2 * URB OHCI HCD (Host Controller Driver) for USB.
11 * e.g. PCI controllers need this
13 #ifdef CONFIG_SYS_OHCI_SWAP_REG_ACCESS
14 # define ohci_readl(a) __swap_32(*((volatile u32 *)(a)))
15 # define ohci_writel(a, b) (*((volatile u32 *)(b)) = __swap_32((volatile u32)a))
17 # define ohci_readl(a) (*((volatile u32 *)(a)))
18 # define ohci_writel(a, b) (*((volatile u32 *)(b)) = ((volatile u32)a))
19 #endif /* CONFIG_SYS_OHCI_SWAP_REG_ACCESS */
21 #if defined CONFIG_DM_USB && ARCH_DMA_MINALIGN > 16
22 #define ED_ALIGNMENT ARCH_DMA_MINALIGN
24 #define ED_ALIGNMENT 16
27 #if defined CONFIG_DM_USB && ARCH_DMA_MINALIGN > 32
28 #define TD_ALIGNMENT ARCH_DMA_MINALIGN
30 #define TD_ALIGNMENT 32
33 /* functions for doing board or CPU specific setup/cleanup */
34 int usb_board_stop(void);
36 int usb_cpu_init(void);
37 int usb_cpu_stop(void);
38 int usb_cpu_init_fail(void);
42 #define ED_UNLINK 0x01
45 #define ED_URB_DEL 0x08
62 struct ed *ed_rm_list;
64 struct usb_device *usb_dev;
67 } __attribute__((aligned(ED_ALIGNMENT)));
68 typedef struct ed ed_t;
72 #define TD_CC 0xf0000000
73 #define TD_CC_GET(td_p) ((td_p >>28) & 0x0f)
74 #define TD_CC_SET(td_p, cc) (td_p) = ((td_p) & 0x0fffffff) | (((cc) & 0x0f) << 28)
75 #define TD_EC 0x0C000000
76 #define TD_T 0x03000000
77 #define TD_T_DATA0 0x02000000
78 #define TD_T_DATA1 0x03000000
79 #define TD_T_TOGGLE 0x00000000
80 #define TD_R 0x00040000
81 #define TD_DI 0x00E00000
82 #define TD_DI_SET(X) (((X) & 0x07)<< 21)
83 #define TD_DP 0x00180000
84 #define TD_DP_SETUP 0x00000000
85 #define TD_DP_IN 0x00100000
86 #define TD_DP_OUT 0x00080000
88 #define TD_ISO 0x00010000
89 #define TD_DEL 0x00020000
92 #define TD_CC_NOERROR 0x00
93 #define TD_CC_CRC 0x01
94 #define TD_CC_BITSTUFFING 0x02
95 #define TD_CC_DATATOGGLEM 0x03
96 #define TD_CC_STALL 0x04
97 #define TD_DEVNOTRESP 0x05
98 #define TD_PIDCHECKFAIL 0x06
99 #define TD_UNEXPECTEDPID 0x07
100 #define TD_DATAOVERRUN 0x08
101 #define TD_DATAUNDERRUN 0x09
102 #define TD_BUFFEROVERRUN 0x0C
103 #define TD_BUFFERUNDERRUN 0x0D
104 #define TD_NOTACCESSED 0x0F
111 __u32 hwCBP; /* Current Buffer Pointer */
112 __u32 hwNextTD; /* Next TD Pointer */
113 __u32 hwBE; /* Memory Buffer End Pointer */
115 /* #ifndef CONFIG_MPC5200 /\* this seems wrong *\/ */
121 struct td *next_dl_td;
122 struct usb_device *usb_dev;
127 } __attribute__((aligned(TD_ALIGNMENT)));
128 typedef struct td td_t;
130 #define OHCI_ED_SKIP (1 << 14)
133 * The HCCA (Host Controller Communications Area) is a 256 byte
134 * structure defined in the OHCI spec. that the host controller is
135 * told the base address of. It must be 256-byte aligned.
138 #define NUM_INTS 32 /* part of the OHCI standard */
140 __u32 int_table[NUM_INTS]; /* Interrupt ED table */
141 #if defined(CONFIG_MPC5200)
142 __u16 pad1; /* set to 0 on each frame_no change */
143 __u16 frame_no; /* current frame number */
145 __u16 frame_no; /* current frame number */
146 __u16 pad1; /* set to 0 on each frame_no change */
148 __u32 done_head; /* info returned for an interrupt */
149 u8 reserved_for_hc[116];
150 } __attribute__((aligned(256)));
154 * Maximum number of root hub ports.
