diff options
author | Varun Prakash <varun@chelsio.com> | 2019-06-10 18:36:34 +0530 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2019-06-10 09:20:23 -0700 |
commit | a248384e6420ebda63f788d33fac1c0a081e57a8 (patch) | |
tree | a9c39190e749e184fcda98d85f54777bfee9a980 /drivers/net | |
parent | ba217a44f815ae06226461ab74a9df09b35e5a5f (diff) |
cxgb4/libcxgb/cxgb4i/cxgbit: enable eDRAM page pods for iSCSI
Page pods are used for direct data placement, this patch
enables eDRAM page pods if firmware supports this feature.
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 57 | ||||
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h | 1 | ||||
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h | 3 | ||||
-rw-r--r-- | drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c | 47 | ||||
-rw-r--r-- | drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h | 7 |
5 files changed, 104 insertions, 11 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index cd957a1eea45..54908002c786 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -782,6 +782,40 @@ static void free_msix_queue_irqs(struct adapter *adap) } } +static int setup_ppod_edram(struct adapter *adap) +{ + unsigned int param, val; + int ret; + + /* Driver sends FW_PARAMS_PARAM_DEV_PPOD_EDRAM read command to check + * if firmware supports ppod edram feature or not. If firmware + * returns 1, then driver can enable this feature by sending + * FW_PARAMS_PARAM_DEV_PPOD_EDRAM write command with value 1 to + * enable ppod edram feature. + */ + param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | + FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_PPOD_EDRAM)); + + ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, ¶m, &val); + if (ret < 0) { + dev_warn(adap->pdev_dev, + "querying PPOD_EDRAM support failed: %d\n", + ret); + return -1; + } + + if (val != 1) + return -1; + + ret = t4_set_params(adap, adap->mbox, adap->pf, 0, 1, ¶m, &val); + if (ret < 0) { + dev_err(adap->pdev_dev, + "setting PPOD_EDRAM failed: %d\n", ret); + return -1; + } + return 0; +} + /** * cxgb4_write_rss - write the RSS table for a given port * @pi: the port @@ -4166,6 +4200,13 @@ static int adap_init0_config(struct adapter *adapter, int reset) dev_err(adapter->pdev_dev, "HMA configuration failed with error %d\n", ret); + if (is_t6(adapter->params.chip)) { + ret = setup_ppod_edram(adapter); + if (!ret) + dev_info(adapter->pdev_dev, "Successfully enabled " + "ppod edram feature\n"); + } + /* * And finally tell the firmware to initialize itself using the * parameters from the Configuration File. @@ -4789,6 +4830,22 @@ static int adap_init0(struct adapter *adap) goto bye; adap->vres.iscsi.start = val[0]; adap->vres.iscsi.size = val[1] - val[0] + 1; + if (is_t6(adap->params.chip)) { + params[0] = FW_PARAM_PFVF(PPOD_EDRAM_START); + params[1] = FW_PARAM_PFVF(PPOD_EDRAM_END); + ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, + params, val); + if (!ret) { + adap->vres.ppod_edram.start = val[0]; + adap->vres.ppod_edram.size = + val[1] - val[0] + 1; + + dev_info(adap->pdev_dev, + "ppod edram start 0x%x end 0x%x size 0x%x\n", + val[0], val[1], + adap->vres.ppod_edram.size); + } + } /* LIO target and cxgb4i initiaitor */ adap->num_ofld_uld += 2; } diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h index 42ae28d651e7..cee582e36134 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h @@ -292,6 +292,7 @@ struct cxgb4_virt_res { /* virtualized HW resources */ struct cxgb4_range ocq; struct cxgb4_range key; unsigned int ncrypto_fc; + struct cxgb4_range ppod_edram; }; struct chcr_stats_debug { diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h index 0be4ce520352..65313f6b5704 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h +++ b/drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h @@ -1270,6 +1270,7 @@ enum fw_params_param_dev { FW_PARAMS_PARAM_DEV_TPCHMAP = 0x1F, FW_PARAMS_PARAM_DEV_HMA_SIZE = 0x20, FW_PARAMS_PARAM_DEV_RDMA_WRITE_WITH_IMM = 0x21, + FW_PARAMS_PARAM_DEV_PPOD_EDRAM = 0x23, FW_PARAMS_PARAM_DEV_RI_WRITE_CMPL_WR = 