Written By: Adam Radford <linuxraid@amcc.com>
Modifications By: Tom Couch <linuxraid@amcc.com>
- Copyright (C) 2004-2007 Applied Micro Circuits Corporation.
+ Copyright (C) 2004-2009 Applied Micro Circuits Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
Add support for 9650SE controllers.
2.26.02.009 - Fix dma mask setting to fallback to 32-bit if 64-bit fails.
2.26.02.010 - Add support for 9690SA controllers.
+ 2.26.02.011 - Increase max AENs drained to 256.
+ Add MSI support and "use_msi" module parameter.
+ Fix bug in twa_get_param() on 4GB+.
+ Use pci_resource_len() for ioremap().
+ 2.26.02.012 - Add power management support.
+ 2.26.02.013 - Fix bug in twa_load_sgl().
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/time.h>
#include <linux/mutex.h>
+#include <linux/smp_lock.h>
+#include <linux/slab.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include "3w-9xxx.h"
/* Globals */
-#define TW_DRIVER_VERSION "2.26.02.010"
+#define TW_DRIVER_VERSION "2.26.02.013"
static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT];
static unsigned int twa_device_extension_count;
static int twa_major = -1;
MODULE_LICENSE("GPL");
MODULE_VERSION(TW_DRIVER_VERSION);
+static int use_msi = 0;
+module_param(use_msi, int, S_IRUGO);
+MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0");
+
/* Function prototypes */
static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header);
static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id);
/* Functions */
/* Show some statistics about the card */
-static ssize_t twa_show_stats(struct class_device *class_dev, char *buf)
+static ssize_t twa_show_stats(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct Scsi_Host *host = class_to_shost(class_dev);
+ struct Scsi_Host *host = class_to_shost(dev);
TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
unsigned long flags = 0;
ssize_t len;
} /* End twa_show_stats() */
/* This function will set a devices queue depth */
-static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth)
+static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth,
+ int reason)
{
+ if (reason != SCSI_QDEPTH_DEFAULT)
+ return -EOPNOTSUPP;
+
if (queue_depth > TW_Q_LENGTH-2)
queue_depth = TW_Q_LENGTH-2;
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
} /* End twa_change_queue_depth() */
/* Create sysfs 'stats' entry */
-static struct class_device_attribute twa_host_stats_attr = {
+static struct device_attribute twa_host_stats_attr = {
.attr = {
.name = "stats",
.mode = S_IRUGO,
};
/* Host attributes initializer */
-static struct class_device_attribute *twa_host_attrs[] = {
+static struct device_attribute *twa_host_attrs[] = {
&twa_host_stats_attr,
NULL,
};
break;
case TW_IOCTL_GET_COMPATIBILITY_INFO:
tw_ioctl->driver_command.status = 0;
- /* Copy compatiblity struct into ioctl data buffer */
+ /* Copy compatibility struct into ioctl data buffer */
tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer;
memcpy(tw_compat_info, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info));
break;
} /* End twa_chrdev_ioctl() */
/* This function handles open for the character device */
+/* NOTE that this function will race with remove. */
static int twa_chrdev_open(struct inode *inode, struct file *file)
{
unsigned int minor_number;
int retval = TW_IOCTL_ERROR_OS_ENODEV;
+ cycle_kernel_lock();
minor_number = iminor(inode);
if (minor_number >= twa_device_extension_count)
goto out;
TW_Command_Full *full_command_packet;
TW_Command *command_packet;
TW_Param_Apache *param;
- unsigned long param_value;
void *retval = NULL;
/* Setup the command packet */
param->table_id = cpu_to_le16(table_id | 0x8000);
param->parameter_id = cpu_to_le16(parameter_id);
param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes);
- param_value = tw_dev->generic_buffer_phys[request_id];
- command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(param_value);
+ command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE);
/* Post the command packet to the board */
error = 0;
/* Check for command packet errors */
