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authorMichael Chan <mchan@broadcom.com>2013-01-23 07:21:52 +0400
committerDavid S. Miller <davem@davemloft.net>2013-01-23 22:58:29 +0400
commitad9b4359c7839d4d87aad2c0d50c8a2ef3bcddb3 (patch)
treef64349d80b54c58cd85f5f6e8fcb756c07c1d322 /drivers/net/ethernet/broadcom/cnic_if.h
parent580d9d081341aad5341884f9e6b070c01512e94c (diff)
downloadlinux-ad9b4359c7839d4d87aad2c0d50c8a2ef3bcddb3.tar.xz
cnic, bnx2x: Add CNIC_DRV_STATE_HANDLES_IRQ to ethdev->drv_state
In INTA mode, cnic and bnx2x share the same IRQ. During chip reset, for example, cnic will stop servicing IRQs after it has shutdown the cnic hardware resources. However, the shared IRQ is still active as bnx2x needs to finish the reset. There is a window when bnx2x does not know that cnic is no longer handling IRQ and things don't always work properly. Add a flag to tell bnx2x that cnic is handling IRQ. The flag is set before the first cnic IRQ is expected and cleared when no more cnic IRQs are expected, so there should be no race conditions. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Ariel Elior <ariele@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/cnic_if.h')
-rw-r--r--drivers/net/ethernet/broadcom/cnic_if.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/cnic_if.h b/drivers/net/ethernet/broadcom/cnic_if.h
index 2a35436f9095..0c9367a0f57d 100644
--- a/drivers/net/ethernet/broadcom/cnic_if.h
+++ b/drivers/net/ethernet/broadcom/cnic_if.h
@@ -179,6 +179,7 @@ struct cnic_eth_dev {
#define CNIC_DRV_STATE_NO_ISCSI_OOO 0x00000004
#define CNIC_DRV_STATE_NO_ISCSI 0x00000008
#define CNIC_DRV_STATE_NO_FCOE 0x00000010
+#define CNIC_DRV_STATE_HANDLES_IRQ 0x00000020
u32 chip_id;
u32 max_kwqe_pending;
struct pci_dev *pdev;