hpt37x_settings +}; + +static struct hpt_info hpt372n __devinitdata = { + .chip_type = HPT372N, + .max_mode = HPT372_ALLOW_ATA133_6 ? 4 : 3, + .dpll_clk = 77, + .settings = hpt37x_settings +}; + +static struct hpt_info hpt302n __devinitdata = { + .chip_type = HPT302N, + .max_mode = HPT302_ALLOW_ATA133_6 ? 4 : 3, + .dpll_clk = 77, +}; + +static struct hpt_info hpt371n __devinitdata = { + .chip_type = HPT371N, + .max_mode = HPT371_ALLOW_ATA133_6 ? 4 : 3, + .dpll_clk = 77, + .settings = hpt37x_settings +}; static int check_in_drive_list(ide_drive_t *drive, const char **list) { @@ -423,7 +514,7 @@ static int check_in_drive_list(ide_drive_t *drive, const char **list) static u8 hpt3xx_ratemask(ide_drive_t *drive) { - struct hpt_info *info = ide_get_hwifdata(HWIF(drive)); + struct hpt_info *info = pci_get_drvdata(HWIF(drive)->pci_dev); u8 mode = info->max_mode; if (!eighty_ninty_three(drive) && mode) @@ -438,7 +529,8 @@ static u8 hpt3xx_ratemask(ide_drive_t *drive) static u8 hpt3xx_ratefilter(ide_drive_t *drive, u8 speed) { - struct hpt_info *info = ide_get_hwifdata(HWIF(drive)); + struct hpt_info *info = pci_get_drvdata(HWIF(drive)->pci_dev); + u8 chip_type = info->chip_type; u8 mode = hpt3xx_ratemask(drive); if (drive->media != ide_disk) @@ -446,21 +538,22 @@ static u8 hpt3xx_ratefilter(ide_drive_t *drive, u8 speed) switch (mode) { case 0x04: - speed = min(speed, (u8)XFER_UDMA_6); + speed = min_t(u8, speed, XFER_UDMA_6); break; case 0x03: - speed = min(speed, (u8)XFER_UDMA_5); - if (info->revision >= 5) + speed = min_t(u8, speed, XFER_UDMA_5); + if (chip_type >= HPT374) break; if (!check_in_drive_list(drive, bad_ata100_5)) goto check_bad_ata33; /* fall thru */ case 0x02: speed = min_t(u8, speed, XFER_UDMA_4); - /* - * CHECK ME, Does this need to be set to 5 ?? - */ - if (info->revision >= 3) + + /* + * CHECK ME, Does this need to be changed to HPT374 ?? + */ + if (chip_type >= HPT370) goto check_bad_ata33; if (HPT366_ALLOW_ATA66_4 && !check_in_drive_list(drive, bad_ata66_4)) @@ -475,7 +568,7 @@ static u8 hpt3xx_ratefilter(ide_drive_t *drive, u8 speed) speed = min_t(u8, speed, XFER_UDMA_2); check_bad_ata33: - if (info->revision >= 4) + if (chip_type >= HPT370A) break; if (!check_in_drive_list(drive, bad_ata33)) break; @@ -488,7 +581,7 @@ static u8 hpt3xx_ratefilter(ide_drive_t *drive, u8 speed) return speed; } -static u32 pci_bus_clock_list(u8 speed, u32 *chipset_table) +static u32 get_speed_setting(u8 speed, struct hpt_info *info) { int i; @@ -501,18 +594,23 @@ static u32 pci_bus_clock_list(u8 speed, u32 *chipset_table) for (i = 0; i < ARRAY_SIZE(xfer_speeds) - 1; i++) if (xfer_speeds[i] == speed) break; - return chipset_table[i]; + /* + * NOTE: info->settings only points to the pointer + * to the list of the actual register values + */ + return (*info->settings)[i]; } static int hpt36x_tune_chipset(ide_drive_t *drive, u8 xferspeed) { ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; - struct hpt_info *info = ide_get_hwifdata (hwif); + struct hpt_info *info = pci_get_drvdata(dev); u8 speed = hpt3xx_ratefilter(drive, xferspeed); u8 itr_addr = drive->dn ? 0x44 : 0x40; - u32 itr_mask = (speed < XFER_MW_DMA_0) ? 0x30070000 : 0xc0000000; - u32 new_itr = pci_bus_clock_list(speed, info->speed); + u32 itr_mask = speed < XFER_MW_DMA_0 ? 0x30070000 : + (speed < XFER_UDMA_0 ? 0xc0070000 : 0xc03800ff); + u32 new_itr = get_speed_setting(speed, info); u32 old_itr = 0; /* @@ -532,11 +630,12 @@ static int hpt37x_tune_chipset(ide_drive_t *drive, u8 xferspeed) { ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; - struct hpt_info *info = ide_get_hwifdata (hwif); + struct hpt_info *info = pci_get_drvdata(dev); u8 speed = hpt3xx_ratefilter(drive, xferspeed); u8 itr_addr = 0x40 + (drive->dn * 4); - u32 itr_mask = (speed < XFER_MW_DMA_0) ? 