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path: root/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
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Diffstat (limited to 'drivers/scsi/aic7xxx/aic79xx_osm_pci.c')
-rw-r--r--drivers/scsi/aic7xxx/aic79xx_osm_pci.c397
1 files changed, 397 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
new file mode 100644
index 000000000..8466aa784
--- /dev/null
+++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
@@ -0,0 +1,397 @@
+/*
+ * Linux driver attachment glue for PCI based U320 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/aic79xx_osm_pci.c#25 $
+ */
+
+#include "aic79xx_osm.h"
+#include "aic79xx_inline.h"
+#include "aic79xx_pci.h"
+
+/* Define the macro locally since it's different for different class of chips.
+ */
+#define ID(x) \
+ ID2C(x), \
+ ID2C(IDIROC(x))
+
+static const struct pci_device_id ahd_linux_pci_id_table[] = {
+ /* aic7901 based controllers */
+ ID(ID_AHA_29320A),
+ ID(ID_AHA_29320ALP),
+ ID(ID_AHA_29320LPE),
+ /* aic7902 based controllers */
+ ID(ID_AHA_29320),
+ ID(ID_AHA_29320B),
+ ID(ID_AHA_29320LP),
+ ID(ID_AHA_39320),
+ ID(ID_AHA_39320_B),
+ ID(ID_AHA_39320A),
+ ID(ID_AHA_39320D),
+ ID(ID_AHA_39320D_HP),
+ ID(ID_AHA_39320D_B),
+ ID(ID_AHA_39320D_B_HP),
+ /* Generic chip probes for devices we don't know exactly. */
+ ID16(ID_AIC7901 & ID_9005_GENERIC_MASK),
+ ID(ID_AIC7901A & ID_DEV_VENDOR_MASK),
+ ID16(ID_AIC7902 & ID_9005_GENERIC_MASK),
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(pci, ahd_linux_pci_id_table);
+
+#ifdef CONFIG_PM
+static int
+ahd_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg)
+{
+ struct ahd_softc *ahd = pci_get_drvdata(pdev);
+ int rc;
+
+ if ((rc = ahd_suspend(ahd)))
+ return rc;
+
+ ahd_pci_suspend(ahd);
+
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+
+ if (mesg.event & PM_EVENT_SLEEP)
+ pci_set_power_state(pdev, PCI_D3hot);
+
+ return rc;
+}
+
+static int
+ahd_linux_pci_dev_resume(struct pci_dev *pdev)
+{
+ struct ahd_softc *ahd = pci_get_drvdata(pdev);
+ int rc;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+
+ if ((rc = pci_enable_device(pdev))) {
+ dev_printk(KERN_ERR, &pdev->dev,
+ "failed to enable device after resume (%d)\n", rc);
+ return rc;
+ }
+
+ pci_set_master(pdev);
+
+ ahd_pci_resume(ahd);
+
+ ahd_resume(ahd);
+
+ return rc;
+}
+#endif
+
+static void
+ahd_linux_pci_dev_remove(struct pci_dev *pdev)
+{
+ struct ahd_softc *ahd = pci_get_drvdata(pdev);
+ u_long s;
+
+ if (ahd->platform_data && ahd->platform_data->host)
+ scsi_remove_host(ahd->platform_data->host);
+
+ ahd_lock(ahd, &s);
+ ahd_intr_enable(ahd, FALSE);
+ ahd_unlock(ahd, &s);
+ ahd_free(ahd);
+}
+
+static void
+ahd_linux_pci_inherit_flags(struct ahd_softc *ahd)
+{
