3 * xHCI host controller driver
5 * Copyright (C) 2008 Intel Corp.
8 * Some code borrowed from the Linux EHCI driver.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #ifndef __LINUX_XHCI_HCD_H
25 #define __LINUX_XHCI_HCD_H
27 #include <linux/usb.h>
28 #include <linux/timer.h>
29 #include <linux/kernel.h>
30 #include <linux/usb/hcd.h>
31 #include <linux/io-64-nonatomic-lo-hi.h>
33 /* Code sharing between pci-quirks and xhci hcd */
34 #include "xhci-ext-caps.h"
35 #include "pci-quirks.h"
37 /* xHCI PCI Configuration Registers */
38 #define XHCI_SBRN_OFFSET (0x60)
40 /* Max number of USB devices for any host controller - limit in section 6.1 */
41 #define MAX_HC_SLOTS 256
42 /* Section 5.3.3 - MaxPorts */
43 #define MAX_HC_PORTS 127
46 * xHCI register interface.
47 * This corresponds to the eXtensible Host Controller Interface (xHCI)
48 * Revision 0.95 specification
52 * struct xhci_cap_regs - xHCI Host Controller Capability Registers.
53 * @hc_capbase: length of the capabilities register and HC version number
54 * @hcs_params1: HCSPARAMS1 - Structural Parameters 1
55 * @hcs_params2: HCSPARAMS2 - Structural Parameters 2
56 * @hcs_params3: HCSPARAMS3 - Structural Parameters 3
57 * @hcc_params: HCCPARAMS - Capability Parameters
58 * @db_off: DBOFF - Doorbell array offset
59 * @run_regs_off: RTSOFF - Runtime register space offset
60 * @hcc_params2: HCCPARAMS2 Capability Parameters 2, xhci 1.1 only
62 struct xhci_cap_regs {
70 __le32 hcc_params2; /* xhci 1.1 */
71 /* Reserved up to (CAPLENGTH - 0x1C) */
74 /* hc_capbase bitmasks */
75 /* bits 7:0 - how long is the Capabilities register */
76 #define HC_LENGTH(p) XHCI_HC_LENGTH(p)
78 #define HC_VERSION(p) (((p) >> 16) & 0xffff)
80 /* HCSPARAMS1 - hcs_params1 - bitmasks */
81 /* bits 0:7, Max Device Slots */
82 #define HCS_MAX_SLOTS(p) (((p) >> 0) & 0xff)
83 #define HCS_SLOTS_MASK 0xff
84 /* bits 8:18, Max Interrupters */
85 #define HCS_MAX_INTRS(p) (((p) >> 8) & 0x7ff)
86 /* bits 24:31, Max Ports - max value is 0x7F = 127 ports */
87 #define HCS_MAX_PORTS(p) (((p) >> 24) & 0x7f)
89 /* HCSPARAMS2 - hcs_params2 - bitmasks */
90 /* bits 0:3, frames or uframes that SW needs to queue transactions
91 * ahead of the HW to meet periodic deadlines */
92 #define HCS_IST(p) (((p) >> 0) & 0xf)
93 /* bits 4:7, max number of Event Ring segments */
94 #define HCS_ERST_MAX(p) (((p) >> 4) & 0xf)
95 /* bits 21:25 Hi 5 bits of Scratchpad buffers SW must allocate for the HW */
96 /* bit 26 Scratchpad restore - for save/restore HW state - not used yet */
97 /* bits 27:31 Lo 5 bits of Scratchpad buffers SW must allocate for the HW */
98 #define HCS_MAX_SCRATCHPAD(p) ((((p) >> 16) & 0x3e0) | (((p) >> 27) & 0x1f))
100 /* HCSPARAMS3 - hcs_params3 - bitmasks */
101 /* bits 0:7, Max U1 to U0 latency for the roothub ports */
102 #define HCS_U1_LATENCY(p) (((p) >> 0) & 0xff)
103 /* bits 16:31, Max U2 to U0 latency for the roothub ports */
104 #define HCS_U2_LATENCY(p) (((p) >> 16) & 0xffff)
106 /* HCCPARAMS - hcc_params - bitmasks */
107 /* true: HC can use 64-bit address pointers */
108 #define HCC_64BIT_ADDR(p) ((p) & (1 << 0))
109 /* true: HC can do bandwidth negotiation */
110 #define HCC_BANDWIDTH_NEG(p) ((p) & (1 << 1))
111 /* true: HC uses 64-byte Device Context structures
112 * FIXME 64-byte context structures aren't supported yet.
114 #define HCC_64BYTE_CONTEXT(p) ((p) & (1 << 2))
115 /* true: HC has port power switches */
116 #define HCC_PPC(p) ((p) & (1 << 3))
117 /* true: HC has port indicators */
118 #define HCS_INDICATOR(p) ((p) & (1 << 4))
119 /* true: HC has Light HC Reset Capability */
120 #define HCC_LIGHT_RESET(p) ((p) & (1 << 5))
121 /* true: HC supports latency tolerance messaging */
122 #define HCC_LTC(p) ((p) & (1 << 6))
123 /* true: no secondary Stream ID Support */
124 #define HCC_NSS(p) ((p) & (1 << 7))
125 /* true: HC supports Stopped - Short Packet */
126 #define HCC_SPC(p) ((p) & (1 << 9))
127 /* true: HC has Contiguous Frame ID Capability */
128 #define HCC_CFC(p) ((p) & (1 << 11))
129 /* Max size for Primary Stream Arrays - 2^(n+1), where n is bits 12:15 */
130 #define HCC_MAX_PSA(p) (1 << ((((p) >> 12) & 0xf) + 1))
131 /* Extended Capabilities pointer from PCI base - section 5.3.6 */
132 #define HCC_EXT_CAPS(p) XHCI_HCC_EXT_CAPS(p)
134 /* db_off bitmask - bits 0:1 reserved */
135 #define DBOFF_MASK (~0x3)
137 /* run_regs_off bitmask - bits 0:4 reserved */
138 #define RTSOFF_MASK (~0x1f)
140 /* HCCPARAMS2 - hcc_params2 - bitmasks */
141 /* true: HC supports U3 entry Capability */
142 #define HCC2_U3C(p) ((p) & (1 << 0))
143 /* true: HC supports Configure endpoint command Max exit latency too large */
144 #define HCC2_CMC(p) ((p) & (1 << 1))
145 /* true: HC supports Force Save context Capability */
146 #define HCC2_FSC(p) ((p) & (1 << 2))
147 /* true: HC supports Compliance Transition Capability */
148 #define HCC2_CTC(p) ((p) & (1 << 3))
149 /* true: HC support Large ESIT payload Capability > 48k */
150 #define HCC2_LEC(p) ((p) & (1 << 4))
151 /* true: HC support Configuration Information Capability */
152 #define HCC2_CIC(p) ((p) & (1 << 5))
153 /* true: HC support Extended TBC Capability, Isoc burst count > 65535 */
154 #define HCC2_ETC(p) ((p) & (1 << 6))
156 /* Number of registers per port */
157 #define NUM_PORT_REGS 4
165 * struct xhci_op_regs - xHCI Host Controller Operational Registers.
