#include <stdio.h>
#include <errno.h>
#include <unistd.h>
-#ifdef RTE_EXEC_ENV_LINUXAPP
-#include <dirent.h>
-#include <fcntl.h>
-#endif
#include <rte_ethdev.h>
#include <rte_memcpy.h>
hw->guest_features);
}
-#ifdef RTE_EXEC_ENV_LINUXAPP
-static int
-parse_sysfs_value(const char *filename, unsigned long *val)
-{
- FILE *f;
- char buf[BUFSIZ];
- char *end = NULL;
-
- f = fopen(filename, "r");
- if (f == NULL) {
- PMD_INIT_LOG(ERR, "%s(): cannot open sysfs value %s",
- __func__, filename);
- return -1;
- }
-
- if (fgets(buf, sizeof(buf), f) == NULL) {
- PMD_INIT_LOG(ERR, "%s(): cannot read sysfs value %s",
- __func__, filename);
- fclose(f);
- return -1;
- }
- *val = strtoul(buf, &end, 0);
- if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
- PMD_INIT_LOG(ERR, "%s(): cannot parse sysfs value %s",
- __func__, filename);
- fclose(f);
- return -1;
- }
- fclose(f);
- return 0;
-}
-
-static int get_uio_dev(struct rte_pci_addr *loc, char *buf, unsigned int buflen,
- unsigned int *uio_num)
-{
- struct dirent *e;
- DIR *dir;
- char dirname[PATH_MAX];
-
- /* depending on kernel version, uio can be located in uio/uioX
- * or uio:uioX */
- snprintf(dirname, sizeof(dirname),
- 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 */
- snprintf(dirname, sizeof(dirname),
- SYSFS_PCI_DEVICES "/" PCI_PRI_FMT,
- loc->domain, loc->bus, loc->devid, loc->function);
- dir = opendir(dirname);
-
- if (dir == NULL) {
- PMD_INIT_LOG(ERR, "Cannot opendir %s", dirname);
- return -1;
- }
- }
-
- /* take the first file starting with "uio" */
- while ((e = readdir(dir)) != NULL) {
- /* format could be uio%d ...*/
- int shortprefix_len = sizeof("uio") - 1;
- /* ... or uio:uio%d */
- int longprefix_len = sizeof("uio:uio") - 1;
- char *endptr;
-
- if (strncmp(e->d_name, "uio", 3) != 0)
- continue;
-
- /* first try uio%d */
- errno = 0;
- *uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
- if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
- snprintf(buf, 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 + longprefix_len)) {
- snprintf(buf, buflen, "%s/uio:uio%u", dirname,
- *uio_num);
- break;
- }
- }
- closedir(dir);
-
- /* No uio resource found */
- if (e == NULL) {
- PMD_INIT_LOG(ERR, "Could not find uio resource");
- return -1;
- }
-
- return 0;
-}
-
-static int
-virtio_has_msix(const struct rte_pci_addr *loc)
-{
- DIR *d;
- char dirname[PATH_MAX];
-
- snprintf(dirname, sizeof(dirname),
- SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/msi_irqs",
- loc->domain, loc->bus, loc->devid, loc->function);
-
- d = opendir(dirname);
- if (d)
- closedir(d);
-
- return (d != NULL);
-}
-
-/* Extract I/O port numbers from sysfs */
-static int virtio_resource_init_by_uio(struct rte_pci_device *pci_dev)
-{
- char dirname[PATH_MAX];
- char filename[PATH_MAX];
- unsigned long start, size;
- unsigned int uio_num;
-
- if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname), &uio_num) < 0)
- return -1;
-
- /* get portio size */
- snprintf(filename, sizeof(filename),
- "%s/portio/port0/size", dirname);
- if (parse_sysfs_value(filename, &size) < 0) {
- PMD_INIT_LOG(ERR, "%s(): cannot parse size",
- __func__);
- return -1;
- }
-
- /* get portio start */
- snprintf(filename, sizeof(filename),
- "%s/portio/port0/start", dirname);
- if (parse_sysfs_value(filename, &start) < 0) {
- PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
- __func__);
- return -1;
- }
- pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
- pci_dev->mem_resource[0].len = (uint64_t)size;
- PMD_INIT_LOG(DEBUG,
- "PCI Port IO found start=0x%lx with size=0x%lx",
- start, size);
-
- /* save fd */
- memset(dirname, 0, sizeof(dirname));
- snprintf(dirname, sizeof(dirname), "/dev/uio%u", uio_num);
- pci_dev->intr_handle.fd = open(dirname, O_RDWR);
- if (pci_dev->intr_handle.fd < 0) {
- PMD_INIT_LOG(ERR, "Cannot open %s: %s\n",
- dirname, strerror(errno));
- return -1;
- }
-
- pci_dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
- pci_dev->driver->drv_flags |= RTE_PCI_DRV_INTR_LSC;
-
- return 0;
-}
-
-/* Extract port I/O numbers from proc/ioports */
-static int virtio_resource_init_by_ioports(struct rte_pci_device *pci_dev)
-{
- uint16_t start, end;
- int size;
- FILE *fp;
- char *line = NULL;
- char pci_id[16];
- int found = 0;
- size_t linesz;
-
- snprintf(pci_id, sizeof(pci_id), PCI_PRI_FMT,
- pci_dev->addr.domain,
- pci_dev->addr.bus,
- pci_dev->addr.devid,
- pci_dev->addr.function);
-
- fp = fopen("/proc/ioports", "r");
- if (fp == NULL) {
- PMD_INIT_LOG(ERR, "%s(): can't open ioports", __func__);
- return -1;
- }
-
- while (getdelim(&line, &linesz, '\n', fp) > 0) {
- char *ptr = line;
- char *left;
- int n;
-
- n = strcspn(ptr, ":");
- ptr[n] = 0;
- left = &ptr[n+1];
-
- while (*left && isspace(*left))
- left++;
-
- if (!strncmp(left, pci_id, strlen(pci_id))) {
- found = 1;
-
- while (*ptr && isspace(*ptr))
- ptr++;
-
- sscanf(ptr, "%04hx-%04hx", &start, &end);
- size = end - start + 1;
-
- break;
- }
- }
-
- free(line);
- fclose(fp);
-
- if (!found)
- return -1;
-
- pci_dev->mem_resource[0].addr = (void *)(uintptr_t)(uint32_t)start;
- pci_dev->mem_resource[0].len = (uint64_t)size;
- PMD_INIT_LOG(DEBUG,
- "PCI Port IO found start=0x%x with size=0x%x",
- start, size);
-
- /* can't support lsc interrupt without uio */
- pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
-
- return 0;
-}
-
-/* Extract I/O port numbers from sysfs */
-static int virtio_resource_init(struct rte_pci_device *pci_dev)
-{
- if (virtio_resource_init_by_uio(pci_dev) == 0)
- return 0;
- else
- return virtio_resource_init_by_ioports(pci_dev);
-}
-
-#else
-static int
-virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
-{
- /* nic_uio does not enable interrupts, return 0 (false). */
- return 0;
-}
-
-static int virtio_resource_init(struct rte_pci_device *pci_dev __rte_unused)
-{
- /* no setup required */
- return 0;
-}
-#endif
-
/*
* Process Virtio Config changed interrupt and call the callback
* if link state changed.
