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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/ide/alim15x3.c
Initial import
Diffstat (limited to 'drivers/ide/alim15x3.c')
-rw-r--r--drivers/ide/alim15x3.c602
1 files changed, 602 insertions, 0 deletions
diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c
new file mode 100644
index 000000000..36f76e28a
--- /dev/null
+++ b/drivers/ide/alim15x3.c
@@ -0,0 +1,602 @@
+/*
+ * Copyright (C) 1998-2000 Michel Aubry, Maintainer
+ * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
+ * Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer
+ *
+ * Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org)
+ * May be copied or modified under the terms of the GNU General Public License
+ * 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) 2007-2010 Bartlomiej Zolnierkiewicz
+ *
+ * (U)DMA capable version of ali 1533/1543(C), 1535(D)
+ *
+ **********************************************************************
+ * 9/7/99 --Parts from the above author are included and need to be
+ * converted into standard interface, once I finish the thought.
+ *
+ * Recent changes
+ * Don't use LBA48 mode on ALi <= 0xC4
+ * Don't poke 0x79 with a non ALi northbridge
+ * Don't flip undefined bits on newer chipsets (fix Fujitsu laptop hang)
+ * Allow UDMA6 on revisions > 0xC4
+ *
+ * Documentation
+ * Chipset documentation available under NDA only
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/ide.h>
+#include <linux/init.h>
+#include <linux/dmi.h>
+
+#include <asm/io.h>
+
+#define DRV_NAME "alim15x3"
+
+/*
+ * ALi devices are not plug in. Otherwise these static values would
+ * need to go. They ought to go away anyway
+ */
+
+static u8 m5229_revision;
+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);
+}
+
+static void ali_program_timings(ide_hwif_t *hwif, ide_drive_t *drive,
+ struct ide_timing *t, u8 ultra)
+{
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
+ int port = hwif->channel ? 0x5c : 0x58;
+ int udmat = 0x56 + hwif->channel;
+ u8 unit = drive->dn & 1, udma;
+ int shift = 4 * unit;
+
+ /* Set up the UDMA */
+ pci_read_config_byte(dev, udmat, &udma);
+ udma &= ~(0x0F << shift);
+ udma |= ultra << shift;
+ pci_write_config_byte(dev, udmat, udma);
+
+ if (t == NULL)
+ return;
+
+ t->setup = clamp_val(t->setup, 1, 8) & 7;
+ t->act8b = clamp_val(t->act8b, 1, 8) & 7;
+ t->rec8b = clamp_val(t->rec8b, 1, 16) & 15;
+ t->active = clamp_val(t->active, 1, 8) & 7;
+ t->recover = clamp_val(t->recover, 1, 16) & 15;
+
+ pci_write_config_byte(dev, port, t->setup);
+ pci_write_config_byte(dev, port + 1, (t->act8b << 4) | t->rec8b);
+ pci_write_config_byte(dev, port + unit + 2,
+ (t->active << 4) | t->recover);
+}
+
+/**
+ * ali_set_pio_mode - set host controller for PIO mode
+ * @hwif: port
+ * @drive: drive
+ *
+ * Program the controller for the given PIO mode.
+ */
+
+static void ali_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
+{
+ ide_drive_t *pair = ide_get_pair_dev(drive);
+ int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
+ unsigned long T = 1000000 / bus_speed; /* PCI clock based */
+ struct ide_timing t;
+
+ ide_timing_compute(drive, drive->pio_mode, &t, T, 1);
+ if (pair) {
+ struct ide_timing p;
+
+ ide_timing_compute(pair, pair->pio_mode, &p, T, 1);
+ ide_timing_merge(&p, &t, &t,
+ IDE_TIMING_SETUP | IDE_TIMING_8BIT);
+ if (pair->dma_mode) {
+ ide_timing_compute(pair, pair->dma_mode, &p, T, 1);
+ ide_timing_merge(&p, &t, &t,
+ IDE_TIMING_SETUP | IDE_TIMING_8BIT);
+ }
+ }
+
+ /*
+ * PIO mode => ATA FIFO on, ATAPI FIFO off
+ */
+ ali_fifo_control(hwif, drive, (drive->media == ide_disk) ? 0x05 : 0x00);
+
+ ali_program_timings(hwif, drive, &t, 0);
+}
+
+/**
+ * ali_udma_filter - compute UDMA mask
+ * @drive: IDE device
+ *
+ * Return available UDMA modes.