166 * @command: USBCMD - xHC command register
167 * @status: USBSTS - xHC status register
168 * @page_size: This indicates the page size that the host controller
169 * supports. If bit n is set, the HC supports a page size
170 * of 2^(n+12), up to a 128MB page size.
171 * 4K is the minimum page size.
172 * @cmd_ring: CRP - 64-bit Command Ring Pointer
173 * @dcbaa_ptr: DCBAAP - 64-bit Device Context Base Address Array Pointer
174 * @config_reg: CONFIG - Configure Register
175 * @port_status_base: PORTSCn - base address for Port Status and Control
176 * Each port has a Port Status and Control register,
177 * followed by a Port Power Management Status and Control
178 * register, a Port Link Info register, and a reserved
180 * @port_power_base: PORTPMSCn - base address for
181 * Port Power Management Status and Control
182 * @port_link_base: PORTLIn - base address for Port Link Info (current
183 * Link PM state and control) for USB 2.1 and USB 3.0
186 struct xhci_op_regs {
192 __le32 dev_notification;
194 /* rsvd: offset 0x20-2F */
198 /* rsvd: offset 0x3C-3FF */
199 __le32 reserved4[241];
200 /* port 1 registers, which serve as a base address for other ports */
201 __le32 port_status_base;
202 __le32 port_power_base;
203 __le32 port_link_base;
205 /* registers for ports 2-255 */
206 __le32 reserved6[NUM_PORT_REGS*254];
209 /* USBCMD - USB command - command bitmasks */
210 /* start/stop HC execution - do not write unless HC is halted*/
211 #define CMD_RUN XHCI_CMD_RUN
212 /* Reset HC - resets internal HC state machine and all registers (except
213 * PCI config regs). HC does NOT drive a USB reset on the downstream ports.
214 * The xHCI driver must reinitialize the xHC after setting this bit.
216 #define CMD_RESET (1 << 1)
217 /* Event Interrupt Enable - a '1' allows interrupts from the host controller */
218 #define CMD_EIE XHCI_CMD_EIE
219 /* Host System Error Interrupt Enable - get out-of-band signal for HC errors */
220 #define CMD_HSEIE XHCI_CMD_HSEIE
221 /* bits 4:6 are reserved (and should be preserved on writes). */
222 /* light reset (port status stays unchanged) - reset completed when this is 0 */
223 #define CMD_LRESET (1 << 7)
224 /* host controller save/restore state. */
225 #define CMD_CSS (1 << 8)
226 #define CMD_CRS (1 << 9)
227 /* Enable Wrap Event - '1' means xHC generates an event when MFINDEX wraps. */
228 #define CMD_EWE XHCI_CMD_EWE
229 /* MFINDEX power management - '1' means xHC can stop MFINDEX counter if all root
230 * hubs are in U3 (selective suspend), disconnect, disabled, or powered-off.
231 * '0' means the xHC can power it off if all ports are in the disconnect,
232 * disabled, or powered-off state.
234 #define CMD_PM_INDEX (1 << 11)
235 /* bit 14 Extended TBC Enable, changes Isoc TRB fields to support larger TBC */
236 #define CMD_ETE (1 << 14)
237 /* bits 15:31 are reserved (and should be preserved on writes). */
239 /* IMAN - Interrupt Management Register */
240 #define IMAN_IE (1 << 1)
241 #define IMAN_IP (1 << 0)
243 /* USBSTS - USB status - status bitmasks */
244 /* HC not running - set to 1 when run/stop bit is cleared. */
245 #define STS_HALT XHCI_STS_HALT
246 /* serious error, e.g. PCI parity error. The HC will clear the run/stop bit. */
247 #define STS_FATAL (1 << 2)
248 /* event interrupt - clear this prior to clearing any IP flags in IR set*/
249 #define STS_EINT (1 << 3)
250 /* port change detect */
251 #define STS_PORT (1 << 4)
252 /* bits 5:7 reserved and zeroed */
253 /* save state status - '1' means xHC is saving state */
254 #define STS_SAVE (1 << 8)
255 /* restore state status - '1' means xHC is restoring state */
256 #define STS_RESTORE (1 << 9)
257 /* true: save or restore error */
258 #define STS_SRE (1 << 10)
259 /* true: Controller Not Ready to accept doorbell or op reg writes after reset */
260 #define STS_CNR XHCI_STS_CNR
261 /* true: internal Host Controller Error - SW needs to reset and reinitialize */
262 #define STS_HCE (1 << 12)
263 /* bits 13:31 reserved and should be preserved */
266 * DNCTRL - Device Notification Control Register - dev_notification bitmasks
267 * Generate a device notification event when the HC sees a transaction with a
268 * notification type that matches a bit set in this bit field.
270 #define DEV_NOTE_MASK (0xffff)
271 #define ENABLE_DEV_NOTE(x) (1 << (x))
272 /* Most of the device notification types should only be used for debug.
273 * SW does need to pay attention to function wake notifications.
275 #define DEV_NOTE_FWAKE ENABLE_DEV_NOTE(1)
277 /* CRCR - Command Ring Control Register - cmd_ring bitmasks */
278 /* bit 0 is the command ring cycle state */
279 /* stop ring operation after completion of the currently executing command */
280 #define CMD_RING_PAUSE (1 << 1)
281 /* stop ring immediately - abort the currently executing command */
282 #define CMD_RING_ABORT (1 << 2)
283 /* true: command ring is running */
284 #define CMD_RING_RUNNING (1 << 3)
285 /* bits 4:5 reserved and should be preserved */
286 /* Command Ring pointer - bit mask for the lower 32 bits. */
287 #define CMD_RING_RSVD_BITS (0x3f)
289 /* CONFIG - Configure Register - config_reg bitmasks */
290 /* bits 0:7 - maximum number of device slots enabled (NumSlotsEn) */
291 #define MAX_DEVS(p) ((p) & 0xff)
292 /* bit 8: U3 Entry Enabled, assert PLC when root port enters U3, xhci 1.1 */
293 #define CONFIG_U3E (1 << 8)
294 /* bit 9: Configuration Information Enable, xhci 1.1 */
295 #define CONFIG_CIE (1 << 9)
296 /* bits 10:31 - reserved and should be preserved */
298 /* PORTSC - Port Status and Control Register - port_status_base bitmasks */
299 /* true: device connected */
300 #define PORT_CONNECT (1 << 0)
301 /* true: port enabled */
302 #define PORT_PE (1 << 1)
303 /* bit 2 reserved and zeroed */
304 /* true: port has an over-current condition */
305 #define PORT_OC (1 << 3)
306 /* true: port reset signaling asserted */
307 #define PORT_RESET (1 << 4)
308 /* Port Link State - bits 5:8
309 * A read gives the current link PM state of the port,
310 * a write with Link State Write Strobe set sets the link state.
