[SCSI] ipr: add support for new adapter command structures for the next generation chip

Change the adapter command structures such that both 32 bit and 64 bit based
adapters can work with the driver.

Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 337 insertions, 113 deletions

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 032f0d0e6cb4..359882eadc26 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -131,13 +131,13 @@ static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
 };
 
 static const struct ipr_chip_t ipr_chip[] = {
-        { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, &ipr_chip_cfg[0] },
-        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, &ipr_chip_cfg[0] },
-        { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, &ipr_chip_cfg[0] },
-        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, &ipr_chip_cfg[0] },
-        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, &ipr_chip_cfg[0] },
-        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, &ipr_chip_cfg[1] },
-        { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, &ipr_chip_cfg[1] }
+        { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] },
+        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] },
+        { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] },
+        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] },
+        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, &ipr_chip_cfg[0] },
+        { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[1] },
+        { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[1] }
 };
 
 static int ipr_max_bus_speeds [] = {
@@ -468,7 +468,10 @@ static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
         trace_entry->time = jiffies;
         trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
         trace_entry->type = type;
-        trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
+        if (ipr_cmd->ioa_cfg->sis64)
+                trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
+        else
+                trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
         trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
         trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
         trace_entry->u.add_data = add_data;
@@ -488,16 +491,23 @@ static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
 {
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
         struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
-        dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
+        dma_addr_t dma_addr = ipr_cmd->dma_addr;
 
         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
-        ioarcb->write_data_transfer_length = 0;
+        ioarcb->data_transfer_length = 0;
         ioarcb->read_data_transfer_length = 0;
-        ioarcb->write_ioadl_len = 0;
+        ioarcb->ioadl_len = 0;
         ioarcb->read_ioadl_len = 0;
-        ioarcb->write_ioadl_addr =
-                cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
-        ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
+
+        if (ipr_cmd->ioa_cfg->sis64)
+                ioarcb->u.sis64_addr_data.data_ioadl_addr =
+                        cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
+        else {
+                ioarcb->write_ioadl_addr =
+                        cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
+                ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
+        }
+
         ioasa->ioasc = 0;
         ioasa->residual_data_len = 0;
         ioasa->u.gata.status = 0;
@@ -693,6 +703,35 @@ static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
 }
 
 /**
+ * ipr_send_command -  Send driver initiated requests.
+ * @ipr_cmd:            ipr command struct
+ *
+ * This function sends a command to the adapter using the correct write call.
+ * In the case of sis64, calculate the ioarcb size required. Then or in the
+ * appropriate bits.
+ *
+ * Return value:
+ *      none
+ **/
+static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
+{
+        struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+        dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
+
+        if (ioa_cfg->sis64) {
+                /* The default size is 256 bytes */
+                send_dma_addr |= 0x1;
+
+                /* If the number of ioadls * size of ioadl > 128 bytes,
+                   then use a 512 byte ioarcb */
+                if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
+                        send_dma_addr |= 0x4;
+                writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
+        } else
+                writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
+}
+
+/**
  * ipr_do_req -  Send driver initiated requests.
  * @ipr_cmd:            ipr command struct
  * @done:                       done function
@@ -724,8 +763,8 @@ static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
 
         mb();
-        writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
-               ioa_cfg->regs.ioarrin_reg);
+
+        ipr_send_command(ipr_cmd);
 }
 
 /**
@@ -747,6 +786,51 @@ static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
 }
 
 /**
+ * ipr_init_ioadl - initialize the ioadl for the correct SIS type
+ * @ipr_cmd:    ipr command struct
+ * @dma_addr:   dma address
+ * @len:        transfer length
+ * @flags:      ioadl flag value
+ *
+ * This function initializes an ioadl in the case where there is only a single
+ * descriptor.
+ *
+ * Return value:
+ *      nothing
+ **/
+static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
+                           u32 len, int flags)
+{
+        struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
+        struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
+
+        ipr_cmd->dma_use_sg = 1;
+
+        if (ipr_cmd->ioa_cfg->sis64) {
+                ioadl64->flags = cpu_to_be32(flags);
+                ioadl64->data_len = cpu_to_be32(len);
+                ioadl64->address = cpu_to_be64(dma_addr);
+
+                ipr_cmd->ioarcb.ioadl_len =
+                        cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
+                ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
+        } else {
+                ioadl->flags_and_data_len = cpu_to_be32(flags | len);
+                ioadl->address = cpu_to_be32(dma_addr);
+
+                if (flags == IPR_IOADL_FLAGS_READ_LAST) {
+                        ipr_cmd->ioarcb.read_ioadl_len =
+                                cpu_to_be32(sizeof(struct ipr_ioadl_desc));
+                        ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
+                } else {
+                        ipr_cmd->ioarcb.ioadl_len =
+                                cpu_to_be32(sizeof(struct ipr_ioadl_desc));
+                        ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
+                }
+        }
+}
+
+/**
  * ipr_send_blocking_cmd - Send command and sleep on its completion.
  * @ipr_cmd:    ipr command struct
  * @timeout_func:       function to invoke if command times out
@@ -803,11 +887,8 @@ static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
                 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
                 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
 
