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Commit 9e5c598c authored by Rahul Lakkireddy's avatar Rahul Lakkireddy Committed by David S. Miller
Browse files

cxgb4: collect SGE queue context dump 



Collect SGE freelist queue and congestion manager contexts.

Signed-off-by: default avatarRahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 03e98b91

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

+8 −0
Original line number Diff line number Diff line
@@ -145,6 +145,14 @@ struct cudbg_tid_info_region_rev1 { 
	u32 reserved[16];

};



#define CUDBG_MAX_FL_QIDS 1024



struct cudbg_ch_cntxt {

	u32 cntxt_type;

	u32 cntxt_id;

	u32 data[SGE_CTXT_SIZE / 4];

};



#define CUDBG_MAX_RPLC_SIZE 128



struct cudbg_mps_tcam {

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

+1 −0
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ enum cudbg_dbg_entity_type { 
	CUDBG_PCIE_INDIRECT = 50,

	CUDBG_PM_INDIRECT = 51,

	CUDBG_TID_INFO = 54,

	CUDBG_DUMP_CONTEXT = 56,

	CUDBG_MPS_TCAM = 57,

	CUDBG_VPD_DATA = 58,

	CUDBG_LE_TCAM = 59,

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

+78 −0
Original line number Diff line number Diff line
@@ -1115,6 +1115,84 @@ int cudbg_collect_tid(struct cudbg_init *pdbg_init, 
	return rc;

}



int cudbg_dump_context_size(struct adapter *padap)

{

	u32 value, size;

	u8 flq;



	value = t4_read_reg(padap, SGE_FLM_CFG_A);



	/* Get number of data freelist queues */

	flq = HDRSTARTFLQ_G(value);

	size = CUDBG_MAX_FL_QIDS >> flq;



	/* Add extra space for congestion manager contexts.

	 * The number of CONM contexts are same as number of freelist

	 * queues.

	 */

	size += size;

	return size * sizeof(struct cudbg_ch_cntxt);

}



static void cudbg_read_sge_ctxt(struct cudbg_init *pdbg_init, u32 cid,

				enum ctxt_type ctype, u32 *data)

{

	struct adapter *padap = pdbg_init->adap;

	int rc = -1;



	/* Under heavy traffic, the SGE Queue contexts registers will be

	 * frequently accessed by firmware.

	 *

	 * To avoid conflicts with firmware, always ask firmware to fetch

	 * the SGE Queue contexts via mailbox. On failure, fallback to

	 * accessing hardware registers directly.

	 */

	if (is_fw_attached(pdbg_init))

		rc = t4_sge_ctxt_rd(padap, padap->mbox, cid, ctype, data);

	if (rc)

		t4_sge_ctxt_rd_bd(padap, cid, ctype, data);

}



int cudbg_collect_dump_context(struct cudbg_init *pdbg_init,

			       struct cudbg_buffer *dbg_buff,

			       struct cudbg_error *cudbg_err)

{

	struct adapter *padap = pdbg_init->adap;

	struct cudbg_buffer temp_buff = { 0 };

	struct cudbg_ch_cntxt *buff;

	u32 size, i = 0;

	int rc;



	rc = cudbg_dump_context_size(padap);

	if (rc <= 0)

		return CUDBG_STATUS_ENTITY_NOT_FOUND;



	size = rc;

	rc = cudbg_get_buff(dbg_buff, size, &temp_buff);

	if (rc)

		return rc;



	buff = (struct cudbg_ch_cntxt *)temp_buff.data;

	while (size > 0) {

		buff->cntxt_type = CTXT_FLM;

		buff->cntxt_id = i;

		cudbg_read_sge_ctxt(pdbg_init, i, CTXT_FLM, buff->data);

		buff++;

		size -= sizeof(struct cudbg_ch_cntxt);



		buff->cntxt_type = CTXT_CNM;

		buff->cntxt_id = i;

		cudbg_read_sge_ctxt(pdbg_init, i, CTXT_CNM, buff->data);

		buff++;

		size -= sizeof(struct cudbg_ch_cntxt);



		i++;

	}



	cudbg_write_and_release_buff(&temp_buff, dbg_buff);

	return rc;

}



static inline void cudbg_tcamxy2valmask(u64 x, u64 y, u8 *addr, u64 *mask)

{

	*mask = x | y;

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

+4 −0
Original line number Diff line number Diff line
@@ -123,6 +123,9 @@ int cudbg_collect_pm_indirect(struct cudbg_init *pdbg_init, 
int cudbg_collect_tid(struct cudbg_init *pdbg_init,

		      struct cudbg_buffer *dbg_buff,

		      struct cudbg_error *cudbg_err);

int cudbg_collect_dump_context(struct cudbg_init *pdbg_init,

			       struct cudbg_buffer *dbg_buff,

			       struct cudbg_error *cudbg_err);

int cudbg_collect_mps_tcam(struct cudbg_init *pdbg_init,

			   struct cudbg_buffer *dbg_buff,

			   struct cudbg_error *cudbg_err);
@@ -158,6 +161,7 @@ struct cudbg_entity_hdr *cudbg_get_entity_hdr(void *outbuf, int i); 
void cudbg_align_debug_buffer(struct cudbg_buffer *dbg_buff,

			      struct cudbg_entity_hdr *entity_hdr);

u32 cudbg_cim_obq_size(struct adapter *padap, int qid);

int cudbg_dump_context_size(struct adapter *padap);



struct cudbg_tcam;

void cudbg_fill_le_tcam_info(struct adapter *padap,

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

+4 −0
Original line number Diff line number Diff line
@@ -1670,6 +1670,10 @@ int t4_fwaddrspace_write(struct adapter *adap, unsigned int mbox, 
void t4_read_pace_tbl(struct adapter *adap, unsigned int pace_vals[NTX_SCHED]);

void t4_get_tx_sched(struct adapter *adap, unsigned int sched,

		     unsigned int *kbps, unsigned int *ipg, bool sleep_ok);

int t4_sge_ctxt_rd(struct adapter *adap, unsigned int mbox, unsigned int cid,

		   enum ctxt_type ctype, u32 *data);

int t4_sge_ctxt_rd_bd(struct adapter *adap, unsigned int cid,

		      enum ctxt_type ctype, u32 *data);

int t4_sched_params(struct adapter *adapter, int type, int level, int mode,

		    int rateunit, int ratemode, int channel, int class,

		    int minrate, int maxrate, int weight, int pktsize);