312 #define PORT_PLS_MASK (0xf << 5)
313 #define XDEV_U0 (0x0 << 5)
314 #define XDEV_U2 (0x2 << 5)
315 #define XDEV_U3 (0x3 << 5)
316 #define XDEV_INACTIVE (0x6 << 5)
317 #define XDEV_POLLING (0x7 << 5)
318 #define XDEV_COMP_MODE (0xa << 5)
319 #define XDEV_RESUME (0xf << 5)
320 /* true: port has power (see HCC_PPC) */
321 #define PORT_POWER (1 << 9)
322 /* bits 10:13 indicate device speed:
323 * 0 - undefined speed - port hasn't be initialized by a reset yet
330 #define DEV_SPEED_MASK (0xf << 10)
331 #define XDEV_FS (0x1 << 10)
332 #define XDEV_LS (0x2 << 10)
333 #define XDEV_HS (0x3 << 10)
334 #define XDEV_SS (0x4 << 10)
335 #define XDEV_SSP (0x5 << 10)
336 #define DEV_UNDEFSPEED(p) (((p) & DEV_SPEED_MASK) == (0x0<<10))
337 #define DEV_FULLSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_FS)
338 #define DEV_LOWSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_LS)
339 #define DEV_HIGHSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_HS)
340 #define DEV_SUPERSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_SS)
341 #define DEV_SUPERSPEEDPLUS(p) (((p) & DEV_SPEED_MASK) == XDEV_SSP)
342 #define DEV_SUPERSPEED_ANY(p) (((p) & DEV_SPEED_MASK) >= XDEV_SS)
343 #define DEV_PORT_SPEED(p) (((p) >> 10) & 0x0f)
345 /* Bits 20:23 in the Slot Context are the speed for the device */
346 #define SLOT_SPEED_FS (XDEV_FS << 10)
347 #define SLOT_SPEED_LS (XDEV_LS << 10)
348 #define SLOT_SPEED_HS (XDEV_HS << 10)
349 #define SLOT_SPEED_SS (XDEV_SS << 10)
350 #define SLOT_SPEED_SSP (XDEV_SSP << 10)
351 /* Port Indicator Control */
352 #define PORT_LED_OFF (0 << 14)
353 #define PORT_LED_AMBER (1 << 14)
354 #define PORT_LED_GREEN (2 << 14)
355 #define PORT_LED_MASK (3 << 14)
356 /* Port Link State Write Strobe - set this when changing link state */
357 #define PORT_LINK_STROBE (1 << 16)
358 /* true: connect status change */
359 #define PORT_CSC (1 << 17)
360 /* true: port enable change */
361 #define PORT_PEC (1 << 18)
362 /* true: warm reset for a USB 3.0 device is done. A "hot" reset puts the port
363 * into an enabled state, and the device into the default state. A "warm" reset
364 * also resets the link, forcing the device through the link training sequence.
365 * SW can also look at the Port Reset register to see when warm reset is done.
367 #define PORT_WRC (1 << 19)
368 /* true: over-current change */
369 #define PORT_OCC (1 << 20)
370 /* true: reset change - 1 to 0 transition of PORT_RESET */
371 #define PORT_RC (1 << 21)
372 /* port link status change - set on some port link state transitions:
374 * ------------------------------------------------------------------------------
375 * - U3 to Resume Wakeup signaling from a device
376 * - Resume to Recovery to U0 USB 3.0 device resume
377 * - Resume to U0 USB 2.0 device resume
378 * - U3 to Recovery to U0 Software resume of USB 3.0 device complete
379 * - U3 to U0 Software resume of USB 2.0 device complete
380 * - U2 to U0 L1 resume of USB 2.1 device complete
381 * - U0 to U0 (???) L1 entry rejection by USB 2.1 device
382 * - U0 to disabled L1 entry error with USB 2.1 device
383 * - Any state to inactive Error on USB 3.0 port
385 #define PORT_PLC (1 << 22)
386 /* port configure error change - port failed to configure its link partner */
387 #define PORT_CEC (1 << 23)
388 /* Cold Attach Status - xHC can set this bit to report device attached during
389 * Sx state. Warm port reset should be perfomed to clear this bit and move port
390 * to connected state.
392 #define PORT_CAS (1 << 24)
393 /* wake on connect (enable) */
394 #define PORT_WKCONN_E (1 << 25)
395 /* wake on disconnect (enable) */
396 #define PORT_WKDISC_E (1 << 26)
397 /* wake on over-current (enable) */
398 #define PORT_WKOC_E (1 << 27)
399 /* bits 28:29 reserved */
400 /* true: device is non-removable - for USB 3.0 roothub emulation */
401 #define PORT_DEV_REMOVE (1 << 30)
402 /* Initiate a warm port reset - complete when PORT_WRC is '1' */
403 #define PORT_WR (1 << 31)
405 /* We mark duplicate entries with -1 */
406 #define DUPLICATE_ENTRY ((u8)(-1))
408 /* Port Power Management Status and Control - port_power_base bitmasks */
409 /* Inactivity timer value for transitions into U1, in microseconds.
410 * Timeout can be up to 127us. 0xFF means an infinite timeout.
412 #define PORT_U1_TIMEOUT(p) ((p) & 0xff)
413 #define PORT_U1_TIMEOUT_MASK 0xff
414 /* Inactivity timer value for transitions into U2 */
415 #define PORT_U2_TIMEOUT(p) (((p) & 0xff) << 8)
416 #define PORT_U2_TIMEOUT_MASK (0xff << 8)
417 /* Bits 24:31 for port testing */
419 /* USB2 Protocol PORTSPMSC */
420 #define PORT_L1S_MASK 7
421 #define PORT_L1S_SUCCESS 1
422 #define PORT_RWE (1 << 3)
423 #define PORT_HIRD(p) (((p) & 0xf) << 4)
424 #define PORT_HIRD_MASK (0xf << 4)
425 #define PORT_L1DS_MASK (0xff << 8)
426 #define PORT_L1DS(p) (((p) & 0xff) << 8)
427 #define PORT_HLE (1 << 16)
429 /* USB3 Protocol PORTLI Port Link Information */
430 #define PORT_RX_LANES(p) (((p) >> 16) & 0xf)
431 #define PORT_TX_LANES(p) (((p) >> 20) & 0xf)
433 /* USB2 Protocol PORTHLPMC */
434 #define PORT_HIRDM(p)((p) & 3)
435 #define PORT_L1_TIMEOUT(p)(((p) & 0xff) << 2)
436 #define PORT_BESLD(p)(((p) & 0xf) << 10)
438 /* use 512 microseconds as USB2 LPM L1 default timeout. */
439 #define XHCI_L1_TIMEOUT 512
441 /* Set default HIRD/BESL value to 4 (350/400us) for USB2 L1 LPM resume latency.
