diff options
| -rw-r--r-- | drivers/net/netxen/netxen_nic_hw.c | 63 |
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; } |