Signed-off-by: Luben Tuikov <luben_tuikov@xxxxxxxxxxx>
diff -X linux-2.6.13/Documentation/dontdiff -Naur linux-2.6.13-orig/drivers/scsi/sas-class/expander_conf.c linux-2.6.13/drivers/scsi/sas-class/expander_conf.c
--- linux-2.6.13-orig/drivers/scsi/sas-class/expander_conf.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.13/drivers/scsi/sas-class/expander_conf.c 2005-09-09 11:14:29.000000000 -0400
@@ -0,0 +1,463 @@
+/*
+ * Serial Attached SCSI (SAS) Expander communication user space program
+ *
+ * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
+ * Copyright (C) 2005 Luben Tuikov <luben_tuikov@xxxxxxxxxxx>
+ *
+ * This file is licensed under GPLv2.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * $Id: //depot/sas-class/expander_conf.c#6 $
+ */
+
+/* This is a simple program to show how to communicate with
+ * expander devices in a SAS domain.
+ *
+ * The process is simple:
+ * 1. Build the SMP frame you want to send. The format and layout
+ * is described in the SAS spec. Leave the CRC field equal 0.
+ * 2. Open the expander's SMP portal sysfs file in RW mode.
+ * 3. Write the frame you built in 1.
+ * 4. Read the amount of data you expect to receive for the frame you built.
+ * If you receive different amount of data you expected to receive,
+ * then there was some kind of error.
+ * All this process is shown in detail in the function do_smp_func()
+ * and its callers, below.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <string.h>
+#include <errno.h>
+#include <endian.h>
+#include <byteswap.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#define LEFT_FIELD_SIZE 25
+
+#ifdef __LITTLE_ENDIAN
+#define be64_to_cpu(_x) __bswap_64(*(uint64_t *)(&(_x)))
+#define be32_to_cpu(_x) __bswap_32(*(uint32_t *)(&(_x)))
+#define be16_to_cpu(_x) __bswap_16(*(uint16_t *)(&(_x)))
+#define cpu_to_be64(_x) __bswap_64(*(uint64_t *)(&(_x)))
+#define cpu_to_be32(_x) __bswap_32(*(uint32_t *)(&(_x)))
+#define cpu_to_be16(_x) __bswap_16(*(uint16_t *)(&(_x)))
+#else
+#define be64_to_cpu(_x) (_x)
+#define be32_to_cpu(_x) (_x)
+#define be16_to_cpu(_x) (_x)
+#define cpu_to_be64(_x) (_x)
+#define cpu_to_be32(_x) (_x)
+#define cpu_to_be16(_x) (_x)
+#endif
+
+#define SAS_ADDR(_x) ((unsigned long long) be64_to_cpu(*(uint64_t *)(_x)))
+#define SAS_ADDR_SIZE 8
+
+const char *prog;
+
+struct route_table_entry {
+ int disabled;
+ uint8_t routed_sas_addr[SAS_ADDR_SIZE];
+};
+
+struct expander {
+ int num_phys;
+ uint8_t *phy_attr;
+ int route_indexes;
+};
+
+static int do_smp_func(char *smp_portal_name, void *smp_req, int smp_req_size,
+ void *smp_resp, int smp_resp_size)
+{
+ int fd;
+ ssize_t res;
+
+ fd = open(smp_portal_name, O_RDWR);
+ if (fd == -1) {
+ printf("%s: opening %s: %s(%d)\n", prog, smp_portal_name,
+ strerror(errno), errno);
+ return fd;
+ }
+
+ res = write(fd, smp_req, smp_req_size);
+ if (!res) {
+ printf("%s: nothing could be written to %s\n", prog,
+ smp_portal_name);
+ goto out_err;
+ } else if (res == -1) {
+ printf("%s: writing to %s: %s(%d)\n", prog, smp_portal_name,
+ strerror(errno), errno);
+ goto out_err;
+ }
+
+ res = read(fd, smp_resp, smp_resp_size);