-                ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
-                ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
-                ipr_cmd->ioadl[0].flags_and_data_len =
-                        cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
-                ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
+                ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
+                               sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
 
                 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
                         ipr_cmd->done = ipr_process_ccn;
@@ -817,8 +898,8 @@ static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
                 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
 
                 mb();
-                writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
-                       ioa_cfg->regs.ioarrin_reg);
+
+                ipr_send_command(ipr_cmd);
         } else {
                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
         }
@@ -2976,6 +3057,37 @@ static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
 }
 
 /**
+ * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
+ * @ipr_cmd:            ipr command struct
+ * @sglist:             scatter/gather list
+ *
+ * Builds a microcode download IOA data list (IOADL).
+ *
+ **/
+static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
+                                    struct ipr_sglist *sglist)
+{
+        struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
+        struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
+        struct scatterlist *scatterlist = sglist->scatterlist;
+        int i;
+
+        ipr_cmd->dma_use_sg = sglist->num_dma_sg;
+        ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
+        ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
+
+        ioarcb->ioadl_len =
+                cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
+        for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
+                ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
+                ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
+                ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
+        }
+
+        ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
+}
+
+/**
  * ipr_build_ucode_ioadl - Build a microcode download IOADL
  * @ipr_cmd:    ipr command struct
  * @sglist:             scatter/gather list
@@ -2987,14 +3099,15 @@ static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
                                   struct ipr_sglist *sglist)
 {
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
-        struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
+        struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
         struct scatterlist *scatterlist = sglist->scatterlist;
         int i;
 
         ipr_cmd->dma_use_sg = sglist->num_dma_sg;
         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
-        ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
-        ioarcb->write_ioadl_len =
+        ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
+
+        ioarcb->ioadl_len =
                 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
 
         for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
@@ -3828,14 +3941,19 @@ static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
         ioarcb = &ipr_cmd->ioarcb;
         cmd_pkt = &ioarcb->cmd_pkt;
-        regs = &ioarcb->add_data.u.regs;
+
+        if (ipr_cmd->ioa_cfg->sis64) {
+                regs = &ipr_cmd->i.ata_ioadl.regs;
+                ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
+        } else
+                regs = &ioarcb->u.add_data.u.regs;
 
         ioarcb->res_handle = res->cfgte.res_handle;
         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
         cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
         if (ipr_is_gata(res)) {
                 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
-                ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
+                ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
                 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
         }
 
@@ -4309,6 +4427,53 @@ static irqreturn_t ipr_isr(int irq, void *devp)
 }
 
 /**
+ * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
+ * @ioa_cfg:    ioa config struct
+ * @ipr_cmd:    ipr command struct
+ *
+ * Return value:
+ *      0 on success / -1 on failure
+ **/
+static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
+                             struct ipr_cmnd *ipr_cmd)
+{
+        int i, nseg;
+        struct scatterlist *sg;
+        u32 length;
+        u32 ioadl_flags = 0;
+        struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
+        struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
+        struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
+
+        length = scsi_bufflen(scsi_cmd);
+        if (!length)
+                return 0;
+
+        nseg = scsi_dma_map(scsi_cmd);
+        if (nseg < 0) {
+                dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
+                return -1;
+        }
+
+        ipr_cmd->dma_use_sg = nseg;
+
+        if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
+                ioadl_flags = IPR_IOADL_FLAGS_WRITE;
+                ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
+        } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
+                ioadl_flags = IPR_IOADL_FLAGS_READ;
+
+        scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
+                ioadl64[i].flags = cpu_to_be32(ioadl_flags);
+                ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
+                ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
+        }
+
+        ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
+        return 0;
+}
+
+/**
  * ipr_build_ioadl - Build a scatter/gather list and map the buffer
  * @ioa_cfg:    ioa config struct
  * @ipr_cmd:    ipr command struct
@@ -4325,7 +4490,7 @@ static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
         u32 ioadl_flags = 0;
         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
-        struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
+        struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
 
