// SPDX-License-Identifier: GPL-2.0 #include <linux/seq_file.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_dbg.h> #include "scsi_debugfs.h" #define SCSI_CMD_FLAG_NAME(name) [ilog2(SCMD_##name)] = #name static const char *const scsi_cmd_flags[] = { SCSI_CMD_FLAG_NAME(TAGGED), SCSI_CMD_FLAG_NAME(UNCHECKED_ISA_DMA), SCSI_CMD_FLAG_NAME(INITIALIZED), }; #undef SCSI_CMD_FLAG_NAME static int scsi_flags_show(struct seq_file *m, const unsigned long flags, const char *const *flag_name, int flag_name_count) { bool sep = false; int i; for (i = 0; i < sizeof(flags) * BITS_PER_BYTE; i++) { if (!(flags & BIT(i))) continue; if (sep) seq_puts(m, "|"); sep = true; if (i < flag_name_count && flag_name[i]) seq_puts(m, flag_name[i]); else seq_printf(m, "%d", i); } return 0; } void scsi_show_rq(struct seq_file *m, struct request *rq) { struct scsi_cmnd *cmd = container_of(scsi_req(rq), typeof(*cmd), req); int alloc_ms = jiffies_to_msecs(jiffies - cmd->jiffies_at_alloc); int timeout_ms = jiffies_to_msecs(rq->timeout); const u8 *const cdb = READ_ONCE(cmd->cmnd); char buf[80] = "(?)"; if (cdb) __scsi_format_command(buf, sizeof(buf), cdb, cmd->cmd_len); seq_printf(m, ", .cmd=%s, .retries=%d, .result = %#x, .flags=", buf, cmd->retries, cmd->result); scsi_flags_show(m, cmd->flags, scsi_cmd_flags, ARRAY_SIZE(scsi_cmd_flags)); seq_printf(m, ", .timeout=%d.%03d, allocated %d.%03d s ago", timeout_ms / 1000, timeout_ms % 1000, alloc_ms / 1000, alloc_ms % 1000); }