442 * Safe to use with mixed HIRD and BESL systems (host and device) and is used
443 * by other operating systems.
445 * XHCI 1.0 errata 8/14/12 Table 13 notes:
446 * "Software should choose xHC BESL/BESLD field values that do not violate a
447 * device's resume latency requirements,
448 * e.g. not program values > '4' if BLC = '1' and a HIRD device is attached,
449 * or not program values < '4' if BLC = '0' and a BESL device is attached.
451 #define XHCI_DEFAULT_BESL 4
454 * struct xhci_intr_reg - Interrupt Register Set
455 * @irq_pending: IMAN - Interrupt Management Register. Used to enable
456 * interrupts and check for pending interrupts.
457 * @irq_control: IMOD - Interrupt Moderation Register.
458 * Used to throttle interrupts.
459 * @erst_size: Number of segments in the Event Ring Segment Table (ERST).
460 * @erst_base: ERST base address.
461 * @erst_dequeue: Event ring dequeue pointer.
463 * Each interrupter (defined by a MSI-X vector) has an event ring and an Event
464 * Ring Segment Table (ERST) associated with it. The event ring is comprised of
465 * multiple segments of the same size. The HC places events on the ring and
466 * "updates the Cycle bit in the TRBs to indicate to software the current
467 * position of the Enqueue Pointer." The HCD (Linux) processes those events and
468 * updates the dequeue pointer.
470 struct xhci_intr_reg {
479 /* irq_pending bitmasks */
480 #define ER_IRQ_PENDING(p) ((p) & 0x1)
481 /* bits 2:31 need to be preserved */
482 /* THIS IS BUGGY - FIXME - IP IS WRITE 1 TO CLEAR */
483 #define ER_IRQ_CLEAR(p) ((p) & 0xfffffffe)
484 #define ER_IRQ_ENABLE(p) ((ER_IRQ_CLEAR(p)) | 0x2)
485 #define ER_IRQ_DISABLE(p) ((ER_IRQ_CLEAR(p)) & ~(0x2))
487 /* irq_control bitmasks */
488 /* Minimum interval between interrupts (in 250ns intervals). The interval
489 * between interrupts will be longer if there are no events on the event ring.
490 * Default is 4000 (1 ms).
492 #define ER_IRQ_INTERVAL_MASK (0xffff)
493 /* Counter used to count down the time to the next interrupt - HW use only */
494 #define ER_IRQ_COUNTER_MASK (0xffff << 16)
496 /* erst_size bitmasks */
497 /* Preserve bits 16:31 of erst_size */
498 #define ERST_SIZE_MASK (0xffff << 16)
500 /* erst_dequeue bitmasks */
501 /* Dequeue ERST Segment Index (DESI) - Segment number (or alias)
502 * where the current dequeue pointer lies. This is an optional HW hint.
504 #define ERST_DESI_MASK (0x7)
505 /* Event Handler Busy (EHB) - is the event ring scheduled to be serviced by
506 * a work queue (or delayed service routine)?
508 #define ERST_EHB (1 << 3)
509 #define ERST_PTR_MASK (0xf)
512 * struct xhci_run_regs
514 * MFINDEX - current microframe number
516 * Section 5.5 Host Controller Runtime Registers:
517 * "Software should read and write these registers using only Dword (32 bit)
518 * or larger accesses"
520 struct xhci_run_regs {
521 __le32 microframe_index;
523 struct xhci_intr_reg ir_set[128];
527 * struct doorbell_array
529 * Bits 0 - 7: Endpoint target
531 * Bits 16 - 31: Stream ID
535 struct xhci_doorbell_array {
536 __le32 doorbell[256];
539 #define DB_VALUE(ep, stream) ((((ep) + 1) & 0xff) | ((stream) << 16))
540 #define DB_VALUE_HOST 0x00000000
543 * struct xhci_protocol_caps
544 * @revision: major revision, minor revision, capability ID,
545 * and next capability pointer.
546 * @name_string: Four ASCII characters to say which spec this xHC
547 * follows, typically "USB ".
548 * @port_info: Port offset, count, and protocol-defined information.
550 struct xhci_protocol_caps {
556 #define XHCI_EXT_PORT_MAJOR(x) (((x) >> 24) & 0xff)
557 #define XHCI_EXT_PORT_MINOR(x) (((x) >> 16) & 0xff)
558 #define XHCI_EXT_PORT_PSIC(x) (((x) >> 28) & 0x0f)
559 #define XHCI_EXT_PORT_OFF(x) ((x) & 0xff)
560 #define XHCI_EXT_PORT_COUNT(x) (((x) >> 8) & 0xff)
562 #define XHCI_EXT_PORT_PSIV(x) (((x) >> 0) & 0x0f)
563 #define XHCI_EXT_PORT_PSIE(x) (((x) >> 4) & 0x03)
564 #define XHCI_EXT_PORT_PLT(x) (((x) >> 6) & 0x03)
565 #define XHCI_EXT_PORT_PFD(x) (((x) >> 8) & 0x01)
566 #define XHCI_EXT_PORT_LP(x) (((x) >> 14) & 0x03)
567 #define XHCI_EXT_PORT_PSIM(x) (((x) >> 16) & 0xffff)
569 #define PLT_MASK (0x03 << 6)
570 #define PLT_SYM (0x00 << 6)
571 #define PLT_ASYM_RX (0x02 << 6)
572 #define PLT_ASYM_TX (0x03 << 6)
575 * struct xhci_container_ctx
576 * @type: Type of context. Used to calculated offsets to contained contexts.
577 * @size: Size of the context data
578 * @bytes: The raw context data given to HW
579 * @dma: dma address of the bytes
581 * Represents either a Device or Input context. Holds a pointer to the raw
582 * memory used for the context (bytes) and dma address of it (dma).
584 struct xhci_container_ctx {
586 #define XHCI_CTX_TYPE_DEVICE 0x1
587 #define XHCI_CTX_TYPE_INPUT 0x2
596 * struct xhci_slot_ctx
597 * @dev_info: Route string, device speed, hub info, and last valid endpoint
598 * @dev_info2: Max exit latency for device number, root hub port number
599 * @tt_info: tt_info is used to construct split transaction tokens
600 * @dev_state: slot state and device address
602 * Slot Context - section 6.2.1.1. This assumes the HC uses 32-byte context
603 * structures. If the HC uses 64-byte contexts, there is an additional 32 bytes
604 * reserved at the end of the slot context for HC internal use.
