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11#ifndef _CAVIUM_MMC_H_
12#define _CAVIUM_MMC_H_
13
14#include <linux/bitops.h>
15#include <linux/clk.h>
16#include <linux/gpio/consumer.h>
17#include <linux/io.h>
18#include <linux/mmc/host.h>
19#include <linux/of.h>
20#include <linux/scatterlist.h>
21#include <linux/semaphore.h>
22
23#define CAVIUM_MAX_MMC 4
24
25
26#define MIO_EMM_DMA_FIFO_CFG(x) (0x00 + x->reg_off_dma)
27#define MIO_EMM_DMA_FIFO_ADR(x) (0x10 + x->reg_off_dma)
28#define MIO_EMM_DMA_FIFO_CMD(x) (0x18 + x->reg_off_dma)
29#define MIO_EMM_DMA_CFG(x) (0x20 + x->reg_off_dma)
30#define MIO_EMM_DMA_ADR(x) (0x28 + x->reg_off_dma)
31#define MIO_EMM_DMA_INT(x) (0x30 + x->reg_off_dma)
32#define MIO_EMM_DMA_INT_W1S(x) (0x38 + x->reg_off_dma)
33#define MIO_EMM_DMA_INT_ENA_W1S(x) (0x40 + x->reg_off_dma)
34#define MIO_EMM_DMA_INT_ENA_W1C(x) (0x48 + x->reg_off_dma)
35
36
37#define MIO_EMM_CFG(x) (0x00 + x->reg_off)
38#define MIO_EMM_SWITCH(x) (0x48 + x->reg_off)
39#define MIO_EMM_DMA(x) (0x50 + x->reg_off)
40#define MIO_EMM_CMD(x) (0x58 + x->reg_off)
41#define MIO_EMM_RSP_STS(x) (0x60 + x->reg_off)
42#define MIO_EMM_RSP_LO(x) (0x68 + x->reg_off)
43#define MIO_EMM_RSP_HI(x) (0x70 + x->reg_off)
44#define MIO_EMM_INT(x) (0x78 + x->reg_off)
45#define MIO_EMM_INT_EN(x) (0x80 + x->reg_off)
46#define MIO_EMM_WDOG(x) (0x88 + x->reg_off)
47#define MIO_EMM_SAMPLE(x) (0x90 + x->reg_off)
48#define MIO_EMM_STS_MASK(x) (0x98 + x->reg_off)
49#define MIO_EMM_RCA(x) (0xa0 + x->reg_off)
50#define MIO_EMM_INT_EN_SET(x) (0xb0 + x->reg_off)
51#define MIO_EMM_INT_EN_CLR(x) (0xb8 + x->reg_off)
52#define MIO_EMM_BUF_IDX(x) (0xe0 + x->reg_off)
53#define MIO_EMM_BUF_DAT(x) (0xe8 + x->reg_off)
54
55struct cvm_mmc_host {
56 struct device *dev;
57 void __iomem *base;
58 void __iomem *dma_base;
59 int reg_off;
60 int reg_off_dma;
61 u64 emm_cfg;
62 u64 n_minus_one;
63 int last_slot;
64 struct clk *clk;
65 int sys_freq;
66
67 struct mmc_request *current_req;
68 struct sg_mapping_iter smi;
69 bool dma_active;
70 bool use_sg;
71
72 bool has_ciu3;
73 bool big_dma_addr;
74 bool need_irq_handler_lock;
75 spinlock_t irq_handler_lock;
76 struct semaphore mmc_serializer;
77
78 struct gpio_desc *global_pwr_gpiod;
79 atomic_t shared_power_users;
80
81 struct cvm_mmc_slot *slot[CAVIUM_MAX_MMC];
82 struct platform_device *slot_pdev[CAVIUM_MAX_MMC];
83
84 void (*set_shared_power)(struct cvm_mmc_host *, int);
