* Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org>
* Portions Copyright (C) 2001 Sun Microsystems, Inc.
* Portions Copyright (C) 2003 Red Hat Inc
+ * Portions Copyright (C) 2005-2006 MontaVista Software, Inc.
*
* Thanks to HighPoint Technologies for their assistance, and hardware.
* Special Thanks to Jon Burchmore in SanDiego for the deep pockets, his
* development and support.
*
*
- * Highpoint have their own driver (source except for the raid part)
- * available from http://www.highpoint-tech.com/hpt3xx-opensource-v131.tgz
- * This may be useful to anyone wanting to work on the mainstream hpt IDE.
+ * HighPoint has its own drivers (open source except for the RAID part)
+ * available from http://www.highpoint-tech.com/BIOS%20+%20Driver/.
+ * This may be useful to anyone wanting to work on this driver, however do not
+ * trust them too much since the code tends to become less and less meaningful
+ * as the time passes... :-/
*
* Note that final HPT370 support was done by force extraction of GPL.
*
* keeping me sane.
* Alan Cox <alan@redhat.com>
*
+ * - fix the clock turnaround code: it was writing to the wrong ports when
+ * called for the secondary channel, caching the current clock mode per-
+ * 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 by default (50 MHz DPLL clock do 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)
+ * <source@mvista.com>
+ *
*/
/* various tuning parameters */
#define HPT_RESET_STATE_ENGINE
-#undef HPT_DELAY_INTERRUPT
-#undef HPT_SERIALIZE_IO
+#undef HPT_DELAY_INTERRUPT
+#define HPT_SERIALIZE_IO 0
static const char *quirk_drives[] = {
"QUANTUM FIREBALLlct08 08",
#define HPT374_ALLOW_ATA133_6 0
#define HPT371_ALLOW_ATA133_6 0
#define HPT302_ALLOW_ATA133_6 0
-#define HPT372_ALLOW_ATA133_6 1
+#define HPT372_ALLOW_ATA133_6 0
#define HPT370_ALLOW_ATA100_5 1
#define HPT366_ALLOW_ATA66_4 1
#define HPT366_ALLOW_ATA66_3 1
int revision; /* Chipset revision */
int flags; /* Chipset properties */
#define PLL_MODE 1
-#define IS_372N 2
+#define IS_3xxN 2
+#define PCI_66MHZ 4
/* Speed table */
struct chipset_bus_clock_list_entry *speed;
};
}
/**
- * hpt372n_set_clock - perform clock switching dance
- * @drive: Drive to switch
- * @mode: Switching mode (0x21 for write, 0x23 otherwise)
+ * hpt3xxn_set_clock - perform clock switching dance
+ * @hwif: hwif to switch
+ * @mode: clocking mode (0x21 for write, 0x23 otherwise)
*
- * Switch the DPLL clock on the HPT372N devices. This is a
- * right mess.
+ * 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 hpt372n_set_clock(ide_drive_t *drive, int mode)
+
+static void hpt3xxn_set_clock(ide_hwif_t *hwif, u8 mode)
{
- ide_hwif_t *hwif = HWIF(drive);
-
- /* FIXME: should we check for DMA active and BUG() */
+ u8 mcr1, 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 */
- outb(0x80, hwif->dma_base+0x73);
- outb(0x80, hwif->dma_base+0x77);
-
+ if (mcr1 & 0x04)
+ hwif->OUTB(0x80, hwif->dma_master + 0x73);
+ hwif->OUTB(0x80, hwif->dma_master + 0x77);
+
/* Switch clock and reset channels */
- outb(mode, hwif->dma_base+0x7B);
- outb(0xC0, hwif->dma_base+0x79);
-
+ hwif->OUTB(mode, hwif->dma_master + 0x7b);
+ hwif->OUTB(0xc0, hwif->dma_master + 0x79);
+
/* Reset state machines */
- outb(0x37, hwif->dma_base+0x70);
- outb(0x37, hwif->dma_base+0x74);
-
+ if (mcr1 & 0x04)
+ hwif->OUTB(0x37, hwif->dma_master + 0x70);
+ hwif->OUTB(0x37, hwif->dma_master + 0x74);
+
/* Complete reset */
- outb(0x00, hwif->dma_base+0x79);
-
+ hwif->OUTB(0x00, hwif->dma_master + 0x79);
+
/* Reconnect channels to bus */
- outb(0x00, hwif->dma_base+0x73);
- outb(0x00, hwif->dma_base+0x77);
+ if (mcr1 & 0x04)
+ hwif->OUTB(0x00, hwif->dma_master + 0x73);
+ hwif->OUTB(0x00, hwif->dma_master + 0x77);
}
/**
- * hpt372n_rw_disk - prepare for I/O
+ * hpt3xxn_rw_disk - prepare for I/O
* @drive: drive for command
* @rq: block request structure
*
- * This is called when a disk I/O is issued to the 372N.
