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path: root/drivers/ide/pci/sgiioc4.c
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Diffstat (limited to 'drivers/ide/pci/sgiioc4.c')
-rw-r--r--drivers/ide/pci/sgiioc4.c101
1 files changed, 33 insertions, 68 deletions
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index 681306c9d79b..8af9b23499fd 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -1,5 +1,6 @@
/*
* Copyright (c) 2003-2006 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (C) 2008 MontaVista Software, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
@@ -22,7 +23,6 @@
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
-#include <linux/hdreg.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
@@ -101,18 +101,8 @@ sgiioc4_init_hwif_ports(hw_regs_t * hw, unsigned long data_port,
for (i = 0; i <= 7; i++)
hw->io_ports_array[i] = reg + i * 4;
- if (ctrl_port)
- hw->io_ports.ctl_addr = ctrl_port;
-
- if (irq_port)
- hw->io_ports.irq_addr = irq_port;
-}
-
-static void
-sgiioc4_maskproc(ide_drive_t * drive, int mask)
-{
- writeb(ATA_DEVCTL_OBS | (mask ? 2 : 0),
- (void __iomem *)drive->hwif->io_ports.ctl_addr);
+ hw->io_ports.ctl_addr = ctrl_port;
+ hw->io_ports.irq_addr = irq_port;
}
static int
@@ -151,7 +141,7 @@ sgiioc4_clearirq(ide_drive_t * drive)
int count = 0;
stat = sgiioc4_read_status(hwif);
- while ((stat & 0x80) && (count++ < 100)) {
+ while ((stat & ATA_BUSY) && (count++ < 100)) {
udelay(1);
stat = sgiioc4_read_status(hwif);
}
@@ -310,16 +300,14 @@ static u8 sgiioc4_read_status(ide_hwif_t *hwif)
unsigned long port = hwif->io_ports.status_addr;
u8 reg = (u8) readb((void __iomem *) port);
- if ((port & 0xFFF) == 0x11C) { /* Status register of IOC4 */
- if (reg & 0x51) { /* Not busy...check for interrupt */
- unsigned long other_ir = port - 0x110;
- unsigned int intr_reg = (u32) readl((void __iomem *) other_ir);
+ if (!(reg & ATA_BUSY)) { /* Not busy... check for interrupt */
+ unsigned long other_ir = port - 0x110;
+ unsigned int intr_reg = (u32) readl((void __iomem *) other_ir);
- /* Clear the Interrupt, Error bits on the IOC4 */
- if (intr_reg & 0x03) {
- writel(0x03, (void __iomem *) other_ir);
- intr_reg = (u32) readl((void __iomem *) other_ir);
- }
+ /* Clear the Interrupt, Error bits on the IOC4 */
+ if (intr_reg & 0x03) {
+ writel(0x03, (void __iomem *) other_ir);
+ intr_reg = (u32) readl((void __iomem *) other_ir);
}
}
@@ -332,42 +320,28 @@ ide_dma_sgiioc4(ide_hwif_t *hwif, const struct ide_port_info *d)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned long dma_base = pci_resource_start(dev, 0) + IOC4_DMA_OFFSET;
- void __iomem *virt_dma_base;
int num_ports = sizeof (ioc4_dma_regs_t);
void *pad;
- if (dma_base == 0)
- return -1;
+ printk(KERN_INFO " %s: MMIO-DMA\n", hwif->name);
- printk(KERN_INFO "%s: BM-DMA at 0x%04lx-0x%04lx\n", hwif->name,
- dma_base, dma_base + num_ports - 1);
-
- if (!request_mem_region(dma_base, num_ports, hwif->name)) {
- printk(KERN_ERR
- "%s(%s) -- ERROR, Addresses 0x%p to 0x%p "
