diff options
author | Luca Boccassi <luca.boccassi@gmail.com> | 2017-11-08 14:15:11 +0000 |
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committer | Luca Boccassi <luca.boccassi@gmail.com> | 2017-11-08 14:45:54 +0000 |
commit | 055c52583a2794da8ba1e85a48cce3832372b12f (patch) | |
tree | 8ceb1cb78fbb46a0f341f8ee24feb3c6b5540013 /lib/librte_eal/bsdapp/eal/eal_pci.c | |
parent | f239aed5e674965691846e8ce3f187dd47523689 (diff) |
New upstream version 17.11-rc3
Change-Id: I6a5baa40612fe0c20f30b5fa773a6cbbac63a685
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'lib/librte_eal/bsdapp/eal/eal_pci.c')
-rw-r--r-- | lib/librte_eal/bsdapp/eal/eal_pci.c | 670 |
1 files changed, 0 insertions, 670 deletions
diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c deleted file mode 100644 index 04eacdcc..00000000 --- a/lib/librte_eal/bsdapp/eal/eal_pci.c +++ /dev/null @@ -1,670 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <ctype.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdarg.h> -#include <unistd.h> -#include <inttypes.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <errno.h> -#include <dirent.h> -#include <limits.h> -#include <sys/queue.h> -#include <sys/mman.h> -#include <sys/ioctl.h> -#include <sys/pciio.h> -#include <dev/pci/pcireg.h> - -#if defined(RTE_ARCH_X86) -#include <machine/cpufunc.h> -#endif - -#include <rte_interrupts.h> -#include <rte_log.h> -#include <rte_pci.h> -#include <rte_common.h> -#include <rte_launch.h> -#include <rte_memory.h> -#include <rte_memzone.h> -#include <rte_eal.h> -#include <rte_eal_memconfig.h> -#include <rte_per_lcore.h> -#include <rte_lcore.h> -#include <rte_malloc.h> -#include <rte_string_fns.h> -#include <rte_debug.h> -#include <rte_devargs.h> - -#include "eal_filesystem.h" -#include "eal_private.h" - -/** - * @file - * PCI probing under linux - * - * This code is used to simulate a PCI probe by parsing information in - * sysfs. Moreover, when a registered driver matches a device, the - * kernel driver currently using it is unloaded and replaced by - * igb_uio module, which is a very minimal userland driver for Intel - * network card, only providing access to PCI BAR to applications, and - * enabling bus master. - */ - -extern struct rte_pci_bus rte_pci_bus; - -/* Map pci device */ -int -rte_pci_map_device(struct rte_pci_device *dev) -{ - int ret = -1; - - /* try mapping the NIC resources */ - switch (dev->kdrv) { - case RTE_KDRV_NIC_UIO: - /* map resources for devices that use uio */ - ret = pci_uio_map_resource(dev); - break; - default: - RTE_LOG(DEBUG, EAL, - " Not managed by a supported kernel driver, skipped\n"); - ret = 1; - break; - } - - return ret; -} - -/* Unmap pci device */ -void -rte_pci_unmap_device(struct rte_pci_device *dev) -{ - /* try unmapping the NIC resources */ - switch (dev->kdrv) { - case RTE_KDRV_NIC_UIO: - /* unmap resources for devices that use uio */ - pci_uio_unmap_resource(dev); - break; - default: - RTE_LOG(DEBUG, EAL, - " Not managed by a supported kernel driver, skipped\n"); - break; - } -} - -void -pci_uio_free_resource(struct rte_pci_device *dev, - struct mapped_pci_resource *uio_res) -{ - rte_free(uio_res); - - if (dev->intr_handle.fd) { - close(dev->intr_handle.fd); - dev->intr_handle.fd = -1; - dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; - } -} - -int -pci_uio_alloc_resource(struct rte_pci_device *dev, - struct mapped_pci_resource **uio_res) -{ - char devname[PATH_MAX]; /* contains the /dev/uioX */ - struct rte_pci_addr *loc; - - loc = &dev->addr; - - snprintf(devname, sizeof(devname), "/dev/uio@pci:%u:%u:%u", - dev->addr.bus, dev->addr.devid, dev->addr.function); - - if (access(devname, O_RDWR) < 0) { - RTE_LOG(WARNING, EAL, " "PCI_PRI_FMT" not managed by UIO driver, " - "skipping\n", loc->domain, loc->bus, loc->devid, loc->function); - return 1; - } - - /* save fd if in primary process */ - dev->intr_handle.fd = open(devname, O_RDWR); - if (dev->intr_handle.fd < 0) { - RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", - devname, strerror(errno)); - goto error; - } - dev->intr_handle.type = RTE_INTR_HANDLE_UIO; - - /* allocate the mapping details for secondary processes*/ - *uio_res = rte_zmalloc("UIO_RES", sizeof(**uio_res), 0); - if (*uio_res == NULL) { - RTE_LOG(ERR, EAL, - "%s(): cannot store uio mmap details\n", __func__); - goto error; - } - - snprintf((*uio_res)->path, sizeof((*uio_res)->path), "%s", devname); - memcpy(&(*uio_res)->pci_addr, &dev->addr, sizeof((*uio_res)->pci_addr)); - - return 0; - -error: - pci_uio_free_resource(dev, *uio_res); - return -1; -} - -int -pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx, - struct mapped_pci_resource *uio_res, int map_idx) -{ - int fd; - char *devname; - void *mapaddr; - uint64_t offset; - uint64_t pagesz; - struct pci_map *maps; - - maps = uio_res->maps; - devname = uio_res->path; - pagesz = sysconf(_SC_PAGESIZE); - - /* allocate memory to keep path */ - maps[map_idx].path = rte_malloc(NULL, strlen(devname) + 1, 0); - if (maps[map_idx].path == NULL) { - RTE_LOG(ERR, EAL, "Cannot allocate memory for path: %s\n", - strerror(errno)); - return -1; - } - - /* - * open resource file, to mmap it - */ - fd = open(devname, O_RDWR); - if (fd < 0) { - RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", - devname, strerror(errno)); - goto error; - } - - /* if matching map is found, then use it */ - offset = res_idx * pagesz; - mapaddr = pci_map_resource(NULL, fd, (off_t)offset, - (size_t)dev->mem_resource[res_idx].len, 0); - close(fd); - if (mapaddr == MAP_FAILED) - goto error; - - maps[map_idx].phaddr = dev->mem_resource[res_idx].phys_addr; - maps[map_idx].size = dev->mem_resource[res_idx].len; - maps[map_idx].addr = mapaddr; - maps[map_idx].offset = offset; - strcpy(maps[map_idx].path, devname); - dev->mem_resource[res_idx].addr = mapaddr; - - return 0; - -error: - rte_free(maps[map_idx].path); - return -1; -} - -static int -pci_scan_one(int dev_pci_fd, struct pci_conf *conf) -{ - struct rte_pci_device *dev; - struct pci_bar_io bar; - unsigned i, max; - - dev = malloc(sizeof(*dev)); - if (dev == NULL) { - return -1; - } - - memset(dev, 0, sizeof(*dev)); - dev->addr.domain = conf->pc_sel.pc_domain; - dev->addr.bus = conf->pc_sel.pc_bus; - dev->addr.devid = conf->pc_sel.pc_dev; - dev->addr.function = conf->pc_sel.pc_func; - - /* get vendor id */ - dev->id.vendor_id = conf->pc_vendor; - - /* get device id */ - dev->id.device_id = conf->pc_device; - - /* get subsystem_vendor id */ - dev->id.subsystem_vendor_id = conf->pc_subvendor; - - /* get subsystem_device id */ - dev->id.subsystem_device_id = conf->pc_subdevice; - - /* get class id */ - dev->id.class_id = (conf->pc_class << 16) | - (conf->pc_subclass << 8) | - (conf->pc_progif); - - /* TODO: get max_vfs */ - dev->max_vfs = 0; - - /* FreeBSD has no NUMA support (yet) */ - dev->device.numa_node = 0; - - pci_name_set(dev); - - /* FreeBSD has only one pass through driver */ - dev->kdrv = RTE_KDRV_NIC_UIO; - - /* parse resources */ - switch (conf->pc_hdr & PCIM_HDRTYPE) { - case PCIM_HDRTYPE_NORMAL: - max = PCIR_MAX_BAR_0; - break; - case PCIM_HDRTYPE_BRIDGE: - max = PCIR_MAX_BAR_1; - break; - case