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esp: convert cmdbuf from array to Fifo8

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Rename ESP_CMDBUF_SZ to ESP_CMDFIFO_SZ and cmdbuf_cdb_offset to cmdfifo_cdb_offset
to indicate that the command buffer type has changed from an array to a Fifo8.

This also enables us to remove the ESPState field cmdlen since the command length
is now simply the number of elements used in cmdfifo.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210304221103.6369-40-mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Mark Cave-Ayland 2021-03-04 22:11:00 +00:00
parent 042879fc3f
commit 023666da79
2 changed files with 101 additions and 59 deletions
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9
include/hw/scsi/esp.h
View file

@ -12,7 +12,7 @@ typedef void (*ESPDMAMemoryReadWriteFunc)(void *opaque, uint8_t *buf, int len);
#define ESP_REGS 16
#define ESP_FIFO_SZ 16
#define ESP_CMDBUF_SZ 32
#define ESP_CMDFIFO_SZ 32
typedef struct ESPState ESPState;
@ -35,9 +35,8 @@ struct ESPState {
SCSIBus bus;
SCSIDevice *current_dev;
SCSIRequest *current_req;
uint8_t cmdbuf[ESP_CMDBUF_SZ];
uint32_t cmdlen;
uint8_t cmdbuf_cdb_offset;
Fifo8 cmdfifo;
uint8_t cmdfifo_cdb_offset;
uint32_t do_cmd;
bool data_in_ready;
@ -60,6 +59,8 @@ struct ESPState {
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_SYSBUS_ESP "sysbus-esp"