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24#define GR_MAXEP 16
25
26struct gr_epregs {
27 u32 epctrl;
28 union {
29 struct {
30 u32 slvctrl;
31 u32 slvdata;
32 };
33 struct {
34 u32 dmactrl;
35 u32 dmaaddr;
36 };
37 };
38 u32 epstat;
39};
40
41struct gr_regs {
42 struct gr_epregs epo[GR_MAXEP];
43 struct gr_epregs epi[GR_MAXEP];
44 u32 control;
45 u32 status;
46};
47
48#define GR_EPCTRL_BUFSZ_SCALER 8
49#define GR_EPCTRL_BUFSZ_MASK 0xffe00000
50#define GR_EPCTRL_BUFSZ_POS 21
51#define GR_EPCTRL_PI BIT(20)
52#define GR_EPCTRL_CB BIT(19)
53#define GR_EPCTRL_CS BIT(18)
54#define GR_EPCTRL_MAXPL_MASK 0x0003ff80
55#define GR_EPCTRL_MAXPL_POS 7
56#define GR_EPCTRL_NT_MASK 0x00000060
57#define GR_EPCTRL_NT_POS 5
58#define GR_EPCTRL_TT_MASK 0x00000018
59#define GR_EPCTRL_TT_POS 3
60#define GR_EPCTRL_EH BIT(2)
61#define GR_EPCTRL_ED BIT(1)
62#define GR_EPCTRL_EV BIT(0)
63
64#define GR_DMACTRL_AE BIT(10)
65#define GR_DMACTRL_AD BIT(3)
66#define GR_DMACTRL_AI BIT(2)
67#define GR_DMACTRL_IE BIT(1)
68#define GR_DMACTRL_DA BIT(0)
69
70#define GR_EPSTAT_PT BIT(29)
71#define GR_EPSTAT_PR BIT(29)
72#define GR_EPSTAT_B1CNT_MASK 0x1fff0000
73#define GR_EPSTAT_B1CNT_POS 16
74#define GR_EPSTAT_B0CNT_MASK 0x0000fff8
75#define GR_EPSTAT_B0CNT_POS 3
76#define GR_EPSTAT_B1 BIT(2)
77#define GR_EPSTAT_B0 BIT(1)
78#define GR_EPSTAT_BS BIT(0)
79
80#define GR_CONTROL_SI BIT(31)
81#define GR_CONTROL_UI BIT(30)
82#define GR_CONTROL_VI BIT(29)
83#define GR_CONTROL_SP BIT(28)
84#define GR_CONTROL_FI BIT(27)
85#define GR_CONTROL_EP BIT(14)
86#define GR_CONTROL_DH BIT(13)
87#define GR_CONTROL_RW BIT(12)
88#define GR_CONTROL_TS_MASK 0x00000e00
89#define GR_CONTROL_TS_POS 9
90#define GR_CONTROL_TM BIT(8)
91#define GR_CONTROL_UA_MASK 0x000000fe
92#define GR_CONTROL_UA_POS 1
93#define GR_CONTROL_SU BIT(0)
94
95#define GR_STATUS_NEPI_MASK 0xf0000000
96#define GR_STATUS_NEPI_POS 28
97#define GR_STATUS_NEPO_MASK 0x0f000000
98#define GR_STATUS_NEPO_POS 24
99#define GR_STATUS_DM BIT(23)
100#define GR_STATUS_SU BIT(17)
101#define GR_STATUS_UR BIT(16)
102#define GR_STATUS_VB BIT(15)
103#define GR_STATUS_SP BIT(14)
104#define GR_STATUS_AF_MASK 0x00003800
105#define GR_STATUS_AF_POS 11
106#define GR_STATUS_FN_MASK 0x000007ff
107#define GR_STATUS_FN_POS 0
108
109
110#define MAX_CTRL_PL_SIZE 64
111
112
113
114
115
116struct gr_dma_desc {
117 u32 ctrl;
118 u32 data;
119 u32 next;
120
121
122 u32 paddr;
123 struct gr_dma_desc *next_desc;
124};
125
126#define GR_DESC_OUT_CTRL_SE BIT(17)
127#define GR_DESC_OUT_CTRL_IE BIT(15)
128#define GR_DESC_OUT_CTRL_NX BIT(14)
129#define GR_DESC_OUT_CTRL_EN BIT(13)
130#define GR_DESC_OUT_CTRL_LEN_MASK 0x00001fff
131
132#define GR_DESC_IN_CTRL_MO BIT(18)
133#define GR_DESC_IN_CTRL_PI BIT(17)
134#define GR_DESC_IN_CTRL_ML BIT(16)
135#define GR_DESC_IN_CTRL_IE BIT(15)
136#define GR_DESC_IN_CTRL_NX BIT(14)
137#define GR_DESC_IN_CTRL_EN BIT(13)
138#define GR_DESC_IN_CTRL_LEN_MASK 0x00001fff
139
140#define GR_DESC_DMAADDR_MASK 0xfffffffc
141
142struct gr_ep {
143 struct usb_ep ep;
144 struct gr_udc *dev;
145 u16 bytes_per_buffer;
146 unsigned int dma_start;
147 struct gr_epregs __iomem *regs;
148
149 unsigned num:8;
150 unsigned is_in:1;
151 unsigned stopped:1;
152 unsigned wedged:1;
153 unsigned callback:1;
154
155
156 struct list_head queue;
157
158 struct list_head ep_list;
159
160
161 void *tailbuf;
162 dma_addr_t tailbuf_paddr;
163};
164
165struct gr_request {
166 struct usb_request req;
167 struct list_head queue;
168
169
170 struct gr_dma_desc *first_desc;
171 struct gr_dma_desc *curr_desc;
172 struct gr_dma_desc *last_desc;
173
174 u16 evenlen;
175 u16 oddlen;
176
177 u8 setup;
178};
179
180enum gr_ep0state {
181 GR_EP0_DISCONNECT = 0,
182 GR_EP0_SETUP,
183 GR_EP0_IDATA,
184 GR_EP0_ODATA,
185 GR_EP0_ISTATUS,
186 GR_EP0_OSTATUS,
187 GR_EP0_STALL,
188 GR_EP0_SUSPEND,
189};
190
191struct gr_udc {
192 struct usb_gadget gadget;
193 struct gr_ep epi[GR_MAXEP];
194 struct gr_ep epo[GR_MAXEP];
195 struct usb_gadget_driver *driver;
196 struct dma_pool *desc_pool;
197 struct device *dev;
198
199 enum gr_ep0state ep0state;
200 struct gr_request *ep0reqo;
201 struct gr_request *ep0reqi;
202
203 struct gr_regs __iomem *regs;
204 int irq;
205 int irqi;
206 int irqo;
207
208 unsigned added:1;
209 unsigned irq_enabled:1;
210 unsigned remote_wakeup:1;
211
212 u8 test_mode;
213
214 enum usb_device_state suspended_from;
215
216 unsigned int nepi;
217 unsigned int nepo;
218
219 struct list_head ep_list;
220
221 spinlock_t lock;
222
223 struct dentry *dfs_root;
224 struct dentry *dfs_state;
225};
226
227#define to_gr_udc(gadget) (container_of((gadget), struct gr_udc, gadget))
228