New upstream version 18.08upstream/18.08

Change-Id: I32fdf5e5016556d9c0a6d88ddaf1fc468961790a
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 236 insertions, 0 deletions

diff --git a/drivers/crypto/ccp/ccp_pci.c b/drivers/crypto/ccp/ccp_pci.c
new file mode 100644
index 00000000..59152ca5
--- /dev/null
+++ b/drivers/crypto/ccp/ccp_pci.c
@@ -0,0 +1,236 @@
+/*   SPDX-License-Identifier: BSD-3-Clause
+ *   Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved.
+ */
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <rte_string_fns.h>
+
+#include "ccp_pci.h"
+
+static const char * const uio_module_names[] = {
+	"igb_uio",
+	"uio_pci_generic",
+};
+
+int
+ccp_check_pci_uio_module(void)
+{
+	FILE *fp;
+	int i;
+	char buf[BUFSIZ];
+
+	fp = fopen(PROC_MODULES, "r");
+	if (fp == NULL)
+		return -1;
+	i = 0;
+	while (uio_module_names[i] != NULL) {
+		while (fgets(buf, sizeof(buf), fp) != NULL) {
+			if (!strncmp(buf, uio_module_names[i],
+				     strlen(uio_module_names[i])))
+				return i;
+		}
+		i++;
+		rewind(fp);
+	}
+	printf("Insert igb_uio or uio_pci_generic kernel module(s)");
+	return -1;/* uio not inserted */
+}
+
+/*
+ * split up a pci address into its constituent parts.
+ */
+int
+ccp_parse_pci_addr_format(const char *buf, int bufsize, uint16_t *domain,
+			  uint8_t *bus, uint8_t *devid, uint8_t *function)
+{
+	/* first split on ':' */
+	union splitaddr {
+		struct {
+			char *domain;
+			char *bus;
+			char *devid;
+			char *function;
+		};
+		char *str[PCI_FMT_NVAL];
+		/* last element-separator is "." not ":" */
+	} splitaddr;
+
+	char *buf_copy = strndup(buf, bufsize);
+
+	if (buf_copy == NULL)
+		return -1;
+
+	if (rte_strsplit(buf_copy, bufsize, splitaddr.str, PCI_FMT_NVAL, ':')
+			!= PCI_FMT_NVAL - 1)
+		goto error;
+	/* final split is on '.' between devid and function */
+	splitaddr.function = strchr(splitaddr.devid, '.');
+	if (splitaddr.function == NULL)
+		goto error;
+	*splitaddr.function++ = '\0';
+
+	/* now convert to int values */
+	errno = 0;
+	*domain = (uint8_t)strtoul(splitaddr.domain, NULL, 16);
+	*bus = (uint8_t)strtoul(splitaddr.bus, NULL, 16);
+	*devid = (uint8_t)strtoul(splitaddr.devid, NULL, 16);
+	*function = (uint8_t)strtoul(splitaddr.function, NULL, 10);
+	if (errno != 0)
+		goto error;
+
+	free(buf_copy); /* free the copy made with strdup */
+	return 0;
+error:
+	free(buf_copy);
+	return -1;
+}
+
+int
+ccp_pci_parse_sysfs_value(const char *filename, unsigned long *val)
+{
+	FILE *f;
+	char buf[BUFSIZ];
+	char *end = NULL;
+
+	f = fopen(filename, "r");
+	if (f == NULL)
+		return -1;
+	if (fgets(buf, sizeof(buf), f) == NULL) {
+		fclose(f);
+		return -1;
+	}
+	*val = strtoul(buf, &end, 0);
+	if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
+		fclose(f);
+		return -1;
+	}
+	fclose(f);
+	return 0;
+}
+
+/** IO resource type: */
+#define IORESOURCE_IO         0x00000100
+#define IORESOURCE_MEM        0x00000200
+
+/* parse one line of the "resource" sysfs file (note that the 'line'
+ * string is modified)
+ */
+static int
+ccp_pci_parse_one_sysfs_resource(char *line, size_t len, uint64_t *phys_addr,
+				 uint64_t *end_addr, uint64_t *flags)
+{
+	union pci_resource_info {
+		struct {
+			char *phys_addr;
+			char *end_addr;
+			char *flags;
+		};
+		char *ptrs[PCI_RESOURCE_FMT_NVAL];
+	} res_info;
+
+	if (rte_strsplit(line, len, res_info.ptrs, 3, ' ') != 3)
+		return -1;
+	errno = 0;
+	*phys_addr = strtoull(res_info.phys_addr, NULL, 16);
+	*end_addr = strtoull(res_info.end_addr, NULL, 16);
+	*flags = strtoull(res_info.flags, NULL, 16);
+	if (errno != 0)
+		return -1;
+
+	return 0;
+}
+
+/* parse the "resource" sysfs file */
+int
+ccp_pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
+{
+	FILE *fp;
+	char buf[BUFSIZ];
+	int i;
+	uint64_t phys_addr, end_addr, flags;
+
+	fp = fopen(filename, "r");
+	if (fp == NULL)
+		return -1;
+
+	for (i = 0; i < PCI_MAX_RESOURCE; i++) {
+		if (fgets(buf, sizeof(buf), fp) == NULL)
+			goto error;
+		if (ccp_pci_parse_one_sysfs_resource(buf, sizeof(buf),
+				&phys_addr, &end_addr, &flags) < 0)
+			goto error;
+
+		if (flags & IORESOURCE_MEM) {
+			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;
+		}
+	}
+	fclose(fp);
+	return 0;
+
+error:
+	fclose(fp);
+	return -1;
+}
+
+int
+ccp_find_uio_devname(const char *dirname)
+{
+
+	DIR *dir;
+	struct dirent *e;
+	char dirname_uio[PATH_MAX];
+	unsigned int uio_num;
+	int ret = -1;
+
+	/* depending on kernel version, uio can be located in uio/uioX
+	 * or uio:uioX
+	 */
+	snprintf(dirname_uio, sizeof(dirname_uio), "%s/uio", dirname);
+	dir = opendir(dirname_uio);
+	if (dir == NULL) {
+	/* retry with the parent directory might be different kernel version*/
+		dir = opendir(dirname);
+		if (dir == NULL)
+			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)) {
+			ret = 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)) {
+			ret = uio_num;
+			break;
+		}
+	}
+	closedir(dir);
+	return ret;
+
+
+}