// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2010 FUJITSU LIMITED * Copyright (C) 2010 Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com> */ #include <linux/kernel.h> #include <linux/trace_seq.h> #include <asm/unaligned.h> #include <trace/events/scsi.h> #define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f) #define SERVICE_ACTION32(cdb) (get_unaligned_be16(&cdb[8])) static const char * scsi_trace_misc(struct trace_seq *, unsigned char *, int); static const char * scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p); u32 lba, txlen; lba = get_unaligned_be24(&cdb[1]) & 0x1fffff; /* * From SBC-2: a TRANSFER LENGTH field set to zero specifies that 256 * logical blocks shall be read (READ(6)) or written (WRITE(6)). */ txlen = cdb[4] ? cdb[4] : 256; trace_seq_printf(p, "lba=%u txlen=%u", lba, txlen); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p); u32 lba, txlen; lba = get_unaligned_be32(&cdb[2]); txlen = get_unaligned_be16(&cdb[7]); trace_seq_printf(p, "lba=%u txlen=%u protect=%u", lba, txlen, cdb[1] >> 5); if (cdb[0] == WRITE_SAME) trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p); u32 lba, txlen; lba = get_unaligned_be32(&cdb[2]); txlen = get_unaligned_be32(&cdb[6]); trace_seq_printf(p, "lba=%u txlen=%u protect=%u", lba, txlen, cdb[1] >> 5); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p); u64 lba; u32 txlen; lba = get_unaligned_be64(&cdb[2]); txlen = get_unaligned_be32(&cdb[10]); trace_seq_printf(p, "lba=%llu txlen=%u protect=%u", lba, txlen, cdb[1] >> 5); if (cdb[0] == WRITE_SAME_16) trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p), *cmd; u64 lba; u32 ei_lbrt, txlen; switch (SERVICE_ACTION32(cdb)) { case READ_32: cmd = "READ"; break; case VERIFY_32: cmd = "VERIFY"; break; case WRITE_32: cmd = "WRITE"; break; case WRITE_SAME_32: cmd = "WRITE_SAME"; break; default: trace_seq_puts(p, "UNKNOWN"); goto out; } lba = get_unaligned_be64(&cdb[12]); ei_lbrt = get_unaligned_be32(&cdb[20]); txlen = get_unaligned_be32(&cdb[28]); trace_seq_printf(p, "%s_32 lba=%llu txlen=%u protect=%u ei_lbrt=%u", cmd, lba, txlen, cdb[10] >> 5, ei_lbrt); if (SERVICE_ACTION32(cdb) == WRITE_SAME_32) trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p); unsigned int regions = get_unaligned_be16(&cdb[7]); trace_seq_printf(p, "regions=%u", (regions - 8) / 16); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p), *cmd; u64 lba; u32 alloc_len; switch (SERVICE_ACTION16(cdb)) { case SAI_READ_CAPACITY_16: cmd = "READ_CAPACITY_16"; break; case SAI_GET_LBA_STATUS: cmd = "GET_LBA_STATUS"; break; default: trace_seq_puts(p, "UNKNOWN"); goto out; } lba = get_unaligned_be64(&cdb[2]); alloc_len = get_unaligned_be32(&cdb[10]); trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd, lba, alloc_len); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_maintenance_in(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p), *cmd; u32 alloc_len; switch (SERVICE_ACTION16(cdb)) { case MI_REPORT_IDENTIFYING_INFORMATION: cmd = "REPORT_IDENTIFYING_INFORMATION"; break; case MI_REPORT_TARGET_PGS: cmd = "REPORT_TARGET_PORT_GROUPS"; break; case MI_REPORT_ALIASES: cmd = "REPORT_ALIASES"; break; case MI_REPORT_SUPPORTED_OPERATION_CODES: cmd = "REPORT_SUPPORTED_OPERATION_CODES"; break; case MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS: cmd = "REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS"; break; case MI_REPORT_PRIORITY: cmd = "REPORT_PRIORITY"; break; case MI_REPORT_TIMESTAMP: cmd = "REPORT_TIMESTAMP"; break; case MI_MANAGEMENT_PROTOCOL_IN: cmd = "MANAGEMENT_PROTOCOL_IN"; break; default: trace_seq_puts(p, "UNKNOWN"); goto out; } alloc_len = get_unaligned_be32(&cdb[6]); trace_seq_printf(p, "%s alloc_len=%u", cmd, alloc_len); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_maintenance_out(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p), *cmd; u32 alloc_len; switch (SERVICE_ACTION16(cdb)) { case MO_SET_IDENTIFYING_INFORMATION: cmd = "SET_IDENTIFYING_INFORMATION"; break; case MO_SET_TARGET_PGS: cmd = "SET_TARGET_PORT_GROUPS"; break; case MO_CHANGE_ALIASES: cmd = "CHANGE_ALIASES"; break; case MO_SET_PRIORITY: cmd = "SET_PRIORITY"; break; case MO_SET_TIMESTAMP: cmd = "SET_TIMESTAMP"; break; case MO_MANAGEMENT_PROTOCOL_OUT: cmd = "MANAGEMENT_PROTOCOL_OUT"; break; default: trace_seq_puts(p, "UNKNOWN"); goto out; } alloc_len = get_unaligned_be32(&cdb[6]); trace_seq_printf(p, "%s alloc_len=%u", cmd, alloc_len); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_zbc_in(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p), *cmd; u64 zone_id; u32 alloc_len; u8 options; switch (SERVICE_ACTION16(cdb)) { case ZI_REPORT_ZONES: cmd = "REPORT_ZONES"; break; default: trace_seq_puts(p, "UNKNOWN"); goto out; } zone_id = get_unaligned_be64(&cdb[2]); alloc_len = get_unaligned_be32(&cdb[10]); options = cdb[14] & 0x3f; trace_seq_printf(p, "%s zone=%llu alloc_len=%u options=%u partial=%u", cmd, (unsigned long long)zone_id, alloc_len, options, (cdb[14] >> 7) & 1); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_zbc_out(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p), *cmd; u64 zone_id; switch (SERVICE_ACTION16(cdb)) { case ZO_CLOSE_ZONE: cmd = "CLOSE_ZONE"; break; case ZO_FINISH_ZONE: cmd = "FINISH_ZONE"; break; case ZO_OPEN_ZONE: cmd = "OPEN_ZONE"; break; case ZO_RESET_WRITE_POINTER: cmd = "RESET_WRITE_POINTER"; break; default: trace_seq_puts(p, "UNKNOWN"); goto out; } zone_id = get_unaligned_be64(&cdb[2]); trace_seq_printf(p, "%s zone=%llu all=%u", cmd, (unsigned long long)zone_id, cdb[14] & 1); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len) { switch (SERVICE_ACTION32(cdb)) { case READ_32: case VERIFY_32: case WRITE_32: case WRITE_SAME_32: return scsi_trace_rw32(p, cdb, len); default: return scsi_trace_misc(p, cdb, len); } } static const char * scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = trace_seq_buffer_ptr(p); trace_seq_putc(p, '-'); trace_seq_putc(p, 0); return ret; } const char * scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len) { switch (cdb[0]) { case READ_6: case WRITE_6: return scsi_trace_rw6(p, cdb, len); case READ_10: case VERIFY: case WRITE_10: case WRITE_SAME: return scsi_trace_rw10(p, cdb, len); case READ_12: case VERIFY_12: case WRITE_12: return scsi_trace_rw12(p, cdb, len); case READ_16: case VERIFY_16: case WRITE_16: case WRITE_SAME_16: return scsi_trace_rw16(p, cdb, len); case UNMAP: return scsi_trace_unmap(p, cdb, len); case SERVICE_ACTION_IN_16: return scsi_trace_service_action_in(p, cdb, len); case VARIABLE_LENGTH_CMD: return scsi_trace_varlen(p, cdb, len); case MAINTENANCE_IN: return scsi_trace_maintenance_in(p, cdb, len); case MAINTENANCE_OUT: return scsi_trace_maintenance_out(p, cdb, len); case ZBC_IN: return scsi_trace_zbc_in(p, cdb, len); case ZBC_OUT: return scsi_trace_zbc_out(p, cdb, len); default: return scsi_trace_misc(p, cdb, len); } }