156 #ifndef CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS
157 # error "CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS undefined!"
161 * This is the structure of the OHCI controller's memory mapped I/O
162 * region. This is Memory Mapped I/O. You must use the ohci_readl() and
163 * ohci_writel() macros defined in this file to access these!!
166 /* control and status registers */
173 /* memory pointers */
175 __u32 ed_periodcurrent;
176 __u32 ed_controlhead;
177 __u32 ed_controlcurrent;
179 __u32 ed_bulkcurrent;
188 struct ohci_roothub_regs {
192 __u32 portstatus[CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS];
194 } __attribute__((aligned(32)));
196 /* Some EHCI controls */
197 #define EHCI_USBCMD_OFF 0x20
198 #define EHCI_USBCMD_HCRESET (1 << 1)
200 /* OHCI CONTROL AND STATUS REGISTER MASKS */
203 * HcControl (control) register masks
205 #define OHCI_CTRL_CBSR (3 << 0) /* control/bulk service ratio */
206 #define OHCI_CTRL_PLE (1 << 2) /* periodic list enable */
207 #define OHCI_CTRL_IE (1 << 3) /* isochronous enable */
208 #define OHCI_CTRL_CLE (1 << 4) /* control list enable */
209 #define OHCI_CTRL_BLE (1 << 5) /* bulk list enable */
210 #define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */
211 #define OHCI_CTRL_IR (1 << 8) /* interrupt routing */
212 #define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
213 #define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */
215 /* pre-shifted values for HCFS */
216 # define OHCI_USB_RESET (0 << 6)
217 # define OHCI_USB_RESUME (1 << 6)
218 # define OHCI_USB_OPER (2 << 6)
219 # define OHCI_USB_SUSPEND (3 << 6)
222 * HcCommandStatus (cmdstatus) register masks
224 #define OHCI_HCR (1 << 0) /* host controller reset */
225 #define OHCI_CLF (1 << 1) /* control list filled */
226 #define OHCI_BLF (1 << 2) /* bulk list filled */
227 #define OHCI_OCR (1 << 3) /* ownership change request */
228 #define OHCI_SOC (3 << 16) /* scheduling overrun count */
231 * masks used with interrupt registers:
232 * HcInterruptStatus (intrstatus)
233 * HcInterruptEnable (intrenable)
234 * HcInterruptDisable (intrdisable)
236 #define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
237 #define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */
238 #define OHCI_INTR_SF (1 << 2) /* start frame */
239 #define OHCI_INTR_RD (1 << 3) /* resume detect */
240 #define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
241 #define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
242 #define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
243 #define OHCI_INTR_OC (1 << 30) /* ownership change */
244 #define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */
247 /* Virtual Root HUB */
248 struct virt_root_hub {
249 int devnum; /* Address of Root Hub endpoint */
250 void *dev; /* was urb */
256 /* USB HUB CONSTANTS (not OHCI-specific; see hub.h) */
258 /* destination of request */
259 #define RH_INTERFACE 0x01
260 #define RH_ENDPOINT 0x02
261 #define RH_OTHER 0x03
263 #define RH_CLASS 0x20
264 #define RH_VENDOR 0x40
266 /* Requests: bRequest << 8 | bmRequestType */
267 #define RH_GET_STATUS 0x0080
268 #define RH_CLEAR_FEATURE 0x0100
269 #define RH_SET_FEATURE 0x0300
270 #define RH_SET_ADDRESS 0x0500
271 #define RH_GET_DESCRIPTOR 0x0680
272 #define RH_SET_DESCRIPTOR 0x0700
273 #define RH_GET_CONFIGURATION 0x0880
274 #define RH_SET_CONFIGURATION 0x0900
275 #define RH_GET_STATE 0x0280
276 #define RH_GET_INTERFACE 0x0A80
277 #define RH_SET_INTERFACE 0x0B00
278 #define RH_SYNC_FRAME 0x0C80
279 /* Our Vendor Specific Request */
280 #define RH_SET_EP 0x2000
283 /* Hub port features */
284 #define RH_PORT_CONNECTION 0x00
285 #define RH_PORT_ENABLE 0x01
286 #define RH_PORT_SUSPEND 0x02
287 #define RH_PORT_OVER_CURRENT 0x03
288 #define RH_PORT_RESET 0x04
289 #define RH_PORT_POWER 0x08
290 #define RH_PORT_LOW_SPEED 0x09
292 #define RH_C_PORT_CONNECTION 0x10
293 #define RH_C_PORT_ENABLE 0x11
294 #define RH_C_PORT_SUSPEND 0x12
295 #define RH_C_PORT_OVER_CURRENT 0x13
296 #define RH_C_PORT_RESET 0x14
299 #define RH_C_HUB_LOCAL_POWER 0x00
300 #define RH_C_HUB_OVER_CURRENT 0x01
302 #define RH_DEVICE_REMOTE_WAKEUP 0x00
303 #define RH_ENDPOINT_STALL 0x01
306 #define RH_REQ_ERR -1
310 /* OHCI ROOT HUB REGISTER MASKS */
312 /* roothub.portstatus [i] bits */
313 #define RH_PS_CCS 0x00000001 /* current connect status */
314 #define RH_PS_PES 0x00000002 /* port enable status*/
315 #define RH_PS_PSS 0x00000004 /* port suspend status */
316 #define RH_PS_POCI 0x00000008 /* port over current indicator */
317 #define RH_PS_PRS 0x00000010 /* port reset status */
318 #define RH_PS_PPS 0x00000100 /* port power status */
319 #define RH_PS_LSDA 0x00000200 /* low speed device attached */
320 #define RH_PS_CSC 0x00010000 /* connect status change */
321 #define RH_PS_PESC 0x00020000 /* port enable status change */
322 #define RH_PS_PSSC 0x00040000 /* port suspend status change */
323 #define RH_PS_OCIC 0x00080000 /* over current indicator change */
324 #define RH_PS_PRSC 0x00100000 /* port reset status change */
326 /* roothub.status bits */
327 #define RH_HS_LPS 0x00000001 /* local power status */
328 #define RH_HS_OCI 0x00000002 /* over current indicator */
329 #define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
330 #define RH_HS_LPSC 0x00010000 /* local power status change */
331 #define RH_HS_OCIC 0x00020000 /* over current indicator change */
332 #define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */
334 /* roothub.b masks */
335 #define RH_B_DR 0x0000ffff /* device removable flags */
336 #define RH_B_PPCM 0xffff0000 /* port power control mask */
338 /* roothub.a masks */
339 #define RH_A_NDP (0xff << 0) /* number of downstream ports */
340 #define RH_A_PSM (1 << 8) /* power switching mode */
341 #define RH_A_NPS (1 << 9) /* no power switching */
342 #define RH_A_DT (1 << 10) /* device type (mbz) */
343 #define RH_A_OCPM (1 << 11) /* over current protection mode */
344 #define RH_A_NOCP (1 << 12) /* no over current protection */
345 #define RH_A_POTPGT (0xff << 24) /* power on to power good time */
352 __u16 length; /* number of tds associated with this request */
353 __u16 td_cnt; /* number of tds already serviced */
354 struct usb_device *dev;
357 void *transfer_buffer;
358 int transfer_buffer_length;
362 td_t *td[N_URB_TD]; /* list pointer to all corresponding TDs associated with this request */
366 #define NUM_EDS 8 /* num of preallocated endpoint descriptors */
368 #define NUM_TD 64 /* we need more TDs than EDs */
370 #define NUM_INT_DEVS 8 /* num of ohci_dev structs for int endpoints */
372 typedef struct ohci_device {
373 ed_t ed[NUM_EDS] __aligned(ED_ALIGNMENT);
374 td_t tds[NUM_TD] __aligned(TD_ALIGNMENT);
380 * This is the full ohci controller description
382 * Note how the "proper" USB information is just
383 * a subset of what the full implementation needs. (Linus)
387 typedef struct ohci {
388 /* this allocates EDs for all possible endpoints */
389 struct ohci_device ohci_dev __aligned(TD_ALIGNMENT);
390 struct ohci_device int_dev[NUM_INT_DEVS] __aligned(TD_ALIGNMENT);
391 struct ohci_hcca *hcca; /* hcca */
392 /*dma_addr_t hcca_dma;*/
395 int disabled; /* e.g. got a UE, we're hung */
397 unsigned long flags; /* for HC bugs */
399 struct ohci_regs *regs; /* OHCI controller's memory */
401 int ohci_int_load[32]; /* load of the 32 Interrupt Chains (for load balancing)*/
402 ed_t *ed_rm_list[2]; /* lists of all endpoints to be removed */
403 ed_t *ed_bulktail; /* last endpoint of bulk list */
404 ed_t *ed_controltail; /* last endpoint of control list */
406 __u32 hc_control; /* copy of the hc control reg */
407 struct usb_device *dev[32];
408 struct virt_root_hub rh;
410 const char *slot_name;
414 extern struct dm_usb_ops ohci_usb_ops;
416 int ohci_register(struct udevice *dev, struct ohci_regs *regs);
417 int ohci_deregister(struct udevice *dev);