606 struct xhci_slot_ctx {
611 /* offset 0x10 to 0x1f reserved for HC internal use */
615 /* dev_info bitmasks */
616 /* Route String - 0:19 */
617 #define ROUTE_STRING_MASK (0xfffff)
618 /* Device speed - values defined by PORTSC Device Speed field - 20:23 */
619 #define DEV_SPEED (0xf << 20)
620 /* bit 24 reserved */
621 /* Is this LS/FS device connected through a HS hub? - bit 25 */
622 #define DEV_MTT (0x1 << 25)
623 /* Set if the device is a hub - bit 26 */
624 #define DEV_HUB (0x1 << 26)
625 /* Index of the last valid endpoint context in this device context - 27:31 */
626 #define LAST_CTX_MASK (0x1f << 27)
627 #define LAST_CTX(p) ((p) << 27)
628 #define LAST_CTX_TO_EP_NUM(p) (((p) >> 27) - 1)
629 #define SLOT_FLAG (1 << 0)
630 #define EP0_FLAG (1 << 1)
632 /* dev_info2 bitmasks */
633 /* Max Exit Latency (ms) - worst case time to wake up all links in dev path */
634 #define MAX_EXIT (0xffff)
635 /* Root hub port number that is needed to access the USB device */
636 #define ROOT_HUB_PORT(p) (((p) & 0xff) << 16)
637 #define DEVINFO_TO_ROOT_HUB_PORT(p) (((p) >> 16) & 0xff)
638 /* Maximum number of ports under a hub device */
639 #define XHCI_MAX_PORTS(p) (((p) & 0xff) << 24)
641 /* tt_info bitmasks */
643 * TT Hub Slot ID - for low or full speed devices attached to a high-speed hub
644 * The Slot ID of the hub that isolates the high speed signaling from
645 * this low or full-speed device. '0' if attached to root hub port.
647 #define TT_SLOT (0xff)
649 * The number of the downstream facing port of the high-speed hub
650 * '0' if the device is not low or full speed.
652 #define TT_PORT (0xff << 8)
653 #define TT_THINK_TIME(p) (((p) & 0x3) << 16)
655 /* dev_state bitmasks */
656 /* USB device address - assigned by the HC */
657 #define DEV_ADDR_MASK (0xff)
658 /* bits 8:26 reserved */
660 #define SLOT_STATE (0x1f << 27)
661 #define GET_SLOT_STATE(p) (((p) & (0x1f << 27)) >> 27)
663 #define SLOT_STATE_DISABLED 0
664 #define SLOT_STATE_ENABLED SLOT_STATE_DISABLED
665 #define SLOT_STATE_DEFAULT 1
666 #define SLOT_STATE_ADDRESSED 2
667 #define SLOT_STATE_CONFIGURED 3
671 * @ep_info: endpoint state, streams, mult, and interval information.
672 * @ep_info2: information on endpoint type, max packet size, max burst size,
673 * error count, and whether the HC will force an event for all
675 * @deq: 64-bit ring dequeue pointer address. If the endpoint only
676 * defines one stream, this points to the endpoint transfer ring.
677 * Otherwise, it points to a stream context array, which has a
678 * ring pointer for each flow.
680 * Average TRB lengths for the endpoint ring and
681 * max payload within an Endpoint Service Interval Time (ESIT).
683 * Endpoint Context - section 6.2.1.2. This assumes the HC uses 32-byte context
684 * structures. If the HC uses 64-byte contexts, there is an additional 32 bytes
685 * reserved at the end of the endpoint context for HC internal use.
692 /* offset 0x14 - 0x1f reserved for HC internal use */
696 /* ep_info bitmasks */
698 * Endpoint State - bits 0:2
701 * 2 - halted due to halt condition - ok to manipulate endpoint ring
706 #define EP_STATE_MASK (0xf)
707 #define EP_STATE_DISABLED 0
708 #define EP_STATE_RUNNING 1
709 #define EP_STATE_HALTED 2
710 #define EP_STATE_STOPPED 3
711 #define EP_STATE_ERROR 4
712 #define GET_EP_CTX_STATE(ctx) (le32_to_cpu((ctx)->ep_info) & EP_STATE_MASK)
714 /* Mult - Max number of burtst within an interval, in EP companion desc. */
715 #define EP_MULT(p) (((p) & 0x3) << 8)
716 #define CTX_TO_EP_MULT(p) (((p) >> 8) & 0x3)
717 /* bits 10:14 are Max Primary Streams */
718 /* bit 15 is Linear Stream Array */
719 /* Interval - period between requests to an endpoint - 125u increments. */
720 #define EP_INTERVAL(p) (((p) & 0xff) << 16)
721 #define EP_INTERVAL_TO_UFRAMES(p) (1 << (((p) >> 16) & 0xff))
722 #define CTX_TO_EP_INTERVAL(p) (((p) >> 16) & 0xff)
723 #define EP_MAXPSTREAMS_MASK (0x1f << 10)
724 #define EP_MAXPSTREAMS(p) (((p) << 10) & EP_MAXPSTREAMS_MASK)
725 /* Endpoint is set up with a Linear Stream Array (vs. Secondary Stream Array) */
726 #define EP_HAS_LSA (1 << 15)
728 /* ep_info2 bitmasks */
730 * Force Event - generate transfer events for all TRBs for this endpoint
731 * This will tell the HC to ignore the IOC and ISP flags (for debugging only).
733 #define FORCE_EVENT (0x1)
734 #define ERROR_COUNT(p) (((p) & 0x3) << 1)
735 #define CTX_TO_EP_TYPE(p) (((p) >> 3) & 0x7)
736 #define EP_TYPE(p) ((p) << 3)
737 #define ISOC_OUT_EP 1
738 #define BULK_OUT_EP 2
745 /* bit 7 is Host Initiate Disable - for disabling stream selection */
746 #define MAX_BURST(p) (((p)&0xff) << 8)
747 #define CTX_TO_MAX_BURST(p) (((p) >> 8) & 0xff)
748 #define MAX_PACKET(p) (((p)&0xffff) << 16)
749 #define MAX_PACKET_MASK (0xffff << 16)
750 #define MAX_PACKET_DECODED(p) (((p) >> 16) & 0xffff)
752 /* tx_info bitmasks */
753 #define EP_AVG_TRB_LENGTH(p) ((p) & 0xffff)
754 #define EP_MAX_ESIT_PAYLOAD_LO(p) (((p) & 0xffff) << 16)
755 #define EP_MAX_ESIT_PAYLOAD_HI(p) ((((p) >> 16) & 0xff) << 24)
756 #define CTX_TO_MAX_ESIT_PAYLOAD(p) (((p) >> 16) & 0xffff)
759 #define EP_CTX_CYCLE_MASK (1 << 0)
760 #define SCTX_DEQ_MASK (~0xfL)
764 * struct xhci_input_control_context
765 * Input control context; see section 6.2.5.
