#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
+#include <inttypes.h>
#include <sys/stat.h>
#include <sys/mman.h>
+#include <sys/sysmacros.h>
#include <linux/pci_regs.h>
+#if defined(RTE_ARCH_X86)
+#include <sys/io.h>
+#endif
+
#include <rte_log.h>
#include <rte_pci.h>
#include <rte_eal_memconfig.h>
#define OFF_MAX ((uint64_t)(off_t)-1)
+int
+pci_uio_read_config(const struct rte_intr_handle *intr_handle,
+ void *buf, size_t len, off_t offset)
+{
+ return pread(intr_handle->uio_cfg_fd, buf, len, offset);
+}
+
+int
+pci_uio_write_config(const struct rte_intr_handle *intr_handle,
+ const void *buf, size_t len, off_t offset)
+{
+ return pwrite(intr_handle->uio_cfg_fd, buf, len, offset);
+}
+
static int
pci_uio_set_bus_master(int dev_fd)
{
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) {
+ if (ret != 0) {
RTE_LOG(ERR, EAL, "%s(): mknod() failed %s\n",
__func__, strerror(errno));
return -1;
*/
static int
pci_get_uio_dev(struct rte_pci_device *dev, char *dstbuf,
- unsigned int buflen)
+ unsigned int buflen, int create)
{
struct rte_pci_addr *loc = &dev->addr;
- unsigned int uio_num;
+ int uio_num = -1;
struct dirent *e;
DIR *dir;
char dirname[PATH_MAX];
* or uio:uioX */
snprintf(dirname, sizeof(dirname),
- SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/uio",
+ "%s/" PCI_PRI_FMT "/uio", pci_get_sysfs_path(),
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,
+ "%s/" PCI_PRI_FMT, pci_get_sysfs_path(),
loc->domain, loc->bus, loc->devid, loc->function);
dir = opendir(dirname);
return -1;
/* create uio device if we've been asked to */
- if (internal_config.create_uio_dev &&
+ if (rte_eal_create_uio_dev() && create &&
pci_mknod_uio_dev(dstbuf, uio_num) < 0)
RTE_LOG(WARNING, EAL, "Cannot create /dev/uio%u\n", uio_num);
close(dev->intr_handle.uio_cfg_fd);
dev->intr_handle.uio_cfg_fd = -1;
}
- if (dev->intr_handle.fd) {
+ if (dev->intr_handle.fd >= 0) {
close(dev->intr_handle.fd);
dev->intr_handle.fd = -1;
dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
loc = &dev->addr;
/* find uio resource */
- uio_num = pci_get_uio_dev(dev, dirname, sizeof(dirname));
+ uio_num = pci_get_uio_dev(dev, dirname, sizeof(dirname), 1);
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);
struct mapped_pci_resource *uio_res, int map_idx)
{
int fd;
- char devname[PATH_MAX]; /* contains the /dev/uioX */
+ char devname[PATH_MAX];
void *mapaddr;
struct rte_pci_addr *loc;
struct pci_map *maps;
/* update devname for mmap */
snprintf(devname, sizeof(devname),
- SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/resource%d",
+ "%s/" PCI_PRI_FMT "/resource%d",
+ pci_get_sysfs_path(),
loc->domain, loc->bus, loc->devid,
loc->function, res_idx);
rte_free(maps[map_idx].path);
return -1;
}
+
+#if defined(RTE_ARCH_X86)
+int
+pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
+ struct rte_pci_ioport *p)
+{
+ char dirname[PATH_MAX];
+ char filename[PATH_MAX];
+ int uio_num;
+ unsigned long start;
+
+ uio_num = pci_get_uio_dev(dev, dirname, sizeof(dirname), 0);
+ if (uio_num < 0)
+ return -1;
+
+ /* get portio start */
+ snprintf(filename, sizeof(filename),
+ "%s/portio/port%d/start", dirname, bar);
+ if (eal_parse_sysfs_value(filename, &start) < 0) {
+ RTE_LOG(ERR, EAL, "%s(): cannot parse portio start\n",
+ __func__);
+ return -1;
+ }
+ /* ensure we don't get anything funny here, read/write will cast to
+ * uin16_t */
+ if (start > UINT16_MAX)
+ return -1;
+
+ /* FIXME only for primary process ? */
+ if (dev->intr_handle.type == RTE_INTR_HANDLE_UNKNOWN) {
+
+ snprintf(filename, sizeof(filename), "/dev/uio%u", uio_num);
+ dev->intr_handle.fd = open(filename, O_RDWR);
+ if (dev->intr_handle.fd < 0) {
+ RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
+ filename, strerror(errno));
+ return -1;
+ }
+ dev->intr_handle.type = RTE_INTR_HANDLE_UIO;
+ }
+
+ RTE_LOG(DEBUG, EAL, "PCI Port IO found start=0x%lx\n", start);
+
+ p->base = start;
+ p->len = 0;
+ return 0;
+}
+#else
+int
+pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
+ struct rte_pci_ioport *p)
+{
+ FILE *f;
+ char buf[BUFSIZ];
+ char filename[PATH_MAX];
+ uint64_t phys_addr, end_addr, flags;
+ int fd, i;
+ void *addr;
+
+ /* open and read addresses of the corresponding resource in sysfs */
+ snprintf(filename, sizeof(filename), "%s/" PCI_PRI_FMT "/resource",
+ pci_get_sysfs_path(), dev->addr.domain, dev->addr.bus,
+ dev->addr.devid, dev->addr.function);
+ f = fopen(filename, "r");
+ if (f == NULL) {
+ RTE_LOG(ERR, EAL, "Cannot open sysfs resource: %s\n",
+ strerror(errno));
+ return -1;
+ }
+ for (i = 0; i < bar + 1; i++) {
+ if (fgets(buf, sizeof(buf), f) == NULL) {
+ RTE_LOG(ERR, EAL, "Cannot read sysfs resource\n");
+ goto error;
+ }
+ }
+ if (pci_parse_one_sysfs_resource(buf, sizeof(buf), &phys_addr,
+ &end_addr, &flags) < 0)
+ goto error;
+ if ((flags & IORESOURCE_IO) == 0) {
+ RTE_LOG(ERR, EAL, "BAR %d is not an IO resource\n", bar);
+ goto error;
+ }
+ snprintf(filename, sizeof(filename), "%s/" PCI_PRI_FMT "/resource%d",
+ pci_get_sysfs_path(), dev->addr.domain, dev->addr.bus,
+ dev->addr.devid, dev->addr.function, bar);
+
+ /* mmap the pci resource */
+ fd = open(filename, O_RDWR);
+ if (fd < 0) {
+ RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", filename,
+ strerror(errno));
+ goto error;
+ }
+ addr = mmap(NULL, end_addr + 1, PROT_READ | PROT_WRITE,
+ MAP_SHARED, fd, 0);
+ close(fd);
+ if (addr == MAP_FAILED) {
+ RTE_LOG(ERR, EAL, "Cannot mmap IO port resource: %s\n",
+ strerror(errno));
+ goto error;
+ }
+
+ /* strangely, the base address is mmap addr + phys_addr */
+ p->base = (uintptr_t)addr + phys_addr;
+ p->len = end_addr + 1;
+ RTE_LOG(DEBUG, EAL, "PCI Port IO found start=0x%"PRIx64"\n", p->base);
+ fclose(f);
+
+ return 0;
+
+error:
+ fclose(f);
+ return -1;
+}
+#endif
+
+void
+pci_uio_ioport_read(struct rte_pci_ioport *p,
+ void *data, size_t len, off_t offset)
+{
+ uint8_t *d;
+ int size;
+ uintptr_t reg = p->base + offset;
+
+ for (d = data; len > 0; d += size, reg += size, len -= size) {
+ if (len >= 4) {
+ size = 4;
+#if defined(RTE_ARCH_X86)
+ *(uint32_t *)d = inl(reg);
+#else
+ *(uint32_t *)d = *(volatile uint32_t *)reg;
+#endif
+ } else if (len >= 2) {
+ size = 2;
+#if defined(RTE_ARCH_X86)
+ *(uint16_t *)d = inw(reg);
+#else
+ *(uint16_t *)d = *(volatile uint16_t *)reg;
+#endif
+ } else {
+ size = 1;
+#if defined(RTE_ARCH_X86)
+ *d = inb(reg);
+#else
+ *d = *(volatile uint8_t *)reg;
+#endif
+ }
+ }
+}
+
+void
+pci_uio_ioport_write(struct rte_pci_ioport *p,
+ const void *data, size_t len, off_t offset)
+{
+ const uint8_t *s;
+ int size;
+ uintptr_t reg = p->base + offset;
+
+ for (s = data; len > 0; s += size, reg += size, len -= size) {
+ if (len >= 4) {
+ size = 4;
+#if defined(RTE_ARCH_X86)
+ outl_p(*(const uint32_t *)s, reg);
+#else
+ *(volatile uint32_t *)reg = *(const uint32_t *)s;
+#endif
+ } else if (len >= 2) {
+ size = 2;
+#if defined(RTE_ARCH_X86)
+ outw_p(*(const uint16_t *)s, reg);
+#else
+ *(volatile uint16_t *)reg = *(const uint16_t *)s;
+#endif
+ } else {
+ size = 1;
+#if defined(RTE_ARCH_X86)
+ outb_p(*s, reg);
+#else
+ *(volatile uint8_t *)reg = *s;
+#endif
+ }
+ }
+}
+
+int
+pci_uio_ioport_unmap(struct rte_pci_ioport *p)
+{
+#if defined(RTE_ARCH_X86)
+ RTE_SET_USED(p);
+ /* FIXME close intr fd ? */
+ return 0;
+#else
+ return munmap((void *)(uintptr_t)p->base, p->len);
+#endif
+}
git.droids-corp.org / dpdk.git / blobdiff