         length = scsi_bufflen(scsi_cmd);
         if (!length)
@@ -4342,8 +4507,8 @@ static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
         if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
-                ioarcb->write_data_transfer_length = cpu_to_be32(length);
-                ioarcb->write_ioadl_len =
+                ioarcb->data_transfer_length = cpu_to_be32(length);
+                ioarcb->ioadl_len =
                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
         } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
                 ioadl_flags = IPR_IOADL_FLAGS_READ;
@@ -4352,11 +4517,10 @@ static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
         }
 
-        if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
-                ioadl = ioarcb->add_data.u.ioadl;
-                ioarcb->write_ioadl_addr =
-                        cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
-                                    offsetof(struct ipr_ioarcb, add_data));
+        if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
+                ioadl = ioarcb->u.add_data.u.ioadl;
+                ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
+                                    offsetof(struct ipr_ioarcb, u.add_data));
                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
         }
 
@@ -4446,18 +4610,24 @@ static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
 {
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
         struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
-        dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
+        dma_addr_t dma_addr = ipr_cmd->dma_addr;
 
         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
-        ioarcb->write_data_transfer_length = 0;
+        ioarcb->data_transfer_length = 0;
         ioarcb->read_data_transfer_length = 0;
-        ioarcb->write_ioadl_len = 0;
+        ioarcb->ioadl_len = 0;
         ioarcb->read_ioadl_len = 0;
         ioasa->ioasc = 0;
         ioasa->residual_data_len = 0;
-        ioarcb->write_ioadl_addr =
-                cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
-        ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
+
+        if (ipr_cmd->ioa_cfg->sis64)
+                ioarcb->u.sis64_addr_data.data_ioadl_addr =
+                        cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
+        else {
+                ioarcb->write_ioadl_addr =
+                        cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
+                ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
+        }
 }
 
 /**
@@ -4489,15 +4659,8 @@ static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
         cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
         cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
 
-        ipr_cmd->ioadl[0].flags_and_data_len =
-                cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
-        ipr_cmd->ioadl[0].address =
-                cpu_to_be32(ipr_cmd->sense_buffer_dma);
-
-        ipr_cmd->ioarcb.read_ioadl_len =
-                cpu_to_be32(sizeof(struct ipr_ioadl_desc));
-        ipr_cmd->ioarcb.read_data_transfer_length =
-                cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
+        ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
+                       SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
 
         ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
                    IPR_REQUEST_SENSE_TIMEOUT * 2);
@@ -4916,13 +5079,16 @@ static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
             (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
 
-        if (likely(rc == 0))
-                rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
+        if (likely(rc == 0)) {
+                if (ioa_cfg->sis64)
+                        rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
+                else
+                        rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
+        }
 
         if (likely(rc == 0)) {
                 mb();
-                writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
-                       ioa_cfg->regs.ioarrin_reg);
+                ipr_send_command(ipr_cmd);
         } else {
                  list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
                  return SCSI_MLQUEUE_HOST_BUSY;
@@ -5146,6 +5312,52 @@ static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
 }
 
