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Commit 5d700ecb authored by Hariprasad Shenai's avatar Hariprasad Shenai Committed by David S. Miller
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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: default avatarHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4f3a0fcf

drivers/net/ethernet/chelsio/cxgb4/cxgb4.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c

+1 −4
Original line number Diff line number Diff line
@@ -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);

drivers/net/ethernet/chelsio/cxgb4/t4_hw.c

+26 −0
Original line number Diff line number Diff line
@@ -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

drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h

+5 −1
Original line number Diff line number Diff line
@@ -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)