+ if (!res) {
+ printf("%s: nothing could be read from %s\n", prog,
+ smp_portal_name);
+ goto out_err;
+ } else if (res == -1) {
+ printf("%s: reading from %s: %s(%d)\n", prog, smp_portal_name,
+ strerror(errno), errno);
+ goto out_err;
+ }
+ close(fd);
+ return res;
+ out_err:
+ close(fd);
+ return -1;
+}
+
+#define MI_REQ_SIZE 8
+#define MI_RESP_SIZE 64
+
+static unsigned char mi_req[MI_REQ_SIZE] = { 0x40, 1, 0, };
+static unsigned char mi_resp[MI_RESP_SIZE];
+
+#define MI_FIELD_SIZE 20
+#define MI_PRINTS(a, b) printf("%*s %*s\n",LEFT_FIELD_SIZE,a,MI_FIELD_SIZE,b)
+#define MI_PRINTD(a, b) printf("%*s %*u\n",LEFT_FIELD_SIZE,a,MI_FIELD_SIZE,b)
+#define MI_PRINTA(a, b) printf("%*s %0*llx\n",LEFT_FIELD_SIZE,a,MI_FIELD_SIZE,b)
+
+static int mi_expander(char *smp_portal_name, struct expander *ex)
+{
+ int res;
+
+ res = do_smp_func(smp_portal_name, mi_req, MI_REQ_SIZE,
+ mi_resp, MI_RESP_SIZE);
+ if (res == MI_RESP_SIZE && mi_resp[2] == 0) {
+ char buf[20];
+
+ memcpy(buf, mi_resp+12, 8);
+ buf[8] = 0;
+ MI_PRINTS("Vendor:", buf);
+
+ memcpy(buf, mi_resp+20, 16);
+ buf[16] = 0;
+ MI_PRINTS("Product:", buf);
+
+ memcpy(buf, mi_resp+36, 4);
+ buf[4] = 0;
+ MI_PRINTS("Revision:", buf);
+
+ if (!(mi_resp[8] & 1))
+ return 0;
+
+ memcpy(buf, mi_resp+40, 8);
+ buf[8] = 0;
+ MI_PRINTS("Component:", buf);
+
+ MI_PRINTD("Component ID:", be16_to_cpu(mi_resp[48]));
+ MI_PRINTD("Component revision:", mi_resp[50]);
+ }
+ return 0;
+}
+
+#define RG_REQ_SIZE 8
+#define RG_RESP_SIZE 32
+
+static unsigned char rg_req[RG_REQ_SIZE] = { 0x40, 0, };
+static unsigned char rg_resp[RG_RESP_SIZE];
+
+static int rg_expander(char *smp_portal_name, struct expander *ex)
+{
+ int res;
+
+ res = do_smp_func(smp_portal_name, rg_req, RG_REQ_SIZE, rg_resp,
+ RG_RESP_SIZE);
+
+ if (res == RG_RESP_SIZE && rg_resp[2] == 0) {
+ MI_PRINTD("Expander Change Count:", be16_to_cpu(rg_resp[4]));
+ MI_PRINTD("Expander Route Indexes:", be16_to_cpu(rg_resp[6]));
+ ex->route_indexes = be16_to_cpu(rg_resp[6]);
+ MI_PRINTD("Number of phys:", rg_resp[9]);
+ ex->num_phys = rg_resp[9];
+ MI_PRINTS("Configuring:", (rg_resp[10] & 2) ? "Yes" : "No");
+ MI_PRINTS("Configurable route table:",
+ (rg_resp[10] & 1) ? "Yes" : "No");
+ MI_PRINTA("Enclosure Logical Identifier:",
+ SAS_ADDR(rg_resp+12));
+ ex->phy_attr = malloc(ex->num_phys * sizeof(*ex->phy_attr));
+ }
+ return 0;
+}
+
+#define DISCOVER_REQ_SIZE 16
+#define DISCOVER_RESP_SIZE 56
+
+static unsigned char disc_req[DISCOVER_REQ_SIZE] = {0x40, 0x10, 0, };
+static unsigned char disc_resp[DISCOVER_RESP_SIZE];
+
+#define PHY_EEXIST 0x10
+#define PHY_VACANT 0x16
+
+static const char *attached_dev_type[8] = {
+ [0] = "none",
+ [1] = "end device",
+ [2] = "edge expander",
+ [3] = "fanout expander",
+ [4 ... 7] = "unknown",
+};
+
+static const char *phy_link_rate[16] = {
+ [0] = "unknown",
+ [1] = "disabled",
+ [2] = "phy reset problem",
+ [3] = "spinup hold",
+ [4] = "port selector",
+ [5 ... 7] = "unknown",
+ [8] = "G1 (1,5 Gb/s)",
+ [9] = "G2 (3 GB/s)",
+ [10 ... 15] = "Unknown",
+};
+
+static const char *proto_table[8] = {
+ "",
+ "SMP", "STP", "STP|SMP", "SSP",
