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, 389 insertions, 0 deletions

diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
new file mode 100644
index 000000000000..6f6674aa31ef
--- /dev/null
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -0,0 +1,389 @@
+/*
+ * Linux driver attachment glue for PCI based controllers.
+ *
+ * Copyright (c) 2000-2001 Adaptec Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c#47 $
+ */
+
+#include "aic7xxx_osm.h"
+#include "aic7xxx_pci.h"
+
+static int      ahc_linux_pci_dev_probe(struct pci_dev *pdev,
+                                        const struct pci_device_id *ent);
+static int      ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc,
+                                                u_long *base);
+static int      ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
+                                                 u_long *bus_addr,
+                                                 uint8_t __iomem **maddr);
+static void     ahc_linux_pci_dev_remove(struct pci_dev *pdev);
+
+/* Define the macro locally since it's different for different class of chips.
+*/
+#define ID(x)   ID_C(x, PCI_CLASS_STORAGE_SCSI)
+
+static struct pci_device_id ahc_linux_pci_id_table[] = {
+        /* aic7850 based controllers */
+        ID(ID_AHA_2902_04_10_15_20C_30C),
+        /* aic7860 based controllers */
+        ID(ID_AHA_2930CU),
+        ID(ID_AHA_1480A & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK),
+        /* aic7870 based controllers */
+        ID(ID_AHA_2940),
+        ID(ID_AHA_3940),
+        ID(ID_AHA_398X),
+        ID(ID_AHA_2944),
+        ID(ID_AHA_3944),
+        ID(ID_AHA_4944),
+        /* aic7880 based controllers */
+        ID(ID_AHA_2940U & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_3940U & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_2944U & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_3944U & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_398XU & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_4944U & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_2930U & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK),
+        ID(ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK),
+        /* aic7890 based controllers */
+        ID(ID_AHA_2930U2),
+        ID(ID_AHA_2940U2B),
+        ID(ID_AHA_2940U2_OEM),
+        ID(ID_AHA_2940U2),
+        ID(ID_AHA_2950U2B),
+        ID16(ID_AIC7890_ARO & ID_AIC7895_ARO_MASK),
+        ID(ID_AAA_131U2),
+        /* aic7890 based controllers */
+        ID(ID_AHA_29160),
+        ID(ID_AHA_29160_CPQ),
+        ID(ID_AHA_29160N),
+        ID(ID_AHA_29160C),
+        ID(ID_AHA_29160B),
+        ID(ID_AHA_19160B),
+        ID(ID_AIC7892_ARO),
+        /* aic7892 based controllers */
+        ID(ID_AHA_2940U_DUAL),
+        ID(ID_AHA_3940AU),
+        ID(ID_AHA_3944AU),
+        ID(ID_AIC7895_ARO),
+        ID(ID_AHA_3950U2B_0),
+        ID(ID_AHA_3950U2B_1),
+        ID(ID_AHA_3950U2D_0),
+        ID(ID_AHA_3950U2D_1),
+        ID(ID_AIC7896_ARO),
+        /* aic7899 based controllers */
+        ID(ID_AHA_3960D),
+        ID(ID_AHA_3960D_CPQ),
+        ID(ID_AIC7899_ARO),
+        /* Generic chip probes for devices we don't know exactly. */
+        ID(ID_AIC7850 & ID_DEV_VENDOR_MASK),
+        ID(ID_AIC7855 & ID_DEV_VENDOR_MASK),
+        ID(ID_AIC7859 & ID_DEV_VENDOR_MASK),
+        ID(ID_AIC7860 & ID_DEV_VENDOR_MASK),
+        ID(ID_AIC7870 & ID_DEV_VENDOR_MASK),
+        ID(ID_AIC7880 & ID_DEV_VENDOR_MASK),
+        ID16(ID_AIC7890 & ID_9005_GENERIC_MASK),
+        ID16(ID_AIC7892 & ID_9005_GENERIC_MASK),
+        ID(ID_AIC7895 & ID_DEV_VENDOR_MASK),
+        ID16(ID_AIC7896 & ID_9005_GENERIC_MASK),
+        ID16(ID_AIC7899 & ID_9005_GENERIC_MASK),
+        ID(ID_AIC7810 & ID_DEV_VENDOR_MASK),
+        ID(ID_AIC7815 & ID_DEV_VENDOR_MASK),
+        { 0 }
+};
+
+MODULE_DEVICE_TABLE(pci, ahc_linux_pci_id_table);
+
+struct pci_driver aic7xxx_pci_driver = {
+        .name           = "aic7xxx",
+        .probe          = ahc_linux_pci_dev_probe,
+        .remove         = ahc_linux_pci_dev_remove,
+        .id_table       = ahc_linux_pci_id_table
+};
+
+static void
+ahc_linux_pci_dev_remove(struct pci_dev *pdev)
+{
+        struct ahc_softc *ahc;
+        u_long l;
+
+        /*
+         * We should be able to just perform
+         * the free directly, but check our
+         * list for extra sanity.
