diff options
| author | Hariprasad Shenai | 2014-06-27 15:53:49 +0200 |
|---|---|---|
| committer | David S. Miller | 2014-07-02 03:56:10 +0200 |
| commit | fc5ab020965067c457a4b5a9eb15648b6874bef2 (patch) | |
| tree | 3d1894fdec0cd7c92a114a169220df135c8ccfc6 /drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | |
| parent | cxgb4: Use FW interface to get BAR0 value (diff) | |
| download | kernel-qcow2-linux-fc5ab020965067c457a4b5a9eb15648b6874bef2.tar.gz kernel-qcow2-linux-fc5ab020965067c457a4b5a9eb15648b6874bef2.tar.xz kernel-qcow2-linux-fc5ab020965067c457a4b5a9eb15648b6874bef2.zip | |
cxgb4: Replaced the backdoor mechanism to access the HW memory with PCIe Window method
Rip out a bunch of redundant PCI-E Memory Window Read/Write routines,
collapse the more general purpose routines into a single routine
thereby eliminating the need for a large stack frame (and extra data
copying) in the outer routine, change everything to use the improved
routine t4_memory_rw.
Based on origninal work by Casey Leedom <leedom@chelsio.com> and
Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/cxgb4.h')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h index 4fd215185f93..f338a7fcebf7 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h @@ -654,6 +654,7 @@ struct adapter { struct dentry *debugfs_root; spinlock_t stats_lock; + spinlock_t win0_lock ____cacheline_aligned_in_smp; }; /* Defined bit width of user definable filter tuples @@ -960,8 +961,17 @@ int t4_wait_dev_ready(struct adapter *adap); int t4_link_start(struct adapter *adap, unsigned int mbox, unsigned int port, struct link_config *lc); int t4_restart_aneg(struct adapter *adap, unsigned int mbox, unsigned int port); -int t4_memory_write(struct adapter *adap, int mtype, u32 addr, u32 len, - __be32 *buf); + +#define T4_MEMORY_WRITE 0 +#define T4_MEMORY_READ 1 +int t4_memory_rw(struct adapter *adap, int win, int mtype, u32 addr, u32 len, + __be32 *buf, int dir); +static inline int t4_memory_write(struct adapter *adap, int mtype, u32 addr, + u32 len, __be32 *buf) +{ + return t4_memory_rw(adap, 0, mtype, addr, len, buf, 0); +} + int t4_seeprom_wp(struct adapter *adapter, bool enable); int get_vpd_params(struct adapter *adapter, struct vpd_params *p); int t4_load_fw(struct adapter *adapter, const u8 *fw_data, unsigned int size); @@ -1059,7 +1069,6 @@ int t4_ofld_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf, int t4_handle_fw_rpl(struct adapter *adap, const __be64 *rpl); void t4_db_full(struct adapter *adapter); void t4_db_dropped(struct adapter *adapter); -int t4_mem_win_read_len(struct adapter *adap, u32 addr, __be32 *data, int len); int t4_fwaddrspace_write(struct adapter *adap, unsigned int mbox, u32 addr, u32 val); void t4_sge_decode_idma_state(struct adapter *adapter, int state); |