0x303c0000 : 0xc0000000; - u32 new_itr = pci_bus_clock_list(speed, info->speed); + u32 itr_mask = speed < XFER_MW_DMA_0 ? 0x303c0000 : + (speed < XFER_UDMA_0 ? 0xc03c0000 : 0xc1c001ff); + u32 new_itr = get_speed_setting(speed, info); u32 old_itr = 0; pci_read_config_dword(dev, itr_addr, &old_itr); @@ -552,9 +651,9 @@ static int hpt37x_tune_chipset(ide_drive_t *drive, u8 xferspeed) static int hpt3xx_tune_chipset(ide_drive_t *drive, u8 speed) { ide_hwif_t *hwif = HWIF(drive); - struct hpt_info *info = ide_get_hwifdata(hwif); + struct hpt_info *info = pci_get_drvdata(hwif->pci_dev); - if (info->revision >= 3) + if (info->chip_type >= HPT370) return hpt37x_tune_chipset(drive, speed); else /* hpt368: hpt_minimum_revision(dev, 2) */ return hpt36x_tune_chipset(drive, speed); @@ -576,16 +675,10 @@ static void hpt3xx_tune_drive(ide_drive_t *drive, u8 pio) static int config_chipset_for_dma(ide_drive_t *drive) { u8 speed = ide_dma_speed(drive, hpt3xx_ratemask(drive)); - ide_hwif_t *hwif = HWIF(drive); - struct hpt_info *info = ide_get_hwifdata(hwif); if (!speed) return 0; - /* If we don't have any timings we can't do a lot */ - if (info->speed == NULL) - return 0; - (void) hpt3xx_tune_chipset(drive, speed); return ide_dma_enable(drive); } @@ -615,10 +708,10 @@ static void hpt3xx_maskproc(ide_drive_t *drive, int mask) { ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; - struct hpt_info *info = ide_get_hwifdata(hwif); + struct hpt_info *info = pci_get_drvdata(dev); if (drive->quirk_list) { - if (info->revision >= 3) { + if (info->chip_type >= HPT370) { u8 scr1 = 0; pci_read_config_byte(dev, 0x5a, &scr1); @@ -778,40 +871,37 @@ static int hpt374_ide_dma_end(ide_drive_t *drive) * @mode: clocking mode (0x21 for write, 0x23 otherwise) * * Switch the DPLL clock on the HPT3xxN devices. This is a right mess. - * NOTE: avoid touching the disabled primary channel on HPT371N -- it - * doesn't physically exist anyway... */ static void hpt3xxn_set_clock(ide_hwif_t *hwif, u8 mode) { - u8 mcr1, scr2 = hwif->INB(hwif->dma_master + 0x7b); + u8 scr2 = hwif->INB(hwif->dma_master + 0x7b); if ((scr2 & 0x7f) == mode) return; - /* MISC. control register 1 has the channel enable bit... */ - mcr1 = hwif->INB(hwif->dma_master + 0x70); - /* Tristate the bus */ - if (mcr1 & 0x04) - hwif->OUTB(0x80, hwif->dma_master + 0x73); + hwif->OUTB(0x80, hwif->dma_master + 0x73); hwif->OUTB(0x80, hwif->dma_master + 0x77); /* Switch clock and reset channels */ hwif->OUTB(mode, hwif->dma_master + 0x7b); hwif->OUTB(0xc0, hwif->dma_master + 0x79); - /* Reset state machines */ - if (mcr1 & 0x04) - hwif->OUTB(0x37, hwif->dma_master + 0x70); - hwif->OUTB(0x37, hwif->dma_master + 0x74); + /* + * Reset the state machines. + * NOTE: avoid accidentally enabling the disabled channels. + */ + hwif->OUTB(hwif->INB(hwif->dma_master + 0x70) | 0x32, + hwif->dma_master + 0x70); + hwif->OUTB(hwif->INB(hwif->dma_master + 0x74) | 0x32, + hwif->dma_master + 0x74); /* Complete reset */ hwif->OUTB(0x00, hwif->dma_master + 0x79); /* Reconnect channels to bus */ - if (mcr1 & 0x04) - hwif->OUTB(0x00, hwif->dma_master + 0x73); + hwif->OUTB(0x00, hwif->dma_master + 0x73); hwif->OUTB(0x00, hwif->dma_master + 0x77); } @@ -826,10 +916,7 @@ static void hpt3xxn_set_clock(ide_hwif_t *hwif, u8 mode) static void hpt3xxn_rw_disk(ide_drive_t *drive, struct request *rq) { - ide_hwif_t *hwif = HWIF(drive); - u8 wantclock = rq_data_dir(rq) ? 0x23 : 0x21; - - hpt3xxn_set_clock(hwif, wantclock); + hpt3xxn_set_clock(HWIF(drive), rq_data_dir(rq) ? 