ide: remove useless subdirs from drivers/ide/

Suggested-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 602 insertions, 0 deletions

diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c
new file mode 100644
index 000000000000..daf9dce39e52
--- /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 <alan@redhat.com>
+ *  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>
+ *
+ *  (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"
+
+/*
+ * 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 m5229_revision;
+static u8 chip_is_1543c_e;
+static struct pci_dev *isa_dev;
+
+/**
+ *      ali_set_pio_mode        -       set host controller for PIO mode
+ *      @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)
+{
+        ide_hwif_t *hwif = HWIF(drive);
+        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;
+        int port = hwif->channel ? 0x5c : 0x58;
+        int portFIFO = hwif->channel ? 0x55 : 0x54;
+        u8 cd_dma_fifo = 0, unit = drive->dn & 1;
+
+        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;
+
+        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_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 (wdc_udma == 0 && 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
+ *      @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)
+{
+        ide_hwif_t *hwif        = HWIF(drive);
+        struct pci_dev *dev     = to_pci_dev(hwif->dev);
+        u8 speed1               = speed;
+        u8 unit                 = drive->dn & 1;
+        u8 tmpbyte              = 0x00;
+        int m5229_udma          = (hwif->channel) ? 0x57 : 0x56;
+
+        if (speed == XFER_UDMA_6)
+                speed1 = 0x47;
+
+        if (speed < XFER_UDMA_0) {
+                u8 ultra_enable = (unit) ? 0x7f : 0xf7;
+                /*
+                 * clear "ultra enable" bit
+                 */
+                pci_read_config_byte(dev, m5229_udma, &tmpbyte);
+                tmpbyte &= ultra_enable;
+                pci_write_config_byte(dev, m5229_udma, tmpbyte);
+
+                /*
+                 * FIXME: Oh, my... DMA timings are never set.
+                 */
+        } else {
+                pci_read_config_byte(dev, m5229_udma, &tmpbyte);
+                tmpbyte &= (0x0f << ((1-unit) << 2));
+                /*
+                 * enable ultra dma and set timing
+                 */
+                tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
+                pci_write_config_byte(dev, m5229_udma, tmpbyte);
+                if (speed >= XFER_UDMA_3) {
+                        pci_read_config_byte(dev, 0x4b, &tmpbyte);
+                        tmpbyte |= 1;
+                        pci_write_config_byte(dev, 0x4b, tmpbyte);
+                }
+        }
+}
+
+/**
+ *      ali15x3_dma_setup       -       begin a DMA phase
+ *      @drive: target device
+ *
+ *      Returns 1 if the DMA cannot be performed, zero on success.
+ */
+
+static int ali15x3_dma_setup(ide_drive_t *drive)
+{
+        if (m5229_revision < 0xC2 && drive->media != ide_disk) {
+                if (rq_data_dir(drive->hwif->hwgroup->rq))
+                        return 1;       /* try PIO instead of DMA */
+        }
+        return ide_dma_setup(drive);
+}
+
+/**
+ *      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 unsigned 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.
+ *      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)
+                 *
+                 * 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;
+                }
+        }
+
+        local_irq_restore(flags);
+
+        return cbl;
+}
+
+#if !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC)
+/**
+ *      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.
+ */
+
+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
+                 */
+                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 /* !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC) */
+
+/**
+ *      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 __devinit 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;
+
+        hwif->dma_ops = &sff_dma_ops;
+
+        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              = ali15x3_dma_setup,
+        .dma_exec_cmd           = ide_dma_exec_cmd,
+        .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,
+};
+
+static const struct ide_port_info ali15x3_chipset __devinitdata = {
+        .name           = DRV_NAME,
+        .init_chipset   = init_chipset_ali15x3,
+        .init_hwif      = init_hwif_ali15x3,
+        .init_dma       = init_dma_ali15x3,
+        .port_ops       = &ali_port_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 __devinit 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)
+{
+        return 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");
+MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
+MODULE_LICENSE("GPL");