+ * This is called when a disk I/O is issued to HPT3xxN.
* We need it because of the clock switching.
*/
-static void hpt372n_rw_disk(ide_drive_t *drive, struct request *rq)
+static void hpt3xxn_rw_disk(ide_drive_t *drive, struct request *rq)
{
- ide_hwif_t *hwif = drive->hwif;
- int wantclock;
-
- wantclock = rq_data_dir(rq) ? 0x23 : 0x21;
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 wantclock = rq_data_dir(rq) ? 0x23 : 0x21;
- if (hwif->config_data != wantclock) {
- hpt372n_set_clock(drive, wantclock);
- hwif->config_data = wantclock;
- }
+ hpt3xxn_set_clock(hwif, wantclock);
}
/*
int adjust, i;
u16 freq;
u32 pll;
- u8 reg5bh;
+ u8 reg5bh = 0, mcr1 = 0;
/*
* default to pci clock. make sure MA15/16 are set to output
freq &= 0x1FF;
/*
- * The 372N uses different PCI clock information and has
- * some other complications
- * On PCI33 timing we must clock switch
- * On PCI66 timing we must NOT use the PCI clock
- *
- * Currently we always set up the PLL for the 372N
+ * HPT3xxN chips use different PCI clock information.
+ * Currently we always set up the PLL for them.
*/
-
- if(info->flags & IS_372N)
- {
- printk(KERN_INFO "hpt: HPT372N detected, using 372N timing.\n");
+
+ if (info->flags & IS_3xxN) {
if(freq < 0x55)
pll = F_LOW_PCI_33;
else if(freq < 0x70)
pll = F_LOW_PCI_50;
else
pll = F_LOW_PCI_66;
-
- printk(KERN_INFO "FREQ: %d PLL: %d\n", freq, pll);
-
- /* We always use the pll not the PCI clock on 372N */
+
+ printk(KERN_INFO "HPT3xxN detected, FREQ: %d, PLL: %d\n", freq, pll);
}
else
{
printk(KERN_DEBUG "HPT37X: using 66MHz PCI clock\n");
}
}
-
+
+ if (pll == F_LOW_PCI_66)
+ info->flags |= PCI_66MHZ;
+
/*
* 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
goto init_hpt37X_done;
}
}
- if (!pci_get_drvdata(dev)) {
- printk("No Clock Stabilization!!!\n");
- return;
- }
pll_recal:
if (adjust & 1)
pll -= (adjust >> 1);
init_hpt37X_done:
if (!info->speed)
- printk(KERN_ERR "HPT37X%s: unknown bus timing [%d %d].\n",
- (info->flags & IS_372N)?"N":"", pll, freq);
- /* reset state engine */
- pci_write_config_byte(dev, 0x50, 0x37);
- pci_write_config_byte(dev, 0x54, 0x37);
+ printk(KERN_ERR "HPT37x%s: unknown bus timing [%d %d].\n",
+ (info->flags & IS_3xxN) ? "N" : "", 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);
}
struct pci_dev *dev = hwif->pci_dev;
struct hpt_info *info = ide_get_hwifdata(hwif);
u8 ata66 = 0, regmask = (hwif->channel) ? 0x01 : 0x02;
+ int serialize = HPT_SERIALIZE_IO;
hwif->tuneproc = &hpt3xx_tune_drive;
hwif->speedproc = &hpt3xx_tune_chipset;
hwif->intrproc = &hpt3xx_intrproc;
hwif->maskproc = &hpt3xx_maskproc;
- if(info->flags & IS_372N)
- hwif->rw_disk = &hpt372n_rw_disk;
+ /*
+ * HPT3xxN chips have some complications:
+ *