0x23 : 0x21); } /* @@ -890,223 +977,293 @@ static int hpt3xx_busproc(ide_drive_t *drive, int state) return 0; } -static void __devinit hpt366_clocking(ide_hwif_t *hwif) +/** + * hpt37x_calibrate_dpll - calibrate the DPLL + * @dev: PCI device + * + * Perform a calibration cycle on the DPLL. + * Returns 1 if this succeeds + */ +static int __devinit hpt37x_calibrate_dpll(struct pci_dev *dev, u16 f_low, u16 f_high) { - u32 itr1 = 0; - struct hpt_info *info = ide_get_hwifdata(hwif); + u32 dpll = (f_high << 16) | f_low | 0x100; + u8 scr2; + int i; - pci_read_config_dword(hwif->pci_dev, 0x40, &itr1); + pci_write_config_dword(dev, 0x5c, dpll); - /* detect bus speed by looking at control reg timing: */ - switch((itr1 >> 8) & 7) { - case 5: - info->speed = forty_base_hpt36x; - break; - case 9: - info->speed = twenty_five_base_hpt36x; - break; - case 7: - default: - info->speed = thirty_three_base_hpt36x; + /* Wait for oscillator ready */ + for(i = 0; i < 0x5000; ++i) { + udelay(50); + pci_read_config_byte(dev, 0x5b, &scr2); + if (scr2 & 0x80) break; } + /* See if it stays ready (we'll just bail out if it's not yet) */ + for(i = 0; i < 0x1000; ++i) { + pci_read_config_byte(dev, 0x5b, &scr2); + /* DPLL destabilized? */ + if(!(scr2 & 0x80)) + return 0; + } + /* Turn off tuning, we have the DPLL set */ + pci_read_config_dword (dev, 0x5c, &dpll); + pci_write_config_dword(dev, 0x5c, (dpll & ~0x100)); + return 1; } -static void __devinit hpt37x_clocking(ide_hwif_t *hwif) +static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const char *name) { - struct hpt_info *info = ide_get_hwifdata(hwif); - struct pci_dev *dev = hwif->pci_dev; - char *name = hwif->cds->name; - int adjust, i; - u16 freq = 0; - u32 pll, temp = 0; - u8 scr2 = 0, mcr1 = 0; - + struct hpt_info *info = kmalloc(sizeof(struct hpt_info), GFP_KERNEL); + unsigned long io_base = pci_resource_start(dev, 4); + u8 pci_clk, dpll_clk = 0; /* PCI and DPLL clock in MHz */ + enum ata_clock clock; + + if (info == NULL) { + printk(KERN_ERR "%s: out of memory!\n", name); + return -ENOMEM; + } + /* - * default to pci clock. make sure MA15/16 are set to output - * to prevent drives having problems with 40-pin cables. Needed - * for some drives such as IBM-DTLA which will not enter ready - * state on reset when PDIAG is a input. - * - * ToDo: should we set 0x21 when using PLL mode ? + * Copy everything from a static "template" structure + * to just allocated per-chip hpt_info structure. */ - pci_write_config_byte(dev, 0x5b, 0x23); + *info = *(struct hpt_info *)pci_get_drvdata(dev); /* - * We'll have to read f_CNT value in order to determine - * the PCI clock frequency according to the following ratio: - * - * f_CNT = Fpci * 192 / Fdpll - * - * First try reading the register in which the HighPoint BIOS - * saves f_CNT value before reprogramming the DPLL from its - * default setting (which differs for the various chips). - * NOTE: This register is only accessible via I/O space. - * - * In case the signature check fails, we'll have to resort to - * reading the f_CNT register itself in hopes that nobody has - * touched the DPLL yet... + * FIXME: Not portable. Also, why do we enable the ROM in the first place? + * We don't seem to be using it. */ - temp = inl(pci_resource_start(dev, 4) + 0x90); - if ((temp & 0xFFFFF000) != 0xABCDE000) { - printk(KERN_WARNING "%s: no clock data saved by BIOS\n", name); - - /* Calculate the average value of f_CNT */ - for (temp = i = 0; i < 128; i++) { - pci_read_config_word(dev, 0x78, &freq); - temp += freq & 0x1ff; - mdelay(1); - } - freq = temp / 128; - } else - freq = temp & 0x1ff; + if (dev->resource[PCI_ROM_RESOURCE].start) + pci_write_config_dword(dev, PCI_ROM_ADDRESS, + dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE); + + pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); + pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); + pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); + pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); /* - * HPT3xxN