include/hw/scsi/esp.h

   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
   7 /* esp.c */
   8 #define ESP_MAX_DEVS 7
   9 typedef void (*ESPDMAMemoryReadWriteFunc)(void *opaque, uint8_t *buf, int len);
  10
  11 #define ESP_REGS 16
  12 #define TI_BUFSZ 16
  13 #define ESP_CMDBUF_SZ 32
  14
  15 typedef struct ESPState ESPState;
  16
  17 enum pdma_origin_id {
  18     PDMA,
  19     TI,
  20     CMD,
  21     ASYNC,
  22 };
  23
  24 struct ESPState {
  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 ti_rptr, ti_wptr;
  33     uint32_t status;
  34     uint32_t deferred_status;
  35     bool deferred_complete;
  36     uint32_t dma;
  37     uint8_t ti_buf[TI_BUFSZ];
  38     SCSIBus bus;
  39     SCSIDevice *current_dev;
  40     SCSIRequest *current_req;
  41     uint8_t cmdbuf[ESP_CMDBUF_SZ];
  42     uint32_t cmdlen;
  43     uint32_t do_cmd;
  44
  45     /* The amount of data left in the current DMA transfer.  */
  46     uint32_t dma_left;
  47     /* The size of the current DMA transfer.  Zero if no transfer is in
  48        progress.  */
  49     uint32_t dma_counter;
  50     int dma_enabled;
  51
  52     uint32_t async_len;
  53     uint8_t *async_buf;
  54
  55     ESPDMAMemoryReadWriteFunc dma_memory_read;
  56     ESPDMAMemoryReadWriteFunc dma_memory_write;
  57     void *dma_opaque;
  58     void (*dma_cb)(ESPState *s);
  59     uint8_t pdma_buf[32];
  60     int pdma_origin;
  61     uint32_t pdma_len;
  62     uint32_t pdma_start;
  63     uint32_t pdma_cur;
  64     void (*pdma_cb)(ESPState *s);
  65 };
  66
  67 #define TYPE_ESP "esp"
  68 #define ESP_STATE(obj) OBJECT_CHECK(SysBusESPState, (obj), TYPE_ESP)
  69
  70 typedef struct {
  71     /*< private >*/
  72     SysBusDevice parent_obj;
  73     /*< public >*/
  74
  75     MemoryRegion iomem;
  76     MemoryRegion pdma;
  77     uint32_t it_shift;
  78     ESPState esp;
  79 } SysBusESPState;
  80
  81 #define ESP_TCLO   0x0
  82 #define ESP_TCMID  0x1
  83 #define ESP_FIFO   0x2
  84 #define ESP_CMD    0x3
  85 #define ESP_RSTAT  0x4
  86 #define ESP_WBUSID 0x4
  87 #define ESP_RINTR  0x5
  88 #define ESP_WSEL   0x5
  89 #define ESP_RSEQ   0x6
  90 #define ESP_WSYNTP 0x6
  91 #define ESP_RFLAGS 0x7
  92 #define ESP_WSYNO  0x7
  93 #define ESP_CFG1   0x8
  94 #define ESP_RRES1  0x9
  95 #define ESP_WCCF   0x9
  96 #define ESP_RRES2  0xa
  97 #define ESP_WTEST  0xa
  98 #define ESP_CFG2   0xb
  99 #define ESP_CFG3   0xc
 100 #define ESP_RES3   0xd
 101 #define ESP_TCHI   0xe
 102 #define ESP_RES4   0xf
 103
 104 #define CMD_DMA 0x80
 105 #define CMD_CMD 0x7f
 106
 107 #define CMD_NOP      0x00
 108 #define CMD_FLUSH    0x01
 109 #define CMD_RESET    0x02
 110 #define CMD_BUSRESET 0x03
 111 #define CMD_TI       0x10
 112 #define CMD_ICCS     0x11
 113 #define CMD_MSGACC   0x12
 114 #define CMD_PAD      0x18
 115 #define CMD_SATN     0x1a
 116 #define CMD_RSTATN   0x1b
 117 #define CMD_SEL      0x41
 118 #define CMD_SELATN   0x42
 119 #define CMD_SELATNS  0x43
 120 #define CMD_ENSEL    0x44
 121 #define CMD_DISSEL   0x45
 122
 123 #define STAT_DO 0x00
 124 #define STAT_DI 0x01
 125 #define STAT_CD 0x02
 126 #define STAT_ST 0x03
 127 #define STAT_MO 0x06
 128 #define STAT_MI 0x07
 129 #define STAT_PIO_MASK 0x06
 130
 131 #define STAT_TC 0x10
 132 #define STAT_PE 0x20
 133 #define STAT_GE 0x40
 134 #define STAT_INT 0x80
 135
 136 #define BUSID_DID 0x07
 137
 138 #define INTR_FC 0x08
 139 #define INTR_BS 0x10
 140 #define INTR_DC 0x20
 141 #define INTR_RST 0x80
 142
 143 #define SEQ_0 0x0
 144 #define SEQ_CD 0x4
 145
 146 #define CFG1_RESREPT 0x40
 147
 148 #define TCHI_FAS100A 0x4
 149 #define TCHI_AM53C974 0x12
 150
 151 void esp_dma_enable(ESPState *s, int irq, int level);
 152 void esp_request_cancelled(SCSIRequest *req);
 153 void esp_command_complete(SCSIRequest *req, uint32_t status, size_t resid);
 154 void esp_transfer_data(SCSIRequest *req, uint32_t len);
 155 void esp_hard_reset(ESPState *s);
 156 uint64_t esp_reg_read(ESPState *s, uint32_t saddr);
 157 void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val);
 158 extern const VMStateDescription vmstate_esp;
 159
 160 #endif