Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 188 insertions, 0 deletions

diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c
new file mode 100644
index 000000000000..a1df2bfe3631
--- /dev/null
+++ b/drivers/ide/pci/triflex.c
@@ -0,0 +1,188 @@
+/*
+ * triflex.c
+ * 
+ * IDE Chipset driver for the Compaq TriFlex IDE controller.
+ * 
+ * Known to work with the Compaq Workstation 5x00 series.
+ *
+ * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
+ * Author: Torben Mathiasen <torben.mathiasen@hp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ * Loosely based on the piix & svwks drivers.
+ *
+ * Documentation:
+ *      Not publically available.
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/blkdev.h>
+#include <linux/hdreg.h>
+#include <linux/pci.h>
+#include <linux/ide.h>
+#include <linux/init.h>
+
+static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
+{
+        ide_hwif_t *hwif = HWIF(drive);
+        struct pci_dev *dev = hwif->pci_dev;
+        u8 channel_offset = hwif->channel ? 0x74 : 0x70;
+        u16 timing = 0;
+        u32 triflex_timings = 0;
+        u8 unit = (drive->select.b.unit & 0x01);
+        u8 speed = ide_rate_filter(0, xferspeed);
+        
+        pci_read_config_dword(dev, channel_offset, &triflex_timings);
+        
+        switch(speed) {
+                case XFER_MW_DMA_2:
+                        timing = 0x0103; 
+                        break;
+                case XFER_MW_DMA_1:
+                        timing = 0x0203;
+                        break;
+                case XFER_MW_DMA_0:
+                        timing = 0x0808;
+                        break;
+                case XFER_SW_DMA_2:
+                case XFER_SW_DMA_1:
+                case XFER_SW_DMA_0:
+                        timing = 0x0f0f;
+                        break;
+                case XFER_PIO_4:
+                        timing = 0x0202;
+                        break;
+                case XFER_PIO_3:
+                        timing = 0x0204;
+                        break;
+                case XFER_PIO_2:
+                        timing = 0x0404;
+                        break;
+                case XFER_PIO_1:
+                        timing = 0x0508;
+                        break;
+                case XFER_PIO_0:
+                        timing = 0x0808;
+                        break;
+                default:
+                        return -1;
+        }
+
+        triflex_timings &= ~(0xFFFF << (16 * unit));
+        triflex_timings |= (timing << (16 * unit));
+        
+        pci_write_config_dword(dev, channel_offset, triflex_timings);
+        
+        return (ide_config_drive_speed(drive, speed));
+}
+
+static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
+{
+        int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
+        (void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
+}
+
+static int triflex_config_drive_for_dma(ide_drive_t *drive)
+{
+        int speed = ide_dma_speed(drive, 0); /* No ultra speeds */
+
+        if (!speed) { 
+                u8 pspeed = ide_get_best_pio_mode(drive, 255, 4, NULL);
+                speed = XFER_PIO_0 + pspeed;
+        }
+        
+        (void) triflex_tune_chipset(drive, speed);
+         return ide_dma_enable(drive);
+}
+
+static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
+{
+        ide_hwif_t *hwif        = HWIF(drive);
+        struct hd_driveid *id   = drive->id;
+
+        if ((id->capability & 1) && drive->autodma) {
+                if (ide_use_dma(drive)) {
+                        if (triflex_config_drive_for_dma(drive))
+                                return hwif->ide_dma_on(drive);
+                }
+        }
+
+        hwif->tuneproc(drive, 255);
+        return hwif->ide_dma_off_quietly(drive);
+}
+
+static void __init init_hwif_triflex(ide_hwif_t *hwif)
+{
+        hwif->tuneproc = &triflex_tune_drive;
+        hwif->speedproc = &triflex_tune_chipset;
+
+        hwif->atapi_dma  = 1;
+        hwif->mwdma_mask = 0x07;
+        hwif->swdma_mask = 0x07;
+        hwif->ide_dma_check = &triflex_config_drive_xfer_rate;
+        
+        if (!noautodma)
+                hwif->autodma = 1;
+        hwif->drives[0].autodma = hwif->autodma;
+        hwif->drives[1].autodma = hwif->autodma;
+}
+
+static ide_pci_device_t triflex_device __devinitdata = {
+        .name           = "TRIFLEX",
+        .init_hwif      = init_hwif_triflex,
+        .channels       = 2,
+        .autodma        = AUTODMA,
+        .enablebits     = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
+        .bootable       = ON_BOARD,
+};
+
+static int __devinit triflex_init_one(struct pci_dev *dev, 
+                const struct pci_device_id *id)
+{
+        return ide_setup_pci_device(dev, &triflex_device);
+}
+
+static struct pci_device_id triflex_pci_tbl[] = {
+        { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE,
+          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+        { 0, },
+};
+MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
+
+static struct pci_driver driver = {
+        .name           = "TRIFLEX_IDE",
+        .id_table       = triflex_pci_tbl,
+        .probe          = triflex_init_one,
+};
+
+static int triflex_ide_init(void)
+{
+        return ide_pci_register_driver(&driver);
+}
+
+module_init(triflex_ide_init);
+
+MODULE_AUTHOR("Torben Mathiasen");
+MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
+MODULE_LICENSE("GPL");
+
+