2 files changed, 169 insertions, 74 deletions

diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 30c741a12a62..7b1a084ec94e 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -29,11 +29,6 @@
 /*#define DEBUG 1 */
 /*#define UARTDELAY 1 */
 
-/* On the real kernel ADDR32 should always be zero for 2.4. GFP_HIGH allocates
-   high pages. Keep the macro around because of the broken unmerged ia64 tree */
-
-#define ADDR32 (0)
-
 #include <linux/module.h>
 
 MODULE_AUTHOR("Deanna Bonds, with _lots_ of help from Mark Salyzyn");
@@ -108,9 +103,10 @@ static dpt_sig_S DPTI_sig = {
 
 static DEFINE_MUTEX(adpt_configuration_lock);
 
-static struct i2o_sys_tbl *sys_tbl = NULL;
-static int sys_tbl_ind = 0;
-static int sys_tbl_len = 0;
+static struct i2o_sys_tbl *sys_tbl;
+static dma_addr_t sys_tbl_pa;
+static int sys_tbl_ind;
+static int sys_tbl_len;
 
 static adpt_hba* hba_chain = NULL;
 static int hba_count = 0;
@@ -142,6 +138,16 @@ static DEFINE_SPINLOCK(adpt_post_wait_lock);
  *============================================================================
  */
 
+static inline u32 dma_high(dma_addr_t addr)
+{
+        return upper_32_bits(addr);
+}
+
+static inline u32 dma_low(dma_addr_t addr)
+{
+        return (u32)addr;
+}
+
 static u8 adpt_read_blink_led(adpt_hba* host)
 {
         if(host->FwDebugBLEDflag_P != 0) {
@@ -279,11 +285,12 @@ static void adpt_inquiry(adpt_hba* pHba)
         u32 len;
         u32 reqlen;
         u8* buf;
+        dma_addr_t addr;
         u8  scb[16];
         s32 rcode;
 
         memset(msg, 0, sizeof(msg));
-        buf = kmalloc(80,GFP_KERNEL|ADDR32);
+        buf = dma_alloc_coherent(&pHba->pDev->dev, 80, &addr, GFP_KERNEL);
         if(!buf){
                 printk(KERN_ERR"%s: Could not allocate buffer\n",pHba->name);
                 return;
@@ -328,7 +335,7 @@ static void adpt_inquiry(adpt_hba* pHba)
         /* Now fill in the SGList and command */
         *lenptr = len;
         *mptr++ = 0xD0000000|direction|len;
-        *mptr++ = virt_to_bus(buf);
+        *mptr++ = addr;
 
         // Send it on it's way
         rcode = adpt_i2o_post_wait(pHba, msg, reqlen<<2, 120);
@@ -336,7 +343,7 @@ static void adpt_inquiry(adpt_hba* pHba)
                 sprintf(pHba->detail, "Adaptec I2O RAID");
                 printk(KERN_INFO "%s: Inquiry Error (%d)\n",pHba->name,rcode);
                 if (rcode != -ETIME && rcode != -EINTR)
-                        kfree(buf);
+                        dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
         } else {
                 memset(pHba->detail, 0, sizeof(pHba->detail));
                 memcpy(&(pHba->detail), "Vendor: Adaptec ", 16);
@@ -345,7 +352,7 @@ static void adpt_inquiry(adpt_hba* pHba)
                 memcpy(&(pHba->detail[40]), " FW: ", 4);
                 memcpy(&(pHba->detail[44]), (u8*) &buf[32], 4);
                 pHba->detail[48] = '\0';        /* precautionary */
-                kfree(buf);
+                dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
         }
         adpt_i2o_status_get(pHba);
         return ;
@@ -621,7 +628,6 @@ stop_output:
         return len;
 }
 
-
 /*===========================================================================
  * Error Handling routines
  *===========================================================================
@@ -877,6 +883,9 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev
         if (pci_set_dma_mask(pDev, DMA_32BIT_MASK))
                 return -EINVAL;
 
+        /* adapter only supports message blocks below 4GB */
+        pci_set_consistent_dma_mask(pDev, DMA_32BIT_MASK);
+
         base_addr0_phys = pci_resource_start(pDev,0);
         hba_map0_area_size = pci_resource_len(pDev,0);
 
