From fd5baf09cdf9170e0f92a112fd0ef19c29649330 Mon Sep 17 00:00:00 2001 From: Pavan Nikhilesh Date: Tue, 10 Apr 2018 02:30:26 +0530 Subject: [PATCH] event/octeontx: probe timvf PCIe devices On Octeontx HW, each event timer device is enumerated as separate SRIOV VF PCIe device. In order to expose as a event timer device: On PCIe probe, the driver stores the information associated with the PCIe device and later when application requests for a event timer device through `rte_event_timer_adapter_create` the driver infrastructure creates the timer adapter with earlier probed PCIe VF devices. Signed-off-by: Pavan Nikhilesh Acked-by: Jerin Jacob --- MAINTAINERS | 4 + doc/guides/eventdevs/octeontx.rst | 3 + drivers/event/octeontx/timvf_evdev.h | 33 ++++++ drivers/event/octeontx/timvf_probe.c | 148 +++++++++++++++++++++++++++ 4 files changed, 188 insertions(+) create mode 100644 drivers/event/octeontx/timvf_evdev.h create mode 100644 drivers/event/octeontx/timvf_probe.c diff --git a/MAINTAINERS b/MAINTAINERS index 431442e0ae..f43e3fec42 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -784,6 +784,10 @@ M: Santosh Shukla F: drivers/event/octeontx/ F: doc/guides/eventdevs/octeontx.rst +Cavium OCTEONTX timvf +M: Pavan Nikhilesh +F: drivers/event/octeontx/timvf_* + NXP DPAA2 eventdev M: Hemant Agrawal M: Nipun Gupta diff --git a/doc/guides/eventdevs/octeontx.rst b/doc/guides/eventdevs/octeontx.rst index 4fabe54f9f..4ace1669af 100644 --- a/doc/guides/eventdevs/octeontx.rst +++ b/doc/guides/eventdevs/octeontx.rst @@ -28,6 +28,9 @@ Features of the OCTEONTX SSOVF PMD are: - Open system with configurable amount of outstanding events - HW accelerated dequeue timeout support to enable power management - SR-IOV VF +- HW managed event timers support through TIMVF, with high precision and + time granularity of 1us. +- Up to 64 event timer adapters. Supported OCTEONTX SoCs ----------------------- diff --git a/drivers/event/octeontx/timvf_evdev.h b/drivers/event/octeontx/timvf_evdev.h new file mode 100644 index 0000000000..7e577edf4f --- /dev/null +++ b/drivers/event/octeontx/timvf_evdev.h @@ -0,0 +1,33 @@ +/* + * SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2017 Cavium, Inc + */ + +#ifndef __TIMVF_EVDEV_H__ +#define __TIMVF_EVDEV_H__ + +#include + +#include + +#define timvf_log(level, fmt, args...) \ + rte_log(RTE_LOG_ ## level, otx_logtype_timvf, \ + "[%s] %s() " fmt "\n", \ + RTE_STR(event_timer_octeontx), __func__, ## args) + +#define timvf_log_info(fmt, ...) timvf_log(INFO, fmt, ##__VA_ARGS__) +#define timvf_log_dbg(fmt, ...) timvf_log(DEBUG, fmt, ##__VA_ARGS__) +#define timvf_log_err(fmt, ...) timvf_log(ERR, fmt, ##__VA_ARGS__) +#define timvf_func_trace timvf_log_dbg + +extern int otx_logtype_timvf; + +struct timvf_info { + uint16_t domain; /* Domain id */ + uint8_t total_timvfs; /* Total timvf available in domain */ +}; + +int timvf_info(struct timvf_info *tinfo); +void *timvf_bar(uint8_t id, uint8_t bar); + +#endif /* __TIMVF_EVDEV_H__ */ diff --git a/drivers/event/octeontx/timvf_probe.c b/drivers/event/octeontx/timvf_probe.c new file mode 100644 index 0000000000..08dbd2be9b --- /dev/null +++ b/drivers/event/octeontx/timvf_probe.c @@ -0,0 +1,148 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2017 Cavium, Inc + */ + +#include +#include +#include +#include + +#include + +#include "ssovf_evdev.h" +#include "timvf_evdev.h" + +#ifndef PCI_VENDOR_ID_CAVIUM +#define PCI_VENDOR_ID_CAVIUM (0x177D) +#endif + +#define PCI_DEVICE_ID_OCTEONTX_TIM_VF (0xA051) +#define TIM_MAX_RINGS (64) + +struct timvf_res { + uint16_t domain; + uint16_t vfid; + void *bar0; + void *bar2; + void *bar4; +}; + +struct timdev { + uint8_t total_timvfs; + struct timvf_res rings[TIM_MAX_RINGS]; +}; + +static struct timdev tdev; + +int +timvf_info(struct timvf_info *tinfo) +{ + int i; + struct ssovf_info info; + + if (tinfo == NULL) + return -EINVAL; + + if (!tdev.total_timvfs) + return -ENODEV; + + if (ssovf_info(&info) < 0) + return -EINVAL; + + for (i = 0; i < tdev.total_timvfs; i++) { + if (info.domain != tdev.rings[i].domain) { + timvf_log_err("GRP error, vfid=%d/%d domain=%d/%d %p", + i, tdev.rings[i].vfid, + info.domain, tdev.rings[i].domain, + tdev.rings[i].bar0); + return -EINVAL; + } + } + + tinfo->total_timvfs = tdev.total_timvfs; + tinfo->domain = info.domain; + return 0; +} + +void* +timvf_bar(uint8_t id, uint8_t bar) +{ + if (rte_eal_process_type() != RTE_PROC_PRIMARY) + return NULL; + + if (id > tdev.total_timvfs) + return NULL; + + switch (bar) { + case 0: + return tdev.rings[id].bar0; + case 4: + return tdev.rings[id].bar4; + default: + return NULL; + } +} + +static int +timvf_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev) +{ + uint64_t val; + uint16_t vfid; + struct timvf_res *res; + + RTE_SET_USED(pci_drv); + + /* For secondary processes, the primary has done all the work */ + if (rte_eal_process_type() != RTE_PROC_PRIMARY) + return 0; + + if (pci_dev->mem_resource[0].addr == NULL || + pci_dev->mem_resource[4].addr == NULL) { + timvf_log_err("Empty bars %p %p", + pci_dev->mem_resource[0].addr, + pci_dev->mem_resource[4].addr); + return -ENODEV; + } + + val = rte_read64((uint8_t *)pci_dev->mem_resource[0].addr + + 0x100 /* TIM_VRINGX_BASE */); + vfid = (val >> 23) & 0xff; + if (vfid >= TIM_MAX_RINGS) { + timvf_log_err("Invalid vfid(%d/%d)", vfid, TIM_MAX_RINGS); + return -EINVAL; + } + + res = &tdev.rings[tdev.total_timvfs]; + res->vfid = vfid; + res->bar0 = pci_dev->mem_resource[0].addr; + res->bar2 = pci_dev->mem_resource[2].addr; + res->bar4 = pci_dev->mem_resource[4].addr; + res->domain = (val >> 7) & 0xffff; + tdev.total_timvfs++; + rte_wmb(); + + timvf_log_dbg("Domain=%d VFid=%d bar0 %p total_timvfs=%d", res->domain, + res->vfid, pci_dev->mem_resource[0].addr, + tdev.total_timvfs); + return 0; +} + + +static const struct rte_pci_id pci_timvf_map[] = { + { + RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, + PCI_DEVICE_ID_OCTEONTX_TIM_VF) + }, + { + .vendor_id = 0, + }, +}; + +static struct rte_pci_driver pci_timvf = { + .id_table = pci_timvf_map, + .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_IOVA_AS_VA, + .probe = timvf_probe, + .remove = NULL, +}; + +RTE_PMD_REGISTER_PCI(octeontx_timvf, pci_timvf); -- 2.20.1