* Copyright (C) 2002 Alan Cox
* ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
* Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
- * Copyright (C) 2007 Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
+ * Copyright (C) 2007-2010 Bartlomiej Zolnierkiewicz
*
* (U)DMA capable version of ali 1533/1543(C), 1535(D)
*
#define DRV_NAME "alim15x3"
/*
- * Allow UDMA on M1543C-E chipset for WDC disks that ignore CRC checking
- * (this is DANGEROUS and could result in data corruption).
- */
-static int wdc_udma;
-
-module_param(wdc_udma, bool, 0);
-MODULE_PARM_DESC(wdc_udma,
- "allow UDMA on M1543C-E chipset for WDC disks (DANGEROUS)");
-
-/*
* ALi devices are not plug in. Otherwise these static values would
* need to go. They ought to go away anyway
*/
static u8 chip_is_1543c_e;
static struct pci_dev *isa_dev;
+static void ali_fifo_control(ide_hwif_t *hwif, ide_drive_t *drive, int on)
+{
+ struct pci_dev *pdev = to_pci_dev(hwif->dev);
+ int pio_fifo = 0x54 + hwif->channel;
+ u8 fifo;
+ int shift = 4 * (drive->dn & 1);
+
+ pci_read_config_byte(pdev, pio_fifo, &fifo);
+ fifo &= ~(0x0F << shift);
+ fifo |= (on << shift);
+ pci_write_config_byte(pdev, pio_fifo, fifo);
+}
+
/**
* ali_set_pio_mode - set host controller for PIO mode
+ * @hwif: port
* @drive: drive
- * @pio: PIO mode number
*
* Program the controller for the given PIO mode.
*/
-static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void ali_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
- ide_hwif_t *hwif = drive->hwif;
struct pci_dev *dev = to_pci_dev(hwif->dev);
- struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
- int s_time = t->setup, a_time = t->active, c_time = t->cycle;
- u8 s_clc, a_clc, r_clc;
- unsigned long flags;
int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
+ unsigned long T = 1000000 / bus_speed; /* PCI clock based */
int port = hwif->channel ? 0x5c : 0x58;
- int portFIFO = hwif->channel ? 0x55 : 0x54;
- u8 cd_dma_fifo = 0, unit = drive->dn & 1;
+ u8 unit = drive->dn & 1;
+ struct ide_timing t;
- if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8)
- s_clc = 0;
- if ((a_clc = (a_time * bus_speed + 999) / 1000) >= 8)
- a_clc = 0;
+ ide_timing_compute(drive, drive->pio_mode, &t, T, 1);
+
+ t.setup = clamp_val(t.setup, 1, 8) & 7;
+ t.active = clamp_val(t.active, 1, 8) & 7;
+ t.recover = clamp_val(t.recover, 1, 16) & 15;
- if (!(r_clc = (c_time * bus_speed + 999) / 1000 - a_clc - s_clc)) {
- r_clc = 1;
- } else {
- if (r_clc >= 16)
- r_clc = 0;
- }
- local_irq_save(flags);
-
/*
* PIO mode => ATA FIFO on, ATAPI FIFO off
*/
- pci_read_config_byte(dev, portFIFO, &cd_dma_fifo);
- if (drive->media==ide_disk) {
- if (unit) {
- pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50);
- } else {
- pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05);
- }
- } else {
- if (unit) {
- pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F);
- } else {
- pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0);
- }
- }
-
- pci_write_config_byte(dev, port, s_clc);
- pci_write_config_byte(dev, port + unit + 2, (a_clc << 4) | r_clc);
- local_irq_restore(flags);
+ ali_fifo_control(hwif, drive, (drive->media == ide_disk) ? 0x05 : 0x00);
+
+ pci_write_config_byte(dev, port, t.setup);
+ pci_write_config_byte(dev, port + unit + 2,
+ (t.active << 4) | t.recover);
}
/**
if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
if (drive->media != ide_disk)
return 0;
- if (wdc_udma == 0 && chip_is_1543c_e &&
+ if (chip_is_1543c_e &&
strstr((char *)&drive->id[ATA_ID_PROD], "WDC "))
return 0;
}
/**
* ali_set_dma_mode - set host controller for DMA mode
+ * @hwif: port
* @drive: drive
- * @speed: DMA mode
*
* Configure the hardware for the desired IDE transfer mode.
*/
-static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
+static void ali_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
- ide_hwif_t *hwif = drive->hwif;
struct pci_dev *dev = to_pci_dev(hwif->dev);
+ const u8 speed = drive->dma_mode;
u8 speed1 = speed;
u8 unit = drive->dn & 1;
u8 tmpbyte = 0x00;
}
/**
- * ali15x3_dma_setup - begin a DMA phase
+ * ali_dma_check - DMA check
* @drive: target device
+ * @cmd: command
*
* Returns 1 if the DMA cannot be performed, zero on success.
*/
-static int ali15x3_dma_setup(ide_drive_t *drive)
+static int ali_dma_check(ide_drive_t *drive, struct ide_cmd *cmd)
{
if (m5229_revision < 0xC2 && drive->media != ide_disk) {
- if (rq_data_dir(drive->hwif->rq))
+ if (cmd->tf_flags & IDE_TFLAG_WRITE)
return 1; /* try PIO instead of DMA */
}
- return ide_dma_setup(drive);
+ return 0;
}
/**
* appropriate also sets up the 1533 southbridge.
*/
-static unsigned int init_chipset_ali15x3(struct pci_dev *dev)
+static int init_chipset_ali15x3(struct pci_dev *dev)
{
unsigned long flags;
u8 tmpbyte;
*
* This checks if the controller and the cable are capable
* of UDMA66 transfers. It doesn't check the drives.
- * But see note 2 below!
- *
- * FIXME: frobs bits that are not defined on newer ALi devicea
*/
static u8 ali_cable_detect(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
- unsigned long flags;
u8 cbl = ATA_CBL_PATA40, tmpbyte;
- local_irq_save(flags);
-
if (m5229_revision >= 0xC2) {
/*
* m5229 80-pin cable detection (from Host View)
}
}
- local_irq_restore(flags);
-
return cbl;
}
-#if !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC)
+#ifndef CONFIG_SPARC64
/**
* init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
* @hwif: interface to configure
*
* Obtain the IRQ tables for an ALi based IDE solution on the PC
* class platforms. This part of the code isn't applicable to the
- * Sparc and PowerPC systems.
+ * Sparc systems.
*/
static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
{
- struct pci_dev *dev = to_pci_dev(hwif->dev);
u8 ideic, inmir;
s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
1, 11, 0, 12, 0, 14, 0, 15 };
int irq = -1;
- if (dev->device == PCI_DEVICE_ID_AL_M5229)
- hwif->irq = hwif->channel ? 15 : 14;
-
if (isa_dev) {
/*
* read IDE interface control
}
#else
#define init_hwif_ali15x3 NULL
-#endif /* !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC) */
+#endif /* CONFIG_SPARC64 */
/**
* init_dma_ali15x3 - set up DMA on ALi15x3
if (ide_allocate_dma_engine(hwif))
return -1;
- hwif->dma_ops = &sff_dma_ops;
-
return 0;
}
static const struct ide_dma_ops ali_dma_ops = {
.dma_host_set = ide_dma_host_set,
- .dma_setup = ali15x3_dma_setup,
- .dma_exec_cmd = ide_dma_exec_cmd,
+ .dma_setup = ide_dma_setup,
.dma_start = ide_dma_start,
.dma_end = ide_dma_end,
.dma_test_irq = ide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
- .dma_timeout = ide_dma_timeout,
+ .dma_check = ali_dma_check,
+ .dma_timer_expiry = ide_dma_sff_timer_expiry,
+ .dma_sff_read_status = ide_dma_sff_read_status,
};
static const struct ide_port_info ali15x3_chipset __devinitdata = {
.init_hwif = init_hwif_ali15x3,
.init_dma = init_dma_ali15x3,
.port_ops = &ali_port_ops,
+ .dma_ops = &sff_dma_ops,
.pio_mask = ATA_PIO5,
.swdma_mask = ATA_SWDMA2,
.mwdma_mask = ATA_MWDMA2,
module_init(ali15x3_ide_init);
module_exit(ali15x3_ide_exit);
-MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox");
+MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox, Bartlomiej Zolnierkiewicz");
MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff