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GET /api/patches/28113/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 28113,
    "url": "https://patches.dpdk.org/api/patches/28113/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/20170831063719.19273-4-santosh.shukla@caviumnetworks.com/",
    "project": {
        "id": 1,
        "url": "https://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
        "webscm_url": "http://git.dpdk.org/dpdk",
        "list_archive_url": "https://inbox.dpdk.org/dev",
        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<20170831063719.19273-4-santosh.shukla@caviumnetworks.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20170831063719.19273-4-santosh.shukla@caviumnetworks.com",
    "date": "2017-08-31T06:37:12",
    "name": "[dpdk-dev,v2,03/10] mempool/octeontx: probe fpavf pcie devices",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "3f63b92b988cb21be550677a426322cc5ddddaeb",
    "submitter": {
        "id": 480,
        "url": "https://patches.dpdk.org/api/people/480/?format=api",
        "name": "Santosh Shukla",
        "email": "santosh.shukla@caviumnetworks.com"
    },
    "delegate": null,
    "mbox": "https://patches.dpdk.org/project/dpdk/patch/20170831063719.19273-4-santosh.shukla@caviumnetworks.com/mbox/",
    "series": [],
    "comments": "https://patches.dpdk.org/api/patches/28113/comments/",
    "check": "fail",
    "checks": "https://patches.dpdk.org/api/patches/28113/checks/",
    "tags": {},
    "related": [],
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            "from [92.243.14.124] (localhost [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id A2190330D;\n\tThu, 31 Aug 2017 08:38:08 +0200 (CEST)",
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        "Authentication-Results": "spf=none (sender IP is )\n\tsmtp.mailfrom=Santosh.Shukla@cavium.com; ",
        "From": "Santosh Shukla <santosh.shukla@caviumnetworks.com>",
        "To": "dev@dpdk.org,\n\tolivier.matz@6wind.com",
        "Cc": "jerin.jacob@caviumnetworks.com, john.mcnamara@intel.com,\n\tthomas@monjalon.net, hemant.agrawal@nxp.com,\n\tSantosh Shukla <santosh.shukla@caviumnetworks.com>",
        "Date": "Thu, 31 Aug 2017 12:07:12 +0530",
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        "Subject": "[dpdk-dev] [PATCH v2 03/10] mempool/octeontx: probe fpavf pcie\n\tdevices",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.15",
        "Precedence": "list",
        "List-Id": "DPDK patches and discussions <dev.dpdk.org>",
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        "Errors-To": "dev-bounces@dpdk.org",
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    },
    "content": "A mempool device is set of PCIe vfs.\nOn Octeontx HW, each mempool devices are enumerated as\nseparate SRIOV VF PCIe device.\n\nIn order to expose as a mempool device:\nOn PCIe probe, the driver stores the information associated with the\nPCIe device and later upon application pool request\n(e.g. rte_mempool_create_empty), Infrastructure creates a pool device\nwith earlier probed PCIe VF devices.\n\nSigned-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>\nSigned-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>\n---\n drivers/mempool/octeontx/octeontx_fpavf.c | 151 ++++++++++++++++++++++++++++++\n drivers/mempool/octeontx/octeontx_fpavf.h |  39 ++++++++\n 2 files changed, 190 insertions(+)",
