[SCSI] fusion - Adding pci recog support for Fibre 949X and 939X chips

* adding pci id support for new Fibre chips, 949X and 939X
* adding errata workaround - disabling PIO access except during fwdlb.

Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 40 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index d2a3c086a995..673cdd955eed 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -186,6 +186,26 @@ static void __exit    fusion_exit  (void);
 #define CHIPREG_PIO_WRITE32(addr,val)   outl(val, (unsigned long)addr)
 #define CHIPREG_PIO_READ32(addr)        inl((unsigned long)addr)
 
+static void
+pci_disable_io_access(struct pci_dev *pdev)
+{
+        u16 command_reg;
+
+        pci_read_config_word(pdev, PCI_COMMAND, &command_reg);
+        command_reg &= ~1;
+        pci_write_config_word(pdev, PCI_COMMAND, command_reg);
+}
+
+static void
+pci_enable_io_access(struct pci_dev *pdev)
+{
+        u16 command_reg;
+
+        pci_read_config_word(pdev, PCI_COMMAND, &command_reg);
+        command_reg |= 1;
+        pci_write_config_word(pdev, PCI_COMMAND, command_reg);
+}
+
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 /*
  *      mpt_interrupt - MPT adapter (IOC) specific interrupt handler.
@@ -1161,6 +1181,16 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
                 pcixcmd &= 0x8F;
                 pci_write_config_byte(pdev, 0x6a, pcixcmd);
         }
+        else if (pdev->device == MPI_MANUFACTPAGE_DEVICEID_FC939X) {
+                ioc->prod_name = "LSIFC939X";
+                ioc->bus_type = FC;
+                ioc->errata_flag_1064 = 1;
+        }
+        else if (pdev->device == MPI_MANUFACTPAGE_DEVICEID_FC949X) {
+                ioc->prod_name = "LSIFC949X";
+                ioc->bus_type = FC;
+                ioc->errata_flag_1064 = 1;
+        }
         else if (pdev->device == MPI_MANUFACTPAGE_DEVID_53C1030) {
                 ioc->prod_name = "LSI53C1030";
                 ioc->bus_type = SCSI;
@@ -1179,6 +1209,9 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
                 ioc->bus_type = SCSI;
         }
 
+        if (ioc->errata_flag_1064)
+                pci_disable_io_access(pdev);
+
         sprintf(ioc->name, "ioc%d", ioc->id);
 
         spin_lock_init(&ioc->FreeQlock);
@@ -2667,7 +2700,7 @@ mpt_downloadboot(MPT_ADAPTER *ioc, int sleepFlag)
         /* prevent a second downloadboot and memory free with alt_ioc */
         if (ioc->alt_ioc && ioc->alt_ioc->cached_fw)
                 ioc->alt_ioc->cached_fw = NULL;
-        
+
         CHIPREG_WRITE32(&ioc->chip->WriteSequence, 0xFF);
         CHIPREG_WRITE32(&ioc->chip->WriteSequence, MPI_WRSEQ_1ST_KEY_VALUE);
         CHIPREG_WRITE32(&ioc->chip->WriteSequence, MPI_WRSEQ_2ND_KEY_VALUE);
@@ -2725,6 +2758,9 @@ mpt_downloadboot(MPT_ADAPTER *ioc, int sleepFlag)
         /* Write the LoadStartAddress to the DiagRw Address Register
          * using Programmed IO
          */
+        if (ioc->errata_flag_1064)
+                pci_enable_io_access(ioc->pcidev);
+
         CHIPREG_PIO_WRITE32(&ioc->pio_chip->DiagRwAddress, pFwHeader->LoadStartAddress);
         ddlprintk((MYIOC_s_INFO_FMT "LoadStart addr written 0x%x \n",
                 ioc->name, pFwHeader->LoadStartAddress));
@@ -2771,6 +2807,9 @@ mpt_downloadboot(MPT_ADAPTER *ioc, int sleepFlag)
         CHIPREG_PIO_WRITE32(&ioc->pio_chip->DiagRwAddress, 0x3F000000);
         CHIPREG_PIO_WRITE32(&ioc->pio_chip->DiagRwData, diagRwData);
 
+        if (ioc->errata_flag_1064)
+                pci_disable_io_access(ioc->pcidev);
+
         diag0val = CHIPREG_READ32(&ioc->chip->Diagnostic);
         ddlprintk((MYIOC_s_INFO_FMT "downloadboot diag0val=%x, turning off PREVENT_IOC_BOOT, DISABLE_ARM\n",
                 ioc->name, diag0val));