@@ -1021,10 +1030,24 @@ static void adpt_i2o_delete_hba(adpt_hba* pHba)
         if(pHba->msg_addr_virt != pHba->base_addr_virt){
                 iounmap(pHba->msg_addr_virt);
         }
-        kfree(pHba->hrt);
-        kfree(pHba->lct);
-        kfree(pHba->status_block);
-        kfree(pHba->reply_pool);
+        if(pHba->hrt) {
+                dma_free_coherent(&pHba->pDev->dev,
+                        pHba->hrt->num_entries * pHba->hrt->entry_len << 2,
+                        pHba->hrt, pHba->hrt_pa);
+        }
+        if(pHba->lct) {
+                dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
+                        pHba->lct, pHba->lct_pa);
+        }
+        if(pHba->status_block) {
+                dma_free_coherent(&pHba->pDev->dev, sizeof(i2o_status_block),
+                        pHba->status_block, pHba->status_block_pa);
+        }
+        if(pHba->reply_pool) {
+                dma_free_coherent(&pHba->pDev->dev,
+                        pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
+                        pHba->reply_pool, pHba->reply_pool_pa);
+        }
 
         for(d = pHba->devices; d ; d = next){
                 next = d->next;
@@ -1239,6 +1262,7 @@ static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
 {
         u32 msg[8];
         u8* status;
+        dma_addr_t addr;
         u32 m = EMPTY_QUEUE ;
         ulong timeout = jiffies + (TMOUT_IOPRESET*HZ);
 
@@ -1261,12 +1285,13 @@ static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
                 schedule_timeout_uninterruptible(1);
         } while (m == EMPTY_QUEUE);
 
-        status = kzalloc(4, GFP_KERNEL|ADDR32);
+        status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
         if(status == NULL) {
                 adpt_send_nop(pHba, m);
                 printk(KERN_ERR"IOP reset failed - no free memory.\n");
                 return -ENOMEM;
         }
+        memset(status,0,4);
 
         msg[0]=EIGHT_WORD_MSG_SIZE|SGL_OFFSET_0;
         msg[1]=I2O_CMD_ADAPTER_RESET<<24|HOST_TID<<12|ADAPTER_TID;
@@ -1274,8 +1299,8 @@ static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
         msg[3]=0;
         msg[4]=0;
         msg[5]=0;
-        msg[6]=virt_to_bus(status);
-        msg[7]=0;     
+        msg[6]=dma_low(addr);
+        msg[7]=dma_high(addr);
 
         memcpy_toio(pHba->msg_addr_virt+m, msg, sizeof(msg));
         wmb();
@@ -1285,7 +1310,10 @@ static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
         while(*status == 0){
                 if(time_after(jiffies,timeout)){
                         printk(KERN_WARNING"%s: IOP Reset Timeout\n",pHba->name);
-                        kfree(status);
+                        /* We lose 4 bytes of "status" here, but we cannot
+                           free these because controller may awake and corrupt
+                           those bytes at any time */
+                        /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
                         return -ETIMEDOUT;
                 }
                 rmb();
@@ -1304,6 +1332,10 @@ static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
                         }
                         if(time_after(jiffies,timeout)){
                                 printk(KERN_ERR "%s:Timeout waiting for IOP Reset.\n",pHba->name);
+                                /* We lose 4 bytes of "status" here, but we
+                                   cannot free these because controller may
+                                   awake and corrupt those bytes at any time */
+                                /* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
                                 return -ETIMEDOUT;
                         }
                         schedule_timeout_uninterruptible(1);
@@ -1320,7 +1352,7 @@ static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
                 PDEBUG("%s: Reset completed.\n", pHba->name);
         }
 