chips use different PCI clock information. - * Currently we always set up the PLL for them. + * First, try to estimate the PCI clock frequency... */ + if (info->chip_type >= HPT370) { + u8 scr1 = 0; + u16 f_cnt = 0; + u32 temp = 0; + + /* Interrupt force enable. */ + pci_read_config_byte(dev, 0x5a, &scr1); + if (scr1 & 0x10) + pci_write_config_byte(dev, 0x5a, scr1 & ~0x10); + + /* + * HighPoint does this for HPT372A. + * NOTE: This register is only writeable via I/O space. + */ + if (info->chip_type == HPT372A) + outb(0x0e, io_base + 0x9c); + + /* + * Default to PCI clock. Make sure MA15/16 are set to output + * to prevent drives having problems with 40-pin cables. + */ + pci_write_config_byte(dev, 0x5b, 0x23); - if (info->flags & IS_3xxN) { - if(freq < 0x55) - pll = F_LOW_PCI_33; - else if(freq < 0x70) - pll = F_LOW_PCI_40; - else if(freq < 0x7F) - pll = F_LOW_PCI_50; + /* + * We'll have to read f_CNT value in order to determine + * the PCI clock frequency according to the following ratio: + * + * f_CNT = Fpci * 192 / Fdpll + * + * First try reading the register in which the HighPoint BIOS + * saves f_CNT value before reprogramming the DPLL from its + * default setting (which differs for the various chips). + * NOTE: This register is only accessible via I/O space. + * + * In case the signature check fails, we'll have to resort to + * reading the f_CNT register itself in hopes that nobody has + * touched the DPLL yet... + */ + temp = inl(io_base + 0x90); + if ((temp & 0xFFFFF000) != 0xABCDE000) { + int i; + + printk(KERN_WARNING "%s: no clock data saved by BIOS\n", + name); + + /* Calculate the average value of f_CNT. */ + for (temp = i = 0; i < 128; i++) { + pci_read_config_word(dev, 0x78, &f_cnt); + temp += f_cnt & 0x1ff; + mdelay(1); + } + f_cnt = temp / 128; + } else + f_cnt = temp & 0x1ff; + + dpll_clk = info->dpll_clk; + pci_clk = (f_cnt * dpll_clk) / 192; + + /* Clamp PCI clock to bands. */ + if (pci_clk < 40) + pci_clk = 33; + else if(pci_clk < 45) + pci_clk = 40; + else if(pci_clk < 55) + pci_clk = 50; else - pll = F_LOW_PCI_66; + pci_clk = 66; + printk(KERN_INFO "%s: DPLL base: %d MHz, f_CNT: %d, " + "assuming %d MHz PCI\n", name, dpll_clk, f_cnt, pci_clk); } else { - if(freq < 0x9C) - pll = F_LOW_PCI_33; - else if(freq < 0xb0) - pll = F_LOW_PCI_40; - else if(freq <0xc8) - pll = F_LOW_PCI_50; - else - pll = F_LOW_PCI_66; - } - printk(KERN_INFO "%s: FREQ: %d, PLL: %d\n", name, freq, pll); - - if (!(info->flags & IS_3xxN)) { - if (pll == F_LOW_PCI_33) { - info->speed = thirty_three_base_hpt37x; - printk(KERN_DEBUG "%s: using 33MHz PCI clock\n", name); - } else if (pll == F_LOW_PCI_40) { - /* Unsupported */ - } else if (pll == F_LOW_PCI_50) { - info->speed = fifty_base_hpt37x; - printk(KERN_DEBUG "%s: using 50MHz PCI clock\n", name); - } else { - info->speed = sixty_six_base_hpt37x; - printk(KERN_DEBUG "%s: using 66MHz PCI clock\n", name); + u32 itr1 = 0; + + pci_read_config_dword(dev, 0x40, &itr1); + + /* Detect PCI clock by looking at cmd_high_time. */ + switch((itr1 >> 8) & 0x07) { + case 0x09: + pci_clk = 40; + case 0x05: + pci_clk = 25; + case 0x07: + default: + pci_clk = 33; } } - if (pll == F_LOW_PCI_66) - info->flags |= PCI_66MHZ; + /* Let's assume we'll use PCI clock for the ATA clock... */ + switch (pci_clk) { + case 25: + clock = ATA_CLOCK_25MHZ; + break; + case 33: + default: + clock = ATA_CLOCK_33MHZ; + break; + case 40: + clock = ATA_CLOCK_40MHZ; + break; + case 50: + clock = ATA_CLOCK_50MHZ; + break; + case 66: + clock = ATA_CLOCK_66MHZ; + break; + } /* - * only try the pll if we don't