--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * Copyright 2013-2014 6WIND S.A.
+ * 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
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * 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
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/queue.h>
+#include <sys/mman.h>
+
+#include <rte_errno.h>
+#include <rte_interrupts.h>
+#include <rte_log.h>
+#include <rte_bus.h>
+#include <rte_per_lcore.h>
+#include <rte_memory.h>
+#include <rte_eal.h>
+#include <rte_string_fns.h>
+#include <rte_common.h>
+
+#include "rte_pci.h"
+
+static inline const char *
+get_u8_pciaddr_field(const char *in, void *_u8, char dlm)
+{
+ unsigned long val;
+ uint8_t *u8 = _u8;
+ char *end;
+
+ errno = 0;
+ val = strtoul(in, &end, 16);
+ if (errno != 0 || end[0] != dlm || val > UINT8_MAX) {
+ errno = errno ? errno : EINVAL;
+ return NULL;
+ }
+ *u8 = (uint8_t)val;
+ return end + 1;
+}
+
+static int
+pci_bdf_parse(const char *input, struct rte_pci_addr *dev_addr)
+{
+ const char *in = input;
+
+ dev_addr->domain = 0;
+ in = get_u8_pciaddr_field(in, &dev_addr->bus, ':');
+ if (in == NULL)
+ return -EINVAL;
+ in = get_u8_pciaddr_field(in, &dev_addr->devid, '.');
+ if (in == NULL)
+ return -EINVAL;
+ in = get_u8_pciaddr_field(in, &dev_addr->function, '\0');
+ if (in == NULL)
+ return -EINVAL;
+ return 0;
+}
+
+static int
+pci_dbdf_parse(const char *input, struct rte_pci_addr *dev_addr)
+{
+ const char *in = input;
+ unsigned long val;
+ char *end;
+
+ errno = 0;
+ val = strtoul(in, &end, 16);
+ if (errno != 0 || end[0] != ':' || val > UINT16_MAX)
+ return -EINVAL;
+ dev_addr->domain = (uint16_t)val;
+ in = end + 1;
+ in = get_u8_pciaddr_field(in, &dev_addr->bus, ':');
+ if (in == NULL)
+ return -EINVAL;
+ in = get_u8_pciaddr_field(in, &dev_addr->devid, '.');
+ if (in == NULL)
+ return -EINVAL;
+ in = get_u8_pciaddr_field(in, &dev_addr->function, '\0');
+ if (in == NULL)
+ return -EINVAL;
+ return 0;
+}
+
+int
+eal_parse_pci_BDF(const char *input, struct rte_pci_addr *dev_addr)
+{
+ return pci_bdf_parse(input, dev_addr);
+}
+
+int
+eal_parse_pci_DomBDF(const char *input, struct rte_pci_addr *dev_addr)
+{
+ return pci_dbdf_parse(input, dev_addr);
+}
+
+void
+rte_pci_device_name(const struct rte_pci_addr *addr,
+ char *output, size_t size)
+{
+ RTE_VERIFY(size >= PCI_PRI_STR_SIZE);
+ RTE_VERIFY(snprintf(output, size, PCI_PRI_FMT,
+ addr->domain, addr->bus,
+ addr->devid, addr->function) >= 0);
+}
+
+int
+rte_eal_compare_pci_addr(const struct rte_pci_addr *addr,
+ const struct rte_pci_addr *addr2)
+{
+ return rte_pci_addr_cmp(addr, addr2);
+}
+
+int
+rte_pci_addr_cmp(const struct rte_pci_addr *addr,
+ const struct rte_pci_addr *addr2)
+{
+ uint64_t dev_addr, dev_addr2;
+
+ if ((addr == NULL) || (addr2 == NULL))
+ return -1;
+
+ dev_addr = ((uint64_t)addr->domain << 24) |
+ (addr->bus << 16) | (addr->devid << 8) | addr->function;
+ dev_addr2 = ((uint64_t)addr2->domain << 24) |
+ (addr2->bus << 16) | (addr2->devid << 8) | addr2->function;
+
+ if (dev_addr > dev_addr2)
+ return 1;
+ else if (dev_addr < dev_addr2)
+ return -1;
+ else
+ return 0;
+}
+
+int
+rte_pci_addr_parse(const char *str, struct rte_pci_addr *addr)
+{
+ if (pci_bdf_parse(str, addr) == 0 ||
+ pci_dbdf_parse(str, addr) == 0)
+ return 0;
+ return -1;
+}
+
+
+/* map a particular resource from a file */
+void *
+pci_map_resource(void *requested_addr, int fd, off_t offset, size_t size,
+ int additional_flags)
+{
+ void *mapaddr;
+
+ /* Map the PCI memory resource of device */
+ mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
+ MAP_SHARED | additional_flags, fd, offset);
+ if (mapaddr == MAP_FAILED) {
+ RTE_LOG(ERR, EAL, "%s(): cannot mmap(%d, %p, 0x%lx, 0x%lx): %s (%p)\n",
+ __func__, fd, requested_addr,
+ (unsigned long)size, (unsigned long)offset,
+ strerror(errno), mapaddr);
+ } else
+ RTE_LOG(DEBUG, EAL, " PCI memory mapped at %p\n", mapaddr);
+
+ return mapaddr;
+}
+
+/* unmap a particular resource */
+void
+pci_unmap_resource(void *requested_addr, size_t size)
+{
+ if (requested_addr == NULL)
+ return;
+
+ /* Unmap the PCI memory resource of device */
+ if (munmap(requested_addr, size)) {
+ RTE_LOG(ERR, EAL, "%s(): cannot munmap(%p, 0x%lx): %s\n",
+ __func__, requested_addr, (unsigned long)size,
+ strerror(errno));
+ } else
+ RTE_LOG(DEBUG, EAL, " PCI memory unmapped at %p\n",
+ requested_addr);
+}
Code Review / deb_dpdk.git / blobdiff