+ *
+ * The actual rules for the ALi are:
+ * No UDMA on revisions <= 0x20
+ * Disk only for revisions < 0xC2
+ * Not WDC drives on M1543C-E (?)
+ */
+
+static u8 ali_udma_filter(ide_drive_t *drive)
+{
+ if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
+ if (drive->media != ide_disk)
+ return 0;
+ if (chip_is_1543c_e &&
+ strstr((char *)&drive->id[ATA_ID_PROD], "WDC "))
+ return 0;
+ }
+
+ return drive->hwif->ultra_mask;
+}
+
+/**
+ * ali_set_dma_mode - set host controller for DMA mode
+ * @hwif: port
+ * @drive: drive
+ *
+ * Configure the hardware for the desired IDE transfer mode.
+ */
+
+static void ali_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
+{
+ static u8 udma_timing[7] = { 0xC, 0xB, 0xA, 0x9, 0x8, 0xF, 0xD };
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
+ ide_drive_t *pair = ide_get_pair_dev(drive);
+ int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
+ unsigned long T = 1000000 / bus_speed; /* PCI clock based */
+ const u8 speed = drive->dma_mode;
+ u8 tmpbyte = 0x00;
+ struct ide_timing t;
+
+ if (speed < XFER_UDMA_0) {
+ ide_timing_compute(drive, drive->dma_mode, &t, T, 1);
+ if (pair) {
+ struct ide_timing p;
+
+ ide_timing_compute(pair, pair->pio_mode, &p, T, 1);
+ ide_timing_merge(&p, &t, &t,
+ IDE_TIMING_SETUP | IDE_TIMING_8BIT);
+ if (pair->dma_mode) {
+ ide_timing_compute(pair, pair->dma_mode,
+ &p, T, 1);
+ ide_timing_merge(&p, &t, &t,
+ IDE_TIMING_SETUP | IDE_TIMING_8BIT);
+ }
+ }
+ ali_program_timings(hwif, drive, &t, 0);
+ } else {
+ ali_program_timings(hwif, drive, NULL,
+ udma_timing[speed - XFER_UDMA_0]);
+ if (speed >= XFER_UDMA_3) {
+ pci_read_config_byte(dev, 0x4b, &tmpbyte);
+ tmpbyte |= 1;
+ pci_write_config_byte(dev, 0x4b, tmpbyte);
+ }
+ }
+}
+
+/**
+ * ali_dma_check - DMA check
+ * @drive: target device
+ * @cmd: command
+ *
+ * Returns 1 if the DMA cannot be performed, zero on success.
+ */
+
+static int ali_dma_check(ide_drive_t *drive, struct ide_cmd *cmd)
+{
+ if (m5229_revision < 0xC2 && drive->media != ide_disk) {
+ if (cmd->tf_flags & IDE_TFLAG_WRITE)
+ return 1; /* try PIO instead of DMA */
+ }
+ return 0;
+}
+
+/**
+ * init_chipset_ali15x3 - Initialise an ALi IDE controller
+ * @dev: PCI device
+ *
+ * This function initializes the ALI IDE controller and where
+ * appropriate also sets up the 1533 southbridge.
+ */
+
+static int init_chipset_ali15x3(struct pci_dev *dev)
+{
+ unsigned long flags;
+ u8 tmpbyte;
+ struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
+
+ m5229_revision = dev->revision;
+
+ isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
+
+ local_irq_save(flags);
+
+ if (m5229_revision < 0xC2) {
+ /*
+ * revision 0x20 (1543-E, 1543-F)
+ * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
+ * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
+ */
+ pci_read_config_byte(dev, 0x4b, &tmpbyte);
+ /*
+ * clear bit 7
+ */
+ pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
+ /*
+ * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
+ */
+ if (m5229_revision >= 0x20 && isa_dev) {
+ pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
+ chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
+ }
+ goto out;
+ }
+
+ /*
+ * 1543C-B?, 1535, 1535D, 1553
+ * Note 1: not all "motherboard" support this detection
+ * Note 2: if no udma 66 device, the detection may "error".
+ * but in this case, we will not set the device to
+ * ultra 66, the detection result is not important
+ */
+
+ /*
+ * enable "Cable Detection", m5229, 0x4b, bit3
+ */
+ pci_read_config_byte(dev, 0x4b, &tmpbyte);
+ pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
+
+ /*
+ * We should only tune the 1533 enable if we are using an ALi
+ * North bridge. We might have no north found on some zany
+ * box without a device at 0:0.0. The ALi bridge will be at
+ * 0:0.0 so if we didn't find one we know what is cooking.
