#include <dirent.h>
#include <rte_log.h>
+#include <rte_bus.h>
#include <rte_pci.h>
#include <rte_eal_memconfig.h>
#include <rte_malloc.h>
* IGB_UIO driver (or doesn't initialize, if the device wasn't bound to it).
*/
-/* unbind kernel driver for this device */
-int
-pci_unbind_kernel_driver(struct rte_pci_device *dev)
-{
- int n;
- FILE *f;
- char filename[PATH_MAX];
- char buf[BUFSIZ];
- struct rte_pci_addr *loc = &dev->addr;
-
- /* open /sys/bus/pci/devices/AAAA:BB:CC.D/driver */
- snprintf(filename, sizeof(filename),
- SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/driver/unbind",
- loc->domain, loc->bus, loc->devid, loc->function);
-
- f = fopen(filename, "w");
- if (f == NULL) /* device was not bound */
- return 0;
-
- n = snprintf(buf, sizeof(buf), PCI_PRI_FMT "\n",
- loc->domain, loc->bus, loc->devid, loc->function);
- if ((n < 0) || (n >= (int)sizeof(buf))) {
- RTE_LOG(ERR, EAL, "%s(): snprintf failed\n", __func__);
- goto error;
- }
- if (fwrite(buf, n, 1, f) == 0) {
- RTE_LOG(ERR, EAL, "%s(): could not write to %s\n", __func__,
- filename);
- goto error;
- }
-
- fclose(f);
- return 0;
-
-error:
- fclose(f);
- return -1;
-}
+extern struct rte_pci_bus rte_pci_bus;
static int
pci_get_kernel_driver_by_path(const char *filename, char *dri_name)
/* Map pci device */
int
-rte_eal_pci_map_device(struct rte_pci_device *dev)
+rte_pci_map_device(struct rte_pci_device *dev)
{
int ret = -1;
break;
case RTE_KDRV_IGB_UIO:
case RTE_KDRV_UIO_GENERIC:
- /* map resources for devices that use uio */
- ret = pci_uio_map_resource(dev);
+ if (rte_eal_using_phys_addrs()) {
+ /* map resources for devices that use uio */
+ ret = pci_uio_map_resource(dev);
+ }
break;
default:
RTE_LOG(DEBUG, EAL,
/* Unmap pci device */
void
-rte_eal_pci_unmap_device(struct rte_pci_device *dev)
+rte_pci_unmap_device(struct rte_pci_device *dev)
{
/* try unmapping the NIC resources using VFIO if it exists */
switch (dev->kdrv) {
case RTE_KDRV_VFIO:
- RTE_LOG(ERR, EAL, "Hotplug doesn't support vfio yet\n");
+#ifdef VFIO_PRESENT
+ if (pci_vfio_is_enabled())
+ pci_vfio_unmap_resource(dev);
+#endif
break;
case RTE_KDRV_IGB_UIO:
case RTE_KDRV_UIO_GENERIC:
return RTE_PTR_ADD(last->addr, last->len);
}
-/* parse the "resource" sysfs file */
-static int
-pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
+/* parse one line of the "resource" sysfs file (note that the 'line'
+ * string is modified)
+ */
+int
+pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr,
+ uint64_t *end_addr, uint64_t *flags)
{
- FILE *f;
- char buf[BUFSIZ];
union pci_resource_info {
struct {
char *phys_addr;
};
char *ptrs[PCI_RESOURCE_FMT_NVAL];
} res_info;
+
+ if (rte_strsplit(line, len, res_info.ptrs, 3, ' ') != 3) {
+ RTE_LOG(ERR, EAL,
+ "%s(): bad resource format\n", __func__);
+ return -1;
+ }
+ errno = 0;
+ *phys_addr = strtoull(res_info.phys_addr, NULL, 16);
+ *end_addr = strtoull(res_info.end_addr, NULL, 16);
+ *flags = strtoull(res_info.flags, NULL, 16);
+ if (errno != 0) {
+ RTE_LOG(ERR, EAL,
+ "%s(): bad resource format\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* parse the "resource" sysfs file */
+static int
+pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
+{
+ FILE *f;
+ char buf[BUFSIZ];
int i;