-        kfree(status);
+        dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
 #ifdef UARTDELAY
         // This delay is to allow someone attached to the card through the debug UART to 
         // set up the dump levels that they want before the rest of the initialization sequence
@@ -1592,6 +1624,7 @@ static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
         u32 i = 0;
         u32 rcode = 0;
         void *p = NULL;
+        dma_addr_t addr;
         ulong flags = 0;
 
         memset(&msg, 0, MAX_MESSAGE_SIZE*4);
@@ -1646,7 +1679,7 @@ static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
                         }
                         sg_size = sg[i].flag_count & 0xffffff;      
                         /* Allocate memory for the transfer */
-                        p = kmalloc(sg_size, GFP_KERNEL|ADDR32);
+                        p = dma_alloc_coherent(&pHba->pDev->dev, sg_size, &addr, GFP_KERNEL);
                         if(!p) {
                                 printk(KERN_DEBUG"%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                                 pHba->name,sg_size,i,sg_count);
@@ -1743,12 +1776,17 @@ static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
 
 
 cleanup:
-        if (rcode != -ETIME && rcode != -EINTR)
+        if (rcode != -ETIME && rcode != -EINTR) {
+                struct sg_simple_element *sg =
+                                (struct sg_simple_element*) (msg +sg_offset);
                 kfree (reply);
-        while(sg_index) {
-                if(sg_list[--sg_index]) {
-                        if (rcode != -ETIME && rcode != -EINTR)
-                                kfree(sg_list[sg_index]);
+                while(sg_index) {
+                        if(sg_list[--sg_index]) {
+                                dma_free_coherent(&pHba->pDev->dev,
+                                        sg[sg_index].flag_count & 0xffffff,
+                                        sg_list[sg_index],
+                                        sg[sg_index].addr_bus);
+                        }
                 }
         }
         return rcode;
@@ -1965,7 +2003,16 @@ static irqreturn_t adpt_isr(int irq, void *dev_id)
                                 goto out;
                         }
                 }
-                reply = bus_to_virt(m);
+                if (pHba->reply_pool_pa <= m &&
+                    m < pHba->reply_pool_pa +
+                        (pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4)) {
+                        reply = (u8 *)pHba->reply_pool +
+                                                (m - pHba->reply_pool_pa);
+                } else {
+                        /* Ick, we should *never* be here */
+                        printk(KERN_ERR "dpti: reply frame not from pool\n");
+                        reply = (u8 *)bus_to_virt(m);
+                }
 
                 if (readl(reply) & MSG_FAIL) {
                         u32 old_m = readl(reply+28); 
@@ -2008,6 +2055,7 @@ static irqreturn_t adpt_isr(int irq, void *dev_id)
                 } else { // SCSI message
                         cmd = (struct scsi_cmnd*) readl(reply+12); 
                         if(cmd != NULL){
+                                scsi_dma_unmap(cmd);
                                 if(cmd->serial_number != 0) { // If not timedout
                                         adpt_i2o_to_scsi(reply, cmd);
                                 }
@@ -2156,7 +2204,7 @@ static s32 adpt_scsi_host_alloc(adpt_hba* pHba, struct scsi_host_template *sht)
         host->max_lun = 256;
         host->max_channel = pHba->top_scsi_channel + 1;
         host->cmd_per_lun = 1;
-        host->unique_id = (uint) pHba;
+        host->unique_id = (u32)sys_tbl_pa + pHba->unit;
         host->sg_tablesize = pHba->sg_tablesize;
         host->can_queue = pHba->post_fifo_size;
 
@@ -2596,11 +2644,10 @@ static s32 adpt_send_nop(adpt_hba*pHba,u32 m)
 static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
 {
         u8 *status;
+        dma_addr_t addr;
         u32 __iomem *msg = NULL;
         int i;
         ulong timeout = jiffies + TMOUT_INITOUTBOUND*HZ;
-        u32* ptr;
-        u32 outbound_frame;  // This had to be a 32 bit address
         u32 m;
 
         do {
@@ -2619,13 +2666,14 @@ static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
 
         msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
 
-        status = kzalloc(4, GFP_KERNEL|ADDR32);
+        status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
         if (!status) {
                 adpt_send_nop(pHba, m);
                 printk(KERN_WARNING"%s: IOP reset failed - no free memory.\n",
                         pHba->name);
                 return -ENOMEM;
         }
+        memset(status, 0, 4);
 
         writel(EIGHT_WORD_MSG_SIZE| SGL_OFFSET_6, &msg[0]);
         writel(I2O_CMD_OUTBOUND_INIT<<24 | HOST_TID<<12 | ADAPTER_TID, &msg[1]);
@@ -2634,7 +2682,7 @@ static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
         writel(4096, &msg[4]);          /* Host page frame size */
         writel((REPLY_FRAME_SIZE)<<16|0x80, &msg[5]);   /* Outbound msg frame size and Initcode */
         writel(0xD0000004, &msg[6]);            /* Simple SG LE, EOB */
-        writel(virt_to_bus(status), &msg[7]);
+        writel((u32)addr, &msg[7]);
 
