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cxgb4: Add sge ec context flush service 

Add function to flush the sge ec context cache, and utilize
this new function in the driver

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Hariprasad Shenai 2015-06-05 14:24:48 +05:30 committed by David S. Miller
parent 4f3a0fcfb6
commit 5d700ecb06
4 changed files with 33 additions and 5 deletions
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1
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -1410,6 +1410,7 @@ int t4_ctrl_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
unsigned int vf, unsigned int eqid);
int t4_ofld_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
unsigned int vf, unsigned int eqid);
int t4_sge_ctxt_flush(struct adapter *adap, unsigned int mbox);
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);

5
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -2007,11 +2007,8 @@ EXPORT_SYMBOL(cxgb4_iscsi_init);
int cxgb4_flush_eq_cache(struct net_device *dev)
{
struct adapter *adap = netdev2adap(dev);
int ret;
ret = t4_fwaddrspace_write(adap, adap->mbox,
0xe1000000 + SGE_CTXT_CMD_A, 0x20000000);
return ret;
return t4_sge_ctxt_flush(adap, adap->mbox);
}
EXPORT_SYMBOL(cxgb4_flush_eq_cache);

26
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
View File

@ -4529,6 +4529,32 @@ void t4_sge_decode_idma_state(struct adapter *adapter, int state)
sge_regs[i], t4_read_reg(adapter, sge_regs[i]));
}
/**
* t4_sge_ctxt_flush - flush the SGE context cache
* @adap: the adapter
* @mbox: mailbox to use for the FW command
*
* Issues a FW command through the given mailbox to flush the
* SGE context cache.
*/
int t4_sge_ctxt_flush(struct adapter *adap, unsigned int mbox)
{
int ret;
u32 ldst_addrspace;
struct fw_ldst_cmd c;
memset(&c, 0, sizeof(c));
ldst_addrspace = FW_LDST_CMD_ADDRSPACE_V(FW_LDST_ADDRSPC_SGE_EGRC);
c.op_to_addrspace = cpu_to_be32(FW_CMD_OP_V(FW_LDST_CMD) |
FW_CMD_REQUEST_F | FW_CMD_READ_F |
ldst_addrspace);
c.cycles_to_len16 = cpu_to_be32(FW_LEN16(c));
c.u.idctxt.msg_ctxtflush = cpu_to_be32(FW_LDST_CMD_CTXTFLUSH_F);
ret = t4_wr_mbox(adap, mbox, &c, sizeof(c), &c);
return ret;
}
/**
* t4_fw_hello - establish communication with FW
* @adap: the adapter

6
drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
View File

@ -772,7 +772,7 @@ struct fw_ldst_cmd {
} addrval;
struct fw_ldst_idctxt {
__be32 physid;
__be32 msg_pkd;
__be32 msg_ctxtflush;
__be32 ctxt_data7;
__be32 ctxt_data6;
__be32 ctxt_data5;
@ -834,6 +834,10 @@ struct fw_ldst_cmd {
#define FW_LDST_CMD_MSG_S 31
#define FW_LDST_CMD_MSG_V(x) ((x) << FW_LDST_CMD_MSG_S)
#define FW_LDST_CMD_CTXTFLUSH_S 30
#define FW_LDST_CMD_CTXTFLUSH_V(x) ((x) << FW_LDST_CMD_CTXTFLUSH_S)
#define FW_LDST_CMD_CTXTFLUSH_F FW_LDST_CMD_CTXTFLUSH_V(1U)
#define FW_LDST_CMD_PADDR_S 8
#define FW_LDST_CMD_PADDR_V(x) ((x) << FW_LDST_CMD_PADDR_S)