+ "SSP|SMP", "SSP|STP", "SSP|STP|SMP",
+};
+
+#define DIRECT_ROUTING 0
+#define SUBTRACTIVE_ROUTING 1
+#define TABLE_ROUTING 2
+
+static const char *routing_attr[8] = {
+ [DIRECT_ROUTING] = "D",
+ [SUBTRACTIVE_ROUTING] = "S",
+ [TABLE_ROUTING] = "T",
+ [3 ... 7] = "x",
+};
+
+static const char *conn_type[0x80] = {
+ [0] = "No information",
+ [1] = "SAS external receptacle (i.e., SFF-8470)(see SAS-1.1)",
+ [2] = "SAS external compact receptacle (i.e., SFF-8088)(see SAS-1.1)",
+ [3 ... 0x0f ] = "External connector",
+ [0x10] = "SAS internal wide plug (i.e., SFF-8484)(see SAS-1.1)",
+ [0x11] = "SAS internal compact wide plug (i.e., SFF-8087)(see SAS-1.1)",
+ [0x12 ... 0x1f] = "Internal wide connector",
+ [0x20] = "SAS backplane receptacle (i.e., SFF-8482)(see SAS-1.1)",
+ [0x21] = "SATA-style host plug (i.e., ATA/ATAPI-7 V3)(see SAS-1.1)",
+ [0x22] = "SAS plug (i.e., SFF-8482)(see SAS-1.1)",
+ [0x23] = "SATA device plug (i.e., ATA/ATAPI-7 V3)(see SAS-1.1)",
+ [0x24 ... 0x2f] = "Internal connector to end device",
+ [0x30 ... 0x6f] = "Unknown\n",
+ [0x70 ... 0x7f] = "Vendor specific",
+};
+
+static int discover_phy(char *smp_portal_name, int phy_id, struct expander *ex)
+{
+ int res;
+ const char *dev_str;
+
+ disc_req[9] = phy_id;
+
+ res = do_smp_func(smp_portal_name, disc_req, DISCOVER_REQ_SIZE,
+ disc_resp, DISCOVER_RESP_SIZE);
+
+ if (res != DISCOVER_RESP_SIZE) {
+ printf("%s: error disovering phy %d\n", prog, phy_id);
+ goto out;
+ }
+ switch (disc_resp[2]) {
+ case PHY_VACANT:
+ printf("phy%02d: vacant\n", phy_id);
+ goto out; break;
+ case PHY_EEXIST:
+ printf("phy%02d doesn't exist\n", phy_id);
+ goto out; break;
+ case 0:
+ break;
+ default:
+ printf("phy%02d SMP function result: 0x%x\n",
+ phy_id, disc_resp[2]);
+ goto out;
+ }
+
+ printf("Phy%02d:%s attached: %016llx:%02d chg count:%02d\n",
+ phy_id, routing_attr[disc_resp[44] & 0x0F],
+ SAS_ADDR(disc_resp+24), disc_resp[32], disc_resp[42]);
+
+ if (ex->phy_attr)
+ ex->phy_attr[phy_id] = disc_resp[44] & 0x0F;
+
+ if (disc_resp[14] & 1)
+ dev_str = "SATA Host";
+ else if (disc_resp[15] & 0x80)
+ dev_str = "SATA Port Selector";
+ else if (disc_resp[15] & 1)
+ dev_str = "SATA device";
+ else
+ dev_str = attached_dev_type[(disc_resp[12] & 0x70) >> 4];
+ printf(" Attached device: %15s Link rate: %15s\n",
+ dev_str, phy_link_rate[disc_resp[13] & 0xf]);
+
+ printf(" Tproto: %15s Iproto: %15s\n",
+ proto_table[(disc_resp[15] & 0xe) >> 1],
+ proto_table[(disc_resp[14] & 0xe) >> 1]);
+
+ printf(" Programmed MIN-MAX linkrate: %s - %s\n",
+ phy_link_rate[(disc_resp[40] & 0xF0)>>4],
+ phy_link_rate[(disc_resp[41] & 0xF0)>>4]);
+
+ printf(" Hardware MIN-MAX linkrate: %s - %s\n",
+ phy_link_rate[(disc_resp[40] & 0x0F)],
+ phy_link_rate[(disc_resp[41] & 0x0F)]);
+
+ printf(" %s phy\n", (disc_resp[43] & 0x80) ? "Virtual" : "Physical");
+ printf(" Partial pathway timeout value: %d microseconds\n",
+ disc_resp[43] & 0x0F);
+
+ printf(" Connector type: %s\n", conn_type[disc_resp[45] & 0x7F]);
+ printf(" Connector element index: %d\n", disc_resp[46]);
+ printf(" Connector physical link: %d\n", disc_resp[47]);
+out:
+ return 0;
+}
+