if (full_command_packet->command.newcommand.status != 0) {
- if (tw_dev->srb[request_id] != 0) {
+ if (tw_dev->srb[request_id] != NULL) {
error = twa_fill_sense(tw_dev, request_id, 1, 1);
} else {
/* Skip ioctl error prints */
/* Check for correct state */
if (tw_dev->state[request_id] != TW_S_POSTED) {
- if (tw_dev->srb[request_id] != 0) {
+ if (tw_dev->srb[request_id] != NULL) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted");
TW_CLEAR_ALL_INTERRUPTS(tw_dev);
goto twa_interrupt_bail;
}
/* Check for internal command completion */
- if (tw_dev->srb[request_id] == 0) {
+ if (tw_dev->srb[request_id] == NULL) {
if (request_id != tw_dev->chrdev_request_id) {
if (twa_aen_complete(tw_dev, request_id))
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt");
newcommand = &full_command_packet->command.newcommand;
newcommand->request_id__lunl =
cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id));
- newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
- newcommand->sg_list[0].length = cpu_to_le32(length);
+ if (length) {
+ newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
+ newcommand->sg_list[0].length = cpu_to_le32(length);
+ }
newcommand->sgl_entries__lunh =
- cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), 1));
+ cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0));
} else {
oldcommand = &full_command_packet->command.oldcommand;
oldcommand->request_id = request_id;
if (scsi_sg_count(srb)) {
if ((scsi_sg_count(srb) == 1) &&
(scsi_bufflen(srb) < TW_MIN_SGL_LENGTH)) {
- if (srb->sc_data_direction == DMA_TO_DEVICE || srb->sc_data_direction == DMA_BIDIRECTIONAL) {
- struct scatterlist *sg = scsi_sglist(srb);
- char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
- memcpy(tw_dev->generic_buffer_virt[request_id], buf, sg->length);
- kunmap_atomic(buf - sg->offset, KM_IRQ0);
- }
+ if (srb->sc_data_direction == DMA_TO_DEVICE ||
+ srb->sc_data_direction == DMA_BIDIRECTIONAL)
+ scsi_sg_copy_to_buffer(srb,
+ tw_dev->generic_buffer_virt[request_id],
+ TW_SECTOR_SIZE);
command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH);
} else {
(cmd->sc_data_direction == DMA_FROM_DEVICE ||
cmd->sc_data_direction == DMA_BIDIRECTIONAL)) {
if (scsi_sg_count(cmd) == 1) {
- struct scatterlist *sg = scsi_sglist(tw_dev->srb[request_id]);
- char *buf;
- unsigned long flags = 0;
- local_irq_save(flags);
- buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
- memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length);
- kunmap_atomic(buf - sg->offset, KM_IRQ0);
- local_irq_restore(flags);
+ void *buf = tw_dev->generic_buffer_virt[request_id];
+
+ scsi_sg_copy_from_buffer(cmd, buf, TW_SECTOR_SIZE);
}
}
} /* End twa_scsiop_execute_scsi_complete() */
{
struct scsi_cmnd *cmd = tw_dev->srb[request_id];
- scsi_dma_unmap(cmd);
+ if (cmd->SCp.phase == TW_PHASE_SGLIST)
+ scsi_dma_unmap(cmd);
} /* End twa_unmap_scsi_data() */
/* scsi_host_template initializer */
{
struct Scsi_Host *host = NULL;
TW_Device_Extension *tw_dev;
- u32 mem_addr;
+ unsigned long mem_addr, mem_len;
int retval = -ENODEV;
retval = pci_enable_device(pdev);
}
pci_set_master(pdev);
+ pci_try_set_mwi(pdev);
- if (pci_set_dma_mask(pdev, DMA_64BIT_MASK)
- || pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
- if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)
- || pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
+ || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
+ || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask");
retval = -ENODEV;
goto out_disable_device;
}
tw_dev = (TW_Device_Extension *)host->hostdata;
- memset(tw_dev, 0, sizeof(TW_Device_Extension));
-
/* Save values to device extension */
tw_dev->host = host;
tw_dev->tw_pci_dev = pdev;
goto out_free_device_extension;
}
- if (pdev->device == PCI_DEVICE_ID_3WARE_9000)
+ if (pdev->device == PCI_DEVICE_ID_3WARE_9000) {
mem_addr = pci_resource_start(pdev, 1);
- else
+ mem_len = pci_resource_len(pdev, 1);
+ } else {
mem_addr = pci_resource_start(pdev, 2);
+ mem_len = pci_resource_len(pdev, 2);
+ }
/* Save base address */
- tw_dev->base_addr = ioremap(mem_addr, PAGE_SIZE);
