[PATCH] I2O: Adaptec specific SG_IO access, firmware access through sysfs and 2400A workaround

Changes:
 - Provide SG_IO access to BLOCK and EXECUTIVE class on Adaptec
   controllers
 - Use PRIVATE messages in SCSI-OSM because on some controllers normal
   SCSI class commands like READ or READ CAPACITY cause errors
 - Use new DMA and SG list creation function
 - Added workaround to limit sectors per request for Adaptec 2400A
   controllers

Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/message/i2o/pci.c b/drivers/message/i2o/pci.c
index a499af096a68..964fe481849e 100644
--- a/drivers/message/i2o/pci.c
+++ b/drivers/message/i2o/pci.c
@@ -362,11 +362,33 @@ static int __devinit i2o_pci_probe(struct pci_dev *pdev,
                 c->promise = 1;
         }
 
+        if (pdev->subsystem_vendor == PCI_VENDOR_ID_DPT)
+                c->adaptec = 1;
+
         /* Cards that go bananas if you quiesce them before you reset them. */
         if (pdev->vendor == PCI_VENDOR_ID_DPT) {
                 c->no_quiesce = 1;
                 if (pdev->device == 0xa511)
                         c->raptor = 1;
+
+                if (pdev->subsystem_device == 0xc05a) {
+                        c->limit_sectors = 1;
+                        printk(KERN_INFO
+                               "%s: limit sectors per request to %d\n", c->name,
+                               I2O_MAX_SECTORS_LIMITED);
+                }
+#ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
+                if (sizeof(dma_addr_t) > 4) {
+                        if (pci_set_dma_mask(pdev, DMA_64BIT_MASK))
+                                printk(KERN_INFO "%s: 64-bit DMA unavailable\n",
+                                       c->name);
+                        else {
+                                c->pae_support = 1;
+                                printk(KERN_INFO "%s: using 64-bit DMA\n",
+                                       c->name);
+                        }
+                }
+#endif
         }
 
         if ((rc = i2o_pci_alloc(c))) {