0x24, FW_PARAMS_PARAM_DEV_OPAQUE_VIID_SMT_EXTN = 0x27, FW_PARAMS_PARAM_DEV_HASHFILTER_WITH_OFLD = 0x28, @@ -1332,6 +1333,8 @@ enum fw_params_param_pfvf { FW_PARAMS_PARAM_PFVF_RAWF_END = 0x37, FW_PARAMS_PARAM_PFVF_NCRYPTO_LOOKASIDE = 0x39, FW_PARAMS_PARAM_PFVF_PORT_CAPS32 = 0x3A, + FW_PARAMS_PARAM_PFVF_PPOD_EDRAM_START = 0x3B, + FW_PARAMS_PARAM_PFVF_PPOD_EDRAM_END = 0x3C, FW_PARAMS_PARAM_PFVF_LINK_STATE = 0x40, }; diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c index e2919005ead3..21034536c9c5 100644 --- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c +++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c @@ -123,6 +123,9 @@ static int ppm_get_cpu_entries(struct cxgbi_ppm *ppm, unsigned int count, unsigned int cpu; int i; + if (!ppm->pool) + return -EINVAL; + cpu = get_cpu(); pool = per_cpu_ptr(ppm->pool, cpu); spin_lock_bh(&pool->lock); @@ -169,7 +172,9 @@ static int ppm_get_entries(struct cxgbi_ppm *ppm, unsigned int count, } ppm->next = i + count; - if (ppm->next >= ppm->bmap_index_max) + if (ppm->max_index_in_edram && (ppm->next >= ppm->max_index_in_edram)) + ppm->next = 0; + else if (ppm->next >= ppm->bmap_index_max) ppm->next = 0; spin_unlock_bh(&ppm->map_lock); @@ -382,18 +387,36 @@ static struct cxgbi_ppm_pool *ppm_alloc_cpu_pool(unsigned int *total, int cxgbi_ppm_init(void **ppm_pp, struct net_device *ndev, struct pci_dev *pdev, void *lldev, - struct cxgbi_tag_format *tformat, - unsigned int ppmax, - unsigned int llimit, - unsigned int start, - unsigned int reserve_factor) + struct cxgbi_tag_format *tformat, unsigned int iscsi_size, + unsigned int llimit, unsigned int start, + unsigned int reserve_factor, unsigned int iscsi_edram_start, + unsigned int iscsi_edram_size) { struct cxgbi_ppm *ppm = (struct cxgbi_ppm *)(*ppm_pp); struct cxgbi_ppm_pool *pool = NULL; - unsigned int ppmax_pool = 0; unsigned int pool_index_max = 0; - unsigned int alloc_sz; + unsigned int ppmax_pool = 0; unsigned int ppod_bmap_size; + unsigned int alloc_sz; + unsigned int ppmax; + + if (!iscsi_edram_start) + iscsi_edram_size = 0; + + if (iscsi_edram_size && + ((iscsi_edram_start + iscsi_edram_size) != start)) { + pr_err("iscsi ppod region not contiguous: EDRAM start 0x%x " + "size 0x%x DDR start 0x%x\n", + iscsi_edram_start, iscsi_edram_size, start); + return -EINVAL; + } + + if (iscsi_edram_size) { + reserve_factor = 0; + start = iscsi_edram_start; + } + + ppmax = (iscsi_edram_size + iscsi_size) >> PPOD_SIZE_SHIFT; if (ppm) { pr_info("ippm: %s, ppm 0x%p,0x%p already initialized, %u/%u.\n", @@ -434,6 +457,14 @@ int cxgbi_ppm_init(void **ppm_pp, struct net_device *ndev, __func__, ppmax, ppmax_pool, ppod_bmap_size, start, end); } + if (iscsi_edram_size) { + unsigned int first_ddr_idx = + iscsi_edram_size >> PPOD_SIZE_SHIFT; + + ppm->max_index_in_edram = first_ddr_idx - 1; + bitmap_set(ppm->ppod_bmap, first_ddr_idx, 1); + pr_debug("reserved %u ppod in bitmap\n", first_ddr_idx); + } spin_lock_init(&ppm->map_lock); kref_init(&ppm->refcnt); diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h index a91ad766cef0..7b02c200dd1e 100644 --- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h +++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h @@ -143,6 +143,7 @@ struct cxgbi_ppm { spinlock_t map_lock; /* ppm map lock */ unsigned int bmap_index_max; unsigned int next; + unsigned int max_index_in_edram; unsigned long *ppod_bmap; struct cxgbi_ppod_data ppod_data[0]; }; @@ -324,9 +325,9 @@ int cxgbi_ppm_ppods_reserve(struct cxgbi_ppm *, unsigned short nr_pages, unsigned long caller_data); int cxgbi_ppm_init(void **ppm_pp, struct net_device *, struct pci_dev *, void *lldev, struct cxgbi_tag_format *, - unsigned int ppmax, unsigned int llimit, - unsigned int start, - unsigned int reserve_factor); + unsigned int iscsi_size, unsigned int llimit, + unsigned int start, unsigned int reserve_factor, + unsigned int edram_start, unsigned int edram_size); int cxgbi_ppm_release(struct cxgbi_ppm *ppm); void cxgbi_tagmask_check(unsigned int tagmask, struct cxgbi_tag_format *); unsigned int cxgbi_tagmask_set(unsigned int ppmax); |