have a table for the clock - * speed that we're running at. NOTE: the internal PLL will - * result in slow reads when using a 33MHz PCI clock. we also - * don't like to use the PLL because it will cause glitches - * on PRST/SRST when the HPT state engine gets reset. + * Only try the DPLL if we don't have a table for the PCI clock that + * we are running at for HPT370/A, always use it for anything newer... * - * ToDo: Use 66MHz PLL when ATA133 devices are present on a - * 372 device so we can get ATA133 support + * NOTE: Using the internal DPLL results in slow reads on 33 MHz PCI. + * We also don't like using the DPLL because this causes glitches + * on PRST-/SRST- when the state engine gets reset... */ - if (info->speed) - goto init_hpt37X_done; + if (info->chip_type >= HPT374 || info->settings[clock] == NULL) { + u16 f_low, delta = pci_clk < 50 ? 2 : 4; + int adjust; + + /* + * Select 66 MHz DPLL clock only if UltraATA/133 mode is + * supported/enabled, use 50 MHz DPLL clock otherwise... + */ + if (info->max_mode == 0x04) { + dpll_clk = 66; + clock = ATA_CLOCK_66MHZ; + } else if (dpll_clk) { /* HPT36x chips don't have DPLL */ + dpll_clk = 50; + clock = ATA_CLOCK_50MHZ; + } - info->flags |= PLL_MODE; - - /* - * Adjust the PLL based upon the PCI clock, enable it, and - * wait for stabilization... - */ - adjust = 0; - freq = (pll < F_LOW_PCI_50) ? 2 : 4; - while (adjust++ < 6) { - pci_write_config_dword(dev, 0x5c, (freq + pll) << 16 | - pll | 0x100); - - /* wait for clock stabilization */ - for (i = 0; i < 0x50000; i++) { - pci_read_config_byte(dev, 0x5b, &scr2); - if (scr2 & 0x80) { - /* spin looking for the clock to destabilize */ - for (i = 0; i < 0x1000; ++i) { - pci_read_config_byte(dev, 0x5b, - &scr2); - if ((scr2 & 0x80) == 0) - goto pll_recal; - } - pci_read_config_dword(dev, 0x5c, &pll); - pci_write_config_dword(dev, 0x5c, - pll & ~0x100); - pci_write_config_byte(dev, 0x5b, 0x21); - - info->speed = fifty_base_hpt37x; - printk("%s: using 50MHz internal PLL\n", name); - goto init_hpt37X_done; - } + if (info->settings[clock] == NULL) { + printk(KERN_ERR "%s: unknown bus timing!\n", name); + kfree(info); + return -EIO; } -pll_recal: - if (adjust & 1) - pll -= (adjust >> 1); - else - pll += (adjust >> 1); - } -init_hpt37X_done: - if (!info->speed) - printk(KERN_ERR "%s: unknown bus timing [%d %d].\n", - name, pll, freq); - /* - * Reset the state engines. - * NOTE: avoid accidentally enabling the primary channel on HPT371N. - */ - pci_read_config_byte(dev, 0x50, &mcr1); - if (mcr1 & 0x04) - pci_write_config_byte(dev, 0x50, 0x37); - pci_write_config_byte(dev, 0x54, 0x37); - udelay(100); -} + /* Select the DPLL clock. */ + pci_write_config_byte(dev, 0x5b, 0x21); + + /* + * Adjust the DPLL based upon PCI clock, enable it, + * and wait for stabilization... + */ + f_low = (pci_clk * 48) / dpll_clk; + + for (adjust = 0; adjust < 8; adjust++) { + if(hpt37x_calibrate_dpll(dev, f_low, f_low + delta)) + break; + + /* + * See if it'll settle at a fractionally different clock + */ + if (adjust & 1) + f_low -= adjust >> 1; + else + f_low += adjust >> 1; + } + if (adjust == 8) { + printk(KERN_ERR "%s: DPLL did not stabilize!