+         */
+        ahc_list_lock(&l);
+        ahc = ahc_find_softc((struct ahc_softc *)pci_get_drvdata(pdev));
+        if (ahc != NULL) {
+                u_long s;
+
+                TAILQ_REMOVE(&ahc_tailq, ahc, links);
+                ahc_list_unlock(&l);
+                ahc_lock(ahc, &s);
+                ahc_intr_enable(ahc, FALSE);
+                ahc_unlock(ahc, &s);
+                ahc_free(ahc);
+        } else
+                ahc_list_unlock(&l);
+}
+
+static int
+ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+        char             buf[80];
+        const uint64_t   mask_39bit = 0x7FFFFFFFFFULL;
+        struct           ahc_softc *ahc;
+        ahc_dev_softc_t  pci;
+        struct           ahc_pci_identity *entry;
+        char            *name;
+        int              error;
+
+        /*
+         * Some BIOSen report the same device multiple times.
+         */
+        TAILQ_FOREACH(ahc, &ahc_tailq, links) {
+                struct pci_dev *probed_pdev;
+
+                probed_pdev = ahc->dev_softc;
+                if (probed_pdev->bus->number == pdev->bus->number
+                 && probed_pdev->devfn == pdev->devfn)
+                        break;
+        }
+        if (ahc != NULL) {
+                /* Skip duplicate. */
+                return (-ENODEV);
+        }
+
+        pci = pdev;
+        entry = ahc_find_pci_device(pci);
+        if (entry == NULL)
+                return (-ENODEV);
+
+        /*
+         * Allocate a softc for this card and
+         * set it up for attachment by our
+         * common detect routine.
+         */
+        sprintf(buf, "ahc_pci:%d:%d:%d",
+                ahc_get_pci_bus(pci),
+                ahc_get_pci_slot(pci),
+                ahc_get_pci_function(pci));
+        name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
+        if (name == NULL)
+                return (-ENOMEM);
+        strcpy(name, buf);
+        ahc = ahc_alloc(NULL, name);
+        if (ahc == NULL)
+                return (-ENOMEM);
+        if (pci_enable_device(pdev)) {
+                ahc_free(ahc);
+                return (-ENODEV);
+        }
+        pci_set_master(pdev);
+
+        if (sizeof(dma_addr_t) > 4
+         && ahc_linux_get_memsize() > 0x80000000
+         && pci_set_dma_mask(pdev, mask_39bit) == 0) {
+                ahc->flags |= AHC_39BIT_ADDRESSING;
+                ahc->platform_data->hw_dma_mask = mask_39bit;
+        } else {
+                if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
+                        printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
+                        return (-ENODEV);
+                }
+                ahc->platform_data->hw_dma_mask = DMA_32BIT_MASK;
+        }
+        ahc->dev_softc = pci;
+        error = ahc_pci_config(ahc, entry);
+        if (error != 0) {
+                ahc_free(ahc);
+                return (-error);
+        }
+        pci_set_drvdata(pdev, ahc);
+        if (aic7xxx_detect_complete) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
+                ahc_linux_register_host(ahc, &aic7xxx_driver_template);
+#else
+                printf("aic7xxx: ignoring PCI device found after "
+                       "initialization\n");
+                return (-ENODEV);
+#endif
+        }
+        return (0);
+}
+
+int
+ahc_linux_pci_init(void)
+{
+        /* Translate error or zero return into zero or one */
+        return pci_module_init(&aic7xxx_pci_driver) ? 0 : 1;
+}
+
+void
+ahc_linux_pci_exit(void)
+{
+        pci_unregister_driver(&aic7xxx_pci_driver);
+}
+
+static int
+ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, u_long *base)
+{
+        if (aic7xxx_allow_memio == 0)
+                return (ENOMEM);
+
+        *base = pci_resource_start(ahc->dev_softc, 0);
+        if (*base == 0)
+                return (ENOMEM);
+        if (request_region(*base, 256, "aic7xxx") == 0)
+                return (ENOMEM);
+        return (0);
+}
+
+static int
+ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
+                                 u_long *bus_addr,
