qemu/include/hw/scsi/esp.h
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   1#ifndef QEMU_HW_ESP_H
   2#define QEMU_HW_ESP_H
   3
   4#include "hw/scsi/scsi.h"
   5#include "hw/sysbus.h"
   6#include "qemu/fifo8.h"
   7#include "qom/object.h"
   8
   9/* esp.c */
  10#define ESP_MAX_DEVS 7
  11typedef void (*ESPDMAMemoryReadWriteFunc)(void *opaque, uint8_t *buf, int len);
  12
  13#define ESP_REGS 16
  14#define ESP_FIFO_SZ 16
  15#define ESP_CMDFIFO_SZ 32
  16
  17typedef struct ESPState ESPState;
  18
  19#define TYPE_ESP "esp"
  20OBJECT_DECLARE_SIMPLE_TYPE(ESPState, ESP)
  21
  22struct ESPState {
  23    DeviceState parent_obj;
  24
  25    uint8_t rregs[ESP_REGS];
  26    uint8_t wregs[ESP_REGS];
  27    qemu_irq irq;
  28    qemu_irq irq_data;
  29    uint8_t chip_id;
  30    bool tchi_written;
  31    int32_t ti_size;
  32    uint32_t status;
  33    uint32_t dma;
  34    Fifo8 fifo;
  35    SCSIBus bus;
  36    SCSIDevice *current_dev;
  37    SCSIRequest *current_req;
  38    Fifo8 cmdfifo;
  39    uint8_t cmdfifo_cdb_offset;
  40    uint8_t lun;
  41    uint32_t do_cmd;
  42
  43    bool data_in_ready;
  44    uint8_t ti_cmd;
  45    int dma_enabled;
  46
  47    uint32_t async_len;
  48    uint8_t *async_buf;
  49
  50    ESPDMAMemoryReadWriteFunc dma_memory_read;
  51    ESPDMAMemoryReadWriteFunc dma_memory_write;
  52    void *dma_opaque;
  53    void (*dma_cb)(ESPState *s);
  54    uint8_t pdma_cb;
  55
  56    uint8_t mig_version_id;
  57
  58    /* Legacy fields for vmstate_esp version < 5 */
  59    uint32_t mig_dma_left;
  60    uint32_t mig_deferred_status;
  61    bool mig_deferred_complete;
  62    uint32_t mig_ti_rptr, mig_ti_wptr;
  63    uint8_t mig_ti_buf[ESP_FIFO_SZ];
  64    uint8_t mig_cmdbuf[ESP_CMDFIFO_SZ];
  65    uint32_t mig_cmdlen;
  66};
  67
  68#define TYPE_SYSBUS_ESP "sysbus-esp"
  69OBJECT_DECLARE_SIMPLE_TYPE(SysBusESPState, SYSBUS_ESP)
  70
  71struct SysBusESPState {
  72    /*< private >*/
  73    SysBusDevice parent_obj;
  74    /*< public >*/
  75
  76    MemoryRegion iomem;
  77    MemoryRegion pdma;
  78    uint32_t it_shift;
  79    ESPState esp;
  80};
  81
  82#define ESP_TCLO   0x0
  83#define ESP_TCMID  0x1
  84#define ESP_FIFO   0x2
  85#define ESP_CMD    0x3
  86#define ESP_RSTAT  0x4
  87#define ESP_WBUSID 0x4
  88#define ESP_RINTR  0x5
  89#define ESP_WSEL   0x5
  90#define ESP_RSEQ   0x6
  91#define ESP_WSYNTP 0x6
  92#define ESP_RFLAGS 0x7
  93#define ESP_WSYNO  0x7
  94#define ESP_CFG1   0x8
  95#define ESP_RRES1  0x9
  96#define ESP_WCCF   0x9
  97#define ESP_RRES2  0xa
  98#define ESP_WTEST  0xa
  99#define ESP_CFG2   0xb
 100#define ESP_CFG3   0xc
 101#define ESP_RES3   0xd
 102#define ESP_TCHI   0xe
 103#define ESP_RES4   0xf
 104
 105#define CMD_DMA 0x80
 106#define CMD_CMD 0x7f
 107
 108#define CMD_NOP      0x00
 109#define CMD_FLUSH    0x01
 110#define CMD_RESET    0x02
 111#define CMD_BUSRESET 0x03
 112#define CMD_TI       0x10
 113#define CMD_ICCS     0x11
 114#define CMD_MSGACC   0x12
 115#define CMD_PAD      0x18
 116#define CMD_SATN     0x1a
 117#define CMD_RSTATN   0x1b
 118#define CMD_SEL      0x41
 119#define CMD_SELATN   0x42
 120#define CMD_SELATNS  0x43
 121#define CMD_ENSEL    0x44
 122#define CMD_DISSEL   0x45
 123
 124#define STAT_DO 0x00
 125#define STAT_DI 0x01
 126#define STAT_CD 0x02
 127#define STAT_ST 0x03
 128#define STAT_MO 0x06
 129#define STAT_MI 0x07
 130#define STAT_PIO_MASK 0x06
 131
 132#define STAT_TC 0x10
 133#define STAT_PE 0x20
 134#define STAT_GE 0x40
 135#define STAT_INT 0x80
 136
 137#define BUSID_DID 0x07
 138
 139#define INTR_FC 0x08
 140#define INTR_BS 0x10
 141#define INTR_DC 0x20
 142#define INTR_RST 0x80
 143
 144#define SEQ_0 0x0
 145#define SEQ_MO 0x1
 146#define SEQ_CD 0x4
 147
 148#define CFG1_RESREPT 0x40
 149
 150#define TCHI_FAS100A 0x4
 151#define TCHI_AM53C974 0x12
 152
 153/* PDMA callbacks */
 154enum pdma_cb {
 155    SATN_PDMA_CB = 0,
 156    S_WITHOUT_SATN_PDMA_CB = 1,
 157    SATN_STOP_PDMA_CB = 2,
 158    WRITE_RESPONSE_PDMA_CB = 3,
 159    DO_DMA_PDMA_CB = 4
 160};
 161
 162void esp_dma_enable(ESPState *s, int irq, int level);
 163void esp_request_cancelled(SCSIRequest *req);
 164void esp_command_complete(SCSIRequest *req, size_t resid);
 165void esp_transfer_data(SCSIRequest *req, uint32_t len);
 166void esp_hard_reset(ESPState *s);
 167uint64_t esp_reg_read(ESPState *s, uint32_t saddr);
 168void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val);
 169extern const VMStateDescription vmstate_esp;
 170int esp_pre_save(void *opaque);
 171
 172#endif
 173