         writel(m, pHba->post_port);
         wmb();
@@ -2649,6 +2697,10 @@ static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
                 rmb();
                 if(time_after(jiffies,timeout)){
                         printk(KERN_WARNING"%s: Timeout Initializing\n",pHba->name);
+                        /* We lose 4 bytes of "status" here, but we
+                           cannot free these because controller may
+                           awake and corrupt those bytes at any time */
+                        /* dma_free_coherent(&pHba->pDev->dev, 4, status, addr); */
                         return -ETIMEDOUT;
                 }
                 schedule_timeout_uninterruptible(1);
@@ -2657,25 +2709,30 @@ static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
         // If the command was successful, fill the fifo with our reply
         // message packets
         if(*status != 0x04 /*I2O_EXEC_OUTBOUND_INIT_COMPLETE*/) {
-                kfree(status);
+                dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
                 return -2;
         }
-        kfree(status);
+        dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
 
-        kfree(pHba->reply_pool);
+        if(pHba->reply_pool != NULL) {
+                dma_free_coherent(&pHba->pDev->dev,
+                        pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
+                        pHba->reply_pool, pHba->reply_pool_pa);
+        }
 
-        pHba->reply_pool = kzalloc(pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4, GFP_KERNEL|ADDR32);
+        pHba->reply_pool = dma_alloc_coherent(&pHba->pDev->dev,
+                                pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
+                                &pHba->reply_pool_pa, GFP_KERNEL);
         if (!pHba->reply_pool) {
                 printk(KERN_ERR "%s: Could not allocate reply pool\n", pHba->name);
                 return -ENOMEM;
         }
+        memset(pHba->reply_pool, 0 , pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4);
 
-        ptr = pHba->reply_pool;
         for(i = 0; i < pHba->reply_fifo_size; i++) {
-                outbound_frame = (u32)virt_to_bus(ptr);
-                writel(outbound_frame, pHba->reply_port);
+                writel(pHba->reply_pool_pa + (i * REPLY_FRAME_SIZE * 4),
+                        pHba->reply_port);
                 wmb();
-                ptr +=  REPLY_FRAME_SIZE;
         }
         adpt_i2o_status_get(pHba);
         return 0;
@@ -2699,11 +2756,11 @@ static s32 adpt_i2o_status_get(adpt_hba* pHba)
         u32 m;
         u32 __iomem *msg;
         u8 *status_block=NULL;
-        ulong status_block_bus;
 
         if(pHba->status_block == NULL) {
-                pHba->status_block = (i2o_status_block*)
-                        kmalloc(sizeof(i2o_status_block),GFP_KERNEL|ADDR32);
+                pHba->status_block = dma_alloc_coherent(&pHba->pDev->dev,
+                                        sizeof(i2o_status_block),
+                                        &pHba->status_block_pa, GFP_KERNEL);
                 if(pHba->status_block == NULL) {
                         printk(KERN_ERR
                         "dpti%d: Get Status Block failed; Out of memory. \n", 
@@ -2713,7 +2770,6 @@ static s32 adpt_i2o_status_get(adpt_hba* pHba)
         }
         memset(pHba->status_block, 0, sizeof(i2o_status_block));
         status_block = (u8*)(pHba->status_block);
-        status_block_bus = virt_to_bus(pHba->status_block);
         timeout = jiffies+TMOUT_GETSTATUS*HZ;
         do {
                 rmb();
@@ -2738,8 +2794,8 @@ static s32 adpt_i2o_status_get(adpt_hba* pHba)
         writel(0, &msg[3]);
         writel(0, &msg[4]);
         writel(0, &msg[5]);
-        writel(((u32)status_block_bus)&0xffffffff, &msg[6]);
-        writel(0, &msg[7]);
+        writel( dma_low(pHba->status_block_pa), &msg[6]);
+        writel( dma_high(pHba->status_block_pa), &msg[7]);
         writel(sizeof(i2o_status_block), &msg[8]); // 88 bytes
 
