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path: root/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
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Diffstat (limited to 'drivers/scsi/aic7xxx/aic7xxx_osm_pci.c')
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm_pci.c470
1 files changed, 470 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 000000000..0fc14dac7
--- /dev/null
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -0,0 +1,470 @@
+/*
+ * 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"
+
+/* Define the macro locally since it's different for different class of chips.
+*/
+#define ID(x) ID_C(x, PCI_CLASS_STORAGE_SCSI)
+
+static const 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);
+
+#ifdef CONFIG_PM
+static int
+ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg)
+{
+ struct ahc_softc *ahc = pci_get_drvdata(pdev);
+ int rc;
+
+ if ((rc = ahc_suspend(ahc)))
+ return rc;
+
+ 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
+ahc_linux_pci_dev_resume(struct pci_dev *pdev)
+{
+ struct ahc_softc *ahc = 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);
+
+ ahc_pci_resume(ahc);
+
+ return (ahc_resume(ahc));
+}
+#endif
+
+static void
+ahc_linux_pci_dev_remove(struct pci_dev *pdev)
+{
+ struct ahc_softc *ahc = pci_get_drvdata(pdev);
+ u_long s;
+
+ if (ahc->platform_data && ahc->platform_data->host)
+ scsi_remove_host(ahc->platform_data->host);
+
+ ahc_lock(ahc, &s);
+ ahc_intr_enable(ahc, FALSE);
+ ahc_unlock(ahc, &s);
+ ahc_free(ahc);
+}
+
+static void
+ahc_linux_pci_inherit_flags(struct ahc_softc *ahc)
+{
+ struct pci_dev *pdev = ahc->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 ahc_softc *master = pci_get_drvdata(master_pdev);
+ if (master) {
+ ahc->flags &= ~AHC_BIOS_ENABLED;
+ ahc->flags |= master->flags & AHC_BIOS_ENABLED;
+
+ ahc->flags &= ~AHC_PRIMARY_CHANNEL;
+ ahc->flags |= master->flags & AHC_PRIMARY_CHANNEL;
+ } else
+ printk(KERN_ERR "aic7xxx: no multichannel peer found!\n");
+ pci_dev_put(master_pdev);
+ }
+}
+
+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;
+ const struct ahc_pci_identity *entry;
+ char *name;
+ int error;
+ struct device *dev = &pdev->dev;
+
+ 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 = kstrdup(buf, GFP_ATOMIC);
+ if (name == NULL)
+ return (-ENOMEM);
+ 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->features & AHC_LARGE_SCBS
+ && dma_set_mask(dev, mask_39bit) == 0
+ && dma_get_required_mask(dev) > DMA_BIT_MASK(32)) {
+ ahc->flags |= AHC_39BIT_ADDRESSING;
+ } else {
+ if (dma_set_mask(dev, DMA_BIT_MASK(32))) {
+ ahc_free(ahc);
+ printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
+ return (-ENODEV);
+ }
+ }
+ ahc->dev_softc = pci;
+ error = ahc_pci_config(ahc, entry);
+ if (error != 0) {
+ ahc_free(ahc);
+ return (-error);
+ }
+
+ /*
+ * Second Function PCI devices need to inherit some
+ * settings from function 0.
+ */
+ if ((ahc->features & AHC_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0)
+ ahc_linux_pci_inherit_flags(ahc);
+
+ pci_set_drvdata(pdev, ahc);
+ ahc_linux_register_host(ahc, &aic7xxx_driver_template);
+ return (0);
+}
+
+/******************************* PCI Routines *********************************/
+uint32_t
+ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
+{
+ switch (width) {
+ case 1:
+ {
+ uint8_t retval;
+
+ pci_read_config_byte(pci, reg, &retval);
+ return (retval);
+ }
+ case 2:
+ {
+ uint16_t retval;
+ pci_read_config_word(pci, reg, &retval);
+ return (retval);
+ }
+ case 4:
+ {
+ uint32_t retval;
+ pci_read_config_dword(pci, reg, &retval);
+ return (retval);
+ }
+ default:
+ panic("ahc_pci_read_config: Read size too big");
+ /* NOTREACHED */
+ return (0);
+ }
+}
+
+void
+ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
+{
+ switch (width) {
+ case 1:
+ pci_write_config_byte(pci, reg, value);
+ break;
+ case 2:
+ pci_write_config_word(pci, reg, value);
+ break;
+ case 4:
+ pci_write_config_dword(pci, reg, value);
+ break;
+ default:
+ panic("ahc_pci_write_config: Write size too big");
+ /* NOTREACHED */
+ }
+}
+
+
+static struct pci_driver aic7xxx_pci_driver = {
+ .name = "aic7xxx",
+ .probe = ahc_linux_pci_dev_probe,
+#ifdef CONFIG_PM
+ .suspend = ahc_linux_pci_dev_suspend,
+ .resume = ahc_linux_pci_dev_resume,
+#endif
+ .remove = ahc_linux_pci_dev_remove,
+ .id_table = ahc_linux_pci_id_table
+};
+
+int
+ahc_linux_pci_init(void)
+{
+ return pci_register_driver(&aic7xxx_pci_driver);
+}
+
+void
+ahc_linux_pci_exit(void)
+{
+ pci_unregister_driver(&aic7xxx_pci_driver);
+}
+
+static int
+ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, resource_size_t *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"))
+ return (ENOMEM);
+ return (0);
+}
+
+static int
+ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
+ resource_size_t *bus_addr,
+ uint8_t __iomem **maddr)
+{
+ resource_size_t 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"))
+ 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;
+ resource_size_t 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) {
+
+ printk("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 {
+ printk("aic7xxx: PCI%d:%d:%d MEM region 0x%llx "
+ "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),
+ (unsigned long long)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 = (u_long)base;
+ command |= PCIM_CMD_PORTEN;
+ } else {
+ printk("aic7xxx: PCI%d:%d:%d IO region 0x%llx[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),
+ (unsigned long long)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,
+ IRQF_SHARED, "aic7xxx", ahc);
+ if (error == 0)
+ ahc->platform_data->irq = ahc->dev_softc->irq;
+
+ return (-error);
+}
+
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