Received from Mark Salyzyn from Adaptec:
This patch adds support for the new raw io command. This new command
offers much larger io commands, is more friendly to the internal firmware
structure requiring less translation efforts by the firmware and offers
support for targets greater than 2TB (patch to support >2TB will
be sent in the future).
Applies to scsi-misc-2.6 git tree
Signed-off-by: Mark Haverkamp <markh@xxxxxxxx>
Index: scsi-misc-aac-1/drivers/scsi/aacraid/aachba.c
===================================================================
--- scsi-misc-aac-1.orig/drivers/scsi/aacraid/aachba.c 2005-07-05 13:55:51.000000000 -0700
+++ scsi-misc-aac-1/drivers/scsi/aacraid/aachba.c 2005-07-05 15:12:05.000000000 -0700
@@ -133,6 +133,7 @@
static unsigned long aac_build_sg(struct scsi_cmnd* scsicmd, struct sgmap* sgmap);
static unsigned long aac_build_sg64(struct scsi_cmnd* scsicmd, struct sgmap64* psg);
+static unsigned long aac_build_sgraw(struct scsi_cmnd* scsicmd, struct sgmapraw* psg);
static int aac_send_srb_fib(struct scsi_cmnd* scsicmd);
#ifdef AAC_DETAILED_STATUS_INFO
static char *aac_get_status_string(u32 status);
@@ -777,34 +778,36 @@
/*
* 57 scatter gather elements
*/
- dev->scsi_host_ptr->sg_tablesize = (dev->max_fib_size -
- sizeof(struct aac_fibhdr) -
- sizeof(struct aac_write) + sizeof(struct sgmap)) /
- sizeof(struct sgmap);
- if (dev->dac_support) {
- /*
- * 38 scatter gather elements
- */
- dev->scsi_host_ptr->sg_tablesize =
- (dev->max_fib_size -
+ if (!(dev->raw_io_interface)) {
+ dev->scsi_host_ptr->sg_tablesize = (dev->max_fib_size -
sizeof(struct aac_fibhdr) -
- sizeof(struct aac_write64) +
- sizeof(struct sgmap64)) /
- sizeof(struct sgmap64);
- }
- dev->scsi_host_ptr->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
- if(!(dev->adapter_info.options & AAC_OPT_NEW_COMM)) {
- /*
- * Worst case size that could cause sg overflow when
- * we break up SG elements that are larger than 64KB.
- * Would be nice if we could tell the SCSI layer what
- * the maximum SG element size can be. Worst case is
- * (sg_tablesize-1) 4KB elements with one 64KB
- * element.
- * 32bit -> 468 or 238KB 64bit -> 424 or 212KB
- */
- dev->scsi_host_ptr->max_sectors =
- (dev->scsi_host_ptr->sg_tablesize * 8) + 112;
+ sizeof(struct aac_write) + sizeof(struct sgmap)) /
+ sizeof(struct sgmap);
+ if (dev->dac_support) {
+ /*
+ * 38 scatter gather elements
+ */
+ dev->scsi_host_ptr->sg_tablesize =
+ (dev->max_fib_size -
+ sizeof(struct aac_fibhdr) -
+ sizeof(struct aac_write64) +
+ sizeof(struct sgmap64)) /
+ sizeof(struct sgmap64);
+ }
+ dev->scsi_host_ptr->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
+ if(!(dev->adapter_info.options & AAC_OPT_NEW_COMM)) {
+ /*
+ * Worst case size that could cause sg overflow when
+ * we break up SG elements that are larger than 64KB.
+ * Would be nice if we could tell the SCSI layer what
+ * the maximum SG element size can be. Worst case is
+ * (sg_tablesize-1) 4KB elements with one 64KB
+ * element.
