diff options
Diffstat (limited to 'lib/sg_pt_common.c')
| -rw-r--r-- | lib/sg_pt_common.c | 651 |
1 files changed, 651 insertions, 0 deletions
diff --git a/lib/sg_pt_common.c b/lib/sg_pt_common.c new file mode 100644 index 00000000..9af5020a --- /dev/null +++ b/lib/sg_pt_common.c @@ -0,0 +1,651 @@ +/* + * Copyright (c) 2009-2022 Douglas Gilbert. + * All rights reserved. + * Use of this source code is governed by a BSD-style + * license that can be found in the BSD_LICENSE file. + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <stdbool.h> +#include <string.h> +#include <ctype.h> +#define __STDC_FORMAT_MACROS 1 +#include <inttypes.h> + + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "sg_lib.h" +#include "sg_pt.h" +#include "sg_unaligned.h" +#include "sg_pr2serr.h" +#include "sg_pr2serr.h" + +#if (HAVE_NVME && (! IGNORE_NVME)) +#include "sg_pt_nvme.h" +#endif + +static const char * scsi_pt_version_str = "3.19 20220127"; + +/* List of external functions that need to be defined for each OS are + * listed at the top of sg_pt_dummy.c */ + +const char * +scsi_pt_version() +{ + return scsi_pt_version_str; +} + +const char * +sg_pt_version() +{ + return scsi_pt_version_str; +} + + +#if (HAVE_NVME && (! IGNORE_NVME)) +/* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ */ + +#define SAVING_PARAMS_UNSUP 0x39 +#define INVALID_FIELD_IN_CDB 0x24 +#define INVALID_FIELD_IN_PARAM_LIST 0x26 +#define PARAMETER_LIST_LENGTH_ERR 0x1a + +static const char * nvme_scsi_vendor_str = "NVMe "; + + +#define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */ +#define F_SA_HIGH 0x100 /* as used by variable length cdbs */ +#define FF_SA (F_SA_HIGH | F_SA_LOW) +#define F_INV_OP 0x200 + +/* Table of SCSI operation code (opcodes) supported by SNTL */ +static struct sg_opcode_info_t sg_opcode_info_arr[] = +{ + {0x0, 0, 0, {6, /* TEST UNIT READY */ + 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, + {0x3, 0, 0, {6, /* REQUEST SENSE */ + 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, + {0x12, 0, 0, {6, /* INQUIRY */ + 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, + {0x1b, 0, 0, {6, /* START STOP UNIT */ + 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, + {0x1c, 0, 0, {6, /* RECEIVE DIAGNOSTIC RESULTS */ + 0x1, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, + {0x1d, 0, 0, {6, /* SEND DIAGNOSTIC */ + 0xf7, 0x0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, + {0x25, 0, 0, {10, /* READ CAPACITY(10) */ + 0x1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0, 0, 0} }, + {0x28, 0, 0, {10, /* READ(10) */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, + 0, 0} }, + {0x2a, 0, 0, {10, /* WRITE(10) */ + 0xfb, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, + 0, 0} }, + {0x2f, 0, 0, {10, /* VERIFY(10) */ + 0xf6, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, + 0, 0} }, + {0x35, 0, 0, {10, /* SYNCHRONIZE CACHE(10) */ + 0x7, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, + 0, 0} }, + {0x41, 0, 0, {10, /* WRITE SAME(10) */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, + 0, 0} }, + {0x55, 0, 0, {10, /* MODE SELECT(10) */ + 0x13, 0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, + {0x5a, 0, 0, {10, /* MODE SENSE(10) */ + 0x18, 0xff, 