xref: /openbmc/qemu/include/hw/scsi/esp.h (revision 442de89a)
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
11 typedef 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 
17 typedef struct ESPState ESPState;
18 
19 #define TYPE_ESP "esp"
20 OBJECT_DECLARE_SIMPLE_TYPE(ESPState, ESP)
21 
22 struct 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 drq_irq;
29     bool drq_state;
30     uint8_t chip_id;
31     bool tchi_written;
32     int32_t ti_size;
33     uint32_t status;
34     uint32_t dma;
35     Fifo8 fifo;
36     SCSIBus bus;
37     SCSIDevice *current_dev;
38     SCSIRequest *current_req;
39     Fifo8 cmdfifo;
40     uint8_t cmdfifo_cdb_offset;
41     uint8_t lun;
42     uint32_t do_cmd;
43 
44     bool data_ready;
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 
55     uint8_t mig_version_id;
56 
57     /* Legacy fields for vmstate_esp version < 5 */
58     uint32_t mig_dma_left;
59     uint32_t mig_deferred_status;
60     bool mig_deferred_complete;
61     uint32_t mig_ti_rptr, mig_ti_wptr;
62     uint8_t mig_ti_buf[ESP_FIFO_SZ];
63     uint8_t mig_cmdbuf[ESP_CMDFIFO_SZ];
64     uint32_t mig_cmdlen;
65 
66     uint8_t mig_ti_cmd;
67 };
68 
69 #define TYPE_SYSBUS_ESP "sysbus-esp"
70 OBJECT_DECLARE_SIMPLE_TYPE(SysBusESPState, SYSBUS_ESP)
71 
72 struct SysBusESPState {
73     /*< private >*/
74     SysBusDevice parent_obj;
75     /*< public >*/
76 
77     MemoryRegion iomem;
78     MemoryRegion pdma;
79     uint32_t it_shift;
80     ESPState esp;
81 };
82 
83 #define ESP_TCLO   0x0
84 #define ESP_TCMID  0x1
85 #define ESP_FIFO   0x2
86 #define ESP_CMD    0x3
87 #define ESP_RSTAT  0x4
88 #define ESP_WBUSID 0x4
89 #define ESP_RINTR  0x5
90 #define ESP_WSEL   0x5
91 #define ESP_RSEQ   0x6
92 #define ESP_WSYNTP 0x6
93 #define ESP_RFLAGS 0x7
94 #define ESP_WSYNO  0x7
95 #define ESP_CFG1   0x8
96 #define ESP_RRES1  0x9
97 #define ESP_WCCF   0x9
98 #define ESP_RRES2  0xa
99 #define ESP_WTEST  0xa
100 #define ESP_CFG2   0xb
101 #define ESP_CFG3   0xc
102 #define ESP_RES3   0xd
103 #define ESP_TCHI   0xe
104 #define ESP_RES4   0xf
105 
106 #define CMD_DMA 0x80
107 #define CMD_CMD 0x7f
108 
109 #define CMD_NOP      0x00
110 #define CMD_FLUSH    0x01
111 #define CMD_RESET    0x02
112 #define CMD_BUSRESET 0x03
113 #define CMD_TI       0x10
114 #define CMD_ICCS     0x11
115 #define CMD_MSGACC   0x12
116 #define CMD_PAD      0x18
117 #define CMD_SATN     0x1a
118 #define CMD_RSTATN   0x1b
119 #define CMD_SEL      0x41
120 #define CMD_SELATN   0x42
121 #define CMD_SELATNS  0x43
122 #define CMD_ENSEL    0x44
123 #define CMD_DISSEL   0x45
124 
125 #define STAT_DO 0x00
126 #define STAT_DI 0x01
127 #define STAT_CD 0x02
128 #define STAT_ST 0x03
129 #define STAT_MO 0x06
130 #define STAT_MI 0x07
131 #define STAT_PIO_MASK 0x06
132 
133 #define STAT_TC 0x10
134 #define STAT_PE 0x20
135 #define STAT_GE 0x40
136 #define STAT_INT 0x80
137 
138 #define BUSID_DID 0x07
139 
140 #define INTR_FC 0x08
141 #define INTR_BS 0x10
142 #define INTR_DC 0x20
143 #define INTR_RST 0x80
144 
145 #define SEQ_0 0x0
146 #define SEQ_MO 0x1
147 #define SEQ_CD 0x4
148 
149 #define CFG1_RESREPT 0x40
150 
151 #define TCHI_FAS100A 0x4
152 #define TCHI_AM53C974 0x12
153 
154 void esp_dma_enable(ESPState *s, int irq, int level);
155 void esp_request_cancelled(SCSIRequest *req);
156 void esp_command_complete(SCSIRequest *req, size_t resid);
157 void esp_transfer_data(SCSIRequest *req, uint32_t len);
158 void esp_hard_reset(ESPState *s);
159 uint64_t esp_reg_read(ESPState *s, uint32_t saddr);
160 void esp_reg_write(ESPState *s, uint32_t saddr, uint64_t val);
161 extern const VMStateDescription vmstate_esp;
162 int esp_pre_save(void *opaque);
163 
164 #endif
165