+#define RPEL_REQ_SIZE 16
+#define RPEL_RESP_SIZE 32
+
+static unsigned char rpel_req[RPEL_REQ_SIZE] = { 0x40, 0x11, 0, };
+static unsigned char rpel_resp[RPEL_RESP_SIZE];
+
+static int report_phy_error_log(char *smp_portal_name, int phy_id)
+{
+ int res;
+
+ rpel_req[9] = phy_id;
+
+ res = do_smp_func(smp_portal_name, rpel_req, RPEL_REQ_SIZE,
+ rpel_resp, RPEL_RESP_SIZE);
+ if (res != RPEL_RESP_SIZE) {
+ printf("%s: error reading error log for phy %d (%d)\n",
+ prog, phy_id, res);
+ goto out;
+ }
+ MI_PRINTD(" Invalid DW count:", be32_to_cpu(rpel_resp[12]));
+ MI_PRINTD(" RD error count:", be32_to_cpu(rpel_resp[16]));
+ MI_PRINTD(" DW sync loss count:", be32_to_cpu(rpel_resp[20]));
+ MI_PRINTD(" Reset problem count:", be32_to_cpu(rpel_resp[24]));
+out:
+ return 0;
+}
+
+#define RRI_REQ_SIZE 16
+#define RRI_RESP_SIZE 44
+
+static unsigned char rri_req[RRI_REQ_SIZE] = { 0x40, 0x13, 0, };
+static unsigned char rri_resp[RRI_RESP_SIZE];
+
+static int show_routing_table(char *smp_portal_name, int phy_id,
+ struct expander *ex)
+{
+ struct route_table_entry *rt;
+ int res, i, last_non_zero = -1;
+
+ if (!ex->phy_attr || ex->phy_attr[phy_id] != TABLE_ROUTING)
+ return 0;
+
+ rt = malloc(sizeof(struct route_table_entry)*ex->route_indexes);
+ if (!rt)
+ return 0;
+
+ rri_req[9] = phy_id;
+
+ for (i = 0; i < ex->route_indexes; i++) {
+ *(uint16_t *)(rri_req+6) = cpu_to_be16(i);
+ res = do_smp_func(smp_portal_name, rri_req, RRI_REQ_SIZE,
+ rri_resp, RRI_RESP_SIZE);
+ if (res != RRI_RESP_SIZE) {
+ printf("Error getting phy %d route index %d (%d)\n",
+ phy_id, i, res);
+ goto out;
+ }
+ if (rri_resp[2] != 0)
+ break;
+ if (be16_to_cpu(rri_resp[6]) != i) {
+ printf("Expander FW error for phy %d index %d\n",
+ phy_id, i);
+ goto out;
+ }
+ rt[i].disabled = rri_resp[12] & 0x80 ? 1 : 0;
+ memcpy(rt[i].routed_sas_addr, rri_resp+16, SAS_ADDR_SIZE);
+ if (rt[i].routed_sas_addr[0])
+ last_non_zero = i;
+ }
+ printf(" Routing Table\n");
+ if (last_non_zero == -1)
+ printf(" Empty (all zero)\n");
+ else {
+ for (i = 0; i <= last_non_zero; i++)
+ printf(" %02d %8s %016llx\n",
+ i, rt[i].disabled ? "disabled" : "enabled",
+ SAS_ADDR(rt[i].routed_sas_addr));
+ }
+out:
+ free(rt);
+ return 0;
+}
+
+static int discover_expander(char *smp_portal_name, struct expander *ex)
+{
+ int i;
+
+ for (i = 0; i < ex->num_phys; i++) {
+ printf("\n");
+ discover_phy(smp_portal_name, i, ex);
+ report_phy_error_log(smp_portal_name, i);
+ show_routing_table(smp_portal_name, i, ex);
+ }
+
+ return 0;
+}
+
+static void print_info(void)
+{
+ printf("%s <smp portal file>\n", prog);
+ printf("\tWhere <smp portal file> is the binary attribute file of the"
+ "\n\texpander device in sysfs.\n");
+}
+
+int main(int argc, char *argv[])
+{
+ prog = strrchr(argv[0], '/');
+ if (prog)
+ prog++;
+ else
+ prog = argv[0];
+
+ if (argc < 2) {
+ print_info();
+ return 0;
+ } else {
+ struct expander ex;
+
+ memset(&ex, 0, sizeof(ex));
+
+ mi_expander(argv[1], &ex);
+ rg_expander(argv[1], &ex);
+ discover_expander(argv[1], &ex);
+ if (ex.phy_attr)
+ free(ex.phy_attr);
+ }
+ return 0;
+}
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