767 * @drop_context: set the bit of the endpoint context you want to disable
768 * @add_context: set the bit of the endpoint context you want to enable
770 struct xhci_input_control_ctx {
776 #define EP_IS_ADDED(ctrl_ctx, i) \
777 (le32_to_cpu(ctrl_ctx->add_flags) & (1 << (i + 1)))
778 #define EP_IS_DROPPED(ctrl_ctx, i) \
779 (le32_to_cpu(ctrl_ctx->drop_flags) & (1 << (i + 1)))
781 /* Represents everything that is needed to issue a command on the command ring.
782 * It's useful to pre-allocate these for commands that cannot fail due to
783 * out-of-memory errors, like freeing streams.
785 struct xhci_command {
786 /* Input context for changing device state */
787 struct xhci_container_ctx *in_ctx;
790 /* If completion is null, no one is waiting on this command
791 * and the structure can be freed after the command completes.
793 struct completion *completion;
794 union xhci_trb *command_trb;
795 struct list_head cmd_list;
798 /* drop context bitmasks */
799 #define DROP_EP(x) (0x1 << x)
800 /* add context bitmasks */
801 #define ADD_EP(x) (0x1 << x)
803 struct xhci_stream_ctx {
804 /* 64-bit stream ring address, cycle state, and stream type */
806 /* offset 0x14 - 0x1f reserved for HC internal use */
810 /* Stream Context Types (section 6.4.1) - bits 3:1 of stream ctx deq ptr */
811 #define SCT_FOR_CTX(p) (((p) & 0x7) << 1)
812 /* Secondary stream array type, dequeue pointer is to a transfer ring */
814 /* Primary stream array type, dequeue pointer is to a transfer ring */
816 /* Dequeue pointer is for a secondary stream array (SSA) with 8 entries */
821 #define SCT_SSA_128 6
822 #define SCT_SSA_256 7
824 /* Assume no secondary streams for now */
825 struct xhci_stream_info {
826 struct xhci_ring **stream_rings;
827 /* Number of streams, including stream 0 (which drivers can't use) */
828 unsigned int num_streams;
829 /* The stream context array may be bigger than
830 * the number of streams the driver asked for
832 struct xhci_stream_ctx *stream_ctx_array;
833 unsigned int num_stream_ctxs;
834 dma_addr_t ctx_array_dma;
835 /* For mapping physical TRB addresses to segments in stream rings */
836 struct radix_tree_root trb_address_map;
837 struct xhci_command *free_streams_command;
840 #define SMALL_STREAM_ARRAY_SIZE 256
841 #define MEDIUM_STREAM_ARRAY_SIZE 1024
843 /* Some Intel xHCI host controllers need software to keep track of the bus
844 * bandwidth. Keep track of endpoint info here. Each root port is allocated
845 * the full bus bandwidth. We must also treat TTs (including each port under a
846 * multi-TT hub) as a separate bandwidth domain. The direct memory interface
847 * (DMI) also limits the total bandwidth (across all domains) that can be used.
849 struct xhci_bw_info {
850 /* ep_interval is zero-based */
851 unsigned int ep_interval;
852 /* mult and num_packets are one-based */
854 unsigned int num_packets;
855 unsigned int max_packet_size;
856 unsigned int max_esit_payload;
860 /* "Block" sizes in bytes the hardware uses for different device speeds.
861 * The logic in this part of the hardware limits the number of bits the hardware
862 * can use, so must represent bandwidth in a less precise manner to mimic what
863 * the scheduler hardware computes.
870 /* Each device speed has a protocol overhead (CRC, bit stuffing, etc) associated
871 * with each byte transferred. SuperSpeed devices have an initial overhead to
872 * set up bursts. These are in blocks, see above. LS overhead has already been
873 * translated into FS blocks.
875 #define DMI_OVERHEAD 8
876 #define DMI_OVERHEAD_BURST 4
877 #define SS_OVERHEAD 8
878 #define SS_OVERHEAD_BURST 32
879 #define HS_OVERHEAD 26
880 #define FS_OVERHEAD 20
881 #define LS_OVERHEAD 128
882 /* The TTs need to claim roughly twice as much bandwidth (94 bytes per
883 * microframe ~= 24Mbps) of the HS bus as the devices can actually use because
884 * of overhead associated with split transfers crossing microframe boundaries.
885 * 31 blocks is pure protocol overhead.
887 #define TT_HS_OVERHEAD (31 + 94)
888 #define TT_DMI_OVERHEAD (25 + 12)
890 /* Bandwidth limits in blocks */
891 #define FS_BW_LIMIT 1285
892 #define TT_BW_LIMIT 1320
893 #define HS_BW_LIMIT 1607
894 #define SS_BW_LIMIT_IN 3906
895 #define DMI_BW_LIMIT_IN 3906
896 #define SS_BW_LIMIT_OUT 3906
897 #define DMI_BW_LIMIT_OUT 3906
899 /* Percentage of bus bandwidth reserved for non-periodic transfers */
900 #define FS_BW_RESERVED 10
901 #define HS_BW_RESERVED 20
902 #define SS_BW_RESERVED 10
904 struct xhci_virt_ep {
905 struct xhci_ring *ring;
906 /* Related to endpoints that are configured to use stream IDs only */
907 struct xhci_stream_info *stream_info;
908 /* Temporary storage in case the configure endpoint command fails and we
909 * have to restore the device state to the previous state
911 struct xhci_ring *new_ring;
912 unsigned int ep_state;
913 #define SET_DEQ_PENDING (1 << 0)
914 #define EP_HALTED (1 << 1) /* For stall handling */
915 #define EP_STOP_CMD_PENDING (1 << 2) /* For URB cancellation */
916 /* Transitioning the endpoint to using streams, don't enqueue URBs */
917 #define EP_GETTING_STREAMS (1 << 3)
918 #define EP_HAS_STREAMS (1 << 4)
919 /* Transitioning the endpoint to not using streams, don't enqueue URBs */
920 #define EP_GETTING_NO_STREAMS (1 << 5)
921 /* ---- Related to URB cancellation ---- */
922 struct list_head cancelled_td_list;
923 struct xhci_td *stopped_td;
924 unsigned int stopped_stream;
925 /* Watchdog timer for stop endpoint command to cancel URBs */
926 struct timer_list stop_cmd_timer;
927 struct xhci_hcd *xhci;
928 /* Dequeue pointer and dequeue segment for a submitted Set TR Dequeue
929 * command. We'll need to update the ring's dequeue segment and dequeue
930 * pointer after the command completes.