         //post message
@@ -2819,7 +2875,9 @@ static int adpt_i2o_lct_get(adpt_hba* pHba)
         }
         do {
                 if (pHba->lct == NULL) {
-                        pHba->lct = kmalloc(pHba->lct_size, GFP_KERNEL|ADDR32);
+                        pHba->lct = dma_alloc_coherent(&pHba->pDev->dev,
+                                        pHba->lct_size, &pHba->lct_pa,
+                                        GFP_KERNEL);
                         if(pHba->lct == NULL) {
                                 printk(KERN_CRIT "%s: Lct Get failed. Out of memory.\n",
                                         pHba->name);
@@ -2835,7 +2893,7 @@ static int adpt_i2o_lct_get(adpt_hba* pHba)
                 msg[4] = 0xFFFFFFFF;    /* All devices */
                 msg[5] = 0x00000000;    /* Report now */
                 msg[6] = 0xD0000000|pHba->lct_size;
-                msg[7] = virt_to_bus(pHba->lct);
+                msg[7] = (u32)pHba->lct_pa;
 
                 if ((ret=adpt_i2o_post_wait(pHba, msg, sizeof(msg), 360))) {
                         printk(KERN_ERR "%s: LCT Get failed (status=%#10x.\n", 
@@ -2846,7 +2904,8 @@ static int adpt_i2o_lct_get(adpt_hba* pHba)
 
                 if ((pHba->lct->table_size << 2) > pHba->lct_size) {
                         pHba->lct_size = pHba->lct->table_size << 2;
-                        kfree(pHba->lct);
+                        dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
+                                        pHba->lct, pHba->lct_pa);
                         pHba->lct = NULL;
                 }
         } while (pHba->lct == NULL);
@@ -2871,25 +2930,30 @@ static int adpt_i2o_lct_get(adpt_hba* pHba)
 
 static int adpt_i2o_build_sys_table(void)
 {
-        adpt_hba* pHba = NULL;
+        adpt_hba* pHba = hba_chain;
         int count = 0;
 
+        if (sys_tbl)
+                dma_free_coherent(&pHba->pDev->dev, sys_tbl_len,
+                                        sys_tbl, sys_tbl_pa);
+
         sys_tbl_len = sizeof(struct i2o_sys_tbl) +      // Header + IOPs
                                 (hba_count) * sizeof(struct i2o_sys_tbl_entry);
 
-        kfree(sys_tbl);
-
-        sys_tbl = kzalloc(sys_tbl_len, GFP_KERNEL|ADDR32);
+        sys_tbl = dma_alloc_coherent(&pHba->pDev->dev,
+                                sys_tbl_len, &sys_tbl_pa, GFP_KERNEL);
         if (!sys_tbl) {
                 printk(KERN_WARNING "SysTab Set failed. Out of memory.\n");     
                 return -ENOMEM;
         }
+        memset(sys_tbl, 0, sys_tbl_len);
 
         sys_tbl->num_entries = hba_count;
         sys_tbl->version = I2OVERSION;
         sys_tbl->change_ind = sys_tbl_ind++;
 
         for(pHba = hba_chain; pHba; pHba = pHba->next) {
+                u64 addr;
                 // Get updated Status Block so we have the latest information
                 if (adpt_i2o_status_get(pHba)) {
                         sys_tbl->num_entries--;
@@ -2905,8 +2969,9 @@ static int adpt_i2o_build_sys_table(void)
                 sys_tbl->iops[count].frame_size = pHba->status_block->inbound_frame_size;
                 sys_tbl->iops[count].last_changed = sys_tbl_ind - 1; // ??
                 sys_tbl->iops[count].iop_capabilities = pHba->status_block->iop_capabilities;
-                sys_tbl->iops[count].inbound_low = (u32)virt_to_bus(pHba->post_port);
-                sys_tbl->iops[count].inbound_high = (u32)((u64)virt_to_bus(pHba->post_port)>>32);
+                addr = pHba->base_addr_phys + 0x40;
+                sys_tbl->iops[count].inbound_low = dma_low(addr);
+                sys_tbl->iops[count].inbound_high = dma_high(addr);
 