0xff, 0x0, 0x0, 0x0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, + {0x88, 0, 0, {16, /* READ(16) */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xc7} }, + {0x8a, 0, 0, {16, /* WRITE(16) */ + 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xc7} }, + {0x8f, 0, 0, {16, /* VERIFY(16) */ + 0xf6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x3f, 0xc7} }, + {0x91, 0, 0, {16, /* SYNCHRONIZE CACHE(16) */ + 0x7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x3f, 0xc7} }, + {0x93, 0, 0, {16, /* WRITE SAME(16) */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x3f, 0xc7} }, + {0x9e, 0x10, F_SA_LOW, {16, /* READ CAPACITY(16) [service action in] */ + 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x1, 0xc7} }, + {0xa0, 0, 0, {12, /* REPORT LUNS */ + 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, 0} }, + {0xa3, 0xc, F_SA_LOW, {12, /* REPORT SUPPORTED OPERATION CODES */ + 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, + 0} }, + {0xa3, 0xd, F_SA_LOW, {12, /* REPORT SUPPORTED TASK MAN. FUNCTIONS */ + 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, 0} }, + + {0xff, 0xffff, 0xffff, {0, /* Sentinel, keep as last element */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, +}; + +/* Returns pointer to array of struct sg_opcode_info_t of SCSI commands + * translated to NVMe. */ +const struct sg_opcode_info_t * +sg_get_opcode_translation(void) +{ + return sg_opcode_info_arr; +} + +/* Given the NVMe Identify controller response and optionally the NVMe + * Identify namespace response (NULL otherwise), generate the SCSI VPD + * page 0x83 (device identification) descriptor(s) in dop. Return the + * number of bytes written which will not exceed max_do_len. Probably use + * Peripheral Device Type (pdt) of 0 (disk) for don't know. Transport + * protocol (tproto) should be -1 if not known, else SCSI value. + * N.B. Does not write total VPD page length into dop[2:3] . */ +int +sg_make_vpd_devid_for_nvme(const uint8_t * nvme_id_ctl_p, + const uint8_t * nvme_id_ns_p, int pdt, + int tproto, uint8_t * dop, int max_do_len) +{ + bool have_nguid, have_eui64; + int k, n; + char b[4]; + + if ((NULL == nvme_id_ctl_p) || (NULL == dop) || (max_do_len < 56)) + return 0; + + memset(dop, 0, max_do_len); + dop[0] = 0x1f & pdt; /* (PQ=0)<<5 | (PDT=pdt); 0 or 0xd (SES) */ + dop[1] = 0x83; /* Device Identification VPD page number */ + /* Build a T10 Vendor ID based designator (desig_id=1) for controller */ + if (tproto >= 0) { + dop[4] = ((0xf & tproto) << 4) | 0x2; + dop[5] = 0xa1; /* PIV=1, ASSOC=2 (target device), desig_id=1 */ + } else { + dop[4] = 0x2; /* Prococol id=0, code_set=2 (ASCII) */ + dop[5] = 0x21; /* PIV=0, ASSOC=2 (target device), desig_id=1 */ + } + memcpy(dop + 8, nvme_scsi_vendor_str, 8); /* N.B. this is "NVMe " */ + memcpy(dop + 16, nvme_id_ctl_p + 24, 40); /* MN */ + for (k = 40; k > 0; --k) { + if (' ' == dop[15 + k]) + dop[15 + k] = '_'; /* convert trailing spaces */ + else + break; + } + if (40 == k) + --k; + n = 16 + 1 + k; + if (max_do_len < (n + 20)) + return 0; + memcpy(dop + n, nvme_id_ctl_p + 4, 20); /* SN */ + for (k = 20; k > 0; --k) { /* trim trailing spaces */ + if (' ' == dop[n + k - 1]) + dop[n + k - 1] = '\0'; + else + break; + } + n += k; + if (0 != (n % 4)) + n = ((n / 4) + 1) * 4; /* round up to next modulo 4 */ + dop[7] = n - 8; + if (NULL == nvme_id_ns_p) + return n; + + /* Look for NGUID (16 byte identifier) or EUI64 (8 byte) fields in + * NVME Identify for namespace. If found form a EUI and a SCSI string + * descriptor for non-zero NGUID or EUI64 (prefer NGUID if both). */ + have_nguid = ! sg_all_zeros(nvme_id_ns_p + 104, 16); + have_eui64 = ! sg_all_zeros(nvme_id_ns_p + 120, 8); + if ((! have_nguid) && (! have_eui64)) + return n; + if (have_nguid) { + if (max_do_len < (n + 20)) + return n; + dop[n + 0] = 0x1; /* Prococol id=0, code_set=1 (binary) */ + dop[n + 1] = 0x02; /* PIV=0, ASSOC=0 (lu), desig_id=2 (eui) */ + dop[n + 3] = 16; + memcpy(dop + n + 4, nvme_id_ns_p + 104, 16); + n += 20; + if (max_do_len < (n + 40)) + return n; + dop[n + 0] = 0x3; /* Prococol id=0, code_set=3 (utf8) */ + dop[n + 1] = 0x08; /* PIV=0, ASSOC=0 (lu), desig_id=8 (scsi string) */ + dop[n + 3] = 36; + memcpy(dop + n + 4, "eui.", 4); + for (k = 0; k < 16; ++k) { + snprintf(b, sizeof(b), "%02X", nvme_id_ns_p[104 + k]); + memcpy(dop + n + 8 + (2 * k), b, 2); + } + return n + 40; + } else { /* have_eui64 is true, 8 byte identifier */ + if (max_do_len < (n + 12)) + return n; + dop[n + 0] = 0x1; /* Prococol id=0, code_set=1 (binary) */ + dop[n + 1] = 0x02; /* PIV=0, ASSOC=0 (lu), desig_id=2 (eui) */ + dop[n + 3] = 8; + memcpy(dop + n + 4, nvme_id_ns_p + 120, 8); + n += 12; + if (max_do_len < (n + 24)) + return n; + dop[n + 0] = 0x3; /* Prococol id=0, code_set=3 (utf8) */ + dop[n + 1] = 0x08; /* PIV=0, ASSOC=0 (lu), desig_id=8 (scsi string) */ + dop[n + 3] = 20; + memcpy(dop + n + 4, "eui.", 4); + for (k = 0; k < 8; ++k) { + snprintf(b, sizeof(b), "%02X", nvme_id_ns_p[120 + k]); + memcpy(dop + n + 8 + (2 * k), b, 2); + } + return n + 24; + } +} + +/* Disconnect-Reconnect page for mode_sense */ +static int +resp_disconnect_pg(uint8_t * p, int pcontrol) +{ + uint8_t disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0}; + + memcpy(p, disconnect_pg, sizeof(disconnect_pg)); + if (1 == pcontrol) + memset(p + 2, 0, sizeof(disconnect_pg) - 2); + return sizeof(disconnect_pg); +} + +static uint8_t caching_m_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, + 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, + 0, 0, 0, 0}; + +/* Control mode page (SBC) for mode_sense */ +static int +resp_caching_m_pg(unsigned char *p, int pcontrol, bool wce) +{ /* Caching page for mode_sense */ + uint8_t ch_caching_m_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; + uint8_t d_caching_m_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, + 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; + + // if (SDEBUG_OPT_N_WCE & sdebug_opts) + caching_m_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ + if ((0 == pcontrol) || (3 == pcontrol)) { + if (wce) + caching_m_pg[2] |= 0x4; + else + caching_m_pg[2] &= ~0x4; + } + memcpy(p, caching_m_pg, sizeof(caching_m_pg)); + if (1 == pcontrol) { + if (wce) + ch_caching_m_pg[2] |= 0x4; + else + ch_caching_m_pg[2] &= ~0x4; + memcpy(p + 2, ch_caching_m_pg, sizeof(ch_caching_m_pg)); + } + else if (2 == pcontrol) { + if (wce) + d_caching_m_pg[2] |= 0x4; + else + d_caching_m_pg[2] &= ~0x4; + memcpy(p, d_caching_m_pg, sizeof(d_caching_m_pg)); + } + return sizeof(caching_m_pg); +} + +static uint8_t ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, + 0, 0, 0x2, 0x4b}; + +/* Control mode page for mode_sense */ +static int +resp_ctrl_m_pg(uint8_t *p, int pcontrol) +{ + uint8_t ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, + 0, 0, 0, 0}; + uint8_t d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, + 0, 0, 0x2, 0x4b}; + + memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); + if (1 == pcontrol) + memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); + else if (2 == pcontrol) + memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); + return sizeof(ctrl_m_pg); +} + +static uint8_t ctrl_ext_m_pg[] = {0x4a, 0x1, 0, 0x1c, 0, 0, 0x40, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, }; + +/* Control Extension mode page [0xa,0x1] for mode_sense */ +static int +resp_ctrl_ext_m_pg(uint8_t *p, int pcontrol) +{ + uint8_t ch_ctrl_ext_m_pg[] = {/* 0x4a, 0x1, 0, 0x1c, */ 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, }; + uint8_t d_ctrl_ext_m_pg[] = {0x4a, 0x1, 0, 0x1c, 0, 0, 0x40, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, }; + + memcpy(p, ctrl_ext_m_pg, sizeof(ctrl_ext_m_pg)); + if (1 == pcontrol) + memcpy(p + 4, ch_ctrl_ext_m_pg, sizeof(ch_ctrl_ext_m_pg)); + else if (2 == pcontrol) + memcpy(p, d_ctrl_ext_m_pg, sizeof(d_ctrl_ext_m_pg)); + return sizeof(ctrl_ext_m_pg); +} + +static uint8_t iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x0}; + +/* Informational Exceptions control mode page for mode_sense */ +static int +resp_iec_m_pg(uint8_t *p, int pcontrol) +{ + uint8_t ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, 0, 0, + 0x0, 0x0}; + uint8_t d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x0}; + + memcpy(p, iec_m_pg, sizeof(iec_m_pg)); + if (1 == pcontrol) + memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); + else if (2 == pcontrol) + memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); + return sizeof(iec_m_pg); +} + +static uint8_t vs_ua_m_pg[] = {0x0, 0xe, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0}; + +/* Vendor specific Unit Attention mode page for mode_sense */ +static int +resp_vs_ua_m_pg(uint8_t *p, int pcontrol) +{ + uint8_t ch_vs_ua_m_pg[] = {/* 0x0, 0xe, */ 0xff, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0}; + uint8_t d_vs_ua_m_pg[] = {0x0, 0xe, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0}; + + memcpy(p, vs_ua_m_pg, sizeof(vs_ua_m_pg)); + if (1 == pcontrol) + memcpy(p + 2, ch_vs_ua_m_pg, sizeof(ch_vs_ua_m_pg)); + else if (2 == pcontrol) + memcpy(p, d_vs_ua_m_pg, sizeof(d_vs_ua_m_pg)); + return sizeof(vs_ua_m_pg); +} + +void +sntl_init_dev_stat(struct sg_sntl_dev_state_t * dsp) +{ + if (dsp) { + dsp->scsi_dsense = !! (0x4 & ctrl_m_pg[2]); + dsp->enclosure_override = vs_ua_m_pg[2]; + } +} + + +#define SDEBUG_MAX_MSENSE_SZ 256 + +/* Only support MODE SENSE(10). Returns the number of bytes written to dip, + * or -1 if error info placed in resp. */ +int +sntl_resp_mode_sense10(const struct sg_sntl_dev_state_t * dsp, + const uint8_t * cdbp, uint8_t * dip, int mx_di_len, + struct sg_sntl_result_t * resp) +{ + bool dbd, llbaa, is_disk, bad_pcode; + int pcontrol, pcode, subpcode, bd_len, alloc_len, offset, len; + const uint32_t num_blocks = 0x100000; /* made up */ + const uint32_t lb_size = 512; /* guess */ + uint8_t dev_spec; + uint8_t * ap; + uint8_t arr[SDEBUG_MAX_MSENSE_SZ]; + + memset(resp, 0, sizeof(*resp)); + dbd = !! (cdbp[1] & 0x8); /* disable block descriptors */ + pcontrol = (cdbp[2] & 0xc0) >> 6; + pcode = cdbp[2] & 0x3f; + subpcode = cdbp[3]; + llbaa = !!