384 lines
11 KiB
C
384 lines
11 KiB
C
/*
|
|
* 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 = 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;
|
|
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 = 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->features & AHC_LARGE_SCBS
|
|
&& dma_set_mask(dev, mask_39bit) == 0
|
|
&& dma_get_required_mask(dev) > DMA_32BIT_MASK) {
|
|
ahc->flags |= AHC_39BIT_ADDRESSING;
|
|
} else {
|
|
if (dma_set_mask(dev, DMA_32BIT_MASK)) {
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|