+ */
+ if (north && north->vendor != PCI_VENDOR_ID_AL)
+ goto out;
+
+ if (m5229_revision < 0xC5 && isa_dev)
+ {
+ /*
+ * set south-bridge's enable bit, m1533, 0x79
+ */
+
+ pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
+ if (m5229_revision == 0xC2) {
+ /*
+ * 1543C-B0 (m1533, 0x79, bit 2)
+ */
+ pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
+ } else if (m5229_revision >= 0xC3) {
+ /*
+ * 1553/1535 (m1533, 0x79, bit 1)
+ */
+ pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
+ }
+ }
+
+out:
+ /*
+ * CD_ROM DMA on (m5229, 0x53, bit0)
+ * Enable this bit even if we want to use PIO.
+ * PIO FIFO off (m5229, 0x53, bit1)
+ * The hardware will use 0x54h and 0x55h to control PIO FIFO.
+ * (Not on later devices it seems)
+ *
+ * 0x53 changes meaning on later revs - we must no touch
+ * bit 1 on them. Need to check if 0x20 is the right break.
+ */
+ if (m5229_revision >= 0x20) {
+ pci_read_config_byte(dev, 0x53, &tmpbyte);
+
+ if (m5229_revision <= 0x20)
+ tmpbyte = (tmpbyte & (~0x02)) | 0x01;
+ else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
+ tmpbyte |= 0x03;
+ else
+ tmpbyte |= 0x01;
+
+ pci_write_config_byte(dev, 0x53, tmpbyte);
+ }
+ pci_dev_put(north);
+ pci_dev_put(isa_dev);
+ local_irq_restore(flags);
+ return 0;
+}
+
+/*
+ * Cable special cases
+ */
+
+static const struct dmi_system_id cable_dmi_table[] = {
+ {
+ .ident = "HP Pavilion N5430",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
+ },
+ },
+ {
+ .ident = "Toshiba Satellite S1800-814",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
+ },
+ },
+ { }
+};
+
+static int ali_cable_override(struct pci_dev *pdev)
+{
+ /* Fujitsu P2000 */
+ if (pdev->subsystem_vendor == 0x10CF &&
+ pdev->subsystem_device == 0x10AF)
+ return 1;
+
+ /* Mitac 8317 (Winbook-A) and relatives */
+ if (pdev->subsystem_vendor == 0x1071 &&
+ pdev->subsystem_device == 0x8317)
+ return 1;
+
+ /* Systems by DMI */
+ if (dmi_check_system(cable_dmi_table))
+ return 1;
+
+ return 0;
+}
+
+/**
+ * ali_cable_detect - cable detection
+ * @hwif: IDE interface
+ *
+ * This checks if the controller and the cable are capable
+ * of UDMA66 transfers. It doesn't check the drives.
+ */
+
+static u8 ali_cable_detect(ide_hwif_t *hwif)
+{
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
+ u8 cbl = ATA_CBL_PATA40, tmpbyte;
+
+ if (m5229_revision >= 0xC2) {
+ /*
+ * m5229 80-pin cable detection (from Host View)
+ *
+ * 0x4a bit0 is 0 => primary channel has 80-pin
+ * 0x4a bit1 is 0 => secondary channel has 80-pin
+ *
+ * Certain laptops use short but suitable cables
+ * and don't implement the detect logic.
+ */
+ if (ali_cable_override(dev))
+ cbl = ATA_CBL_PATA40_SHORT;
+ else {
+ pci_read_config_byte(dev, 0x4a, &tmpbyte);
+ if ((tmpbyte & (1 << hwif->channel)) == 0)
+ cbl = ATA_CBL_PATA80;
+ }
+ }
+
+ return cbl;
+}
+
+#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 systems.
