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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 | #ifndef __LINUX_UHCI_H #define __LINUX_UHCI_H /* $Id: usb-uhci.h,v 1.54 2000/04/02 19:55:53 acher Exp $ */ #define MODNAME "usb-uhci" #define UHCI_LATENCY_TIMER 0 static __inline__ void uhci_wait_ms(unsigned int ms) { if(!in_interrupt()) { current->state = TASK_UNINTERRUPTIBLE; schedule_timeout(1 + ms * HZ / 1000); } else mdelay(ms); } /* Command register */ #define USBCMD 0 #define USBCMD_RS 0x0001 /* Run/Stop */ #define USBCMD_HCRESET 0x0002 /* Host reset */ #define USBCMD_GRESET 0x0004 /* Global reset */ #define USBCMD_EGSM 0x0008 /* Global Suspend Mode */ #define USBCMD_FGR 0x0010 /* Force Global Resume */ #define USBCMD_SWDBG 0x0020 /* SW Debug mode */ #define USBCMD_CF 0x0040 /* Config Flag (sw only) */ #define USBCMD_MAXP 0x0080 /* Max Packet (0 = 32, 1 = 64) */ /* Status register */ #define USBSTS 2 #define USBSTS_USBINT 0x0001 /* Interrupt due to IOC */ #define USBSTS_ERROR 0x0002 /* Interrupt due to error */ #define USBSTS_RD 0x0004 /* Resume Detect */ #define USBSTS_HSE 0x0008 /* Host System Error - basically PCI problems */ #define USBSTS_HCPE 0x0010 /* Host Controller Process Error - the scripts were buggy */ #define USBSTS_HCH 0x0020 /* HC Halted */ /* Interrupt enable register */ #define USBINTR 4 #define USBINTR_TIMEOUT 0x0001 /* Timeout/CRC error enable */ #define USBINTR_RESUME 0x0002 /* Resume interrupt enable */ #define USBINTR_IOC 0x0004 /* Interrupt On Complete enable */ #define USBINTR_SP 0x0008 /* Short packet interrupt enable */ #define USBFRNUM 6 #define USBFLBASEADD 8 #define USBSOF 12 /* USB port status and control registers */ #define USBPORTSC1 16 #define USBPORTSC2 18 #define USBPORTSC_CCS 0x0001 /* Current Connect Status ("device present") */ #define USBPORTSC_CSC 0x0002 /* Connect Status Change */ #define USBPORTSC_PE 0x0004 /* Port Enable */ #define USBPORTSC_PEC 0x0008 /* Port Enable Change */ #define USBPORTSC_LS 0x0030 /* Line Status */ #define USBPORTSC_RD 0x0040 /* Resume Detect */ #define USBPORTSC_LSDA 0x0100 /* Low Speed Device Attached */ #define USBPORTSC_PR 0x0200 /* Port Reset */ #define USBPORTSC_SUSP 0x1000 /* Suspend */ /* Legacy support register */ #define USBLEGSUP 0xc0 #define USBLEGSUP_DEFAULT 0x2000 /* only PIRQ enable set */ #define UHCI_NULL_DATA_SIZE 0x7ff /* for UHCI controller TD */ #define UHCI_PID 0xff /* PID MASK */ #define UHCI_PTR_BITS 0x000F #define UHCI_PTR_TERM 0x0001 #define UHCI_PTR_QH 0x0002 #define UHCI_PTR_DEPTH 0x0004 #define UHCI_NUMFRAMES 1024 /* in the frame list [array] */ #define UHCI_MAX_SOF_NUMBER 2047 /* in an SOF packet */ #define CAN_SCHEDULE_FRAMES 1000 /* how far future frames can be scheduled */ /* * for TD <status>: */ #define TD_CTRL_SPD (1 << 29) /* Short Packet Detect */ #define TD_CTRL_C_ERR_MASK (3 << 27) /* Error Counter bits */ #define TD_CTRL_LS (1 << 26) /* Low Speed Device */ #define TD_CTRL_IOS (1 << 25) /* Isochronous Select */ #define TD_CTRL_IOC (1 << 24) /* Interrupt on Complete */ #define TD_CTRL_ACTIVE (1 << 23) /* TD Active */ #define TD_CTRL_STALLED (1 << 22) /* TD Stalled */ #define TD_CTRL_DBUFERR (1 << 21) /* Data Buffer Error */ #define TD_CTRL_BABBLE (1 << 20) /* Babble Detected */ #define TD_CTRL_NAK (1 << 19) /* NAK Received */ #define TD_CTRL_CRCTIMEO (1 << 18) /* CRC/Time Out Error */ #define TD_CTRL_BITSTUFF (1 << 17) /* Bit Stuff Error */ #define TD_CTRL_ACTLEN_MASK 0x7ff /* actual length, encoded as n - 1 */ #define TD_CTRL_ANY_ERROR (TD_CTRL_STALLED | TD_CTRL_DBUFERR | \ TD_CTRL_BABBLE | TD_CTRL_CRCTIME | TD_CTRL_BITSTUFF) #define uhci_status_bits(ctrl_sts) (ctrl_sts & 0xFE0000) #define uhci_actual_length(ctrl_sts) ((ctrl_sts + 1) & TD_CTRL_ACTLEN_MASK) /* 1-based */ #define uhci_ptr_to_virt(x) bus_to_virt(x & ~UHCI_PTR_BITS) /* * for TD <flags>: */ #define UHCI_TD_REMOVE 0x0001 /* Remove when done */ /* * for TD <info>: (a.k.a. Token) */ #define TD_TOKEN_TOGGLE 19 #define uhci_maxlen(token) ((token) >> 21) #define uhci_toggle(token) (((token) >> TD_TOKEN_TOGGLE) & 1) #define uhci_endpoint(token) (((token) >> 