[SCSI] aacraid: Newer adapter communication iterface support
Received from Mark Salyzyn.
This patch adds the 'new comm' interface, which modern AAC based
adapters that are less than a year old support in the name of much
improved performance. These modern adapters support both the legacy and
the 'new comm' interfaces.
Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 59a341b..82821d3 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -116,6 +116,10 @@
}
init->InitFlags = 0;
+ if (dev->new_comm_interface) {
+ init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
+ dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
+ }
init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
@@ -315,12 +319,33 @@
- sizeof(struct aac_fibhdr)
- sizeof(struct aac_write) + sizeof(struct sgentry))
/ sizeof(struct sgentry);
+ dev->new_comm_interface = 0;
dev->raw_io_64 = 0;
if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
(status[0] == 0x00000001)) {
if (status[1] & AAC_OPT_NEW_COMM_64)
dev->raw_io_64 = 1;
+ if (status[1] & AAC_OPT_NEW_COMM)
+ dev->new_comm_interface = dev->a_ops.adapter_send != 0;
+ if (dev->new_comm_interface && (status[2] > dev->base_size)) {
+ iounmap(dev->regs.sa);
+ dev->base_size = status[2];
+ dprintk((KERN_DEBUG "ioremap(%lx,%d)\n",
+ host->base, status[2]));
+ dev->regs.sa = ioremap(host->base, status[2]);
+ if (dev->regs.sa == NULL) {
+ /* remap failed, go back ... */
+ dev->new_comm_interface = 0;
+ dev->regs.sa = ioremap(host->base,
+ AAC_MIN_FOOTPRINT_SIZE);
+ if (dev->regs.sa == NULL) {
+ printk(KERN_WARNING
+ "aacraid: unable to map adapter.\n");
+ return NULL;
+ }
+ }
+ }
}
if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
0, 0, 0, 0, 0, 0,