PCIM_HDRTYPE_CARDBUS: - max = PCIR_MAX_BAR_2; - break; - default: - goto skipdev; - } - - for (i = 0; i <= max; i++) { - bar.pbi_sel = conf->pc_sel; - bar.pbi_reg = PCIR_BAR(i); - if (ioctl(dev_pci_fd, PCIOCGETBAR, &bar) < 0) - continue; - - dev->mem_resource[i].len = bar.pbi_length; - if (PCI_BAR_IO(bar.pbi_base)) { - dev->mem_resource[i].addr = (void *)(bar.pbi_base & ~((uint64_t)0xf)); - continue; - } - dev->mem_resource[i].phys_addr = bar.pbi_base & ~((uint64_t)0xf); - } - - /* device is valid, add in list (sorted) */ - if (TAILQ_EMPTY(&rte_pci_bus.device_list)) { - rte_pci_add_device(dev); - } - else { - struct rte_pci_device *dev2 = NULL; - int ret; - - TAILQ_FOREACH(dev2, &rte_pci_bus.device_list, next) { - ret = rte_eal_compare_pci_addr(&dev->addr, &dev2->addr); - if (ret > 0) - continue; - else if (ret < 0) { - rte_pci_insert_device(dev2, dev); - } else { /* already registered */ - dev2->kdrv = dev->kdrv; - dev2->max_vfs = dev->max_vfs; - pci_name_set(dev2); - memmove(dev2->mem_resource, - dev->mem_resource, - sizeof(dev->mem_resource)); - free(dev); - } - return 0; - } - rte_pci_add_device(dev); - } - - return 0; - -skipdev: - free(dev); - return 0; -} - -/* - * Scan the content of the PCI bus, and add the devices in the devices - * list. Call pci_scan_one() for each pci entry found. - */ -int -rte_pci_scan(void) -{ - int fd; - unsigned dev_count = 0; - struct pci_conf matches[16]; - struct pci_conf_io conf_io = { - .pat_buf_len = 0, - .num_patterns = 0, - .patterns = NULL, - .match_buf_len = sizeof(matches), - .matches = &matches[0], - }; - - /* for debug purposes, PCI can be disabled */ - if (internal_config.no_pci) - return 0; - - fd = open("/dev/pci", O_RDONLY); - if (fd < 0) { - RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__); - goto error; - } - - do { - unsigned i; - if (ioctl(fd, PCIOCGETCONF, &conf_io) < 0) { - RTE_LOG(ERR, EAL, "%s(): error with ioctl on /dev/pci: %s\n", - __func__, strerror(errno)); - goto error; - } - - for (i = 0; i < conf_io.num_matches; i++) - if (pci_scan_one(fd, &matches[i]) < 0) - goto error; - - dev_count += conf_io.num_matches; - } while(conf_io.status == PCI_GETCONF_MORE_DEVS); - - close(fd); - - RTE_LOG(DEBUG, EAL, "PCI scan found %u devices\n", dev_count); - return 0; - -error: - if (fd >= 0) - close(fd); - return -1; -} - -int -pci_update_device(const struct rte_pci_addr *addr) -{ - int fd; - struct pci_conf matches[2]; - struct pci_match_conf match = { - .pc_sel = { - .pc_domain = addr->domain, - .pc_bus = addr->bus, - .pc_dev = addr->devid, - .pc_func = addr->function, - }, - }; - struct pci_conf_io conf_io = { - .pat_buf_len = 0, - .num_patterns = 1, - .patterns = &match, - .match_buf_len = sizeof(matches), - .matches = &matches[0], - }; - - fd = open("/dev/pci", O_RDONLY); - if (fd < 0) { - RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__); - goto error; - } - - if (ioctl(fd, PCIOCGETCONF, &conf_io) < 0) { - RTE_LOG(ERR, EAL, "%s(): error with ioctl on /dev/pci: %s\n", - __func__, strerror(errno)); - goto error; - } - - if (conf_io.num_matches != 1) - goto error; - - if (pci_scan_one(fd, &matches[0]) < 0) - goto error; - - close(fd); - - return 0; - -error: - if (fd >= 0) - close(fd); - return -1; -} - -/* Read PCI config space. */ -int rte_pci_read_config(const struct rte_pci_device *dev, - void *buf, size_t len, off_t offset) -{ - int fd = -1; - int size; - struct pci_io pi = { - .pi_sel = { - .pc_domain = dev->addr.domain, - .pc_bus = dev->addr.bus, - .pc_dev = dev->addr.devid, - .pc_func = dev->addr.function, - }, - .pi_reg = offset, - }; - - fd = open("/dev/pci", O_RDWR); - if (fd < 0) { - RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__); - goto error; - } - - while (len > 0) { - size = (len >= 4) ? 