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netxen: onchip memory access change

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Add support for different windowing scheme for on chip
memory in future chip revisions. This is required by
diagnostic tools.

Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amit Kumar Salecha
2009-10-16 15:50:09 +00:00
committed by David S. Miller
parent 0be367bd5d
commit 6abb4b83ea
3 changed files with 17 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/netxen/netxen_nic_hw.c
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@@ -31,6 +31,7 @@
#define MASK(n) ((1ULL<<(n))-1)
#define MN_WIN(addr) (((addr & 0x1fc0000) >> 1) | ((addr >> 25) & 0x3ff))
#define OCM_WIN(addr) (((addr & 0x1ff0000) >> 1) | ((addr >> 25) & 0x3ff))
#define OCM_WIN_P3P(addr) (addr & 0xffc0000)
#define MS_WIN(addr) (addr & 0x0ffc0000)
#define GET_MEM_OFFS_2M(addr) (addr & MASK(18))
@@ -1338,7 +1339,7 @@ static int
netxen_nic_pci_set_window_2M(struct netxen_adapter *adapter,
u64 addr, u32 *start)
{
u32 win_read, window;
u32 window;
struct pci_dev *pdev = adapter->pdev;
if ((addr & 0x00ff800) == 0xff800) {
@@ -1347,14 +1348,14 @@ netxen_nic_pci_set_window_2M(struct netxen_adapter *adapter,
return -EIO;
}
window = OCM_WIN(addr);
if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
window = OCM_WIN_P3P(addr);
else
window = OCM_WIN(addr);
writel(window, adapter->ahw.ocm_win_crb);
win_read = readl(adapter->ahw.ocm_win_crb);
if ((win_read >> 7) != window) {
if (printk_ratelimit())
dev_warn(&pdev->dev, "failed to set OCM window\n");
return -EIO;
}
/* read back to flush */
readl(adapter->ahw.ocm_win_crb);
adapter->ahw.ocm_win = window;
*start = NETXEN_PCI_OCM0_2M + GET_MEM_OFFS_2M(addr);