uint64_t phys_addr, end_addr, flags;
"%s(): cannot read resource\n", __func__);
goto error;
}
-
- if (rte_strsplit(buf, sizeof(buf), res_info.ptrs, 3, ' ') != 3) {
- RTE_LOG(ERR, EAL,
- "%s(): bad resource format\n", __func__);
- goto error;
- }
- errno = 0;
- phys_addr = strtoull(res_info.phys_addr, NULL, 16);
- end_addr = strtoull(res_info.end_addr, NULL, 16);
- flags = strtoull(res_info.flags, NULL, 16);
- if (errno != 0) {
- RTE_LOG(ERR, EAL,
- "%s(): bad resource format\n", __func__);
+ if (pci_parse_one_sysfs_resource(buf, sizeof(buf), &phys_addr,
+ &end_addr, &flags) < 0)
goto error;
- }
if (flags & IORESOURCE_MEM) {
dev->mem_resource[i].phys_addr = phys_addr;
/* Scan one pci sysfs entry, and fill the devices list from it. */
static int
-pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
- uint8_t devid, uint8_t function)
+pci_scan_one(const char *dirname, const struct rte_pci_addr *addr)
{
char filename[PATH_MAX];
unsigned long tmp;
return -1;
memset(dev, 0, sizeof(*dev));
- dev->addr.domain = domain;
- dev->addr.bus = bus;
- dev->addr.devid = devid;
- dev->addr.function = function;
+ dev->addr = *addr;
/* get vendor id */
snprintf(filename, sizeof(filename), "%s/vendor", dirname);
}
dev->id.subsystem_device_id = (uint16_t)tmp;
+ /* get class_id */
+ snprintf(filename, sizeof(filename), "%s/class",
+ dirname);
+ if (eal_parse_sysfs_value(filename, &tmp) < 0) {
+ free(dev);
+ return -1;
+ }
+ /* the least 24 bits are valid: class, subclass, program interface */
+ dev->id.class_id = (uint32_t)tmp & RTE_CLASS_ANY_ID;
+
/* get max_vfs */
dev->max_vfs = 0;
snprintf(filename, sizeof(filename), "%s/max_vfs", dirname);
dirname);
if (access(filename, R_OK) != 0) {
/* if no NUMA support, set default to 0 */
- dev->numa_node = 0;
+ dev->device.numa_node = 0;
} else {
if (eal_parse_sysfs_value(filename, &tmp) < 0) {
free(dev);
return -1;
}
- dev->numa_node = tmp;
+ dev->device.numa_node = tmp;
}
+ rte_pci_device_name(addr, dev->name, sizeof(dev->name));
+ dev->device.name = dev->name;
+
/* parse resources */
snprintf(filename, sizeof(filename), "%s/resource", dirname);
if (pci_parse_sysfs_resource(filename, dev) < 0) {
dev->kdrv = RTE_KDRV_NONE;
/* device is valid, add in list (sorted) */
- if (TAILQ_EMPTY(&pci_device_list)) {
- TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
+ if (TAILQ_EMPTY(&rte_pci_bus.device_list)) {
+ rte_pci_add_device(dev);
} else {
struct rte_pci_device *dev2;
int ret;
- TAILQ_FOREACH(dev2, &pci_device_list, next) {
+ TAILQ_FOREACH(dev2, &rte_pci_bus.device_list, next) {
ret = rte_eal_compare_pci_addr(&dev->addr, &dev2->addr);
if (ret > 0)
continue;
if (ret < 0) {
- TAILQ_INSERT_BEFORE(dev2, dev, next);
+ rte_pci_insert_device(dev2, dev);
} else { /* already registered */
dev2->kdrv = dev->kdrv;
dev2->max_vfs = dev->max_vfs;
}
return 0;
}
- TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
+
+ rte_pci_add_device(dev);
}
return 0;
}
+int
+pci_update_device(const struct rte_pci_addr *addr)
+{
+ char filename[PATH_MAX];
+
+ snprintf(filename, sizeof(filename), "%s/" PCI_PRI_FMT,
+ pci_get_sysfs_path(), addr->domain, addr->bus, addr->devid,
+ addr->function);
+
+ return pci_scan_one(filename, addr);
+}
+
/*
* split up a pci address into its constituent parts.