+ struct pci_dev *pdev = ahd->dev_softc, *master_pdev;
+ unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0);
+
+ master_pdev = pci_get_slot(pdev->bus, master_devfn);
+ if (master_pdev) {
+ struct ahd_softc *master = pci_get_drvdata(master_pdev);
+ if (master) {
+ ahd->flags &= ~AHD_BIOS_ENABLED;
+ ahd->flags |= master->flags & AHD_BIOS_ENABLED;
+ } else
+ printk(KERN_ERR "aic79xx: no multichannel peer found!\n");
+ pci_dev_put(master_pdev);
+ }
+}
+
+static int
+ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ char buf[80];
+ struct ahd_softc *ahd;
+ ahd_dev_softc_t pci;
+ const struct ahd_pci_identity *entry;
+ char *name;
+ int error;
+ struct device *dev = &pdev->dev;
+
+ pci = pdev;
+ entry = ahd_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, "ahd_pci:%d:%d:%d",
+ ahd_get_pci_bus(pci),
+ ahd_get_pci_slot(pci),
+ ahd_get_pci_function(pci));
+ name = kstrdup(buf, GFP_ATOMIC);
+ if (name == NULL)
+ return (-ENOMEM);
+ ahd = ahd_alloc(NULL, name);
+ if (ahd == NULL)
+ return (-ENOMEM);
+ if (pci_enable_device(pdev)) {
+ ahd_free(ahd);
+ return (-ENODEV);
+ }
+ pci_set_master(pdev);
+
+ if (sizeof(dma_addr_t) > 4) {
+ const u64 required_mask = dma_get_required_mask(dev);
+
+ if (required_mask > DMA_BIT_MASK(39) &&
+ dma_set_mask(dev, DMA_BIT_MASK(64)) == 0)
+ ahd->flags |= AHD_64BIT_ADDRESSING;
+ else if (required_mask > DMA_BIT_MASK(32) &&
+ dma_set_mask(dev, DMA_BIT_MASK(39)) == 0)
+ ahd->flags |= AHD_39BIT_ADDRESSING;
+ else
+ dma_set_mask(dev, DMA_BIT_MASK(32));
+ } else {
+ dma_set_mask(dev, DMA_BIT_MASK(32));
+ }
+ ahd->dev_softc = pci;
+ error = ahd_pci_config(ahd, entry);
+ if (error != 0) {
+ ahd_free(ahd);
+ return (-error);
+ }
+
+ /*
+ * Second Function PCI devices need to inherit some
+ * * settings from function 0.
+ */
+ if ((ahd->features & AHD_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0)
+ ahd_linux_pci_inherit_flags(ahd);
+
+ pci_set_drvdata(pdev, ahd);
+
+ ahd_linux_register_host(ahd, &aic79xx_driver_template);
+ return (0);
+}
+
+static struct pci_driver aic79xx_pci_driver = {
+ .name = "aic79xx",
+ .probe = ahd_linux_pci_dev_probe,
+#ifdef CONFIG_PM
+ .suspend = ahd_linux_pci_dev_suspend,
+ .resume = ahd_linux_pci_dev_resume,
+#endif
+ .remove = ahd_linux_pci_dev_remove,
+ .id_table = ahd_linux_pci_id_table
+};
+
+int
+ahd_linux_pci_init(void)
+{
+ return pci_register_driver(&aic79xx_pci_driver);
+}
+
+void
+ahd_linux_pci_exit(void)
+{
+ pci_unregister_driver(&aic79xx_pci_driver);
+}
+
+static int
+ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, resource_size_t *base,
+ resource_size_t *base2)
+{
+ *base = pci_resource_start(ahd->dev_softc, 0);
+ /*
+ * This is really the 3rd bar and should be at index 2,
+ * but the Linux PCI code doesn't know how to "count" 64bit
+ * bars.