85 void (*acquire_bus)(struct cvm_mmc_host *);
86 void (*release_bus)(struct cvm_mmc_host *);
87 void (*int_enable)(struct cvm_mmc_host *, u64);
88
89 void (*dmar_fixup)(struct cvm_mmc_host *, struct mmc_command *,
90 struct mmc_data *, u64);
91 void (*dmar_fixup_done)(struct cvm_mmc_host *);
92};
93
94struct cvm_mmc_slot {
95 struct mmc_host *mmc;
96 struct cvm_mmc_host *host;
97
98 u64 clock;
99
100 u64 cached_switch;
101 u64 cached_rca;
102
103 unsigned int cmd_cnt;
104 unsigned int dat_cnt;
105
106 int bus_id;
107};
108
109struct cvm_mmc_cr_type {
110 u8 ctype;
111 u8 rtype;
112};
113
114struct cvm_mmc_cr_mods {
115 u8 ctype_xor;
116 u8 rtype_xor;
117};
118
119
120#define MIO_EMM_DMA_FIFO_CFG_CLR BIT_ULL(16)
121#define MIO_EMM_DMA_FIFO_CFG_INT_LVL GENMASK_ULL(12, 8)
122#define MIO_EMM_DMA_FIFO_CFG_COUNT GENMASK_ULL(4, 0)
123
124#define MIO_EMM_DMA_FIFO_CMD_RW BIT_ULL(62)
125#define MIO_EMM_DMA_FIFO_CMD_INTDIS BIT_ULL(60)
126#define MIO_EMM_DMA_FIFO_CMD_SWAP32 BIT_ULL(59)
127#define MIO_EMM_DMA_FIFO_CMD_SWAP16 BIT_ULL(58)
128#define MIO_EMM_DMA_FIFO_CMD_SWAP8 BIT_ULL(57)
129#define MIO_EMM_DMA_FIFO_CMD_ENDIAN BIT_ULL(56)
130#define MIO_EMM_DMA_FIFO_CMD_SIZE GENMASK_ULL(55, 36)
131
132#define MIO_EMM_CMD_SKIP_BUSY BIT_ULL(62)
133#define MIO_EMM_CMD_BUS_ID GENMASK_ULL(61, 60)
134#define MIO_EMM_CMD_VAL BIT_ULL(59)
135#define MIO_EMM_CMD_DBUF BIT_ULL(55)
136#define MIO_EMM_CMD_OFFSET GENMASK_ULL(54, 49)
137#define MIO_EMM_CMD_CTYPE_XOR GENMASK_ULL(42, 41)
138#define MIO_EMM_CMD_RTYPE_XOR GENMASK_ULL(40, 38)
139#define MIO_EMM_CMD_IDX GENMASK_ULL(37, 32)
140#define MIO_EMM_CMD_ARG GENMASK_ULL(31, 0)
141
142#define MIO_EMM_DMA_SKIP_BUSY BIT_ULL(62)
143#define MIO_EMM_DMA_BUS_ID GENMASK_ULL(61, 60)
144#define MIO_EMM_DMA_VAL BIT_ULL(59)
145#define MIO_EMM_DMA_SECTOR BIT_ULL(58)
146#define MIO_EMM_DMA_DAT_NULL BIT_ULL(57)
147#define MIO_EMM_DMA_THRES GENMASK_ULL(56, 51)
148#define MIO_EMM_DMA_REL_WR BIT_ULL(50)
149#define MIO_EMM_DMA_RW BIT_ULL(49)
150#define MIO_EMM_DMA_MULTI BIT_ULL(48)
151#define MIO_EMM_DMA_BLOCK_CNT GENMASK_ULL(47, 32)
152#define MIO_EMM_DMA_CARD_ADDR GENMASK_ULL(31, 0)
153
154#define MIO_EMM_DMA_CFG_EN BIT_ULL(63)
155#define MIO_EMM_DMA_CFG_RW BIT_ULL(62)
156#define MIO_EMM_DMA_CFG_CLR BIT_ULL(61)
157#define MIO_EMM_DMA_CFG_SWAP32 BIT_ULL(59)
158#define MIO_EMM_DMA_CFG_SWAP16 BIT_ULL(58)
159#define MIO_EMM_DMA_CFG_SWAP8 BIT_ULL(57)
