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authorDhananjay Phadke <dhananjay@netxen.com>2009-07-26 20:07:39 +0000
committerDavid S. Miller <davem@davemloft.net>2009-07-27 10:57:31 -0700
commit83ac51fa747c3a74372417629fcad4b110857b77 (patch)
tree02b85bda7727c4cb7b45c1f4e6a32e4aca8f91e7 /drivers/net/netxen/netxen_nic_init.c
parentca2ef330b5eb30e3bc7047f99fd4be9f1bad22be (diff)
netxen: annotate dma watchdog setup
o remove superfluous code to setup PCI dma watchdog for NX2031. o disable dma watchdog completely for NX3031 (not required). Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netxen/netxen_nic_init.c')
-rw-r--r--drivers/net/netxen/netxen_nic_init.c59
1 files changed, 35 insertions, 24 deletions
diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c
index 5d7a2c453363..91358459adb4 100644
--- a/drivers/net/netxen/netxen_nic_init.c
+++ b/drivers/net/netxen/netxen_nic_init.c
@@ -954,19 +954,20 @@ netxen_release_firmware(struct netxen_adapter *adapter)
release_firmware(adapter->fw);
}
-int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
+int netxen_init_dummy_dma(struct netxen_adapter *adapter)
{
- uint64_t addr;
- uint32_t hi;
- uint32_t lo;
+ u64 addr;
+ u32 hi, lo;
- adapter->dummy_dma.addr =
- pci_alloc_consistent(adapter->pdev,
+ if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
+ return 0;
+
+ adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
NETXEN_HOST_DUMMY_DMA_SIZE,
&adapter->dummy_dma.phys_addr);
if (adapter->dummy_dma.addr == NULL) {
- printk("%s: ERROR: Could not allocate dummy DMA memory\n",
- __func__);
+ dev_err(&adapter->pdev->dev,
+ "ERROR: Could not allocate dummy DMA memory\n");
return -ENOMEM;
}
@@ -977,29 +978,41 @@ int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
- if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
- uint32_t temp = 0;
- NXWR32(adapter, CRB_HOST_DUMMY_BUF, temp);
- }
-
return 0;
}
-void netxen_free_adapter_offload(struct netxen_adapter *adapter)
+/*
+ * NetXen DMA watchdog control:
+ *
+ * Bit 0 : enabled => R/O: 1 watchdog active, 0 inactive
+ * Bit 1 : disable_request => 1 req disable dma watchdog
+ * Bit 2 : enable_request => 1 req enable dma watchdog
+ * Bit 3-31 : unused
+ */
+void netxen_free_dummy_dma(struct netxen_adapter *adapter)
{
int i = 100;
+ u32 ctrl;
+
+ if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
+ return;
if (!adapter->dummy_dma.addr)
return;
- if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
- do {
- if (dma_watchdog_shutdown_request(adapter) == 1)
- break;
+ ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
+ if ((ctrl & 0x1) != 0) {
+ NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
+
+ while ((ctrl & 0x1) != 0) {
+
msleep(50);
- if (dma_watchdog_shutdown_poll_result(adapter) == 1)
+
+ ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
+
+ if (--i == 0)
break;
- } while (--i);
+ };
}
if (i) {
@@ -1008,10 +1021,8 @@ void netxen_free_adapter_offload(struct netxen_adapter *adapter)
adapter->dummy_dma.addr,
adapter->dummy_dma.phys_addr);
adapter->dummy_dma.addr = NULL;
- } else {
- printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
- adapter->netdev->name);
- }
+ } else
+ dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
}
int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)