                 count++;
         }
@@ -3042,7 +3107,8 @@ static s32 adpt_i2o_hrt_get(adpt_hba* pHba)
 
         do {
                 if (pHba->hrt == NULL) {
-                        pHba->hrt=kmalloc(size, GFP_KERNEL|ADDR32);
+                        pHba->hrt = dma_alloc_coherent(&pHba->pDev->dev,
+                                        size, &pHba->hrt_pa, GFP_KERNEL);
                         if (pHba->hrt == NULL) {
                                 printk(KERN_CRIT "%s: Hrt Get failed; Out of memory.\n", pHba->name);
                                 return -ENOMEM;
@@ -3054,7 +3120,7 @@ static s32 adpt_i2o_hrt_get(adpt_hba* pHba)
                 msg[2]= 0;
                 msg[3]= 0;
                 msg[4]= (0xD0000000 | size);    /* Simple transaction */
-                msg[5]= virt_to_bus(pHba->hrt);   /* Dump it here */
+                msg[5]= (u32)pHba->hrt_pa;      /* Dump it here */
 
                 if ((ret = adpt_i2o_post_wait(pHba, msg, sizeof(msg),20))) {
                         printk(KERN_ERR "%s: Unable to get HRT (status=%#10x)\n", pHba->name, ret);
@@ -3062,8 +3128,10 @@ static s32 adpt_i2o_hrt_get(adpt_hba* pHba)
                 }
 
                 if (pHba->hrt->num_entries * pHba->hrt->entry_len << 2 > size) {
-                        size = pHba->hrt->num_entries * pHba->hrt->entry_len << 2;
-                        kfree(pHba->hrt);
+                        int newsize = pHba->hrt->num_entries * pHba->hrt->entry_len << 2;
+                        dma_free_coherent(&pHba->pDev->dev, size,
+                                pHba->hrt, pHba->hrt_pa);
+                        size = newsize;
                         pHba->hrt = NULL;
                 }
         } while(pHba->hrt == NULL);
@@ -3077,33 +3145,54 @@ static int adpt_i2o_query_scalar(adpt_hba* pHba, int tid,
                         int group, int field, void *buf, int buflen)
 {
         u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field };
-        u8 *resblk;
+        u8 *opblk_va;
+        dma_addr_t opblk_pa;
+        u8 *resblk_va;
+        dma_addr_t resblk_pa;
 
         int size;
 
         /* 8 bytes for header */
-        resblk = kmalloc(sizeof(u8) * (8+buflen), GFP_KERNEL|ADDR32);
-        if (resblk == NULL) {
+        resblk_va = dma_alloc_coherent(&pHba->pDev->dev,
+                        sizeof(u8) * (8 + buflen), &resblk_pa, GFP_KERNEL);
+        if (resblk_va == NULL) {
                 printk(KERN_CRIT "%s: query scalar failed; Out of memory.\n", pHba->name);
                 return -ENOMEM;
         }
 
+        opblk_va = dma_alloc_coherent(&pHba->pDev->dev,
+                        sizeof(opblk), &opblk_pa, GFP_KERNEL);
+        if (opblk_va == NULL) {
+                dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
+                        resblk_va, resblk_pa);
+                printk(KERN_CRIT "%s: query operatio failed; Out of memory.\n",
+                        pHba->name);
+                return -ENOMEM;
+        }
         if (field == -1)                /* whole group */
                         opblk[4] = -1;
 
+        memcpy(opblk_va, opblk, sizeof(opblk));
         size = adpt_i2o_issue_params(I2O_CMD_UTIL_PARAMS_GET, pHba, tid, 
-                opblk, sizeof(opblk), resblk, sizeof(u8)*(8+buflen));
+                opblk_va, opblk_pa, sizeof(opblk),
+                resblk_va, resblk_pa, sizeof(u8)*(8+buflen));
+        dma_free_coherent(&pHba->pDev->dev, sizeof(opblk), opblk_va, opblk_pa);
         if (size == -ETIME) {
+                dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
+                                                        resblk_va, resblk_pa);
                 printk(KERN_WARNING "%s: issue params failed; Timed out.\n", pHba->name);
                 return -ETIME;
         } else if (size == -EINTR) {
+                dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
+                                                        resblk_va, resblk_pa);
                 printk(KERN_WARNING "%s: issue params failed; Interrupted.\n", pHba->name);
                 return -EINTR;
         }
                         
