/*-
* BSD LICENSE
*
- * Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include <rte_malloc.h>
#include <rte_string_fns.h>
#include <rte_debug.h>
+#include <rte_devargs.h>
+#include "rte_pci_dev_ids.h"
#include "eal_filesystem.h"
#include "eal_private.h"
return -1;
}
-/* map the PCI resource of a PCI device in virtual memory */
-static int
-pci_uio_map_resource(struct rte_pci_device *dev)
+static int pci_mknod_uio_dev(const char *sysfs_uio_path, unsigned uio_num)
{
- int i, j;
+ FILE *f;
+ char filename[PATH_MAX];
+ int ret;
+ unsigned major, minor;
+ dev_t dev;
+
+ /* get the name of the sysfs file that contains the major and minor
+ * of the uio device and read its content */
+ rte_snprintf(filename, sizeof(filename), "%s/dev", sysfs_uio_path);
+
+ f = fopen(filename, "r");
+ if (f == NULL) {
+ RTE_LOG(ERR, EAL, "%s(): cannot open sysfs to get major:minor\n",
+ __func__);
+ return -1;
+ }
+
+ ret = fscanf(f, "%d:%d", &major, &minor);
+ if (ret != 2) {
+ RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs to get major:minor\n",
+ __func__);
+ fclose(f);
+ return -1;
+ }
+ fclose(f);
+
+ /* create the char device "mknod /dev/uioX c major minor" */
+ rte_snprintf(filename, sizeof(filename), "/dev/uio%u", uio_num);
+ dev = makedev(major, minor);
+ ret = mknod(filename, S_IFCHR | S_IRUSR | S_IWUSR, dev);
+ if (f == NULL) {
+ RTE_LOG(ERR, EAL, "%s(): mknod() failed %s\n",
+ __func__, strerror(errno));
+ return -1;
+ }
+
+ return ret;
+}
+
+/*
+ * Return the uioX char device used for a pci device. On success, return
+ * the UIO number and fill dstbuf string with the path of the device in
+ * sysfs. On error, return a negative value. In this case dstbuf is
+ * invalid.
+ */
+static int pci_get_uio_dev(struct rte_pci_device *dev, char *dstbuf,
+ unsigned int buflen)
+{
+ struct rte_pci_addr *loc = &dev->addr;
+ unsigned int uio_num;
struct dirent *e;
DIR *dir;
char dirname[PATH_MAX];
- char dirname2[PATH_MAX];
- char devname[PATH_MAX]; /* contains the /dev/uioX */
- void *mapaddr;
- unsigned uio_num;
- uint64_t phaddr;
- uint64_t offset;
- uint64_t pagesz;
- ssize_t nb_maps;
- struct rte_pci_addr *loc = &dev->addr;
- struct uio_resource *uio_res;
- struct uio_map *maps;
-
- dev->intr_handle.fd = -1;
-
- /* secondary processes - use already recorded details */
- if (rte_eal_process_type() != RTE_PROC_PRIMARY)
- return (pci_uio_map_secondary(dev));
/* depending on kernel version, uio can be located in uio/uioX
* or uio:uioX */
rte_snprintf(dirname, sizeof(dirname),
- "/sys/bus/pci/devices/" PCI_PRI_FMT "/uio",
+ SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/uio",
loc->domain, loc->bus, loc->devid, loc->function);
dir = opendir(dirname);
if (dir == NULL) {
/* retry with the parent directory */
rte_snprintf(dirname, sizeof(dirname),
- "/sys/bus/pci/devices/" PCI_PRI_FMT,
+ SYSFS_PCI_DEVICES "/" PCI_PRI_FMT,
loc->domain, loc->bus, loc->devid, loc->function);
dir = opendir(dirname);
/* first try uio%d */
errno = 0;
uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
- if (errno == 0 && endptr != e->d_name) {
- rte_snprintf(dirname2, sizeof(dirname2),
- "%s/uio%u", dirname, uio_num);
+ if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
+ rte_snprintf(dstbuf, buflen, "%s/uio%u", dirname, uio_num);
break;
}
/* then try uio:uio%d */
errno = 0;
uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10);
- if (errno == 0 && endptr != e->d_name) {
- rte_snprintf(dirname2, sizeof(dirname2),
- "%s/uio:uio%u", dirname, uio_num);
+ if (errno == 0 && endptr != (e->d_name + longprefix_len)) {
+ rte_snprintf(dstbuf, buflen, "%s/uio:uio%u", dirname, uio_num);
break;
}
}
closedir(dir);
/* No uio resource found */
- if (e == NULL) {
+ if (e == NULL)
+ return -1;
+
+ /* create uio device if we've been asked to */
+ if (internal_config.create_uio_dev && pci_mknod_uio_dev(dstbuf, uio_num) < 0)
+ RTE_LOG(WARNING, EAL, "Cannot create /dev/uio%u\n", uio_num);
+
+ return uio_num;
+}
+
+/* map the PCI resource of a PCI device in virtual memory */
+static int
+pci_uio_map_resource(struct rte_pci_device *dev)
+{
+ int i, j;
+ char dirname[PATH_MAX];
+ char filename[PATH_MAX];
+ char devname[PATH_MAX]; /* contains the /dev/uioX */
+ void *mapaddr;
+ int uio_num;
+ unsigned long start,size;
+ uint64_t phaddr;
+ uint64_t offset;
+ uint64_t pagesz;
+ ssize_t nb_maps;
+ struct rte_pci_addr *loc = &dev->addr;
+ struct uio_resource *uio_res;
+ struct uio_map *maps;