- "ALREADY in use\n",
- __func__, hwif->name, (void *) dma_base,
- (void *) dma_base + num_ports - 1);
+ if (request_mem_region(dma_base, num_ports, hwif->name) == NULL) {
+ printk(KERN_ERR "%s(%s) -- ERROR: addresses 0x%08lx to 0x%08lx "
+ "already in use\n", __func__, hwif->name,
+ dma_base, dma_base + num_ports - 1);
return -1;
}
- virt_dma_base = ioremap(dma_base, num_ports);
- if (virt_dma_base == NULL) {
- printk(KERN_ERR
- "%s(%s) -- ERROR, Unable to map addresses 0x%lx to 0x%lx\n",
- __func__, hwif->name, dma_base, dma_base + num_ports - 1);
- goto dma_remap_failure;
- }
- hwif->dma_base = (unsigned long) virt_dma_base;
+ hwif->dma_base = (unsigned long)hwif->io_ports.irq_addr +
+ IOC4_DMA_OFFSET;
- hwif->dmatable_cpu = pci_alloc_consistent(dev,
- IOC4_PRD_ENTRIES * IOC4_PRD_BYTES,
- &hwif->dmatable_dma);
+ hwif->sg_max_nents = IOC4_PRD_ENTRIES;
- if (!hwif->dmatable_cpu)
- goto dma_pci_alloc_failure;
+ hwif->prd_max_nents = IOC4_PRD_ENTRIES;
+ hwif->prd_ent_size = IOC4_PRD_BYTES;
- hwif->sg_max_nents = IOC4_PRD_ENTRIES;
+ if (ide_allocate_dma_engine(hwif))
+ goto dma_pci_alloc_failure;
pad = pci_alloc_consistent(dev, IOC4_IDE_CACHELINE_SIZE,
(dma_addr_t *)&hwif->extra_base);
@@ -376,18 +350,13 @@ ide_dma_sgiioc4(ide_hwif_t *hwif, const struct ide_port_info *d)
return 0;
}
- pci_free_consistent(dev, IOC4_PRD_ENTRIES * IOC4_PRD_BYTES,
- hwif->dmatable_cpu, hwif->dmatable_dma);
- printk(KERN_INFO
- "%s() -- Error! Unable to allocate DMA Maps for drive %s\n",
+ ide_release_dma_engine(hwif);
+
+ printk(KERN_ERR "%s(%s) -- ERROR: Unable to allocate DMA maps\n",
__func__, hwif->name);
- printk(KERN_INFO
- "Changing from DMA to PIO mode for Drive %s\n", hwif->name);
+ printk(KERN_INFO "%s: changing from DMA to PIO mode", hwif->name);
dma_pci_alloc_failure:
- iounmap(virt_dma_base);
-
-dma_remap_failure:
release_mem_region(dma_base, num_ports);
return -1;
@@ -569,8 +538,6 @@ static const struct ide_port_ops sgiioc4_port_ops = {
.set_dma_mode = sgiioc4_set_dma_mode,
/* reset DMA engine, clear IRQs */
.resetproc = sgiioc4_resetproc,
- /* mask on/off NIEN register */
- .maskproc = sgiioc4_maskproc,
};
static const struct ide_dma_ops sgiioc4_dma_ops = {
@@ -618,14 +585,12 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
irqport = (unsigned long) virt_base + IOC4_INTR_OFFSET;
cmd_phys_base = bar0 + IOC4_CMD_OFFSET;
- if (!request_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE,
- DRV_NAME)) {
- printk(KERN_ERR
- "%s %s: -- ERROR, Addresses "
- "0x%p to 0x%p ALREADY in use\n",
- DRV_NAME, pci_name(dev), (void *)cmd_phys_base,
- (void *) cmd_phys_base + IOC4_CMD_CTL_BLK_SIZE);
- return -ENOMEM;
+ if (request_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE,
+ DRV_NAME) == NULL) {
+ printk(KERN_ERR "%s %s -- ERROR: addresses 0x%08lx to 0x%08lx "
+ "already in use\n", DRV_NAME, pci_name(dev),
+ cmd_phys_base, cmd_phys_base + IOC4_CMD_CTL_BLK_SIZE);
+ return -EBUSY;
}
/* Initialize the IO registers */
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-08 01:35:38 +0000