+ */
+
+static void init_hwif_ali15x3(ide_hwif_t *hwif)
+{
+ 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 (isa_dev) {
+ /*
+ * read IDE interface control
+ */
+ pci_read_config_byte(isa_dev, 0x58, &ideic);
+
+ /* bit0, bit1 */
+ ideic = ideic & 0x03;
+
+ /* get IRQ for IDE Controller */
+ if ((hwif->channel && ideic == 0x03) ||
+ (!hwif->channel && !ideic)) {
+ /*
+ * get SIRQ1 routing table
+ */
+ pci_read_config_byte(isa_dev, 0x44, &inmir);
+ inmir = inmir & 0x0f;
+ irq = irq_routing_table[inmir];
+ } else if (hwif->channel && !(ideic & 0x01)) {
+ /*
+ * get SIRQ2 routing table
+ */
+ pci_read_config_byte(isa_dev, 0x75, &inmir);
+ inmir = inmir & 0x0f;
+ irq = irq_routing_table[inmir];
+ }
+ if(irq >= 0)
+ hwif->irq = irq;
+ }
+}
+#else
+#define init_hwif_ali15x3 NULL
+#endif /* CONFIG_SPARC64 */
+
+/**
+ * init_dma_ali15x3 - set up DMA on ALi15x3
+ * @hwif: IDE interface
+ * @d: IDE port info
+ *
+ * Set up the DMA functionality on the ALi 15x3.
+ */
+
+static int init_dma_ali15x3(ide_hwif_t *hwif, const struct ide_port_info *d)
+{
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
+ unsigned long base = ide_pci_dma_base(hwif, d);
+
+ if (base == 0)
+ return -1;
+
+ hwif->dma_base = base;
+
+ if (ide_pci_check_simplex(hwif, d) < 0)
+ return -1;
+
+ if (ide_pci_set_master(dev, d->name) < 0)
+ return -1;
+
+ if (!hwif->channel)
+ outb(inb(base + 2) & 0x60, base + 2);
+
+ printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx\n",
+ hwif->name, base, base + 7);
+
+ if (ide_allocate_dma_engine(hwif))
+ return -1;
+
+ return 0;
+}
+
+static const struct ide_port_ops ali_port_ops = {
+ .set_pio_mode = ali_set_pio_mode,
+ .set_dma_mode = ali_set_dma_mode,
+ .udma_filter = ali_udma_filter,
+ .cable_detect = ali_cable_detect,
+};
+
+static const struct ide_dma_ops ali_dma_ops = {
+ .dma_host_set = ide_dma_host_set,
+ .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_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 = {
+ .name = DRV_NAME,
+ .init_chipset = init_chipset_ali15x3,
+ .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,
+};
+
+/**
+ * alim15x3_init_one - set up an ALi15x3 IDE controller
+ * @dev: PCI device to set up
+ *
+ * Perform the actual set up for an ALi15x3 that has been found by the
+ * hot plug layer.
+ */
+
+static int alim15x3_init_one(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct ide_port_info d = ali15x3_chipset;
+ u8 rev = dev->revision, idx = id->driver_data;
+
+ /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
+ if (rev <= 0xC4)
+ d.host_flags |= IDE_HFLAG_NO_LBA48_DMA;
+
+ if (rev >= 0x20) {
+ if (rev == 0x20)
+ d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
+
+ if (rev < 0xC2)
+ d.udma_mask = ATA_UDMA2;
+ else if (rev == 0xC2 || rev == 0xC3)
+ d.udma_mask = ATA_UDMA4;
+ else if (rev == 0xC4)
+ d.udma_mask = ATA_UDMA5;
+ else
+ d.udma_mask = ATA_UDMA6;
+
+ d.dma_ops = &ali_dma_ops;
+ } else {
+ d.host_flags |= IDE_HFLAG_NO_DMA;
+
+ d.mwdma_mask = d.swdma_mask = 0;
+ }
+
+ if (idx == 0)
+ d.host_flags |= IDE_HFLAG_CLEAR_SIMPLEX;
+
+ return ide_pci_init_one(dev, &d, NULL);
+}
+
+
+static const struct pci_device_id alim15x3_pci_tbl[] = {
+ { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), 0 },
+ { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), 1 },
+ { 0, },
+};
+MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
+
+static struct pci_driver alim15x3_pci_driver = {
+ .name = "ALI15x3_IDE",
+ .id_table = alim15x3_pci_tbl,
+ .probe = alim15x3_init_one,
+ .remove = ide_pci_remove,
+ .suspend = ide_pci_suspend,
+ .resume = ide_pci_resume,
+};
+
+static int __init ali15x3_ide_init(void)
+{
+ return ide_pci_register_driver(&alim15x3_pci_driver);
+}
+
+static void __exit ali15x3_ide_exit(void)
+{
+ pci_unregister_driver(&alim15x3_pci_driver);
+}
+
+module_init(ali15x3_ide_init);
+module_exit(ali15x3_ide_exit);
+
+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");