Merge remote-tracking branch 'remotes/mcayland/tags/qemu-sparc-20210307' into staging

qemu-sparc queue

# gpg: Signature made Sun 07 Mar 2021 12:07:13 GMT
# gpg:                using RSA key CC621AB98E82200D915CC9C45BC2C56FAE0F321F
# gpg:                issuer "mark.cave-ayland@ilande.co.uk"
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>" [full]
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C  C9C4 5BC2 C56F AE0F 321F

* remotes/mcayland/tags/qemu-sparc-20210307: (42 commits)
  esp: add support for unaligned accesses
  esp: implement non-DMA transfers in PDMA mode
  esp: add trivial implementation of the ESP_RFLAGS register
  esp: convert cmdbuf from array to Fifo8
  esp: convert ti_buf from array to Fifo8
  esp: transition to message out phase after SATN and stop command
  esp: add maxlen parameter to get_cmd()
  esp: raise interrupt after every non-DMA byte transferred to the FIFO
  esp: remove old deferred command completion mechanism
  esp: defer command completion interrupt on incoming data transfers
  esp: latch individual bits in ESP_RINTR register
  esp: implement FIFO flush command
  esp: add 4 byte PDMA read and write transfers
  esp: remove pdma_origin from ESPState
  esp: use FIFO for PDMA transfers between initiator and device
  esp: fix PDMA target selection
  esp: rename get_cmd_cb() to esp_select()
  esp: remove CMD pdma_origin
  esp: use in-built TC to determine PDMA transfer length
  esp: use ti_wptr/ti_rptr to manage the current FIFO position for PDMA
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 26 insertions, 26 deletions

diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h
index d8a6263..9508849 100644
--- a/include/hw/scsi/esp.h
+++ b/include/hw/scsi/esp.h
@@ -3,6 +3,7 @@
 
 #include "hw/scsi/scsi.h"
 #include "hw/sysbus.h"
+#include "qemu/fifo8.h"
 #include "qom/object.h"
 
 /* esp.c */
@@ -10,19 +11,17 @@
 typedef void (*ESPDMAMemoryReadWriteFunc)(void *opaque, uint8_t *buf, int len);
 
 #define ESP_REGS 16
-#define TI_BUFSZ 16
-#define ESP_CMDBUF_SZ 32
+#define ESP_FIFO_SZ 16
+#define ESP_CMDFIFO_SZ 32
 
 typedef struct ESPState ESPState;
 
-enum pdma_origin_id {
-    PDMA,
-    TI,
-    CMD,
-    ASYNC,
-};
+#define TYPE_ESP "esp"
+OBJECT_DECLARE_SIMPLE_TYPE(ESPState, ESP)
 
 struct ESPState {
+    DeviceState parent_obj;
+
     uint8_t rregs[ESP_REGS];
     uint8_t wregs[ESP_REGS];
     qemu_irq irq;
@@ -30,24 +29,18 @@ struct ESPState {
     uint8_t chip_id;
     bool tchi_written;
     int32_t ti_size;
-    uint32_t ti_rptr, ti_wptr;
     uint32_t status;
-    uint32_t deferred_status;
-    bool deferred_complete;
     uint32_t dma;
-    uint8_t ti_buf[TI_BUFSZ];
+    Fifo8 fifo;
     SCSIBus bus;
     SCSIDevice *current_dev;
     SCSIRequest *current_req;
-    uint8_t cmdbuf[ESP_CMDBUF_SZ];
-    uint32_t cmdlen;
+    Fifo8 cmdfifo;
+    uint8_t cmdfifo_cdb_offset;
     uint32_t do_cmd;
 
-    /* The amount of data left in the current DMA transfer.  */
-    uint32_t dma_left;
-    /* The size of the current DMA transfer.  Zero if no transfer is in
-       progress.  */
-    uint32_t dma_counter;
+    bool data_in_ready;
+    uint8_t ti_cmd;
     int dma_enabled;
 
     uint32_t async_len;
@@ -57,16 +50,22 @@ struct ESPState {
     ESPDMAMemoryReadWriteFunc dma_memory_write;
     void *dma_opaque;
     void (*dma_cb)(ESPState *s);
-    uint8_t pdma_buf[32];
-    int pdma_origin;
-    uint32_t pdma_len;
-    uint32_t pdma_start;
-    uint32_t pdma_cur;
     void (*pdma_cb)(ESPState *s);
+
+    uint8_t mig_version_id;
+
+    /* Legacy fields for vmstate_esp version < 5 */
+    uint32_t mig_dma_left;
+    uint32_t mig_deferred_status;
+    bool mig_deferred_complete;
+    uint32_t mig_ti_rptr, mig_ti_wptr;
+    uint8_t mig_ti_buf[ESP_FIFO_SZ];
+    uint8_t mig_cmdbuf[ESP_CMDFIFO_SZ];
+    uint32_t mig_cmdlen;
 };
 
-#define TYPE_ESP "esp"
-OBJECT_DECLARE_SIMPLE_TYPE(SysBusESPState, ESP)
+#define TYPE_SYSBUS_ESP "sysbus-esp"
+OBJECT_DECLARE_SIMPLE_TYPE(SysBusESPState, SYSBUS_ESP)
 
 struct SysBusESPState {
     /*< private >*/
@@ -142,6 +141,7 @@ struct SysBusESPState {
 #define INTR_RST 0x80
 
 #define SEQ_0 0x0
+#define SEQ_MO 0x1
 #define SEQ_CD 0x4
 
 #define CFG1_RESREPT 0x40