Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 186 insertions, 0 deletions

diff --git a/src/spdk/dpdk/lib/librte_pci/rte_pci.c b/src/spdk/dpdk/lib/librte_pci/rte_pci.c
new file mode 100644
index 000000000..9c80c4b71
--- /dev/null
+++ b/src/spdk/dpdk/lib/librte_pci/rte_pci.c
@@ -0,0 +1,186 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation.
+ * Copyright 2013-2014 6WIND S.A.
+ */
+
+#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_debug.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;
+
+	/* empty string is an error though strtoul() returns 0 */
+	if (*in == '\0')
+		return NULL;
+
+	/* PCI field starting with spaces is forbidden.
+	 * Negative wrap-around is not reported as an error by strtoul.
+	 */
+	if (*in == ' ' || *in == '-')
+		return NULL;
+
+	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;
+
+	/* PCI id starting with spaces is forbidden.
+	 * Negative wrap-around is not reported as an error by strtoul.
+	 */
+	if (*in == ' ' || *in == '-')
+		return -EINVAL;
+
+	errno = 0;
+	val = strtoul(in, &end, 16);
+	/* Empty string is not an error for strtoul, but the check
+	 *   end[0] != ':'
+	 * will detect the issue.
+	 */
+	if (errno != 0 || end[0] != ':' || val > UINT32_MAX)
+		return -EINVAL;
+	dev_addr->domain = (uint32_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;
+}
+
+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_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%zx, 0x%llx): %s (%p)\n",
+			__func__, fd, requested_addr, size,
+			(unsigned long 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, %#zx): %s\n",
+			__func__, requested_addr, size,
+			strerror(errno));
+	} else
+		RTE_LOG(DEBUG, EAL, "  PCI memory unmapped at %p\n",
+				requested_addr);
+}