pci_dev = eth_dev->pci_dev;
- vtpci_init(pci_dev, hw);
-
- if (virtio_resource_init(pci_dev) < 0)
+ if (vtpci_init(pci_dev, hw) < 0)
return -1;
- hw->use_msix = virtio_has_msix(&pci_dev->addr);
- hw->io_base = (uint32_t)(uintptr_t)pci_dev->mem_resource[0].addr;
-
/* Reset the device although not necessary at startup */
vtpci_reset(hw);
*/
#include <stdint.h>
+#ifdef RTE_EXEC_ENV_LINUXAPP
+ #include <dirent.h>
+ #include <fcntl.h>
+#endif
+
#include "virtio_pci.h"
#include "virtio_logs.h"
#include "virtqueue.h"
VIRTIO_WRITE_REG_2(hw, VIRTIO_PCI_QUEUE_NOTIFY, vq->vq_queue_index);
}
+#ifdef RTE_EXEC_ENV_LINUXAPP
+static int
+parse_sysfs_value(const char *filename, unsigned long *val)
+{
+ FILE *f;
+ char buf[BUFSIZ];
+ char *end = NULL;
+
+ f = fopen(filename, "r");
+ if (f == NULL) {
+ PMD_INIT_LOG(ERR, "%s(): cannot open sysfs value %s",
+ __func__, filename);
+ return -1;
+ }
+
+ if (fgets(buf, sizeof(buf), f) == NULL) {
+ PMD_INIT_LOG(ERR, "%s(): cannot read sysfs value %s",
+ __func__, filename);
+ fclose(f);
+ return -1;
+ }
+ *val = strtoul(buf, &end, 0);
+ if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
+ PMD_INIT_LOG(ERR, "%s(): cannot parse sysfs value %s",
+ __func__, filename);
+ fclose(f);
+ return -1;
+ }
+ fclose(f);
+ return 0;
+}
+
+static int
+get_uio_dev(struct rte_pci_addr *loc, char *buf, unsigned int buflen,
+ unsigned int *uio_num)
+{
+ struct dirent *e;
+ DIR *dir;
+ char dirname[PATH_MAX];
+
+ /*
+ * depending on kernel version, uio can be located in uio/uioX
+ * or uio:uioX
+ */
+ snprintf(dirname, sizeof(dirname),
+ 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 */
+ snprintf(dirname, sizeof(dirname),
+ SYSFS_PCI_DEVICES "/" PCI_PRI_FMT,
+ loc->domain, loc->bus, loc->devid, loc->function);
+ dir = opendir(dirname);
+
+ if (dir == NULL) {
+ PMD_INIT_LOG(ERR, "Cannot opendir %s", dirname);
+ return -1;
+ }
+ }
+
+ /* take the first file starting with "uio" */
+ while ((e = readdir(dir)) != NULL) {
+ /* format could be uio%d ...*/
+ int shortprefix_len = sizeof("uio") - 1;
+ /* ... or uio:uio%d */
+ int longprefix_len = sizeof("uio:uio") - 1;
+ char *endptr;
+
+ if (strncmp(e->d_name, "uio", 3) != 0)
+ continue;
+
+ /* first try uio%d */
+ errno = 0;
+ *uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
+ if (errno == 0 && endptr != (e->d_name + shortprefix_len)) {
+ snprintf(buf, 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 + longprefix_len)) {
+ snprintf(buf, buflen, "%s/uio:uio%u", dirname,
+ *uio_num);
+ break;
+ }
+ }
+ closedir(dir);
+
+ /* No uio resource found */
+ if (e == NULL) {
+ PMD_INIT_LOG(ERR, "Could not find uio resource");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+legacy_virtio_has_msix(const struct rte_pci_addr *loc)
+{
+ DIR *d;
+ char dirname[PATH_MAX];
+
+ snprintf(dirname, sizeof(dirname),
+ SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/msi_irqs",
+ loc->domain, loc->bus, loc->devid, loc->function);
+
+ d = opendir(dirname);
+ if (d)
+ closedir(d);
+
+ return (d != NULL);
+}
+
+/* Extract I/O port numbers from sysfs */
+static int
+virtio_resource_init_by_uio(struct rte_pci_device *pci_dev)
+{
+ char dirname[PATH_MAX];
+ char filename[PATH_MAX];
+ unsigned long start, size;
+ unsigned int uio_num;
+
+ if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname), &uio_num) < 0)
+ return -1;
+
+ /* get portio size */
+ snprintf(filename, sizeof(filename),