15) & 0xf) #define uhci_devaddr(token) (((token) >> 8) & 0x7f) #define uhci_devep(token) (((token) >> 8) & 0x7ff) #define uhci_packetid(token) ((token) & 0xff) #define uhci_packetout(token) (uhci_packetid(token) != USB_PID_IN) #define uhci_packetin(token) (uhci_packetid(token) == USB_PID_IN) /* ------------------------------------------------------------------------------------ New TD/QH-structures ------------------------------------------------------------------------------------ */ typedef enum { TD_TYPE, QH_TYPE } uhci_desc_type_t; typedef struct { __u32 link; __u32 status; __u32 info; __u32 buffer; } uhci_td_t, *puhci_td_t; typedef struct { __u32 head; __u32 element; /* Queue element pointer */ } uhci_qh_t, *puhci_qh_t; typedef struct { union { uhci_td_t td; uhci_qh_t qh; } hw; uhci_desc_type_t type; struct list_head horizontal; struct list_head vertical; struct list_head desc_list; int last_used; } uhci_desc_t, *puhci_desc_t; typedef struct { struct list_head desc_list; // list pointer to all corresponding TDs/QHs associated with this request unsigned long started; urb_t *next_queued_urb; // next queued urb for this EP urb_t *prev_queued_urb; uhci_desc_t *bottom_qh; uhci_desc_t *next_qh; // next helper QH char use_loop; char short_control_packet; } urb_priv_t, *purb_priv_t; struct virt_root_hub { int devnum; /* Address of Root Hub endpoint */ void *urb; void *int_addr; int send; int interval; int numports; int c_p_r[8]; struct timer_list rh_int_timer; }; typedef struct uhci { int irq; unsigned int io_addr; unsigned int io_size; unsigned int maxports; int running; int apm_state; struct uhci *next; // chain of uhci device contexts struct list_head urb_list; // list of all pending urbs spinlock_t urb_list_lock; // lock to keep consistency int unlink_urb_done; atomic_t avoid_bulk; struct usb_bus *bus; // our bus __u32 *framelist; uhci_desc_t **iso_td; uhci_desc_t *int_chain[8]; uhci_desc_t *ls_control_chain; uhci_desc_t *control_chain; uhci_desc_t *bulk_chain; uhci_desc_t *chain_end; uhci_desc_t *td1ms; uhci_desc_t *td32ms; struct list_head free_desc; spinlock_t qh_lock; spinlock_t td_lock; struct virt_root_hub rh; //private data of the virtual root hub int loop_usage; // URBs using bandwidth reclamation struct list_head urb_unlinked; // list of all unlinked urbs long timeout_check; int timeout_urbs; struct pci_dev *uhci_pci; } uhci_t, *puhci_t; #define MAKE_TD_ADDR(a) (virt_to_bus(a)&~UHCI_PTR_QH) #define MAKE_QH_ADDR(a) (virt_to_bus(a)|UHCI_PTR_QH) #define UHCI_GET_CURRENT_FRAME(uhci) (inw ((uhci)->io_addr + USBFRNUM)) /* ------------------------------------------------------------------------------------ Virtual Root HUB ------------------------------------------------------------------------------------ */ /* destination of request */ #define RH_INTERFACE 0x01 #define RH_ENDPOINT 0x02 #define RH_OTHER 0x03 #define RH_CLASS 0x20 #define RH_VENDOR 0x40 /* Requests: bRequest << 8 | bmRequestType */ #define RH_GET_STATUS 0x0080 #define RH_CLEAR_FEATURE 0x0100 #define RH_SET_FEATURE 0x0300 #define RH_SET_ADDRESS 0x0500 #define RH_GET_DESCRIPTOR 0x0680 #define RH_SET_DESCRIPTOR 0x0700 #define RH_GET_CONFIGURATION 0x0880 #define RH_SET_CONFIGURATION 0x0900 #define RH_GET_STATE 0x0280 #define RH_GET_INTERFACE 0x0A80 #define RH_SET_INTERFACE 0x0B00 #define RH_SYNC_FRAME 0x0C80 /* Our Vendor Specific Request */ #define RH_SET_EP 0x2000 /* Hub port features */ #define RH_PORT_CONNECTION 0x00 #define RH_PORT_ENABLE 0x01 #define RH_PORT_SUSPEND 0x02 #define RH_PORT_OVER_CURRENT 0x03 #define RH_PORT_RESET 0x04 #define RH_PORT_POWER 0x08 #define RH_PORT_LOW_SPEED 0x09 #define RH_C_PORT_CONNECTION 0x10 #define RH_C_PORT_ENABLE 0x11 #define RH_C_PORT_SUSPEND 0x12 #define RH_C_PORT_OVER_CURRENT 0x13 #define RH_C_PORT_RESET 0x14 /* Hub features */ #define RH_C_HUB_LOCAL_POWER 0x00 #define RH_C_HUB_OVER_CURRENT 0x01 #define RH_DEVICE_REMOTE_WAKEUP 0x00 #define RH_ENDPOINT_STALL 0x01 /* Our Vendor Specific feature */ #define RH_REMOVE_EP 0x00 #define RH_ACK 0x01 #define RH_REQ_ERR -1 #define RH_NACK 0x00 #define min(a,b) (((a)<(b))?(a):(b)) #endif |