*/
static int
-parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
- uint8_t *bus, uint8_t *devid, uint8_t *function)
+parse_pci_addr_format(const char *buf, int bufsize, struct rte_pci_addr *addr)
{
/* first split on ':' */
union splitaddr {
/* now convert to int values */
errno = 0;
- *domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
- *bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
- *devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
- *function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
+ addr->domain = (uint16_t)strtoul(splitaddr.domain, NULL, 16);
+ addr->bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
+ addr->devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
+ addr->function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
if (errno != 0)
goto error;
* list
*/
int
-rte_eal_pci_scan(void)
+rte_pci_scan(void)
{
struct dirent *e;
DIR *dir;
char dirname[PATH_MAX];
- uint16_t domain;
- uint8_t bus, devid, function;
+ struct rte_pci_addr addr;
- dir = opendir(SYSFS_PCI_DEVICES);
+ /* for debug purposes, PCI can be disabled */
+ if (internal_config.no_pci)
+ return 0;
+
+ dir = opendir(pci_get_sysfs_path());
if (dir == NULL) {
RTE_LOG(ERR, EAL, "%s(): opendir failed: %s\n",
__func__, strerror(errno));
if (e->d_name[0] == '.')
continue;
- if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &domain,
- &bus, &devid, &function) != 0)
+ if (parse_pci_addr_format(e->d_name, sizeof(e->d_name), &addr) != 0)
continue;
- snprintf(dirname, sizeof(dirname), "%s/%s", SYSFS_PCI_DEVICES,
- e->d_name);
- if (pci_scan_one(dirname, domain, bus, devid, function) < 0)
+ snprintf(dirname, sizeof(dirname), "%s/%s",
+ pci_get_sysfs_path(), e->d_name);
+
+ if (pci_scan_one(dirname, &addr) < 0)
goto error;
}
closedir(dir);
return -1;
}
-#ifdef RTE_PCI_CONFIG
-/*
- * It is deprecated, all its configurations have been moved into
- * each PMD respectively.
- */
-void
-pci_config_space_set(__rte_unused struct rte_pci_device *dev)
-{
- RTE_LOG(DEBUG, EAL, "Nothing here, as it is deprecated\n");
-}
-#endif
-
/* Read PCI config space. */
-int rte_eal_pci_read_config(const struct rte_pci_device *device,
- void *buf, size_t len, off_t offset)
+int rte_pci_read_config(const struct rte_pci_device *device,
+ void *buf, size_t len, off_t offset)
{
const struct rte_intr_handle *intr_handle = &device->intr_handle;
}
/* Write PCI config space. */
-int rte_eal_pci_write_config(const struct rte_pci_device *device,
- const void *buf, size_t len, off_t offset)
+int rte_pci_write_config(const struct rte_pci_device *device,
+ const void *buf, size_t len, off_t offset)
{
const struct rte_intr_handle *intr_handle = &device->intr_handle;
#if defined(RTE_ARCH_X86)
static int
pci_ioport_map(struct rte_pci_device *dev, int bar __rte_unused,
- struct rte_pci_ioport *p)
+ struct rte_pci_ioport *p)
{
uint16_t start, end;
FILE *fp;
#endif
int
-rte_eal_pci_ioport_map(struct rte_pci_device *dev, int bar,
- struct rte_pci_ioport *p)
+rte_pci_ioport_map(struct rte_pci_device *dev, int bar,
+ struct rte_pci_ioport *p)
{
int ret = -1;
break;
#endif
case RTE_KDRV_IGB_UIO:
+ ret = pci_uio_ioport_map(dev, bar, p);
+ break;
case RTE_KDRV_UIO_GENERIC:
+#if defined(RTE_ARCH_X86)
+ ret = pci_ioport_map(dev, bar, p);
+#else
ret = pci_uio_ioport_map(dev, bar, p);
+#endif
break;
case RTE_KDRV_NONE:
#if defined(RTE_ARCH_X86)
}
void
-rte_eal_pci_ioport_read(struct rte_pci_ioport *p,
- void *data, size_t len, off_t offset)
+rte_pci_ioport_read(struct rte_pci_ioport *p,
+ void *data, size_t len, off_t offset)
{
switch (p->dev->kdrv) {
#ifdef VFIO_PRESENT
break;
#endif
case RTE_KDRV_IGB_UIO:
+ pci_uio_ioport_read(p, data, len, offset);
+ break;
case RTE_KDRV_UIO_GENERIC:
pci_uio_ioport_read(p, data, len, offset);
break;
- default:
+ case RTE_KDRV_NONE:
#if defined(RTE_ARCH_X86)
- /* special case for x86 ... */
pci_uio_ioport_read(p, data, len, offset);
#endif
break;
+ default:
+ break;
}
}
void
-rte_eal_pci_ioport_write(struct rte_pci_ioport *p,
- const void *data, size_t len, off_t offset)
+rte_pci_ioport_write(struct rte_pci_ioport *p,
+ const void *data, size_t len, off_t offset)
{
switch (p->dev->kdrv) {
#ifdef VFIO_PRESENT
break;
#endif
case RTE_KDRV_IGB_UIO:
+ pci_uio_ioport_write(p, data, len, offset);
+ break;
case RTE_KDRV_UIO_GENERIC:
pci_uio_ioport_write(p, data, len, offset);
break;
- default:
+ case RTE_KDRV_NONE:
#if defined(RTE_ARCH_X86)
- /* special case for x86 ... */
pci_uio_ioport_write(p, data, len, offset);
#endif
break;
+ default:
+ break;
}
}
int
-rte_eal_pci_ioport_unmap(struct rte_pci_ioport *p)
+rte_pci_ioport_unmap(struct rte_pci_ioport *p)
{
int ret = -1;
break;
#endif
case RTE_KDRV_IGB_UIO:
+ ret = pci_uio_ioport_unmap(p);
+ break;
case RTE_KDRV_UIO_GENERIC:
+#if defined(RTE_ARCH_X86)
+ ret = 0;
+#else
ret = pci_uio_ioport_unmap(p);
+#endif
break;
- default:
+ case RTE_KDRV_NONE:
#if defined(RTE_ARCH_X86)
- /* special case for x86 ... nothing to do */
ret = 0;
#endif
break;
+ default:
+ break;
}
return ret;
}
-
-/* Init the PCI EAL subsystem */
-int
-rte_eal_pci_init(void)
-{
- TAILQ_INIT(&pci_driver_list);
- TAILQ_INIT(&pci_device_list);
-
- /* for debug purposes, PCI can be disabled */
- if (internal_config.no_pci)
- return 0;
-
- if (rte_eal_pci_scan() < 0) {
- RTE_LOG(ERR, EAL, "%s(): Cannot scan PCI bus\n", __func__);
- return -1;
- }
-#ifdef VFIO_PRESENT
- pci_vfio_enable();
-
- if (pci_vfio_is_enabled()) {
-
- /* if we are primary process, create a thread to communicate with
- * secondary processes. the thread will use a socket to wait for
- * requests from secondary process to send open file descriptors,
- * because VFIO does not allow multiple open descriptors on a group or
- * VFIO container.
- */
- if (internal_config.process_type == RTE_PROC_PRIMARY &&
- pci_vfio_mp_sync_setup() < 0)
- return -1;
- }
-#endif
- return 0;
-}
git.droids-corp.org / dpdk.git / blobdiff