+ tw_dev->base_addr = ioremap(mem_addr, mem_len);
if (!tw_dev->base_addr) {
TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap");
goto out_release_mem_region;
pci_set_drvdata(pdev, host);
- printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%x, IRQ: %d.\n",
+ printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%lx, IRQ: %d.\n",
host->host_no, mem_addr, pdev->irq);
printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n",
host->host_no,
le32_to_cpu(*(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE,
TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH)));
+ /* Try to enable MSI */
+ if (use_msi && (pdev->device != PCI_DEVICE_ID_3WARE_9000) &&
+ !pci_enable_msi(pdev))
+ set_bit(TW_USING_MSI, &tw_dev->flags);
+
/* Now setup the interrupt handler */
retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev);
if (retval) {
return 0;
out_remove_host:
+ if (test_bit(TW_USING_MSI, &tw_dev->flags))
+ pci_disable_msi(pdev);
scsi_remove_host(host);
out_iounmap:
iounmap(tw_dev->base_addr);
/* Shutdown the card */
__twa_shutdown(tw_dev);
+ /* Disable MSI if enabled */
+ if (test_bit(TW_USING_MSI, &tw_dev->flags))
+ pci_disable_msi(pdev);
+
/* Free IO remapping */
iounmap(tw_dev->base_addr);
twa_device_extension_count--;
} /* End twa_remove() */
+#ifdef CONFIG_PM
+/* This function is called on PCI suspend */
+static int twa_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
+
+ printk(KERN_WARNING "3w-9xxx: Suspending host %d.\n", tw_dev->host->host_no);
+
+ TW_DISABLE_INTERRUPTS(tw_dev);
+ free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
+
+ if (test_bit(TW_USING_MSI, &tw_dev->flags))
+ pci_disable_msi(pdev);
+
+ /* Tell the card we are shutting down */
+ if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x38, "Connection shutdown failed during suspend");
+ } else {
+ printk(KERN_WARNING "3w-9xxx: Suspend complete.\n");
+ }
+ TW_CLEAR_ALL_INTERRUPTS(tw_dev);
+
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+ return 0;
+} /* End twa_suspend() */
+
+/* This function is called on PCI resume */
+static int twa_resume(struct pci_dev *pdev)
+{
+ int retval = 0;
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
+
+ printk(KERN_WARNING "3w-9xxx: Resuming host %d.\n", tw_dev->host->host_no);
+ pci_set_power_state(pdev, PCI_D0);
+ pci_enable_wake(pdev, PCI_D0, 0);
+ pci_restore_state(pdev);
+
+ retval = pci_enable_device(pdev);
+ if (retval) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x39, "Enable device failed during resume");
+ return retval;
+ }
+
+ pci_set_master(pdev);
+ pci_try_set_mwi(pdev);
+
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
+ || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
+ || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
+ TW_PRINTK(host, TW_DRIVER, 0x40, "Failed to set dma mask during resume");
+ retval = -ENODEV;
+ goto out_disable_device;
+ }
+
+ /* Initialize the card */
+ if (twa_reset_sequence(tw_dev, 0)) {
+ retval = -ENODEV;
+ goto out_disable_device;
+ }
+
+ /* Now setup the interrupt handler */
+ retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev);
+ if (retval) {
+ TW_PRINTK(tw_dev->host, TW_DRIVER, 0x42, "Error requesting IRQ during resume");
+ retval = -ENODEV;
+ goto out_disable_device;
+ }
+
+ /* Now enable MSI if enabled */
+ if (test_bit(TW_USING_MSI, &tw_dev->flags))
+ pci_enable_msi(pdev);
+
+ /* Re-enable interrupts on the card */
+ TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
+
+ printk(KERN_WARNING "3w-9xxx: Resume complete.\n");
+ return 0;
+
+out_disable_device:
+ scsi_remove_host(host);
+ pci_disable_device(pdev);
+
+ return retval;
+} /* End twa_resume() */
+#endif
+
/* PCI Devices supported by this driver */
static struct pci_device_id twa_pci_tbl[] __devinitdata = {
{ PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000,
.id_table = twa_pci_tbl,
.probe = twa_probe,
.remove = twa_remove,
+#ifdef CONFIG_PM
+ .suspend = twa_suspend,
+ .resume = twa_resume,
+#endif
.shutdown = twa_shutdown
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff