/*-
* 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
* * 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
return -1;
}
-#ifdef RTE_EAL_UNBIND_PORTS
-#define PROC_MODULES "/proc/modules"
-
-#define IGB_UIO_NAME "igb_uio"
-
-#define UIO_DRV_PATH "/sys/bus/pci/drivers/%s"
-
-/* maximum time to wait that /dev/uioX appears */
-#define UIO_DEV_WAIT_TIMEOUT 3 /* seconds */
-
-/*
- * Check that a kernel module is loaded. Returns 0 on success, or if the
- * parameter is NULL, or -1 if the module is not loaded.
- */
-static int
-pci_uio_check_module(const char *module_name)
-{
- FILE *f;
- unsigned i;
- char buf[BUFSIZ];
-
- if (module_name == NULL)
- return 0;
-
- f = fopen(PROC_MODULES, "r");
- if (f == NULL) {
- RTE_LOG(ERR, EAL, "Cannot open "PROC_MODULES": %s\n",
- strerror(errno));
- return -1;
- }
-
- while(fgets(buf, sizeof(buf), f) != NULL) {
-
- for (i = 0; i < sizeof(buf) && buf[i] != '\0'; i++) {
- if (isspace(buf[i]))
- buf[i] = '\0';
- }
-
- if (strncmp(buf, module_name, sizeof(buf)) == 0) {
- fclose(f);
- return 0;
- }
- }
- fclose(f);
- return -1;
-}
-
-/* bind a PCI to the kernel module driver */
-static int
-pci_bind_device(struct rte_pci_device *dev, char dr_path[])
-{
- FILE *f;
- int n;
- char buf[BUFSIZ];
- char dev_bind[PATH_MAX];
- struct rte_pci_addr *loc = &dev->addr;
-
- n = rte_snprintf(dev_bind, sizeof(dev_bind), "%s/bind", dr_path);
- if ((n < 0) || (n >= (int)sizeof(buf))) {
- RTE_LOG(ERR, EAL, "Cannot rte_snprintf device bind path\n");
- return -1;
- }
-
- f = fopen(dev_bind, "w");
- if (f == NULL) {
- RTE_LOG(ERR, EAL, "Cannot open %s\n", dev_bind);
- return -1;
- }
- n = rte_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, "Cannot rte_snprintf PCI infos\n");
- fclose(f);
- return -1;
- }
- if (fwrite(buf, n, 1, f) == 0) {
- fclose(f);
- return -1;
- }
-
- fclose(f);
- return 0;
-}
-
-static int
-pci_uio_bind_device(struct rte_pci_device *dev, const char *module_name)
-{
- FILE *f;
- int n;
- char buf[BUFSIZ];
- char uio_newid[PATH_MAX];
- char uio_bind[PATH_MAX];
-
- n = rte_snprintf(uio_newid, sizeof(uio_newid), UIO_DRV_PATH "/new_id", module_name);
- if ((n < 0) || (n >= (int)sizeof(uio_newid))) {
- RTE_LOG(ERR, EAL, "Cannot rte_snprintf uio_newid name\n");
- return -1;
- }
-
- n = rte_snprintf(uio_bind, sizeof(uio_bind), UIO_DRV_PATH, module_name);
- if ((n < 0) || (n >= (int)sizeof(uio_bind))) {
- RTE_LOG(ERR, EAL, "Cannot rte_snprintf uio_bind name\n");
- return -1;
- }
-
- n = rte_snprintf(buf, sizeof(buf), "%x %x\n",
- dev->id.vendor_id, dev->id.device_id);
- if ((n < 0) || (n >= (int)sizeof(buf))) {
- RTE_LOG(ERR, EAL, "Cannot rte_snprintf vendor_id/device_id\n");
- return -1;
- }
-
- f = fopen(uio_newid, "w");
- if (f == NULL) {
- RTE_LOG(ERR, EAL, "Cannot open %s\n", uio_newid);
- return -1;
- }
- if (fwrite(buf, n, 1, f) == 0) {
- fclose(f);
- return -1;
- }
- fclose(f);
-
- pci_bind_device(dev, uio_bind);
- return 0;
-}
-
-static int
-pci_switch_module(struct rte_pci_driver *dr, struct rte_pci_device *dev,
- const char *module_name)
-{
- if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
- /* check that our driver is loaded */
- if (pci_uio_check_module(module_name) != 0)
- rte_exit(EXIT_FAILURE, "The %s module is required by the "
- "%s driver\n", module_name, dr->name);
-
- /* unbind current driver, bind ours */
- if (pci_unbind_kernel_driver(dev) < 0)
- return -1;
- if (pci_uio_bind_device(dev, module_name) < 0)
- return -1;
- }
-
- return 0;
-}
-
-#endif /* ifdef EAL_UNBIND_PORTS */
-
/* map a particular resource from a file */
static void *
pci_map_resource(void *requested_addr, const char *devname, off_t offset,
int fd;
void *mapaddr;
-#ifdef RTE_EAL_UNBIND_PORTS
- /*
- * open devname, and mmap it: it can take some time to
- * appear, so we wait some time before returning an error
- */
- unsigned n;
- for (n = 0; n < UIO_DEV_WAIT_TIMEOUT*10; n++) {
- errno = 0;
- if ((fd = open(devname, O_RDWR)) < 0 && errno != ENOENT)
- break;
- usleep(100000);
- }
-#else
/*
* open devname, to mmap it
*/
fd = open(devname, O_RDWR);
-#endif
if (fd < 0) {
RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
devname, strerror(errno));
uint64_t offset, size;
for (i = 0; i != nb_maps; i++) {
-
+
/* check if map directory exists */
- rte_snprintf(dirname, sizeof(dirname),
+ rte_snprintf(dirname, sizeof(dirname),
"%s/maps/map%u", devname, i);
-
+
if (access(dirname, F_OK) != 0)
break;
-
+
/* get mapping offset */
rte_snprintf(filename, sizeof(filename),
"%s/offset", dirname);
__func__, dirname);
return (-1);
}
-
+
/* get mapping size */
rte_snprintf(filename, sizeof(filename),
"%s/size", dirname);
__func__, dirname);
return (-1);
}
-
+
/* get mapping physical address */
rte_snprintf(filename, sizeof(filename),
"%s/addr", dirname);
if ((offset > OFF_MAX) || (size > SIZE_MAX)) {
RTE_LOG(ERR, EAL,
"%s(): offset/size exceed system max value\n",
- __func__);
+ __func__);
return (-1);
}
/* format could be uio%d ...*/
int shortprefix_len = sizeof("uio") - 1;
/* ... or uio:uio%d */
- int longprefix_len = sizeof("uio:uio") - 1;
+ int longprefix_len = sizeof("uio:uio") - 1;
char *endptr;
if (strncmp(e->d_name, "uio", 3) != 0)
for (i = 0; i<PCI_MAX_RESOURCE; i++) {
if (fgets(buf, sizeof(buf), f) == NULL) {
- RTE_LOG(ERR, EAL,
+ RTE_LOG(ERR, EAL,
"%s(): cannot read resource\n", __func__);
goto error;
}
if (rte_strsplit(buf, sizeof(buf), res_info.ptrs, 3, ' ') != 3) {
- RTE_LOG(ERR, EAL,
+ RTE_LOG(ERR, EAL,
"%s(): bad resource format\n", __func__);
goto error;
}
end_addr = strtoull(res_info.end_addr, NULL, 16);
flags = strtoull(res_info.flags, NULL, 16);
if (errno != 0) {
- RTE_LOG(ERR, EAL,
+ RTE_LOG(ERR, EAL,
"%s(): bad resource format\n", __func__);
goto error;
}
dev->mem_resource[i].phys_addr = phys_addr;
dev->mem_resource[i].len = end_addr - phys_addr + 1;
/* not mapped for now */
- dev->mem_resource[i].addr = NULL;
+ dev->mem_resource[i].addr = NULL;
}
}
fclose(f);
return -1;
}
-/*
- * parse a sysfs file containing one integer value
+/*
+ * parse a sysfs file containing one integer value
* different to the eal version, as it needs to work with 64-bit values
- */
-static int
-pci_parse_sysfs_value(const char *filename, uint64_t *val)
+ */
+static int
+pci_parse_sysfs_value(const char *filename, uint64_t *val)
{
FILE *f;
char buf[BUFSIZ];
char *end = NULL;
-
+
f = fopen(filename, "r");
if (f == NULL) {
RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
__func__, filename);
return -1;
}
-
+
if (fgets(buf, sizeof(buf), f) == NULL) {
RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
__func__, filename);
/* get max_vfs */
dev->max_vfs = 0;
rte_snprintf(filename, sizeof(filename), "%s/max_vfs", dirname);
- if (!access(filename, F_OK) &&
+ if (!access(filename, F_OK) &&
eal_parse_sysfs_value(filename, &tmp) == 0) {
dev->max_vfs = (uint16_t)tmp;
}
/* device is valid, add in list (sorted) */
if (TAILQ_EMPTY(&pci_device_list)) {
TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
- }
+ }
else {
struct rte_pci_device *dev2 = NULL;
}
TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
}
-
+
return 0;
}
return 0;
}
-#ifdef RTE_EAL_UNBIND_PORTS
- if (dr->drv_flags & RTE_PCI_DRV_NEED_IGB_UIO) {
- /* unbind current driver and bind on igb_uio */
- if (pci_switch_module(dr, dev, IGB_UIO_NAME) < 0)
- return -1;
- }
-#endif
-
if (dr->drv_flags & RTE_PCI_DRV_NEED_IGB_UIO) {
/* map resources for devices that use igb_uio */
if (pci_uio_map_resource(dev) < 0)
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