+ "%s/portio/port0/size", dirname);
+ if (parse_sysfs_value(filename, &size) < 0) {
+ PMD_INIT_LOG(ERR, "%s(): cannot parse size",
+ __func__);
+ return -1;
+ }
+
+ /* get portio start */
+ snprintf(filename, sizeof(filename),
+ "%s/portio/port0/start", dirname);
+ if (parse_sysfs_value(filename, &start) < 0) {
+ PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
+ __func__);
+ return -1;
+ }
+ pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
+ pci_dev->mem_resource[0].len = (uint64_t)size;
+ PMD_INIT_LOG(DEBUG,
+ "PCI Port IO found start=0x%lx with size=0x%lx",
+ start, size);
+
+ /* save fd */
+ memset(dirname, 0, sizeof(dirname));
+ snprintf(dirname, sizeof(dirname), "/dev/uio%u", uio_num);
+ pci_dev->intr_handle.fd = open(dirname, O_RDWR);
+ if (pci_dev->intr_handle.fd < 0) {
+ PMD_INIT_LOG(ERR, "Cannot open %s: %s\n",
+ dirname, strerror(errno));
+ return -1;
+ }
+
+ pci_dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
+ pci_dev->driver->drv_flags |= RTE_PCI_DRV_INTR_LSC;
+
+ return 0;
+}
+
+/* Extract port I/O numbers from proc/ioports */
+static int
+virtio_resource_init_by_ioports(struct rte_pci_device *pci_dev)
+{
+ uint16_t start, end;
+ int size;
+ FILE *fp;
+ char *line = NULL;
+ char pci_id[16];
+ int found = 0;
+ size_t linesz;
+
+ snprintf(pci_id, sizeof(pci_id), PCI_PRI_FMT,
+ pci_dev->addr.domain,
+ pci_dev->addr.bus,
+ pci_dev->addr.devid,
+ pci_dev->addr.function);
+
+ fp = fopen("/proc/ioports", "r");
+ if (fp == NULL) {
+ PMD_INIT_LOG(ERR, "%s(): can't open ioports", __func__);
+ return -1;
+ }
+
+ while (getdelim(&line, &linesz, '\n', fp) > 0) {
+ char *ptr = line;
+ char *left;
+ int n;
+
+ n = strcspn(ptr, ":");
+ ptr[n] = 0;
+ left = &ptr[n + 1];
+
+ while (*left && isspace(*left))
+ left++;
+
+ if (!strncmp(left, pci_id, strlen(pci_id))) {
+ found = 1;
+
+ while (*ptr && isspace(*ptr))
+ ptr++;
+
+ sscanf(ptr, "%04hx-%04hx", &start, &end);
+ size = end - start + 1;
+
+ break;
+ }
+ }
+
+ free(line);
+ fclose(fp);
+
+ if (!found)
+ return -1;
+
+ pci_dev->mem_resource[0].addr = (void *)(uintptr_t)(uint32_t)start;
+ pci_dev->mem_resource[0].len = (uint64_t)size;
+ PMD_INIT_LOG(DEBUG,
+ "PCI Port IO found start=0x%x with size=0x%x",
+ start, size);
+
+ /* can't support lsc interrupt without uio */
+ pci_dev->driver->drv_flags &= ~RTE_PCI_DRV_INTR_LSC;
+
+ return 0;
+}
+
+/* Extract I/O port numbers from sysfs */
+static int
+legacy_virtio_resource_init(struct rte_pci_device *pci_dev)
+{
+ if (virtio_resource_init_by_uio(pci_dev) == 0)
+ return 0;
+ else
+ return virtio_resource_init_by_ioports(pci_dev);
+}
+
+#else
+static int
+legayc_virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
+{
+ /* nic_uio does not enable interrupts, return 0 (false). */
+ return 0;
+}
+
+static int
+legacy_virtio_resource_init(struct rte_pci_device *pci_dev __rte_unused)
+{
+ /* no setup required */
+ return 0;
+}
+#endif
static const struct virtio_pci_ops legacy_ops = {
.read_dev_cfg = legacy_read_dev_config,
}
int
-vtpci_init(struct rte_pci_device *dev __rte_unused, struct virtio_hw *hw)
+vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw)
{
hw->vtpci_ops = &legacy_ops;
+ if (legacy_virtio_resource_init(dev) < 0)
+ return -1;
+ hw->use_msix = legacy_virtio_has_msix(&dev->addr);
+ hw->io_base = (uint32_t)(uintptr_t)dev->mem_resource[0].addr;
+
return 0;
}
git.droids-corp.org / dpdk.git / commitdiff