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cxgb4: initialize hash-filter configuration

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Add support for hash-filter configuration on T6. Also, do basic
checks for the related initialization.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kumar Sanghvi 2017-11-01 08:53:00 +05:30 committed by David S. Miller
parent 0ba9a3b65c
commit 5c31254e35
6 changed files with 54 additions and 4 deletions
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6
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -366,6 +366,7 @@ struct adapter_params {
unsigned char crypto; /* HW capability for crypto */
unsigned char bypass;
unsigned char hash_filter;
unsigned int ofldq_wr_cred;
bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */
@ -1140,6 +1141,11 @@ static inline int is_offload(const struct adapter *adap)
return adap->params.offload;
}
static inline int is_hashfilter(const struct adapter *adap)
{
return adap->params.hash_filter;
}
static inline int is_pci_uld(const struct adapter *adap)
{
return adap->params.crypto;

22
drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
View File

@ -915,3 +915,25 @@ void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl)
complete(&ctx->completion);
}
}
int init_hash_filter(struct adapter *adap)
{
/* On T6, verify the necessary register configs and warn the user in
* case of improper config
*/
if (is_t6(adap->params.chip)) {
if (TCAM_ACTV_HIT_G(t4_read_reg(adap, LE_DB_RSP_CODE_0_A)) != 4)
goto err;
if (HASH_ACTV_HIT_G(t4_read_reg(adap, LE_DB_RSP_CODE_1_A)) != 4)
goto err;
} else {
dev_err(adap->pdev_dev, "Hash filter supported only on T6\n");
return -EINVAL;
}
adap->params.hash_filter = 1;
return 0;
err:
dev_warn(adap->pdev_dev, "Invalid hash filter config!\n");
return -EINVAL;
}

1
drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.h
View File

@ -45,4 +45,5 @@ int delete_filter(struct adapter *adapter, unsigned int fidx);
int writable_filter(struct filter_entry *f);
void clear_all_filters(struct adapter *adapter);
int init_hash_filter(struct adapter *adap);
#endif /* __CXGB4_FILTER_H */

14
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -3963,7 +3963,8 @@ static int adap_init0(struct adapter *adap)
if (ret < 0)
goto bye;
if (caps_cmd.ofldcaps) {
if (caps_cmd.ofldcaps ||
(caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_HASHFILTER))) {
/* query offload-related parameters */
params[0] = FW_PARAM_DEV(NTID);
params[1] = FW_PARAM_PFVF(SERVER_START);
@ -4000,8 +4001,13 @@ static int adap_init0(struct adapter *adap)
adap->vres.ddp.size = val[4] - val[3] + 1;
adap->params.ofldq_wr_cred = val[5];
adap->params.offload = 1;
adap->num_ofld_uld += 1;
if (caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_HASHFILTER)) {
if (init_hash_filter(adap) < 0)
goto bye;
} else {
adap->params.offload = 1;
adap->num_ofld_uld += 1;
}
}
if (caps_cmd.rdmacaps) {
params[0] = FW_PARAM_PFVF(STAG_START);
@ -5171,7 +5177,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
cxgb4_init_tc_flower(adapter);
}
if (is_offload(adapter)) {
if (is_offload(adapter) || is_hashfilter(adapter)) {
if (t4_read_reg(adapter, LE_DB_CONFIG_A) & HASHEN_F) {
u32 hash_base, hash_reg;

14
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
View File

@ -2933,6 +2933,20 @@
#define SSRAMINTPERR_V(x) ((x) << SSRAMINTPERR_S)
#define SSRAMINTPERR_F SSRAMINTPERR_V(1U)
#define LE_DB_RSP_CODE_0_A 0x19c74
#define TCAM_ACTV_HIT_S 0
#define TCAM_ACTV_HIT_M 0x1fU
#define TCAM_ACTV_HIT_V(x) ((x) << TCAM_ACTV_HIT_S)
#define TCAM_ACTV_HIT_G(x) (((x) >> TCAM_ACTV_HIT_S) & TCAM_ACTV_HIT_M)
#define LE_DB_RSP_CODE_1_A 0x19c78
#define HASH_ACTV_HIT_S 25
#define HASH_ACTV_HIT_M 0x1fU
#define HASH_ACTV_HIT_V(x) ((x) << HASH_ACTV_HIT_S)
#define HASH_ACTV_HIT_G(x) (((x) >> HASH_ACTV_HIT_S) & HASH_ACTV_HIT_M)
#define LE_3_DB_HASH_MASK_GEN_IPV4_T6_A 0x19eac
#define LE_4_DB_HASH_MASK_GEN_IPV4_T6_A 0x19eb0

1
drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
View File

@ -1092,6 +1092,7 @@ enum fw_caps_config_switch {
enum fw_caps_config_nic {
FW_CAPS_CONFIG_NIC = 0x00000001,
FW_CAPS_CONFIG_NIC_VM = 0x00000002,
FW_CAPS_CONFIG_NIC_HASHFILTER = 0x00000020,
};
enum fw_caps_config_ofld {