+ * - 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) {
+ /*
+ * Clock is shared between the channels,
+ * so we'll have to serialize them... :-(
+ */
+ serialize = 1;
+ hwif->rw_disk = &hpt3xxn_rw_disk;
+ }
/*
* The HPT37x uses the CBLID pins as outputs for MA15/MA16
PCI_FUNC(hwif->pci_dev->devfn));
#endif /* DEBUG */
-#ifdef HPT_SERIALIZE_IO
- /* serialize access to this device */
- if (hwif->mate)
+ /* Serialize access to this device */
+ if (serialize && hwif->mate)
hwif->serialized = hwif->mate->serialized = 1;
-#endif
if (info->revision >= 3) {
u8 reg5ah = 0;
return;
if(info->speed == NULL) {
- printk(KERN_WARNING "hpt: no known IDE timings, disabling DMA.\n");
+ printk(KERN_WARNING "hpt366: no known IDE timings, disabling DMA.\n");
return;
}
static void __devinit init_iops_hpt366(ide_hwif_t *hwif)
{
- struct hpt_info *info = kzalloc(sizeof(struct hpt_info), GFP_KERNEL);
- unsigned long dmabase = pci_resource_start(hwif->pci_dev, 4);
- u8 did, rid;
+ struct hpt_info *info = kzalloc(sizeof(struct hpt_info), GFP_KERNEL);
+ struct pci_dev *dev = hwif->pci_dev;
+ u16 did = dev->device;
+ u8 rid = 0;
if(info == NULL) {
printk(KERN_WARNING "hpt366: out of memory.\n");
}
ide_set_hwifdata(hwif, info);
- if(dmabase) {
- did = inb(dmabase + 0x22);
- rid = inb(dmabase + 0x28);
-
- if((did == 4 && rid == 6) || (did == 5 && rid > 1))
- info->flags |= IS_372N;
+ /* Avoid doing the same thing twice. */
+ if (hwif->channel && hwif->mate) {
+ memcpy(info, ide_get_hwifdata(hwif->mate), sizeof(struct hpt_info));
+ return;
}
- info->revision = hpt_revision(hwif->pci_dev);
+ pci_read_config_byte(dev, PCI_CLASS_REVISION, &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;
+
+ info->revision = hpt_revision(dev);
if (info->revision >= 3)
hpt37x_clocking(hwif);
return ide_setup_pci_device(dev, d);
}
+static int __devinit init_setup_hpt371(struct pci_dev *dev, ide_pci_device_t *d)
+{
+ u8 mcr1 = 0;
+
+ /*
+ * HPT371 chips physically have only one channel, the secondary one,
+ * but the primary channel registers do exist! Go figure...
+ * So, we manually disable the non-existing channel here
+ * (if the BIOS hasn't done this already).
+ */
+ pci_read_config_byte(dev, 0x50, &mcr1);
+ if (mcr1 & 0x04)
+ pci_write_config_byte(dev, 0x50, (mcr1 & ~0x04));
+
+ return ide_setup_pci_device(dev, d);
+}
+
static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d)
{
struct pci_dev *findev = NULL;
.bootable = OFF_BOARD,
},{ /* 3 */
.name = "HPT371",
- .init_setup = init_setup_hpt37x,
+ .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,
.autodma = AUTODMA,
+ .enablebits = {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
.bootable = OFF_BOARD,
},{ /* 4 */
.name = "HPT374",
projects / linux-2.6-omap-h63xx.git / commitdiff