(cdbp[1] & 0x10); + is_disk = sg_pdt_s_eq(sg_lib_pdt_decay(dsp->pdt), PDT_DISK_ZBC); + if (is_disk && !dbd) + bd_len = llbaa ? 16 : 8; + else + bd_len = 0; + alloc_len = sg_get_unaligned_be16(cdbp + 7); + memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); + if (0x3 == pcontrol) { /* Saving values not supported */ + resp->asc = SAVING_PARAMS_UNSUP; + goto err_out; + } + /* for disks set DPOFUA bit and clear write protect (WP) bit */ + if (is_disk) + dev_spec = 0x10; /* =0x90 if WP=1 implies read-only */ + else + dev_spec = 0x0; + arr[3] = dev_spec; + if (16 == bd_len) + arr[4] = 0x1; /* set LONGLBA bit */ + arr[7] = bd_len; /* assume 255 or less */ + offset = 8; + ap = arr + offset; + + if (8 == bd_len) { + sg_put_unaligned_be32(num_blocks, ap + 0); + sg_put_unaligned_be16((uint16_t)lb_size, ap + 6); + offset += bd_len; + ap = arr + offset; + } else if (16 == bd_len) { + sg_put_unaligned_be64(num_blocks, ap + 0); + sg_put_unaligned_be32(lb_size, ap + 12); + offset += bd_len; + ap = arr + offset; + } + bad_pcode = false; + + switch (pcode) { + case 0x2: /* Disconnect-Reconnect page, all devices */ + if (0x0 == subpcode) + len = resp_disconnect_pg(ap, pcontrol); + else { + len = 0; + bad_pcode = true; + } + offset += len; + break; + case 0x8: /* Caching Mode page, disk (like) devices */ + if (! is_disk) { + len = 0; + bad_pcode = true; + } else if (0x0 == subpcode) + len = resp_caching_m_pg(ap, pcontrol, dsp->wce); + else { + len = 0; + bad_pcode = true; + } + offset += len; + break; + case 0xa: /* Control Mode page, all devices */ + if (0x0 == subpcode) + len = resp_ctrl_m_pg(ap, pcontrol); + else if (0x1 == subpcode) + len = resp_ctrl_ext_m_pg(ap, pcontrol); + else { + len = 0; + bad_pcode = true; + } + offset += len; + break; + case 0x1c: /* Informational Exceptions Mode page, all devices */ + if (0x0 == subpcode) + len = resp_iec_m_pg(ap, pcontrol); + else { + len = 0; + bad_pcode = true; + } + offset += len; + break; + case 0x3f: /* Read all Mode pages */ + if ((0 == subpcode) || (0xff == subpcode)) { + len = 0; + len = resp_disconnect_pg(ap + len, pcontrol); + if (is_disk) + len += resp_caching_m_pg(ap + len, pcontrol, dsp->wce); + len += resp_ctrl_m_pg(ap + len, pcontrol); + if (0xff == subpcode) + len += resp_ctrl_ext_m_pg(ap + len, pcontrol); + len += resp_iec_m_pg(ap + len, pcontrol); + len += resp_vs_ua_m_pg(ap + len, pcontrol); + offset += len; + } else { + resp->asc = INVALID_FIELD_IN_CDB; + resp->in_byte = 3; + resp->in_bit = 255; + goto err_out; + } + break; + case 0x0: /* Vendor specific "Unit Attention" mode page */ + /* all sub-page codes ?? */ + len = resp_vs_ua_m_pg(ap, pcontrol); + offset += len; + break; /* vendor is "NVMe " (from INQUIRY field) */ + default: + bad_pcode = true; + break; + } + if (bad_pcode) { + resp->asc = INVALID_FIELD_IN_CDB; + resp->in_byte = 