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-rw-r--r--drivers/net/netxen/netxen_nic_hw.c63
1 files changed, 44 insertions, 19 deletions
diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
index e71ca30433ef..89bd5194e37a 100644
--- a/drivers/net/netxen/netxen_nic_hw.c
+++ b/drivers/net/netxen/netxen_nic_hw.c
@@ -1175,24 +1175,46 @@ netxen_nic_pci_set_crbwindow_2M(struct netxen_adapter *adapter, ulong off)
adapter->ahw.crb_win = window;
}
+static void __iomem *
+netxen_nic_map_indirect_address_128M(struct netxen_adapter *adapter,
+ ulong win_off, void __iomem **mem_ptr)
+{
+ ulong off = win_off;
+ void __iomem *addr;
+ resource_size_t mem_base;
+
+ if (ADDR_IN_WINDOW1(win_off))
+ off = NETXEN_CRB_NORMAL(win_off);
+
+ addr = pci_base_offset(adapter, off);
+ if (addr)
+ return addr;
+
+ if (adapter->ahw.pci_len0 == 0)
+ off -= NETXEN_PCI_CRBSPACE;
+
+ mem_base = pci_resource_start(adapter->pdev, 0);
+ *mem_ptr = ioremap(mem_base + (off & PAGE_MASK), PAGE_SIZE);
+ if (*mem_ptr)
+ addr = *mem_ptr + (off & (PAGE_SIZE - 1));
+
+ return addr;
+}
+
static int
netxen_nic_hw_write_wx_128M(struct netxen_adapter *adapter, ulong off, u32 data)
{
unsigned long flags;
- void __iomem *addr;
-
- if (ADDR_IN_WINDOW1(off))
- addr = NETXEN_CRB_NORMALIZE(adapter, off);
- else
- addr = pci_base_offset(adapter, off);
+ void __iomem *addr, *mem_ptr = NULL;
- BUG_ON(!addr);
+ addr = netxen_nic_map_indirect_address_128M(adapter, off, &mem_ptr);
+ if (!addr)
+ return -EIO;
- if (ADDR_IN_WINDOW1(off)) { /* Window 1 */
+ if (ADDR_IN_WINDOW1(off)) { /* Window 1 */
netxen_nic_io_write_128M(adapter, addr, data);
- } else { /* Window 0 */
+ } else { /* Window 0 */
write_lock_irqsave(&adapter->ahw.crb_lock, flags);
- addr = pci_base_offset(adapter, off);
netxen_nic_pci_set_crbwindow_128M(adapter, 0);
writel(data, addr);
netxen_nic_pci_set_crbwindow_128M(adapter,
@@ -1200,6 +1222,9 @@ netxen_nic_hw_write_wx_128M(struct netxen_adapter *adapter, ulong off, u32 data)
write_unlock_irqrestore(&adapter->ahw.crb_lock, flags);
}
+ if (mem_ptr)
+ iounmap(mem_ptr);
+
return 0;
}
@@ -1207,19 +1232,16 @@ static u32
netxen_nic_hw_read_wx_128M(struct netxen_adapter *adapter, ulong off)
{
unsigned long flags;
- void __iomem *addr;
+ void __iomem *addr, *mem_ptr = NULL;
u32 data;
- if (ADDR_IN_WINDOW1(off))
- addr = NETXEN_CRB_NORMALIZE(adapter, off);
- else
- addr = pci_base_offset(adapter, off);
-
- BUG_ON(!addr);
+ addr = netxen_nic_map_indirect_address_128M(adapter, off, &mem_ptr);
+ if (!addr)
+ return -EIO;
- if (ADDR_IN_WINDOW1(off)) { /* Window 1 */
+ if (ADDR_IN_WINDOW1(off)) { /* Window 1 */
data = netxen_nic_io_read_128M(adapter, addr);
- } else { /* Window 0 */
+ } else { /* Window 0 */
write_lock_irqsave(&adapter->ahw.crb_lock, flags);
netxen_nic_pci_set_crbwindow_128M(adapter, 0);
data = readl(addr);
@@ -1228,6 +1250,9 @@ netxen_nic_hw_read_wx_128M(struct netxen_adapter *adapter, ulong off)
write_unlock_irqrestore(&adapter->ahw.crb_lock, flags);
}
+ if (mem_ptr)
+ iounmap(mem_ptr);
+
return data;
}