+ */
+ *base2 = pci_resource_start(ahd->dev_softc, 3);
+ if (*base == 0 || *base2 == 0)
+ return (ENOMEM);
+ if (!request_region(*base, 256, "aic79xx"))
+ return (ENOMEM);
+ if (!request_region(*base2, 256, "aic79xx")) {
+ release_region(*base, 256);
+ return (ENOMEM);
+ }
+ return (0);
+}
+
+static int
+ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd,
+ resource_size_t *bus_addr,
+ uint8_t __iomem **maddr)
+{
+ resource_size_t start;
+ resource_size_t base_page;
+ u_long base_offset;
+ int error = 0;
+
+ if (aic79xx_allow_memio == 0)
+ return (ENOMEM);
+
+ if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) != 0)
+ return (ENOMEM);
+
+ start = pci_resource_start(ahd->dev_softc, 1);
+ base_page = start & PAGE_MASK;
+ base_offset = start - base_page;
+ if (start != 0) {
+ *bus_addr = start;
+ if (!request_mem_region(start, 0x1000, "aic79xx"))
+ error = ENOMEM;
+ if (!error) {
+ *maddr = ioremap_nocache(base_page, base_offset + 512);
+ if (*maddr == NULL) {
+ error = ENOMEM;
+ release_mem_region(start, 0x1000);
+ } else
+ *maddr += base_offset;
+ }
+ } else
+ error = ENOMEM;
+ return (error);
+}
+
+int
+ahd_pci_map_registers(struct ahd_softc *ahd)
+{
+ uint32_t command;
+ resource_size_t base;
+ uint8_t __iomem *maddr;
+ int error;
+
+ /*
+ * If its allowed, we prefer memory mapped access.
+ */
+ command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, 4);
+ command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
+ base = 0;
+ maddr = NULL;
+ error = ahd_linux_pci_reserve_mem_region(ahd, &base, &maddr);
+ if (error == 0) {
+ ahd->platform_data->mem_busaddr = base;
+ ahd->tags[0] = BUS_SPACE_MEMIO;
+ ahd->bshs[0].maddr = maddr;
+ ahd->tags[1] = BUS_SPACE_MEMIO;
+ ahd->bshs[1].maddr = maddr + 0x100;
+ ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
+ command | PCIM_CMD_MEMEN, 4);
+
+ if (ahd_pci_test_register_access(ahd) != 0) {
+
+ printk("aic79xx: PCI Device %d:%d:%d "
+ "failed memory mapped test. Using PIO.\n",
+ ahd_get_pci_bus(ahd->dev_softc),
+ ahd_get_pci_slot(ahd->dev_softc),
+ ahd_get_pci_function(ahd->dev_softc));
+ iounmap(maddr);
+ release_mem_region(ahd->platform_data->mem_busaddr,
+ 0x1000);
+ ahd->bshs[0].maddr = NULL;
+ maddr = NULL;
+ } else
+ command |= PCIM_CMD_MEMEN;
+ } else if (bootverbose) {
+ printk("aic79xx: PCI%d:%d:%d MEM region 0x%llx "
+ "unavailable. Cannot memory map device.\n",
+ ahd_get_pci_bus(ahd->dev_softc),
+ ahd_get_pci_slot(ahd->dev_softc),
+ ahd_get_pci_function(ahd->dev_softc),
+ (unsigned long long)base);
+ }
+
+ if (maddr == NULL) {
+ resource_size_t base2;
+
+ error = ahd_linux_pci_reserve_io_regions(ahd, &base, &base2);
+ if (error == 0) {
+ ahd->tags[0] = BUS_SPACE_PIO;
+ ahd->tags[1] = BUS_SPACE_PIO;
+ ahd->bshs[0].ioport = (u_long)base;
+ ahd->bshs[1].ioport = (u_long)base2;
+ command |= PCIM_CMD_PORTEN;
+ } else {
+ printk("aic79xx: PCI%d:%d:%d IO regions 0x%llx and "
+ "0x%llx unavailable. Cannot map device.\n",
+ ahd_get_pci_bus(ahd->dev_softc),
+ ahd_get_pci_slot(ahd->dev_softc),
+ ahd_get_pci_function(ahd->dev_softc),
+ (unsigned long long)base,
+ (unsigned long long)base2);
+ }
+ }
+ ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, 4);
+ return (error);
+}
+
+int
+ahd_pci_map_int(struct ahd_softc *ahd)
+{
+ int error;
+
+ error = request_irq(ahd->dev_softc->irq, ahd_linux_isr,
+ IRQF_SHARED, "aic79xx", ahd);
+ if (!error)
+ ahd->platform_data->irq = ahd->dev_softc->irq;
+
+ return (-error);
+}
+
+void
+ahd_power_state_change(struct ahd_softc *ahd, ahd_power_state new_state)
+{
+ pci_set_power_state(ahd->dev_softc, new_state);
+}
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