\n", name); + kfree(info); + return -EIO; + } + + printk("%s: using %d MHz DPLL clock\n", name, dpll_clk); + } else { + /* Mark the fact that we're not using the DPLL. */ + dpll_clk = 0; + + printk("%s: using %d MHz PCI clock\n", name, pci_clk); + } -static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const char *name) -{ /* - * FIXME: Not portable. Also, why do we enable the ROM in the first place? - * We don't seem to be using it. + * Advance the table pointer to a slot which points to the list + * of the register values settings matching the clock being used. */ - if (dev->resource[PCI_ROM_RESOURCE].start) - pci_write_config_dword(dev, PCI_ROM_ADDRESS, - dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE); + info->settings += clock; - pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); - pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); - pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); - pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); + /* Store the clock frequencies. */ + info->dpll_clk = dpll_clk; + info->pci_clk = pci_clk; - if (hpt_revision(dev) >= 3) { - u8 scr1 = 0; + /* Point to this chip's own instance of the hpt_info structure. */ + pci_set_drvdata(dev, info); - /* Interrupt force enable. */ - pci_read_config_byte(dev, 0x5a, &scr1); - if (scr1 & 0x10) - pci_write_config_byte(dev, 0x5a, scr1 & ~0x10); + if (info->chip_type >= HPT370) { + u8 mcr1, mcr4; + + /* + * Reset the state engines. + * NOTE: Avoid accidentally enabling the disabled channels. + */ + pci_read_config_byte (dev, 0x50, &mcr1); + pci_read_config_byte (dev, 0x54, &mcr4); + pci_write_config_byte(dev, 0x50, (mcr1 | 0x32)); + pci_write_config_byte(dev, 0x54, (mcr4 | 0x32)); + udelay(100); } + /* + * On HPT371N, if ATA clock is 66 MHz we must set bit 2 in + * the MISC. register to stretch the UltraDMA Tss timing. + * NOTE: This register is only writeable via I/O space. + */ + if (info->chip_type == HPT371N && clock == ATA_CLOCK_66MHZ) + + outb(inb(io_base + 0x9c) | 0x04, io_base + 0x9c); + return dev->irq; } static void __devinit init_hwif_hpt366(ide_hwif_t *hwif) { struct pci_dev *dev = hwif->pci_dev; - struct hpt_info *info = ide_get_hwifdata(hwif); + struct hpt_info *info = pci_get_drvdata(dev); int serialize = HPT_SERIALIZE_IO; u8 scr1 = 0, ata66 = (hwif->channel) ? 0x01 : 0x02; + u8 chip_type = info->chip_type; u8 new_mcr, old_mcr = 0; /* Cache the channel's MISC. control registers' offset */ @@ -1125,7 +1282,7 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif) * - on 33 MHz PCI we must clock switch * - on 66 MHz PCI we must NOT use the PCI clock */ - if ((info->flags & (IS_3xxN | PCI_66MHZ)) == IS_3xxN) { + if (chip_type >= HPT372N && info->dpll_clk && info->pci_clk < 66) { /* * Clock is shared between the channels, * so we'll have to serialize them... :-( @@ -1144,9 +1301,9 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif) */ pci_read_config_byte(dev, hwif->select_data + 1, &old_mcr); - if (info->revision >= 5) /* HPT372 and newer */ + if (info->chip_type >= HPT374) new_mcr = old_mcr & ~0x07; - else if (info->revision >= 3) { /* HPT370 and HPT370A */ + else if (info->chip_type >= HPT370) { new_mcr = old_mcr; new_mcr &= ~0x02; @@ -1174,7 +1331,7 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif) * address lines to access an external EEPROM. To read valid * cable detect state the pins must be enabled as inputs. */ - if (info->revision >= 8 && (PCI_FUNC(dev->devfn) & 1)) { + if (chip_type == HPT374 && (PCI_FUNC(dev->devfn) & 1)) { /* * HPT374 PCI function 1 * - set bit 15 of reg 0x52 to enable TCBLID as input @@ -1188,7 +1345,7 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif) /* now read cable id register */ pci_read_config_byte (dev, 0x5a, &scr1); pci_write_config_word(dev, mcr_addr, mcr); - } else if (info->revision >= 3) { + } else if (chip_type >= HPT370) { /* * HPT370/372 and 374 pcifn 0 * - clear bit 0 of reg 0x5b to enable P/SCBLID as inputs @@ -1208,10 +1365,10 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif) hwif->ide_dma_check = &hpt366_config_drive_xfer_rate; - if (info->revision >= 5) { + if (chip_type >= HPT374) { hwif->ide_dma_test_irq = &hpt374_ide_dma_test_irq; hwif->ide_dma_end = &hpt374_ide_dma_end; - } else if (info->revision >= 