4 : ((len >= 2) ? 2 : 1); - pi.pi_width = size; - - if (ioctl(fd, PCIOCREAD, &pi) < 0) - goto error; - memcpy(buf, &pi.pi_data, size); - - buf = (char *)buf + size; - pi.pi_reg += size; - len -= size; - } - close(fd); - - return 0; - - error: - if (fd >= 0) - close(fd); - return -1; -} - -/* Write PCI config space. */ -int rte_pci_write_config(const struct rte_pci_device *dev, - const void *buf, size_t len, off_t offset) -{ - int fd = -1; - - struct pci_io pi = { - .pi_sel = { - .pc_domain = dev->addr.domain, - .pc_bus = dev->addr.bus, - .pc_dev = dev->addr.devid, - .pc_func = dev->addr.function, - }, - .pi_reg = offset, - .pi_data = *(const uint32_t *)buf, - .pi_width = len, - }; - - if (len == 3 || len > sizeof(pi.pi_data)) { - RTE_LOG(ERR, EAL, "%s(): invalid pci read length\n", __func__); - goto error; - } - - memcpy(&pi.pi_data, buf, len); - - fd = open("/dev/pci", O_RDWR); - if (fd < 0) { - RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__); - goto error; - } - - if (ioctl(fd, PCIOCWRITE, &pi) < 0) - goto error; - - close(fd); - return 0; - - error: - if (fd >= 0) - close(fd); - return -1; -} - -int -rte_pci_ioport_map(struct rte_pci_device *dev, int bar, - struct rte_pci_ioport *p) -{ - int ret; - - switch (dev->kdrv) { -#if defined(RTE_ARCH_X86) - case RTE_KDRV_NIC_UIO: - if ((uintptr_t) dev->mem_resource[bar].addr <= UINT16_MAX) { - p->base = (uintptr_t)dev->mem_resource[bar].addr; - ret = 0; - } else - ret = -1; - break; -#endif - default: - ret = -1; - break; - } - - if (!ret) - p->dev = dev; - - return ret; -} - -static void -pci_uio_ioport_read(struct rte_pci_ioport *p, - void *data, size_t len, off_t offset) -{ -#if defined(RTE_ARCH_X86) - uint8_t *d; - int size; - unsigned short reg = p->base + offset; - - for (d = data; len > 0; d += size, reg += size, len -= size) { - if (len >= 4) { - size = 4; - *(uint32_t *)d = inl(reg); - } else if (len >= 2) { - size = 2; - *(uint16_t *)d = inw(reg); - } else { - size = 1; - *d = inb(reg); - } - } -#else - RTE_SET_USED(p); - RTE_SET_USED(data); - RTE_SET_USED(len); - RTE_SET_USED(offset); -#endif -} - -void -rte_pci_ioport_read(struct rte_pci_ioport *p, - void *data, size_t len, off_t offset) -{ - switch (p->dev->kdrv) { - case RTE_KDRV_NIC_UIO: - pci_uio_ioport_read(p, data, len, offset); - break; - default: - break; - } -} - -static void -pci_uio_ioport_write(struct rte_pci_ioport *p, - const void *data, size_t len, off_t offset) -{ -#if defined(RTE_ARCH_X86) - const uint8_t *s; - int size; - unsigned short reg = p->base + offset; - - for (s = data; len > 0; s += size, reg += size, len -= size) { - if (len >= 4) { - size = 4; - outl(reg, *(const uint32_t *)s); - } else if (len >= 2) { - size = 2; - outw(reg, *(const uint16_t *)s); - } else { - size = 1; - outb(reg, *s); - } - } -#else - RTE_SET_USED(p); - RTE_SET_USED(data); - RTE_SET_USED(len); - RTE_SET_USED(offset); -#endif -} - -void -rte_pci_ioport_write(struct rte_pci_ioport *p, - const void *data, size_t len, off_t offset) -{ - switch (p->dev->kdrv) { - case RTE_KDRV_NIC_UIO: - pci_uio_ioport_write(p, data, len, offset); - break; - default: - break; - } -} - -int -rte_pci_ioport_unmap(struct rte_pci_ioport *p) -{ - int ret; - - switch (p->dev->kdrv) { -#if defined(RTE_ARCH_X86) - case RTE_KDRV_NIC_UIO: - ret = 0; - break; -#endif - default: - ret = -1; - break; - } - - return ret; -} |