2; + resp->in_bit = 5; + goto err_out; + } + sg_put_unaligned_be16(offset - 2, arr + 0); + len = (alloc_len < offset) ? alloc_len : offset; + len = (len < mx_di_len) ? len : mx_di_len; + memcpy(dip, arr, len); + return len; + +err_out: + resp->sstatus = SAM_STAT_CHECK_CONDITION; + resp->sk = SPC_SK_ILLEGAL_REQUEST; + return -1; +} + +#define SDEBUG_MAX_MSELECT_SZ 512 + +/* Only support MODE SELECT(10). Returns number of bytes used from dop, + * else -1 on error with sense code placed in resp. */ +int +sntl_resp_mode_select10(struct sg_sntl_dev_state_t * dsp, + const uint8_t * cdbp, const uint8_t * dop, int do_len, + struct sg_sntl_result_t * resp) +{ + int pf, sp, ps, md_len, bd_len, off, spf, pg_len, rlen, param_len, mpage; + int sub_mpage; + uint8_t arr[SDEBUG_MAX_MSELECT_SZ]; + + memset(resp, 0, sizeof(*resp)); + memset(arr, 0, sizeof(arr)); + pf = cdbp[1] & 0x10; + sp = cdbp[1] & 0x1; + param_len = sg_get_unaligned_be16(cdbp + 7); + if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { + resp->asc = INVALID_FIELD_IN_CDB; + resp->in_byte = 1; + if (sp) + resp->in_bit = 0; + else if (0 == pf) + resp->in_bit = 4; + else { + resp->in_byte = 7; + resp->in_bit = 255; + } + goto err_out; + } + rlen = (do_len < param_len) ? do_len : param_len; + memcpy(arr, dop, rlen); + md_len = sg_get_unaligned_be16(arr + 0) + 2; + bd_len = sg_get_unaligned_be16(arr + 6); + if (md_len > 2) { + resp->asc = INVALID_FIELD_IN_PARAM_LIST; + resp->in_byte = 0; + resp->in_bit = 255; + goto err_out; + } + off = bd_len + 8; + mpage = arr[off] & 0x3f; + ps = !!(arr[off] & 0x80); + if (ps) { + resp->asc = INVALID_FIELD_IN_PARAM_LIST; + resp->in_byte = off; + resp->in_bit = 7; + goto err_out; + } + spf = !!(arr[off] & 0x40); + pg_len = spf ? (sg_get_unaligned_be16(arr + off + 2) + 4) : + (arr[off + 1] + 2); + sub_mpage = spf ? arr[off + 1] : 0; + if ((pg_len + off) > param_len) { + resp->asc = PARAMETER_LIST_LENGTH_ERR; + goto err_out; + } + switch (mpage) { + case 0x8: /* Caching Mode page */ + if (0x0 == sub_mpage) { + if (caching_m_pg[1] == arr[off + 1]) { + memcpy(caching_m_pg + 2, arr + off + 2, + sizeof(caching_m_pg) - 2); + dsp->wce = !!(caching_m_pg[2] & 0x4); + dsp->wce_changed = true; + break; + } + } + goto def_case; + case 0xa: /* Control Mode page */ + if (0x0 == sub_mpage) { + if (ctrl_m_pg[1] == arr[off + 1]) { + memcpy(ctrl_m_pg + 2, arr + off + 2, + sizeof(ctrl_m_pg) - 2); + dsp->scsi_dsense = !!(ctrl_m_pg[2] & 0x4); + break; + } + } + goto def_case; + case 0x1c: /* Informational Exceptions Mode page (SBC) */ + if (0x0 == sub_mpage) { + if (iec_m_pg[1] == arr[off + 1]) { + memcpy(iec_m_pg + 2, arr + off + 2, + sizeof(iec_m_pg) - 2); + break; + } + } + goto def_case; + case 0x0: /* Vendor specific "Unit Attention" mode page */ + if (vs_ua_m_pg[1] == arr[off + 1]) { + memcpy(vs_ua_m_pg + 2, arr + off + 2, + sizeof(vs_ua_m_pg) - 2); + dsp->enclosure_override = vs_ua_m_pg[2]; + } + break; + default: +def_case: + resp->asc = INVALID_FIELD_IN_PARAM_LIST; + resp->in_byte = off; + resp->in_bit = 5; + goto err_out; + } + return rlen; + +err_out: + resp->sk = SPC_SK_ILLEGAL_REQUEST; + resp->sstatus = SAM_STAT_CHECK_CONDITION; + return -1; +} + +#endif /* (HAVE_NVME && (! IGNORE_NVME)) [near line 140] */ |