+ * 32bit -> 468 or 238KB 64bit -> 424 or 212KB
+ */
+ dev->scsi_host_ptr->max_sectors =
+ (dev->scsi_host_ptr->sg_tablesize * 8) + 112;
+ }
}
fib_complete(fibptr);
@@ -905,7 +908,32 @@
fib_init(cmd_fibcontext);
- if (dev->dac_support == 1) {
+ if (dev->raw_io_interface) {
+ struct aac_raw_io *readcmd;
+ readcmd = (struct aac_raw_io *) fib_data(cmd_fibcontext);
+ readcmd->block[0] = cpu_to_le32(lba);
+ readcmd->block[1] = 0;
+ readcmd->count = cpu_to_le32(count<<9);
+ readcmd->cid = cpu_to_le16(cid);
+ readcmd->flags = cpu_to_le16(1);
+ readcmd->bpTotal = 0;
+ readcmd->bpComplete = 0;
+
+ aac_build_sgraw(scsicmd, &readcmd->sg);
+ fibsize = sizeof(struct aac_raw_io) + ((le32_to_cpu(readcmd->sg.count) - 1) * sizeof (struct sgentryraw));
+ if (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr)))
+ BUG();
+ /*
+ * Now send the Fib to the adapter
+ */
+ status = fib_send(ContainerRawIo,
+ cmd_fibcontext,
+ fibsize,
+ FsaNormal,
+ 0, 1,
+ (fib_callback) io_callback,
+ (void *) scsicmd);
+ } else if (dev->dac_support == 1) {
struct aac_read64 *readcmd;
readcmd = (struct aac_read64 *) fib_data(cmd_fibcontext);
readcmd->command = cpu_to_le32(VM_CtHostRead64);
@@ -1012,7 +1040,32 @@
}
fib_init(cmd_fibcontext);
- if(dev->dac_support == 1) {
+ if (dev->raw_io_interface) {
+ struct aac_raw_io *writecmd;
+ writecmd = (struct aac_raw_io *) fib_data(cmd_fibcontext);
+ writecmd->block[0] = cpu_to_le32(lba);
+ writecmd->block[1] = 0;
+ writecmd->count = cpu_to_le32(count<<9);
+ writecmd->cid = cpu_to_le16(cid);
+ writecmd->flags = 0;
+ writecmd->bpTotal = 0;
+ writecmd->bpComplete = 0;
+
+ aac_build_sgraw(scsicmd, &writecmd->sg);
+ fibsize = sizeof(struct aac_raw_io) + ((le32_to_cpu(writecmd->sg.count) - 1) * sizeof (struct sgentryraw));
+ if (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr)))
+ BUG();
+ /*
+ * Now send the Fib to the adapter
+ */
+ status = fib_send(ContainerRawIo,
+ cmd_fibcontext,
+ fibsize,
+ FsaNormal,
+ 0, 1,
+ (fib_callback) io_callback,
+ (void *) scsicmd);
+ } else if (dev->dac_support == 1) {
struct aac_write64 *writecmd;
writecmd = (struct aac_write64 *) fib_data(cmd_fibcontext);
writecmd->command = cpu_to_le32(VM_CtHostWrite64);
@@ -2028,6 +2081,76 @@
return byte_count;
}
+static unsigned long aac_build_sgraw(struct scsi_cmnd* scsicmd, struct sgmapraw* psg)
+{
+ struct Scsi_Host *host = scsicmd->device->host;
+ struct aac_dev *dev = (struct aac_dev *)host->hostdata;
+ unsigned long byte_count = 0;
+
+ // Get rid of old data
+ psg->count = 0;
+ psg->sg[0].next = 0;
+ psg->sg[0].prev = 0;
+ psg->sg[0].addr[0] = 0;
+ psg->sg[0].addr[1] = 0;
+ psg->sg[0].count = 0;
+ psg->sg[0].flags = 0;
+ if (scsicmd->use_sg) {
+ struct scatterlist *sg;
+ int i;
+ int sg_count;
+ sg = (struct scatterlist *) scsicmd->request_buffer;
+
+ sg_count = pci_map_sg(dev->pdev, sg, scsicmd->use_sg,
+ scsicmd->sc_data_direction);
+
+ for (i = 0; i < sg_count; i++) {
+ int count = sg_dma_len(sg);
+ u64 addr = sg_dma_address(sg);
+ psg->sg[i].next = 0;
+ psg->sg[i].prev = 0;
+ psg->sg[i].addr[1] = cpu_to_le32((u32)(addr>>32));
+ psg->sg[i].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));
+ psg->sg[i].count = cpu_to_le32(count);
+ psg->sg[i].flags = 0;