 /**
+ * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
+ * @ipr_cmd:    ipr command struct
+ * @qc:         ATA queued command
+ *
+ **/
+static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
+                                  struct ata_queued_cmd *qc)
+{
+        u32 ioadl_flags = 0;
+        struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
+        struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
+        struct ipr_ioadl64_desc *last_ioadl64 = NULL;
+        int len = qc->nbytes;
+        struct scatterlist *sg;
+        unsigned int si;
+        dma_addr_t dma_addr = ipr_cmd->dma_addr;
+
+        if (len == 0)
+                return;
+
+        if (qc->dma_dir == DMA_TO_DEVICE) {
+                ioadl_flags = IPR_IOADL_FLAGS_WRITE;
+                ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
+        } else if (qc->dma_dir == DMA_FROM_DEVICE)
+                ioadl_flags = IPR_IOADL_FLAGS_READ;
+
+        ioarcb->data_transfer_length = cpu_to_be32(len);
+        ioarcb->ioadl_len =
+                cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
+        ioarcb->u.sis64_addr_data.data_ioadl_addr =
+                cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
+
+        for_each_sg(qc->sg, sg, qc->n_elem, si) {
+                ioadl64->flags = cpu_to_be32(ioadl_flags);
+                ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
+                ioadl64->address = cpu_to_be64(sg_dma_address(sg));
+
+                last_ioadl64 = ioadl64;
+                ioadl64++;
+        }
+
+        if (likely(last_ioadl64))
+                last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
+}
+
+/**
  * ipr_build_ata_ioadl - Build an ATA scatter/gather list
  * @ipr_cmd:    ipr command struct
  * @qc:         ATA queued command
@@ -5156,7 +5368,7 @@ static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
 {
         u32 ioadl_flags = 0;
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
-        struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
+        struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
         struct ipr_ioadl_desc *last_ioadl = NULL;
         int len = qc->nbytes;
         struct scatterlist *sg;
@@ -5168,8 +5380,8 @@ static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
         if (qc->dma_dir == DMA_TO_DEVICE) {
                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
-                ioarcb->write_data_transfer_length = cpu_to_be32(len);
-                ioarcb->write_ioadl_len =
+                ioarcb->data_transfer_length = cpu_to_be32(len);
+                ioarcb->ioadl_len =
                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
         } else if (qc->dma_dir == DMA_FROM_DEVICE) {
                 ioadl_flags = IPR_IOADL_FLAGS_READ;
@@ -5212,10 +5424,15 @@ static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
 
         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
         ioarcb = &ipr_cmd->ioarcb;
-        regs = &ioarcb->add_data.u.regs;
 
-        memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
-        ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
+        if (ioa_cfg->sis64) {
+                regs = &ipr_cmd->i.ata_ioadl.regs;
+                ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
+        } else
+                regs = &ioarcb->u.add_data.u.regs;
+
+        memset(regs, 0, sizeof(*regs));
+        ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
 
         list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
         ipr_cmd->qc = qc;
@@ -5226,7 +5443,11 @@ static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
         ipr_cmd->dma_use_sg = qc->n_elem;
 
-        ipr_build_ata_ioadl(ipr_cmd, qc);
+        if (ioa_cfg->sis64)
+                ipr_build_ata_ioadl64(ipr_cmd, qc);
+        else
+                ipr_build_ata_ioadl(ipr_cmd, qc);
+
         regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
         ipr_copy_sata_tf(regs, &qc->tf);
         memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
@@ -5257,8 +5478,9 @@ static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
         }
 
         mb();
-        writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
-               ioa_cfg->regs.ioarrin_reg);
+
+        ipr_send_command(ipr_cmd);
+
         return 0;
 }
 
@@ -5459,7 +5681,7 @@ static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
  * ipr_set_supported_devs - Send Set Supported Devices for a device
  * @ipr_cmd:    ipr command struct
  *
- * This function send a Set Supported Devices to the adapter
+ * This function sends a Set Supported Devices to the adapter
  *
  * Return value:
  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
@@ -5468,7 +5690,6 @@ static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
 {
         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
         struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
-        struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
         struct ipr_resource_entry *res = ipr_cmd->u.res;
 
@@ -5489,13 +5710,11 @@ static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
                 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
                 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
 
-                ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
-                                                        sizeof(struct ipr_supported_device));
-                ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
-                                             offsetof(struct ipr_misc_cbs, supp_dev));
-                ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
-                ioarcb->write_data_transfer_length =
-                        cpu_to_be32(sizeof(struct ipr_supported_device));
+                ipr_init_ioadl(ipr_cmd,
+                               ioa_cfg->vpd_cbs_dma +
+                                 offsetof(struct ipr_misc_cbs, supp_dev),
+                               sizeof(struct ipr_supported_device),
+                               IPR_IOADL_FLAGS_WRITE_LAST);
 
                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
                            IPR_SET_SUP_DEVICE_TIMEOUT);
@@ -5695,10 +5914,9 @@ static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
  *      none
  **/
 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
-                                  __be32 res_handle, u8 parm, u32 dma_addr,
-                                  u8 xfer_len)
+                                  __be32 res_handle, u8 parm,
+                                  dma_addr_t dma_addr, u8 xfer_len)
 {
-        struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
 
         ioarcb->res_handle = res_handle;
@@ -5708,11 +5926,7 @@ static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
         ioarcb->cmd_pkt.cdb[1] = parm;
         ioarcb->cmd_pkt.cdb[4] = xfer_len;
 
