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Thu, 20 Feb 2025 10:56:11 -0800 (PST) Received: from sxavier-dev.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-addee79a984sm9572262a12.32.2025.02.20.10.56.08 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Feb 2025 10:56:11 -0800 (PST) From: Selvin Xavier To: leon@kernel.org, jgg@ziepe.ca Cc: linux-rdma@vger.kernel.org, andrew.gospodarek@broadcom.com, kalesh-anakkur.purayil@broadcom.com, netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, abeni@redhat.com, horms@kernel.org, michael.chan@broadcom.com, Selvin Xavier Subject: [PATCH rdma-next 6/9] RDMA/bnxt_re: Support the dump infrastructure Date: Thu, 20 Feb 2025 10:34:53 -0800 Message-Id: <1740076496-14227-7-git-send-email-selvin.xavier@broadcom.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1740076496-14227-1-git-send-email-selvin.xavier@broadcom.com> References: <1740076496-14227-1-git-send-email-selvin.xavier@broadcom.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Michael Chan Adds the stubs for the debug dump in bnxt_re driver. Each segment of the dump data holds a particalar resource type. get_dump_info returns the number of segments and the size of each segments. Driver currently supports segments for QP/CQ/SRQ/MR and for the generic host logs. While taking the dump, get_dump_data will be invoked for each of the segments and bnxt_re driver returns the data associated with each segment. Signed-off-by: Michael Chan Signed-off-by: Selvin Xavier --- drivers/infiniband/hw/bnxt_re/main.c | 85 +++++++++++++++++++++++++++++++++++- 1 file changed, 84 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c index 6b5a169..76dd0fa 100644 --- a/drivers/infiniband/hw/bnxt_re/main.c +++ b/drivers/infiniband/hw/bnxt_re/main.c @@ -497,10 +497,93 @@ static void bnxt_re_start_irq(void *handle, struct bnxt_msix_entry *ent) } } +#define BNXT_SEGMENT_ROCE 255 +#define BNXT_SEGMENT_QP_CTX 256 +#define BNXT_SEGMENT_SRQ_CTX 257 +#define BNXT_SEGMENT_CQ_CTX 258 +#define BNXT_SEGMENT_MR_CTX 270 + +static void bnxt_re_dump_ctx(struct bnxt_re_dev *rdev, u32 seg_id, void *buf, + u32 buf_len) +{ +} + +/* bnxt_re_snapdump - Collect RoCE debug data for coredump. + * @rdev - rdma device instance + * @buf - Pointer to dump buffer + * @buf_len - Buffer length + * + * This function will dump RoCE debug data to the coredump. + * + * Returns: Nothing + * + */ +static void bnxt_re_snapdump(struct bnxt_re_dev *rdev, void *buf, u32 buf_len) +{ +} + +#define BNXT_RE_TRACE_DUMP_SIZE 0x2000000 + +/* bnxt_re_get_dump_info - ULP callback from L2 driver to collect dump info + * @handle - en_dev information. L2 and RoCE device information + * @dump_flags - ethtool dump flags + * @dump - ulp structure containing all coredump segment info + * + * This function is the callback from the L2 driver to provide the list of + * dump segments for the ethtool coredump. + * + * Returns: Nothing + * + */ +static void bnxt_re_get_dump_info(void *handle, u32 dump_flags, + struct bnxt_ulp_dump *dump) +{ + struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(handle); + struct bnxt_ulp_dump_tbl *tbl = dump->seg_tbl; + struct bnxt_re_dev *rdev = en_info->rdev; + + dump->segs = 5; + tbl[0].seg_id = BNXT_SEGMENT_QP_CTX; + tbl[0].seg_len = rdev->rcfw.qp_ctxm_size * BNXT_RE_MAX_QDUMP_ENTRIES; + tbl[1].seg_id = BNXT_SEGMENT_CQ_CTX; + tbl[1].seg_len = rdev->rcfw.cq_ctxm_size * BNXT_RE_MAX_QDUMP_ENTRIES; + tbl[2].seg_id = BNXT_SEGMENT_MR_CTX; + tbl[2].seg_len = rdev->rcfw.mrw_ctxm_size * BNXT_RE_MAX_QDUMP_ENTRIES; + tbl[3].seg_id = BNXT_SEGMENT_SRQ_CTX; + tbl[3].seg_len = rdev->rcfw.srq_ctxm_size * BNXT_RE_MAX_QDUMP_ENTRIES; + tbl[4].seg_id = BNXT_SEGMENT_ROCE; + tbl[4].seg_len = BNXT_RE_TRACE_DUMP_SIZE; +} + +/* bnxt_re_get_dump_data - ULP callback from L2 driver to collect dump data + * @handle - en_dev information. L2 and RoCE device information + * @seg_id - segment ID of the dump + * @buf - dump buffer pointer + * @len - length of the buffer + * + * This function is the callback from the L2 driver to fill the buffer with + * coredump data for each segment. + * + * Returns: Nothing + * + */ +static void bnxt_re_get_dump_data(void *handle, u32 seg_id, void *buf, u32 len) +{ + struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(handle); + struct bnxt_re_dev *rdev = en_info->rdev; + + if (seg_id == BNXT_SEGMENT_ROCE) + return bnxt_re_snapdump(rdev, buf, len); + + bnxt_re_dump_ctx(rdev, seg_id, buf, len); +} + static struct bnxt_ulp_ops bnxt_re_ulp_ops = { .ulp_async_notifier = bnxt_re_async_notifier, .ulp_irq_stop = bnxt_re_stop_irq, - .ulp_irq_restart = bnxt_re_start_irq + .ulp_irq_restart = bnxt_re_start_irq, + .ulp_get_dump_info = bnxt_re_get_dump_info, + .ulp_get_dump_data = bnxt_re_get_dump_data, }; /* RoCE -> Net driver */