3) { + } else if (chip_type >= HPT370) { hwif->dma_start = &hpt370_ide_dma_start; hwif->ide_dma_end = &hpt370_ide_dma_end; hwif->ide_dma_timeout = &hpt370_ide_dma_timeout; @@ -1226,7 +1383,6 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif) static void __devinit init_dma_hpt366(ide_hwif_t *hwif, unsigned long dmabase) { struct pci_dev *dev = hwif->pci_dev; - struct hpt_info *info = ide_get_hwifdata(hwif); u8 masterdma = 0, slavedma = 0; u8 dma_new = 0, dma_old = 0; unsigned long flags; @@ -1234,12 +1390,6 @@ static void __devinit init_dma_hpt366(ide_hwif_t *hwif, unsigned long dmabase) if (!dmabase) return; - if(info->speed == NULL) { - printk(KERN_WARNING "%s: no known IDE timings, disabling DMA.\n", - hwif->cds->name); - return; - } - dma_old = hwif->INB(dmabase + 2); local_irq_save(flags); @@ -1258,60 +1408,6 @@ static void __devinit init_dma_hpt366(ide_hwif_t *hwif, unsigned long dmabase) ide_setup_dma(hwif, dmabase, 8); } -/* - * We "borrow" this hook in order to set the data structures - * up early enough before dma or init_hwif calls are made. - */ - -static void __devinit init_iops_hpt366(ide_hwif_t *hwif) -{ - struct hpt_info *info = kzalloc(sizeof(struct hpt_info), GFP_KERNEL); - struct pci_dev *dev = hwif->pci_dev; - u16 did = dev->device; - u8 mode, rid = 0; - - if(info == NULL) { - printk(KERN_WARNING "%s: out of memory.\n", hwif->cds->name); - return; - } - ide_set_hwifdata(hwif, info); - - /* Avoid doing the same thing twice. */ - if (hwif->channel && hwif->mate) { - memcpy(info, ide_get_hwifdata(hwif->mate), sizeof(struct hpt_info)); - return; - } - - pci_read_config_byte(dev, PCI_REVISION_ID, &rid); - - if (( did == PCI_DEVICE_ID_TTI_HPT366 && rid == 6) || - ((did == PCI_DEVICE_ID_TTI_HPT372 || - did == PCI_DEVICE_ID_TTI_HPT302 || - did == PCI_DEVICE_ID_TTI_HPT371) && rid > 1) || - did == PCI_DEVICE_ID_TTI_HPT372N) - info->flags |= IS_3xxN; - - rid = info->revision = hpt_revision(dev); - if (rid >= 8) /* HPT374 */ - mode = HPT374_ALLOW_ATA133_6 ? 4 : 3; - else if (rid >= 7) /* HPT371 and HPT371N */ - mode = HPT371_ALLOW_ATA133_6 ? 4 : 3; - else if (rid >= 6) /* HPT302 and HPT302N */ - mode = HPT302_ALLOW_ATA133_6 ? 4 : 3; - else if (rid >= 5) /* HPT372, HPT372A, and HPT372N */ - mode = HPT372_ALLOW_ATA133_6 ? 4 : 3; - else if (rid >= 3) /* HPT370 and HPT370A */ - mode = HPT370_ALLOW_ATA100_5 ? 3 : 2; - else /* HPT366 and HPT368 */ - mode = (HPT366_ALLOW_ATA66_4 || HPT366_ALLOW_ATA66_3) ? 2 : 1; - info->max_mode = mode; - - if (rid >= 3) - hpt37x_clocking(hwif); - else - hpt366_clocking(hwif); -} - static int __devinit init_setup_hpt374(struct pci_dev *dev, ide_pci_device_t *d) { struct pci_dev *dev2; @@ -1319,9 +1415,13 @@ static int __devinit init_setup_hpt374(struct pci_dev *dev, ide_pci_device_t *d) if (PCI_FUNC(dev->devfn) & 1) return -ENODEV; + pci_set_drvdata(dev, &hpt374); + if ((dev2 = pci_get_slot(dev->bus, dev->devfn + 1)) != NULL) { int ret; + pci_set_drvdata(dev2, &hpt374); + if (dev2->irq != dev->irq) { /* FIXME: we need a core pci_set_interrupt() */ dev2->irq = dev->irq; @@ -1338,18 +1438,25 @@ static int __devinit init_setup_hpt374(struct pci_dev *dev, ide_pci_device_t *d) static int __devinit init_setup_hpt372n(struct pci_dev *dev, ide_pci_device_t *d) { + pci_set_drvdata(dev, &hpt372n); + return ide_setup_pci_device(dev, d); } static int __devinit init_setup_hpt371(struct pci_dev *dev, ide_pci_device_t *d) { + struct hpt_info *info; u8 rev = 0, mcr1 = 0; pci_read_config_byte(dev, PCI_REVISION_ID, &rev); - if (rev > 1) + if (rev > 1) { d->name = "HPT371N"; + info = &hpt371n; + } else + info = &hpt371; + /* * HPT371 chips physically have only one channel, the secondary one, * but the primary channel registers do exist! Go