-        ioadl->flags_and_data_len =
-                cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
-        ioadl->address = cpu_to_be32(dma_addr);
-        ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
-        ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
+        ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
 }
 
 /**
@@ -5762,9 +5976,8 @@ static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
  **/
 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
                                  __be32 res_handle,
-                                 u8 parm, u32 dma_addr, u8 xfer_len)
+                                 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
 {
-        struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
 
         ioarcb->res_handle = res_handle;
@@ -5773,11 +5986,7 @@ static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
         ioarcb->cmd_pkt.cdb[4] = xfer_len;
         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
 
-        ioadl->flags_and_data_len =
-                cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
-        ioadl->address = cpu_to_be32(dma_addr);
-        ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
-        ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
+        ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
 }
 
 /**
@@ -6033,7 +6242,6 @@ static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
 {
         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
-        struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
         struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
 
@@ -6050,13 +6258,9 @@ static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
         ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
         ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
 
-        ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
-        ioarcb->read_data_transfer_length =
-                cpu_to_be32(sizeof(struct ipr_config_table));
-
-        ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
-        ioadl->flags_and_data_len =
-                cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
+        ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma,
+                       sizeof(struct ipr_config_table),
+                       IPR_IOADL_FLAGS_READ_LAST);
 
         ipr_cmd->job_step = ipr_init_res_table;
 
@@ -6076,10 +6280,9 @@ static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
  *      none
  **/
 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
-                              u32 dma_addr, u8 xfer_len)
+                              dma_addr_t dma_addr, u8 xfer_len)
 {
         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
-        struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
 
         ENTER;
         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
@@ -6090,12 +6293,7 @@ static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
         ioarcb->cmd_pkt.cdb[2] = page;
         ioarcb->cmd_pkt.cdb[4] = xfer_len;
 
-        ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
-        ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
-
-        ioadl->address = cpu_to_be32(dma_addr);
-        ioadl->flags_and_data_len =
-                cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
+        ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
 
         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
         LEAVE;
@@ -6785,7 +6983,10 @@ static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
         ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
         ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
 
-        ipr_build_ucode_ioadl(ipr_cmd, sglist);
+        if (ioa_cfg->sis64)
+                ipr_build_ucode_ioadl64(ipr_cmd, sglist);
+        else
+                ipr_build_ucode_ioadl(ipr_cmd, sglist);
         ipr_cmd->job_step = ipr_reset_ucode_download_done;
 
         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
@@ -7209,7 +7410,7 @@ static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
         int i;
 
         ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
-                                                 sizeof(struct ipr_cmnd), 8, 0);
+                                                 sizeof(struct ipr_cmnd), 16, 0);
 
         if (!ioa_cfg->ipr_cmd_pool)
                 return -ENOMEM;
@@ -7227,13 +7428,25 @@ static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
                 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
 
                 ioarcb = &ipr_cmd->ioarcb;
-                ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
+                ipr_cmd->dma_addr = dma_addr;
+                if (ioa_cfg->sis64)
+                        ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
+                else
+                        ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
+
                 ioarcb->host_response_handle = cpu_to_be32(i << 2);
-                ioarcb->write_ioadl_addr =
-                        cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
-                ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
-                ioarcb->ioasa_host_pci_addr =
-                        cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
+                if (ioa_cfg->sis64) {
+                        ioarcb->u.sis64_addr_data.data_ioadl_addr =
+                                cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
+                        ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
+                                cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, ioasa));
+                } else {
+                        ioarcb->write_ioadl_addr =
+                                cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
+                        ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
+                        ioarcb->ioasa_host_pci_addr =
+                                cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
+                }
                 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
                 ipr_cmd->cmd_index = i;
                 ipr_cmd->ioa_cfg = ioa_cfg;
@@ -7578,6 +7791,8 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
                 goto out_scsi_host_put;
         }
 
+        /* set SIS 32 or SIS 64 */
+        ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
         ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
 
         if (ipr_transop_timeout)
@@ -7615,7 +7830,16 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
 
         pci_set_master(pdev);
 
-        rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+        if (ioa_cfg->sis64) {
+                rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+                if (rc < 0) {
+                        dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
+                        rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+                }
+
+        } else
+                rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+
         if (rc < 0) {
                 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
                 goto cleanup_nomem;