160#define MIO_EMM_DMA_CFG_ENDIAN BIT_ULL(56)
161#define MIO_EMM_DMA_CFG_SIZE GENMASK_ULL(55, 36)
162#define MIO_EMM_DMA_CFG_ADR GENMASK_ULL(35, 0)
163
164#define MIO_EMM_INT_SWITCH_ERR BIT_ULL(6)
165#define MIO_EMM_INT_SWITCH_DONE BIT_ULL(5)
166#define MIO_EMM_INT_DMA_ERR BIT_ULL(4)
167#define MIO_EMM_INT_CMD_ERR BIT_ULL(3)
168#define MIO_EMM_INT_DMA_DONE BIT_ULL(2)
169#define MIO_EMM_INT_CMD_DONE BIT_ULL(1)
170#define MIO_EMM_INT_BUF_DONE BIT_ULL(0)
171
172#define MIO_EMM_RSP_STS_BUS_ID GENMASK_ULL(61, 60)
173#define MIO_EMM_RSP_STS_CMD_VAL BIT_ULL(59)
174#define MIO_EMM_RSP_STS_SWITCH_VAL BIT_ULL(58)
175#define MIO_EMM_RSP_STS_DMA_VAL BIT_ULL(57)
176#define MIO_EMM_RSP_STS_DMA_PEND BIT_ULL(56)
177#define MIO_EMM_RSP_STS_DBUF_ERR BIT_ULL(28)
178#define MIO_EMM_RSP_STS_DBUF BIT_ULL(23)
179#define MIO_EMM_RSP_STS_BLK_TIMEOUT BIT_ULL(22)
180#define MIO_EMM_RSP_STS_BLK_CRC_ERR BIT_ULL(21)
181#define MIO_EMM_RSP_STS_RSP_BUSYBIT BIT_ULL(20)
182#define MIO_EMM_RSP_STS_STP_TIMEOUT BIT_ULL(19)
183#define MIO_EMM_RSP_STS_STP_CRC_ERR BIT_ULL(18)
184#define MIO_EMM_RSP_STS_STP_BAD_STS BIT_ULL(17)
185#define MIO_EMM_RSP_STS_STP_VAL BIT_ULL(16)
186#define MIO_EMM_RSP_STS_RSP_TIMEOUT BIT_ULL(15)
187#define MIO_EMM_RSP_STS_RSP_CRC_ERR BIT_ULL(14)
188#define MIO_EMM_RSP_STS_RSP_BAD_STS BIT_ULL(13)
189#define MIO_EMM_RSP_STS_RSP_VAL BIT_ULL(12)
190#define MIO_EMM_RSP_STS_RSP_TYPE GENMASK_ULL(11, 9)
191#define MIO_EMM_RSP_STS_CMD_TYPE GENMASK_ULL(8, 7)
192#define MIO_EMM_RSP_STS_CMD_IDX GENMASK_ULL(6, 1)
193#define MIO_EMM_RSP_STS_CMD_DONE BIT_ULL(0)
194
195#define MIO_EMM_SAMPLE_CMD_CNT GENMASK_ULL(25, 16)
196#define MIO_EMM_SAMPLE_DAT_CNT GENMASK_ULL(9, 0)
197
198#define MIO_EMM_SWITCH_BUS_ID GENMASK_ULL(61, 60)
199#define MIO_EMM_SWITCH_EXE BIT_ULL(59)
200#define MIO_EMM_SWITCH_ERR0 BIT_ULL(58)
201#define MIO_EMM_SWITCH_ERR1 BIT_ULL(57)
202#define MIO_EMM_SWITCH_ERR2 BIT_ULL(56)
203#define MIO_EMM_SWITCH_HS_TIMING BIT_ULL(48)
204#define MIO_EMM_SWITCH_BUS_WIDTH GENMASK_ULL(42, 40)
205#define MIO_EMM_SWITCH_POWER_CLASS GENMASK_ULL(35, 32)
206#define MIO_EMM_SWITCH_CLK_HI GENMASK_ULL(31, 16)
207#define MIO_EMM_SWITCH_CLK_LO GENMASK_ULL(15, 0)
208
209
210irqreturn_t cvm_mmc_interrupt(int irq, void *dev_id);
211int cvm_mmc_of_slot_probe(struct device *dev, struct cvm_mmc_host *host);
212int cvm_mmc_of_slot_remove(struct cvm_mmc_slot *slot);
213extern const char *cvm_mmc_irq_names[];
214
215#endif
216
