From 6d97f5acbf029b9c3cbf75fb7102931c2afe8dd3 Mon Sep 17 00:00:00 2001
From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Date: Fri, 12 Jan 2024 12:53:37 +0000
Subject: [PATCH] esp.c: remove do_cmd from ESPState

Now that the accumulation of the CDB is handled by SCSI phase, there is no need
for a separate variable to control it.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Helge Deller <deller@gmx.de>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20240112125420.514425-46-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/scsi/esp.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c
index e679b1c39b..1f7dff4ca6 100644
--- a/hw/scsi/esp.c
+++ b/hw/scsi/esp.c
@@ -380,7 +380,6 @@ static void satn_pdma_cb(ESPState *s)
 
     if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) {
         s->cmdfifo_cdb_offset = 1;
-        s->do_cmd = 0;
         do_cmd(s);
     }
 }
@@ -400,13 +399,11 @@ static void handle_satn(ESPState *s)
     cmdlen = get_cmd(s, ESP_CMDFIFO_SZ);
     if (cmdlen > 0) {
         s->cmdfifo_cdb_offset = 1;
-        s->do_cmd = 0;
         do_cmd(s);
     } else if (cmdlen == 0) {
         if (s->dma) {
             esp_raise_drq(s);
         }
-        s->do_cmd = 1;
         /* Target present, but no cmd yet - switch to command phase */
         s->rregs[ESP_RSEQ] = SEQ_CD;
         esp_set_phase(s, STAT_CD);
@@ -428,13 +425,11 @@ static void handle_s_without_atn(ESPState *s)
     cmdlen = get_cmd(s, ESP_CMDFIFO_SZ);
     if (cmdlen > 0) {
         s->cmdfifo_cdb_offset = 0;
-        s->do_cmd = 0;
         do_cmd(s);
     } else if (cmdlen == 0) {
         if (s->dma) {
             esp_raise_drq(s);
         }
-        s->do_cmd = 1;
         /* Target present, but no cmd yet - switch to command phase */
         s->rregs[ESP_RSEQ] = SEQ_CD;
         esp_set_phase(s, STAT_CD);
@@ -453,7 +448,6 @@ static void satn_stop_pdma_cb(ESPState *s)
 
     if (!esp_get_tc(s) && !fifo8_is_empty(&s->cmdfifo)) {
         trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo));
-        s->do_cmd = 1;
         s->cmdfifo_cdb_offset = 1;
         esp_set_phase(s, STAT_CD);
         s->rregs[ESP_RSTAT] |= STAT_TC;
@@ -478,7 +472,6 @@ static void handle_satn_stop(ESPState *s)
     cmdlen = get_cmd(s, 1);
     if (cmdlen > 0) {
         trace_esp_handle_satn_stop(fifo8_num_used(&s->cmdfifo));
-        s->do_cmd = 1;
         s->cmdfifo_cdb_offset = 1;
         esp_set_phase(s, STAT_MO);
         s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC;
@@ -488,7 +481,6 @@ static void handle_satn_stop(ESPState *s)
         if (s->dma) {
             esp_raise_drq(s);
         }
-        s->do_cmd = 1;
         /* Target present, switch to message out phase */
         s->rregs[ESP_RSEQ] = SEQ_MO;
         esp_set_phase(s, STAT_MO);
@@ -567,7 +559,6 @@ static void do_dma_pdma_cb(ESPState *s)
             }
 
             /* Command has been received */
-            s->do_cmd = 0;
             do_cmd(s);
         } else {
             /*
@@ -669,7 +660,6 @@ static void esp_do_dma(ESPState *s)
             }
 
             /* Command has been received */
-            s->do_cmd = 0;
             do_cmd(s);
         } else {
             /*
@@ -805,7 +795,6 @@ static void esp_do_nodma(ESPState *s)
             }
 
             /* Command has been received */
-            s->do_cmd = 0;
             do_cmd(s);
         } else {
             /*
@@ -949,7 +938,6 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len)
     int to_device = (esp_get_phase(s) == STAT_DO);
     uint32_t dmalen = esp_get_tc(s);
 
-    assert(!s->do_cmd);
     trace_esp_transfer_data(dmalen, s->ti_size);
     s->async_len = len;
     s->async_buf = scsi_req_get_buf(req);
@@ -1012,7 +1000,6 @@ void esp_hard_reset(ESPState *s)
     fifo8_reset(&s->fifo);
     fifo8_reset(&s->cmdfifo);
     s->dma = 0;
-    s->do_cmd = 0;
     s->dma_cb = NULL;
 
     s->rregs[ESP_CFG1] = 7;