+ byte_count += count;
+ sg++;
+ }
+ psg->count = cpu_to_le32(sg_count);
+ /* hba wants the size to be exact */
+ if(byte_count > scsicmd->request_bufflen){
+ u32 temp = le32_to_cpu(psg->sg[i-1].count) -
+ (byte_count - scsicmd->request_bufflen);
+ psg->sg[i-1].count = cpu_to_le32(temp);
+ byte_count = scsicmd->request_bufflen;
+ }
+ /* Check for command underflow */
+ if(scsicmd->underflow && (byte_count < scsicmd->underflow)){
+ printk(KERN_WARNING"aacraid: cmd len %08lX cmd underflow %08X\n",
+ byte_count, scsicmd->underflow);
+ }
+ }
+ else if(scsicmd->request_bufflen) {
+ int count;
+ u64 addr;
+ scsicmd->SCp.dma_handle = pci_map_single(dev->pdev,
+ scsicmd->request_buffer,
+ scsicmd->request_bufflen,
+ scsicmd->sc_data_direction);
+ addr = scsicmd->SCp.dma_handle;
+ count = scsicmd->request_bufflen;
+ psg->count = cpu_to_le32(1);
+ psg->sg[0].next = 0;
+ psg->sg[0].prev = 0;
+ psg->sg[0].addr[1] = cpu_to_le32((u32)(addr>>32));
+ psg->sg[0].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));
+ psg->sg[0].count = cpu_to_le32(count);
+ psg->sg[0].flags = 0;
+ byte_count = scsicmd->request_bufflen;
+ }
+ return byte_count;
+}
+
#ifdef AAC_DETAILED_STATUS_INFO
struct aac_srb_status_info {
Index: scsi-misc-aac-1/drivers/scsi/aacraid/aacraid.h
===================================================================
--- scsi-misc-aac-1.orig/drivers/scsi/aacraid/aacraid.h 2005-07-01 11:52:07.000000000 -0700
+++ scsi-misc-aac-1/drivers/scsi/aacraid/aacraid.h 2005-07-05 15:12:05.000000000 -0700
@@ -114,6 +114,22 @@
u32 count; /* Length. */
};
+struct sgentryraw {
+ __le32 next; /* reserved for F/W use */
+ __le32 prev; /* reserved for F/W use */
+ __le32 addr[2];
+ __le32 count;
+ __le32 flags; /* reserved for F/W use */
+};
+
+struct user_sgentryraw {
+ u32 next; /* reserved for F/W use */
+ u32 prev; /* reserved for F/W use */
+ u32 addr[2];
+ u32 count;
+ u32 flags; /* reserved for F/W use */
+};
+
/*
* SGMAP
*
@@ -141,6 +157,16 @@
struct user_sgentry64 sg[1];
};
+struct sgmapraw {
+ __le32 count;
+ struct sgentryraw sg[1];
+};
+
+struct user_sgmapraw {
+ u32 count;
+ struct user_sgentryraw sg[1];
+};
+
struct creation_info
{
u8 buildnum; /* e.g., 588 */
@@ -355,6 +381,7 @@
*/
#define ContainerCommand 500
#define ContainerCommand64 501
+#define ContainerRawIo 502
/*
* Cluster Commands
*/
@@ -986,6 +1013,9 @@
u8 nondasd_support;
u8 dac_support;
u8 raid_scsi_mode;
+ /* macro side-effects BEWARE */
+# define raw_io_interface \
+ init->InitStructRevision==cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4)
u8 printf_enabled;
};
@@ -1164,6 +1194,17 @@
__le32 committed;
};
+struct aac_raw_io
+{
+ __le32 block[2];
+ __le32 count;
+ __le16 cid;
+ __le16 flags; /* 00 W, 01 R */
+ __le16 bpTotal; /* reserved for F/W use */
+ __le16 bpComplete; /* reserved for F/W use */
+ struct sgmapraw sg;
+};
+
#define CT_FLUSH_CACHE 129
struct aac_synchronize {
__le32 command; /* VM_ContainerConfig */
@@ -1204,7 +1245,7 @@
};
/*
- * This and assocated data structs are used by the
+ * This and associated data structs are used by the
* ioctl caller and are in cpu order.
*/
struct user_aac_srb
--
Mark Haverkamp <markh@xxxxxxxx>
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