932 struct xhci_segment *queued_deq_seg;
933 union xhci_trb *queued_deq_ptr;
935 * Sometimes the xHC can not process isochronous endpoint ring quickly
936 * enough, and it will miss some isoc tds on the ring and generate
937 * a Missed Service Error Event.
938 * Set skip flag when receive a Missed Service Error Event and
939 * process the missed tds on the endpoint ring.
942 /* Bandwidth checking storage */
943 struct xhci_bw_info bw_info;
944 struct list_head bw_endpoint_list;
945 /* Isoch Frame ID checking storage */
947 /* Use new Isoch TRB layout needed for extended TBC support */
948 bool use_extended_tbc;
951 enum xhci_overhead_type {
952 LS_OVERHEAD_TYPE = 0,
957 struct xhci_interval_bw {
958 unsigned int num_packets;
959 /* Sorted by max packet size.
960 * Head of the list is the greatest max packet size.
962 struct list_head endpoints;
963 /* How many endpoints of each speed are present. */
964 unsigned int overhead[3];
967 #define XHCI_MAX_INTERVAL 16
969 struct xhci_interval_bw_table {
970 unsigned int interval0_esit_payload;
971 struct xhci_interval_bw interval_bw[XHCI_MAX_INTERVAL];
972 /* Includes reserved bandwidth for async endpoints */
973 unsigned int bw_used;
974 unsigned int ss_bw_in;
975 unsigned int ss_bw_out;
979 struct xhci_virt_device {
980 struct usb_device *udev;
982 * Commands to the hardware are passed an "input context" that
983 * tells the hardware what to change in its data structures.
984 * The hardware will return changes in an "output context" that
985 * software must allocate for the hardware. We need to keep
986 * track of input and output contexts separately because
987 * these commands might fail and we don't trust the hardware.
989 struct xhci_container_ctx *out_ctx;
990 /* Used for addressing devices and configuration changes */
991 struct xhci_container_ctx *in_ctx;
992 /* Rings saved to ensure old alt settings can be re-instated */
993 struct xhci_ring **ring_cache;
994 int num_rings_cached;
995 #define XHCI_MAX_RINGS_CACHED 31
996 struct xhci_virt_ep eps[31];
999 struct xhci_interval_bw_table *bw_table;
1000 struct xhci_tt_bw_info *tt_info;
1001 /* The current max exit latency for the enabled USB3 link states. */
1006 * For each roothub, keep track of the bandwidth information for each periodic
1009 * If a high speed hub is attached to the roothub, each TT associated with that
1010 * hub is a separate bandwidth domain. The interval information for the
1011 * endpoints on the devices under that TT will appear in the TT structure.
1013 struct xhci_root_port_bw_info {
1014 struct list_head tts;
1015 unsigned int num_active_tts;
1016 struct xhci_interval_bw_table bw_table;
1019 struct xhci_tt_bw_info {
1020 struct list_head tt_list;
1023 struct xhci_interval_bw_table bw_table;
1029 * struct xhci_device_context_array
1030 * @dev_context_ptr array of 64-bit DMA addresses for device contexts
1032 struct xhci_device_context_array {
1033 /* 64-bit device addresses; we only write 32-bit addresses */
1034 __le64 dev_context_ptrs[MAX_HC_SLOTS];
1035 /* private xHCD pointers */
1038 /* TODO: write function to set the 64-bit device DMA address */
1040 * TODO: change this to be dynamically sized at HC mem init time since the HC
1041 * might not be able to handle the maximum number of devices possible.
1045 struct xhci_transfer_event {
1046 /* 64-bit buffer address, or immediate data */
1048 __le32 transfer_len;
1049 /* This field is interpreted differently based on the type of TRB */
1053 /* Transfer event TRB length bit mask */
1055 #define EVENT_TRB_LEN(p) ((p) & 0xffffff)
1057 /** Transfer Event bit fields **/
1058 #define TRB_TO_EP_ID(p) (((p) >> 16) & 0x1f)
1060 /* Completion Code - only applicable for some types of TRBs */
1061 #define COMP_CODE_MASK (0xff << 24)
1062 #define GET_COMP_CODE(p) (((p) & COMP_CODE_MASK) >> 24)
1063 #define COMP_INVALID 0
1064 #define COMP_SUCCESS 1
1065 #define COMP_DATA_BUFFER_ERROR 2
1066 #define COMP_BABBLE_DETECTED_ERROR 3
1067 #define COMP_USB_TRANSACTION_ERROR 4
1068 #define COMP_TRB_ERROR 5
1069 #define COMP_STALL_ERROR 6
1070 #define COMP_RESOURCE_ERROR 7
1071 #define COMP_BANDWIDTH_ERROR 8
1072 #define COMP_NO_SLOTS_AVAILABLE_ERROR 9
1073 #define COMP_INVALID_STREAM_TYPE_ERROR 10
1074 #define COMP_SLOT_NOT_ENABLED_ERROR 11
1075 #define COMP_ENDPOINT_NOT_ENABLED_ERROR 12
1076 #define COMP_SHORT_PACKET 13
1077 #define COMP_RING_UNDERRUN 14
1078 #define COMP_RING_OVERRUN 15
1079 #define COMP_VF_EVENT_RING_FULL_ERROR 16
1080 #define COMP_PARAMETER_ERROR 17
1081 #define COMP_BANDWIDTH_OVERRUN_ERROR 18
1082 #define COMP_CONTEXT_STATE_ERROR 19
1083 #define COMP_NO_PING_RESPONSE_ERROR 20
1084 #define COMP_EVENT_RING_FULL_ERROR 21
1085 #define COMP_INCOMPATIBLE_DEVICE_ERROR 22
1086 #define COMP_MISSED_SERVICE_ERROR 23
1087 #define COMP_COMMAND_RING_STOPPED 24
1088 #define COMP_COMMAND_ABORTED 25
1089 #define COMP_STOPPED 26
1090 #define COMP_STOPPED_LENGTH_INVALID 27