-        memcpy(buf, resblk+8, buflen);  /* cut off header */
+        memcpy(buf, resblk_va+8, buflen);  /* cut off header */
 
-        kfree(resblk);
+        dma_free_coherent(&pHba->pDev->dev, sizeof(u8) * (8+buflen),
+                                                resblk_va, resblk_pa);
         if (size < 0)
                 return size;    
 
@@ -3120,10 +3209,11 @@ static int adpt_i2o_query_scalar(adpt_hba* pHba, int tid,
  *      ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
  */
 static int adpt_i2o_issue_params(int cmd, adpt_hba* pHba, int tid, 
-                  void *opblk, int oplen, void *resblk, int reslen)
+                  void *opblk_va,  dma_addr_t opblk_pa, int oplen,
+                void *resblk_va, dma_addr_t resblk_pa, int reslen)
 {
         u32 msg[9]; 
-        u32 *res = (u32 *)resblk;
+        u32 *res = (u32 *)resblk_va;
         int wait_status;
 
         msg[0] = NINE_WORD_MSG_SIZE | SGL_OFFSET_5;
@@ -3132,12 +3222,12 @@ static int adpt_i2o_issue_params(int cmd, adpt_hba* pHba, int tid,
         msg[3] = 0;
         msg[4] = 0;
         msg[5] = 0x54000000 | oplen;    /* OperationBlock */
-        msg[6] = virt_to_bus(opblk);
+        msg[6] = (u32)opblk_pa;
         msg[7] = 0xD0000000 | reslen;   /* ResultBlock */
-        msg[8] = virt_to_bus(resblk);
+        msg[8] = (u32)resblk_pa;
 
         if ((wait_status = adpt_i2o_post_wait(pHba, msg, sizeof(msg), 20))) {
-                printk("adpt_i2o_issue_params: post_wait failed (%p)\n", resblk);
+                printk("adpt_i2o_issue_params: post_wait failed (%p)\n", resblk_va);
                 return wait_status;     /* -DetailedStatus */
         }
 
@@ -3240,7 +3330,7 @@ static int adpt_i2o_systab_send(adpt_hba* pHba)
          * Private i/o space declaration  
          */
         msg[6] = 0x54000000 | sys_tbl_len;
-        msg[7] = virt_to_phys(sys_tbl);
+        msg[7] = (u32)sys_tbl_pa;
         msg[8] = 0x54000000 | 0;
         msg[9] = 0;
         msg[10] = 0xD4000000 | 0;
diff --git a/drivers/scsi/dpti.h b/drivers/scsi/dpti.h
index acc692915b4c..5181b92c9ddb 100644
--- a/drivers/scsi/dpti.h
+++ b/drivers/scsi/dpti.h
@@ -228,14 +228,18 @@ typedef struct _adpt_hba {
         u32  post_fifo_size;
         u32  reply_fifo_size;
         u32* reply_pool;
+        dma_addr_t reply_pool_pa;
         u32  sg_tablesize;      // Scatter/Gather List Size.       
         u8  top_scsi_channel;
         u8  top_scsi_id;
         u8  top_scsi_lun;
 
         i2o_status_block* status_block;
+        dma_addr_t status_block_pa;
         i2o_hrt* hrt;
+        dma_addr_t hrt_pa;
         i2o_lct* lct;
+        dma_addr_t lct_pa;
         uint lct_size;
         struct i2o_device* devices;
         struct adpt_channel channel[MAX_CHANNEL];
@@ -271,7 +275,8 @@ static int adpt_i2o_query_scalar(adpt_hba* pHba, int tid,
 static const char *adpt_i2o_get_class_name(int class);
 #endif
 static int adpt_i2o_issue_params(int cmd, adpt_hba* pHba, int tid, 
-                  void *opblk, int oplen, void *resblk, int reslen);
+                  void *opblk, dma_addr_t opblk_pa, int oplen,
+                  void *resblk, dma_addr_t resblk_pa, int reslen);
 static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout);
 static int adpt_i2o_lct_get(adpt_hba* pHba);
 static int adpt_i2o_parse_lct(adpt_hba* pHba);