figure... @@ -1360,30 +1467,44 @@ static int __devinit init_setup_hpt371(struct pci_dev *dev, ide_pci_device_t *d) if (mcr1 & 0x04) pci_write_config_byte(dev, 0x50, mcr1 & ~0x04); + pci_set_drvdata(dev, info); + return ide_setup_pci_device(dev, d); } static int __devinit init_setup_hpt372a(struct pci_dev *dev, ide_pci_device_t *d) { + struct hpt_info *info; u8 rev = 0; pci_read_config_byte(dev, PCI_REVISION_ID, &rev); - if (rev > 1) + if (rev > 1) { d->name = "HPT372N"; + info = &hpt372n; + } else + info = &hpt372a; + pci_set_drvdata(dev, info); + return ide_setup_pci_device(dev, d); } static int __devinit init_setup_hpt302(struct pci_dev *dev, ide_pci_device_t *d) { + struct hpt_info *info; u8 rev = 0; pci_read_config_byte(dev, PCI_REVISION_ID, &rev); - if (rev > 1) + if (rev > 1) { d->name = "HPT302N"; + info = &hpt302n; + } else + info = &hpt302; + pci_set_drvdata(dev, info); + return ide_setup_pci_device(dev, d); } @@ -1394,6 +1515,9 @@ static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d) static char *chipset_names[] = { "HPT366", "HPT366", "HPT368", "HPT370", "HPT370A", "HPT372", "HPT372N" }; + static struct hpt_info *info[] = { &hpt36x, &hpt36x, &hpt36x, + &hpt370, &hpt370a, &hpt372, + &hpt372n }; if (PCI_FUNC(dev->devfn) & 1) return -ENODEV; @@ -1405,6 +1529,8 @@ static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d) d->name = chipset_names[rev]; + pci_set_drvdata(dev, info[rev]); + if (rev > 2) goto init_single; @@ -1414,6 +1540,8 @@ static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d) u8 pin1 = 0, pin2 = 0; int ret; + pci_set_drvdata(dev2, info[rev]); + pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin1); pci_read_config_byte(dev2, PCI_INTERRUPT_PIN, &pin2); if (pin1 != pin2 && dev->irq == dev2->irq) { @@ -1435,40 +1563,39 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = { .name = "HPT366", .init_setup = init_setup_hpt366, .init_chipset = init_chipset_hpt366, - .init_iops = init_iops_hpt366, .init_hwif = init_hwif_hpt366, .init_dma = init_dma_hpt366, .channels = 2, .autodma = AUTODMA, + .enablebits = {{0x50,0x04,0x04}, {0x54,0x04,0x04}}, .bootable = OFF_BOARD, .extra = 240 },{ /* 1 */ .name = "HPT372A", .init_setup = init_setup_hpt372a, .init_chipset = init_chipset_hpt366, - .init_iops = init_iops_hpt366, .init_hwif = init_hwif_hpt366, .init_dma = init_dma_hpt366, .channels = 2, .autodma = AUTODMA, + .enablebits = {{0x50,0x04,0x04}, {0x54,0x04,0x04}}, .bootable = OFF_BOARD, .extra = 240 },{ /* 2 */ .name = "HPT302", .init_setup = init_setup_hpt302, .init_chipset = init_chipset_hpt366, - .init_iops = init_iops_hpt366, .init_hwif = init_hwif_hpt366, .init_dma = init_dma_hpt366, .channels = 2, .autodma = AUTODMA, + .enablebits = {{0x50,0x04,0x04}, {0x54,0x04,0x04}}, .bootable = OFF_BOARD, .extra = 240 },{ /* 3 */ .name = "HPT371", .init_setup = init_setup_hpt371, .init_chipset = init_chipset_hpt366, - .init_iops = init_iops_hpt366, .init_hwif = init_hwif_hpt366, .init_dma = init_dma_hpt366, .channels = 2, @@ -1480,22 +1607,22 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = { .name = "HPT374", .init_setup = init_setup_hpt374, .init_chipset = init_chipset_hpt366, - .init_iops = init_iops_hpt366, .init_hwif = init_hwif_hpt366, .init_dma = init_dma_hpt366, .channels = 2, /* 4 */ .autodma = AUTODMA, + .enablebits = {{0x50,0x04,0x04}, {0x54,0x04,0x04}}, .bootable = OFF_BOARD, .extra = 240 },{ /* 5 */ .name = "HPT372N", .init_setup = init_setup_hpt372n, .init_chipset = init_chipset_hpt366, - .init_iops = init_iops_hpt366, .init_hwif = init_hwif_hpt366, .init_dma = init_dma_hpt366, .channels = 2, /* 4 */ .autodma = AUTODMA, + .enablebits = {{0x50,0x04,0x04}, {0x54,0x04,0x04}}, .bootable = OFF_BOARD, .extra = 240 } |