    "diff": "diff --git a/drivers/mempool/octeontx/octeontx_fpavf.c b/drivers/mempool/octeontx/octeontx_fpavf.c\nindex 9bb7759c0..0b4a9357f 100644\n--- a/drivers/mempool/octeontx/octeontx_fpavf.c\n+++ b/drivers/mempool/octeontx/octeontx_fpavf.c\n@@ -29,3 +29,154 @@\n  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n  */\n+\n+#include <stdlib.h>\n+#include <string.h>\n+#include <stdbool.h>\n+#include <stdio.h>\n+#include <unistd.h>\n+#include <fcntl.h>\n+#include <errno.h>\n+#include <sys/mman.h>\n+\n+#include <rte_atomic.h>\n+#include <rte_eal.h>\n+#include <rte_pci.h>\n+#include <rte_errno.h>\n+#include <rte_memory.h>\n+#include <rte_malloc.h>\n+#include <rte_spinlock.h>\n+\n+#include \"octeontx_fpavf.h\"\n+\n+struct fpavf_res {\n+\tvoid\t\t*pool_stack_base;\n+\tvoid\t\t*bar0;\n+\tuint64_t\tstack_ln_ptr;\n+\tuint16_t\tdomain_id;\n+\tuint16_t\tvf_id;\t/* gpool_id */\n+\tuint16_t\tsz128;\t/* Block size in cache lines */\n+\tbool\t\tis_inuse;\n+};\n+\n+struct octeontx_fpadev {\n+\trte_spinlock_t lock;\n+\tuint8_t\ttotal_gpool_cnt;\n+\tstruct fpavf_res pool[FPA_VF_MAX];\n+};\n+\n+static struct octeontx_fpadev fpadev;\n+\n+static void\n+octeontx_fpavf_setup(void)\n+{\n+\tuint8_t i;\n+\tstatic bool init_once;\n+\n+\tif (!init_once) {\n+\t\trte_spinlock_init(&fpadev.lock);\n+\t\tfpadev.total_gpool_cnt = 0;\n+\n+\t\tfor (i = 0; i < FPA_VF_MAX; i++) {\n+\n+\t\t\tfpadev.pool[i].domain_id = ~0;\n+\t\t\tfpadev.pool[i].stack_ln_ptr = 0;\n+\t\t\tfpadev.pool[i].sz128 = 0;\n+\t\t\tfpadev.pool[i].bar0 = NULL;\n+\t\t\tfpadev.pool[i].pool_stack_base = NULL;\n+\t\t\tfpadev.pool[i].is_inuse = false;\n+\t\t}\n+\t\tinit_once = 1;\n+\t}\n+}\n+\n+static int\n+octeontx_fpavf_identify(void *bar0)\n+{\n+\tuint64_t val;\n+\tuint16_t domain_id;\n+\tuint16_t vf_id;\n+\tuint64_t stack_ln_ptr;\n+\n+\tval = fpavf_read64((void *)((uintptr_t)bar0 +\n+\t\t\t\tFPA_VF_VHAURA_CNT_THRESHOLD(0)));\n+\n+\tdomain_id = (val >> 8) & 0xffff;\n+\tvf_id = (val >> 24) & 0xffff;\n+\n+\tstack_ln_ptr = fpavf_read64((void *)((uintptr_t)bar0 +\n+\t\t\t\t\tFPA_VF_VHPOOL_THRESHOLD(0)));\n+\tif (vf_id >= FPA_VF_MAX) {\n+\t\tfpavf_log_err(\"vf_id(%d) greater than max vf (32)\\n\", vf_id);\n+\t\treturn -1;\n+\t}\n+\n+\tif (fpadev.pool[vf_id].is_inuse) {\n+\t\tfpavf_log_err(\"vf_id %d is_inuse\\n\", vf_id);\n+\t\treturn -1;\n+\t}\n+\n+\tfpadev.pool[vf_id].domain_id = domain_id;\n+\tfpadev.pool[vf_id].vf_id = vf_id;\n+\tfpadev.pool[vf_id].bar0 = bar0;\n+\tfpadev.pool[vf_id].stack_ln_ptr = stack_ln_ptr;\n+\n+\t/* SUCCESS */\n+\treturn vf_id;\n+}\n+\n+/* FPAVF pcie device aka mempool probe */\n+static int\n+fpavf_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)\n+{\n+\tuint8_t *idreg;\n+\tint res;\n+\tstruct fpavf_res *fpa;\n+\n+\tRTE_SET_USED(pci_drv);\n+\tRTE_SET_USED(fpa);\n+\n+\t/* For secondary processes, the primary has done all the work */\n+\tif (rte_eal_process_type() != RTE_PROC_PRIMARY)\n+\t\treturn 0;\n+\n+\tif (pci_dev->mem_resource[0].addr == NULL) {\n+\t\tfpavf_log_err(\"Empty bars %p \", pci_dev->mem_resource[0].addr);\n+\t\treturn -ENODEV;\n+\t}\n+\tidreg = pci_dev->mem_resource[0].addr;\n+\n+\tocteontx_fpavf_setup();\n+\n+\tres = octeontx_fpavf_identify(idreg);\n+\tif (res < 0)\n+\t\treturn -1;\n+\n+\tfpa = &fpadev.pool[res];\n+\tfpadev.total_gpool_cnt++;\n+\trte_wmb();\n+\n+\tfpavf_log_dbg(\"total_fpavfs %d bar0 %p domain %d vf %d stk_ln_ptr 0x%x\",\n+\t\t       fpadev.total_gpool_cnt, fpa->bar0, fpa->domain_id,\n+\t\t       fpa->vf_id, (unsigned int)fpa->stack_ln_ptr);\n+\n+\treturn 0;\n+}\n+\n+static const struct rte_pci_id pci_fpavf_map[] = {\n+\t{\n+\t\tRTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM,\n+\t\t\t\tPCI_DEVICE_ID_OCTEONTX_FPA_VF)\n+\t},\n+\t{\n+\t\t.vendor_id = 0,\n+\t},\n+};\n+\n+static struct rte_pci_driver pci_fpavf = {\n+\t.id_table = pci_fpavf_map,\n+\t.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_IOVA_AS_VA,\n+\t.probe = fpavf_probe,\n+};\n+\n+RTE_PMD_REGISTER_PCI(octeontx_fpavf, pci_fpavf);\ndiff --git a/drivers/mempool/octeontx/octeontx_fpavf.h b/drivers/mempool/octeontx/octeontx_fpavf.h\nindex 1c703725c..c43b1a7d2 100644\n--- a/drivers/mempool/octeontx/octeontx_fpavf.h\n+++ b/drivers/mempool/octeontx/octeontx_fpavf.h\n@@ -34,6 +34,7 @@\n #define\t__OCTEONTX_FPAVF_H__\n \n #include <rte_debug.h>\n+#include <rte_io.h>\n \n #ifdef RTE_LIBRTE_OCTEONTX_MEMPOOL_DEBUG\n #define fpavf_log_info(fmt, args...) \\\n@@ -87,4 +88,42 @@\n #define\tFPA_VF0_APERTURE_SHIFT\t\t22\n #define FPA_AURA_SET_SIZE\t\t16\n \n+\n+/*\n+ * In Cavium OcteonTX SoC, all accesses to the device registers are\n+ * implictly strongly ordered. So, The relaxed version of IO operation is\n+ * safe to use with out any IO memory barriers.\n+ */\n+#define fpavf_read64 rte_read64_relaxed\n+#define fpavf_write64 rte_write64_relaxed\n+\n+/* ARM64 specific functions */\n+#if defined(RTE_ARCH_ARM64)\n+#define fpavf_load_pair(val0, val1, addr) ({\t\t\\\n+\t\t\tasm volatile(\t\t\t\\\n+\t\t\t\"ldp %x[x0], %x[x1], [%x[p1]]\"\t\\\n+\t\t\t:[x0]\"=r\"(val0), [x1]\"=r\"(val1) \\\n+\t\t\t:[p1]\"r\"(addr)\t\t\t\\\n+\t\t\t); })\n+\n+#define fpavf_store_pair(val0, val1, addr) ({\t\t\\\n+\t\t\tasm volatile(\t\t\t\\\n+\t\t\t\"stp %x[x0], %x[x1], [%x[p1]]\"\t\\\n+\t\t\t::[x0]\"r\"(val0), [x1]\"r\"(val1), [p1]\"r\"(addr) \\\n+\t\t\t); })\n+#else /* Un optimized functions for building on non arm64 arch */\n+\n+#define fpavf_load_pair(val0, val1, addr)\t\t\\\n+do {\t\t\t\t\t\t\t\\\n+\tval0 = rte_read64(addr);\t\t\t\\\n+\tval1 = rte_read64(((uint8_t *)addr) + 8);\t\\\n+} while (0)\n+\n+#define fpavf_store_pair(val0, val1, addr)\t\t\\\n+do {\t\t\t\t\t\t\t\\\n+\trte_write64(val0, addr);\t\t\t\\\n+\trte_write64(val1, (((uint8_t *)addr) + 8));\t\\\n+} while (0)\n+#endif\n+\n #endif\t/* __OCTEONTX_FPAVF_H__ */\n",
    "prefixes": [
        "dpdk-dev",
        "v2",
        "03/10"
    ]
}