+                                 uint8_t __iomem **maddr)
+{
+        u_long  start;
+        int     error;
+
+        error = 0;
+        start = pci_resource_start(ahc->dev_softc, 1);
+        if (start != 0) {
+                *bus_addr = start;
+                if (request_mem_region(start, 0x1000, "aic7xxx") == 0)
+                        error = ENOMEM;
+                if (error == 0) {
+                        *maddr = ioremap_nocache(start, 256);
+                        if (*maddr == NULL) {
+                                error = ENOMEM;
+                                release_mem_region(start, 0x1000);
+                        }
+                }
+        } else
+                error = ENOMEM;
+        return (error);
+}
+
+int
+ahc_pci_map_registers(struct ahc_softc *ahc)
+{
+        uint32_t command;
+        u_long   base;
+        uint8_t __iomem *maddr;
+        int      error;
+
+        /*
+         * If its allowed, we prefer memory mapped access.
+         */
+        command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, 4);
+        command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
+        base = 0;
+        maddr = NULL;
+        error = ahc_linux_pci_reserve_mem_region(ahc, &base, &maddr);
+        if (error == 0) {
+                ahc->platform_data->mem_busaddr = base;
+                ahc->tag = BUS_SPACE_MEMIO;
+                ahc->bsh.maddr = maddr;
+                ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
+                                     command | PCIM_CMD_MEMEN, 4);
+
+                /*
+                 * Do a quick test to see if memory mapped
+                 * I/O is functioning correctly.
+                 */
+                if (ahc_pci_test_register_access(ahc) != 0) {
+
+                        printf("aic7xxx: PCI Device %d:%d:%d "
+                               "failed memory mapped test.  Using PIO.\n",
+                               ahc_get_pci_bus(ahc->dev_softc),
+                               ahc_get_pci_slot(ahc->dev_softc),
+                               ahc_get_pci_function(ahc->dev_softc));
+                        iounmap(maddr);
+                        release_mem_region(ahc->platform_data->mem_busaddr,
+                                           0x1000);
+                        ahc->bsh.maddr = NULL;
+                        maddr = NULL;
+                } else
+                        command |= PCIM_CMD_MEMEN;
+        } else {
+                printf("aic7xxx: PCI%d:%d:%d MEM region 0x%lx "
+                       "unavailable. Cannot memory map device.\n",
+                       ahc_get_pci_bus(ahc->dev_softc),
+                       ahc_get_pci_slot(ahc->dev_softc),
+                       ahc_get_pci_function(ahc->dev_softc),
+                       base);
+        }
+
+        /*
+         * We always prefer memory mapped access.
+         */
+        if (maddr == NULL) {
+
+                error = ahc_linux_pci_reserve_io_region(ahc, &base);
+                if (error == 0) {
+                        ahc->tag = BUS_SPACE_PIO;
+                        ahc->bsh.ioport = base;
+                        command |= PCIM_CMD_PORTEN;
+                } else {
+                        printf("aic7xxx: PCI%d:%d:%d IO region 0x%lx[0..255] "
+                               "unavailable. Cannot map device.\n",
+                               ahc_get_pci_bus(ahc->dev_softc),
+                               ahc_get_pci_slot(ahc->dev_softc),
+                               ahc_get_pci_function(ahc->dev_softc),
+                               base);
+                }
+        }
+        ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, 4);
+        return (error);
+}
+
+int
+ahc_pci_map_int(struct ahc_softc *ahc)
+{
+        int error;
+
+        error = request_irq(ahc->dev_softc->irq, ahc_linux_isr,
+                            SA_SHIRQ, "aic7xxx", ahc);
+        if (error == 0)
+                ahc->platform_data->irq = ahc->dev_softc->irq;
+        
+        return (-error);
+}
+