+
+ dev->intr_handle.fd = -1;
+
+ /* secondary processes - use already recorded details */
+ if ((rte_eal_process_type() != RTE_PROC_PRIMARY) &&
+ (dev->id.vendor_id != PCI_VENDOR_ID_QUMRANET))
+ return (pci_uio_map_secondary(dev));
+
+ /* find uio resource */
+ uio_num = pci_get_uio_dev(dev, dirname, sizeof(dirname));
+ if (uio_num < 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;
}
+ if(dev->id.vendor_id == PCI_VENDOR_ID_QUMRANET) {
+ /* get portio size */
+ rte_snprintf(filename, sizeof(filename),
+ "%s/portio/port0/size", dirname);
+ if (eal_parse_sysfs_value(filename, &size) < 0) {
+ RTE_LOG(ERR, EAL, "%s(): cannot parse size\n",
+ __func__);
+ return -1;
+ }
+
+ /* get portio start */
+ rte_snprintf(filename, sizeof(filename),
+ "%s/portio/port0/start", dirname);
+ if (eal_parse_sysfs_value(filename, &start) < 0) {
+ RTE_LOG(ERR, EAL, "%s(): cannot parse portio start\n",
+ __func__);
+ return -1;
+ }
+ dev->mem_resource[0].addr = (void *)(uintptr_t)start;
+ dev->mem_resource[0].len = (uint64_t)size;
+ RTE_LOG(DEBUG, EAL, "PCI Port IO found start=0x%lx with size=0x%lx\n", start, size);
+ /* rte_virtio_pmd does not need any other bar even if available */
+ return (0);
+ }
+
/* allocate the mapping details for secondary processes*/
if ((uio_res = rte_zmalloc("UIO_RES", sizeof (*uio_res), 0)) == NULL) {
RTE_LOG(ERR, EAL,
"%s(): cannot store uio mmap details\n", __func__);
return (-1);
}
-
+
rte_snprintf(devname, sizeof(devname), "/dev/uio%u", uio_num);
rte_snprintf(uio_res->path, sizeof(uio_res->path), "%s", devname);
memcpy(&uio_res->pci_addr, &dev->addr, sizeof(uio_res->pci_addr));
-
+
/* collect info about device mappings */
- if ((nb_maps = pci_uio_get_mappings(dirname2, uio_res->maps,
+ if ((nb_maps = pci_uio_get_mappings(dirname, uio_res->maps,
sizeof (uio_res->maps) / sizeof (uio_res->maps[0])))
< 0)
return (nb_maps);
}
/* device is valid, add in list (sorted) */
- if (TAILQ_EMPTY(&device_list)) {
- TAILQ_INSERT_TAIL(&device_list, dev, next);
+ if (TAILQ_EMPTY(&pci_device_list)) {
+ TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
}
else {
struct rte_pci_device *dev2 = NULL;
- TAILQ_FOREACH(dev2, &device_list, next) {
+ TAILQ_FOREACH(dev2, &pci_device_list, next) {
if (pci_addr_comparison(&dev->addr, &dev2->addr))
continue;
else {
return 0;
}
}
- TAILQ_INSERT_TAIL(&device_list, dev, next);
+ TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
}
return 0;
rte_eal_pci_probe_one_driver(struct rte_pci_driver *dr, struct rte_pci_device *dev)
{
struct rte_pci_id *id_table;
-#ifdef RTE_EAL_UNBIND_PORTS
- const char *module_name = NULL;
- int uio_status = -1;
-
- if (dr->drv_flags & RTE_PCI_DRV_NEED_IGB_UIO)
- module_name = IGB_UIO_NAME;
-#endif
for (id_table = dr->id_table ; id_table->vendor_id != 0; id_table++) {
dev->id.device_id, dr->name);
/* no initialization when blacklisted, return without error */
- if (dev->blacklisted) {
+ if (dev->devargs != NULL &&
+ dev->devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI) {
RTE_LOG(DEBUG, EAL, " Device is blacklisted, not initializing\n");
return 0;
}
#ifdef RTE_EAL_UNBIND_PORTS
- /* Unbind PCI devices if needed */
- if (module_name != NULL)
- if (pci_switch_module(dr, dev, uio_status, module_name) < 0)
+ if (dr->drv_flags & RTE_PCI_DRV_NEED_IGB_UIO) {
+ /* unbind driver and load uio resources for Intel NICs */
+ if (pci_switch_module(dr, dev, 1, IGB_UIO_NAME) < 0)
return -1;
+ } else if (dr->drv_flags & RTE_PCI_DRV_FORCE_UNBIND &&
+ rte_eal_process_type() == RTE_PROC_PRIMARY) {
+ /* unbind current driver */
+ if (pci_unbind_kernel_driver(dev) < 0)
+ return -1;
+ }
#else
- /* just map the NIC resources */
- if (pci_uio_map_resource(dev) < 0)
- return -1;
+ if (dr->drv_flags & RTE_PCI_DRV_NEED_IGB_UIO)
+ /* just map resources for Intel NICs */
+ if (pci_uio_map_resource(dev) < 0)
+ return -1;
#endif
- /* We always should have BAR0 mapped */
- if (rte_eal_process_type() == RTE_PROC_PRIMARY &&
- dev->mem_resource[0].addr == NULL) {
- RTE_LOG(ERR, EAL,
- "%s(): BAR0 is not mapped\n",
- __func__);
- return (-1);
- }
-
/* reference driver structure */
dev->driver = dr;
int
rte_eal_pci_init(void)
{
- TAILQ_INIT(&driver_list);
- TAILQ_INIT(&device_list);
+ TAILQ_INIT(&pci_driver_list);
+ TAILQ_INIT(&pci_device_list);
uio_res_list = RTE_TAILQ_RESERVE_BY_IDX(RTE_TAILQ_PCI, uio_res_list);
/* for debug purposes, PCI can be disabled */
git.droids-corp.org / dpdk.git / blobdiff