trm290: cannot call ide_setup_dma()

The TRM-290 chip is *not* SFF-8038i compatible and therefore can *not* call
ide_setup_dma() -- fix this and also cleanup the code a bit...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 38 insertions, 26 deletions

diff --git a/drivers/ide/pci/trm290.c b/drivers/ide/pci/trm290.c
index 04cd893e1ab..7b033889069 100644
--- a/drivers/ide/pci/trm290.c
+++ b/drivers/ide/pci/trm290.c
@@ -1,5 +1,5 @@
 /*
- *  linux/drivers/ide/pci/trm290.c              Version 1.05    Dec. 26, 2007
+ *  linux/drivers/ide/pci/trm290.c              Version 1.05    Dec. 30, 2007
  *
  *  Copyright (c) 1997-1998  Mark Lord
  *  Copyright (c) 2007       MontaVista Software, Inc. <source@mvista.com>
@@ -209,10 +209,10 @@ static int trm290_dma_setup(ide_drive_t *drive)
         }
         /* select DMA xfer */
         trm290_prepare_drive(drive, 1);
-        outl(hwif->dmatable_dma | rw, hwif->dma_command);
+        outl(hwif->dmatable_dma | rw, hwif->dma_base);
         drive->waiting_for_dma = 1;
         /* start DMA */
-        outw((count * 2) - 1, hwif->dma_status);
+        outw(count * 2 - 1, hwif->dma_base + 2);
         return 0;
 }
 
@@ -222,23 +222,21 @@ static void trm290_dma_start(ide_drive_t *drive)
 
 static int trm290_ide_dma_end (ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = HWIF(drive);
-        u16 status = 0;
+        u16 status;
 
         drive->waiting_for_dma = 0;
         /* purge DMA mappings */
         ide_destroy_dmatable(drive);
-        status = inw(hwif->dma_status);
-        return (status != 0x00ff);
+        status = inw(HWIF(drive)->dma_base + 2);
+        return status != 0x00ff;
 }
 
 static int trm290_ide_dma_test_irq (ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = HWIF(drive);
-        u16 status = 0;
+        u16 status;
 
-        status = inw(hwif->dma_status);
-        return (status == 0x00ff);
+        status = inw(HWIF(drive)->dma_base + 2);
+        return status == 0x00ff;
 }
 
 static void trm290_dma_host_set(ide_drive_t *drive, int on)
@@ -247,21 +245,37 @@ static void trm290_dma_host_set(ide_drive_t *drive, int on)
 
 static void __devinit init_hwif_trm290(ide_hwif_t *hwif)
 {
-        unsigned int cfgbase = 0;
+        struct pci_dev *dev     = hwif->pci_dev;
+        unsigned int  cfg_base  = pci_resource_start(dev, 4);
         unsigned long flags;
         u8 reg = 0;
-        struct pci_dev *dev = hwif->pci_dev;
-
-        cfgbase = pci_resource_start(dev, 4);
-        if ((dev->class & 5) && cfgbase) {
-                hwif->config_data = cfgbase;
-                printk(KERN_INFO "TRM290: chip config base at 0x%04lx\n",
-                        hwif->config_data);
-        } else {
-                hwif->config_data = 0x3df0;
-                printk(KERN_INFO "TRM290: using default config base at 0x%04lx\n",
-                        hwif->config_data);
+
+        if ((dev->class & 5) && cfg_base)
+                printk(KERN_INFO "TRM290: chip");
+        else {
+                cfg_base = 0x3df0;
+                printk(KERN_INFO "TRM290: using default");
         }
+        printk(KERN_CONT " config base at 0x%04x\n", cfg_base);
+        hwif->config_data = cfg_base;
+        hwif->dma_base = (cfg_base + 4) ^ (hwif->channel ? 0x80 : 0);
+
+        printk(KERN_INFO "    %s: BM-DMA at 0x%04lx-0x%04lx",
+               hwif->name, hwif->dma_base, hwif->dma_base + 3);
+
+        if (!request_region(hwif->dma_base, 4, hwif->name)) {
+                printk(KERN_CONT " -- Error, ports in use.\n");
+                return;
+        }
+
+        hwif->dmatable_cpu = pci_alloc_consistent(dev, PRD_ENTRIES * PRD_BYTES,
+                                                  &hwif->dmatable_dma);
+        if (!hwif->dmatable_cpu) {
+                printk(KERN_CONT " -- Error, unable to allocate DMA table.\n");
+                release_region(hwif->dma_base, 4);
+                return;
+        }
+        printk(KERN_CONT "\n");
 
         local_irq_save(flags);
         /* put config reg into first byte of hwif->select_data */
@@ -276,15 +290,13 @@ static void __devinit init_hwif_trm290(ide_hwif_t *hwif)
         outb(reg, hwif->config_data + 3);
         local_irq_restore(flags);
 
-        if ((reg & 0x10))
+        if (reg & 0x10)
                 /* legacy mode */
                 hwif->irq = hwif->channel ? 15 : 14;
         else if (!hwif->irq && hwif->mate && hwif->mate->irq)
                 /* sharing IRQ with mate */
                 hwif->irq = hwif->mate->irq;
 
-        ide_setup_dma(hwif, (hwif->config_data + 4) ^ (hwif->channel ? 0x0080 : 0x0000), 3);
-
         hwif->dma_host_set      = &trm290_dma_host_set;
         hwif->dma_setup         = &trm290_dma_setup;
         hwif->dma_exec_cmd      = &trm290_dma_exec_cmd;