1091 #define COMP_STOPPED_SHORT_PACKET 28
1092 #define COMP_MAX_EXIT_LATENCY_TOO_LARGE_ERROR 29
1093 #define COMP_ISOCH_BUFFER_OVERRUN 31
1094 #define COMP_EVENT_LOST_ERROR 32
1095 #define COMP_UNDEFINED_ERROR 33
1096 #define COMP_INVALID_STREAM_ID_ERROR 34
1097 #define COMP_SECONDARY_BANDWIDTH_ERROR 35
1098 #define COMP_SPLIT_TRANSACTION_ERROR 36
1100 static inline const char *xhci_trb_comp_code_string(u8 status)
1107 case COMP_DATA_BUFFER_ERROR:
1108 return "Data Buffer Error";
1109 case COMP_BABBLE_DETECTED_ERROR:
1110 return "Babble Detected";
1111 case COMP_USB_TRANSACTION_ERROR:
1112 return "USB Transaction Error";
1113 case COMP_TRB_ERROR:
1115 case COMP_STALL_ERROR:
1116 return "Stall Error";
1117 case COMP_RESOURCE_ERROR:
1118 return "Resource Error";
1119 case COMP_BANDWIDTH_ERROR:
1120 return "Bandwidth Error";
1121 case COMP_NO_SLOTS_AVAILABLE_ERROR:
1122 return "No Slots Available Error";
1123 case COMP_INVALID_STREAM_TYPE_ERROR:
1124 return "Invalid Stream Type Error";
1125 case COMP_SLOT_NOT_ENABLED_ERROR:
1126 return "Slot Not Enabled Error";
1127 case COMP_ENDPOINT_NOT_ENABLED_ERROR:
1128 return "Endpoint Not Enabled Error";
1129 case COMP_SHORT_PACKET:
1130 return "Short Packet";
1131 case COMP_RING_UNDERRUN:
1132 return "Ring Underrun";
1133 case COMP_RING_OVERRUN:
1134 return "Ring Overrun";
1135 case COMP_VF_EVENT_RING_FULL_ERROR:
1136 return "VF Event Ring Full Error";
1137 case COMP_PARAMETER_ERROR:
1138 return "Parameter Error";
1139 case COMP_BANDWIDTH_OVERRUN_ERROR:
1140 return "Bandwidth Overrun Error";
1141 case COMP_CONTEXT_STATE_ERROR:
1142 return "Context State Error";
1143 case COMP_NO_PING_RESPONSE_ERROR:
1144 return "No Ping Response Error";
1145 case COMP_EVENT_RING_FULL_ERROR:
1146 return "Event Ring Full Error";
1147 case COMP_INCOMPATIBLE_DEVICE_ERROR:
1148 return "Incompatible Device Error";
1149 case COMP_MISSED_SERVICE_ERROR:
1150 return "Missed Service Error";
1151 case COMP_COMMAND_RING_STOPPED:
1152 return "Command Ring Stopped";
1153 case COMP_COMMAND_ABORTED:
1154 return "Command Aborted";
1157 case COMP_STOPPED_LENGTH_INVALID:
1158 return "Stopped - Length Invalid";
1159 case COMP_STOPPED_SHORT_PACKET:
1160 return "Stopped - Short Packet";
1161 case COMP_MAX_EXIT_LATENCY_TOO_LARGE_ERROR:
1162 return "Max Exit Latency Too Large Error";
1163 case COMP_ISOCH_BUFFER_OVERRUN:
1164 return "Isoch Buffer Overrun";
1165 case COMP_EVENT_LOST_ERROR:
1166 return "Event Lost Error";
1167 case COMP_UNDEFINED_ERROR:
1168 return "Undefined Error";
1169 case COMP_INVALID_STREAM_ID_ERROR:
1170 return "Invalid Stream ID Error";
1171 case COMP_SECONDARY_BANDWIDTH_ERROR:
1172 return "Secondary Bandwidth Error";
1173 case COMP_SPLIT_TRANSACTION_ERROR:
1174 return "Split Transaction Error";
1180 struct xhci_link_trb {
1181 /* 64-bit segment pointer*/
1187 /* control bitfields */
1188 #define LINK_TOGGLE (0x1<<1)
1190 /* Command completion event TRB */
1191 struct xhci_event_cmd {
1192 /* Pointer to command TRB, or the value passed by the event data trb */
1198 /* flags bitmasks */
1200 /* Address device - disable SetAddress */
1201 #define TRB_BSR (1<<9)
1203 /* Configure Endpoint - Deconfigure */
1204 #define TRB_DC (1<<9)
1206 /* Stop Ring - Transfer State Preserve */
1207 #define TRB_TSP (1<<9)
1210 #define TRB_TO_VF_INTR_TARGET(p) (((p) & (0x3ff << 22)) >> 22)
1211 #define TRB_TO_VF_ID(p) (((p) & (0xff << 16)) >> 16)
1213 /* Set Latency Tolerance Value */
1214 #define TRB_TO_BELT(p) (((p) & (0xfff << 16)) >> 16)
1216 /* Get Port Bandwidth */
1217 #define TRB_TO_DEV_SPEED(p) (((p) & (0xf << 16)) >> 16)
1220 #define TRB_TO_PACKET_TYPE(p) ((p) & 0x1f)
1221 #define TRB_TO_ROOTHUB_PORT(p) (((p) & (0xff << 24)) >> 24)
1223 enum xhci_setup_dev {
1225 SETUP_CONTEXT_ADDRESS,
1228 /* bits 16:23 are the virtual function ID */
1229 /* bits 24:31 are the slot ID */
1230 #define TRB_TO_SLOT_ID(p) (((p) & (0xff<<24)) >> 24)
1231 #define SLOT_ID_FOR_TRB(p) (((p) & 0xff) << 24)
1233 /* Stop Endpoint TRB - ep_index to endpoint ID for this TRB */
1234 #define TRB_TO_EP_INDEX(p) ((((p) & (0x1f << 16)) >> 16) - 1)
1235 #define EP_ID_FOR_TRB(p) ((((p) + 1) & 0x1f) << 16)
1237 #define SUSPEND_PORT_FOR_TRB(p) (((p) & 1) << 23)
1238 #define TRB_TO_SUSPEND_PORT(p) (((p) & (1 << 23)) >> 23)
1239 #define LAST_EP_INDEX 30
1241 /* Set TR Dequeue Pointer command TRB fields, 6.4.3.9 */
1242 #define TRB_TO_STREAM_ID(p) ((((p) & (0xffff << 16)) >> 16))
1243 #define STREAM_ID_FOR_TRB(p) ((((p)) & 0xffff) << 16)
1244 #define SCT_FOR_TRB(p) (((p) << 1) & 0x7)
1246 /* Link TRB specific fields */
1247 #define TRB_TC (1<<1)
1249 /* Port Status Change Event TRB fields */
1250 /* Port ID - bits 31:24 */
1251 #define GET_PORT_ID(p) (((p) & (0xff << 24)) >> 24)
1253 #define EVENT_DATA (1 << 2)
1255 /* Normal TRB fields */
1256 /* transfer_len bitmasks - bits 0:16 */
1257 #define TRB_LEN(p) ((p) & 0x1ffff)
1258 /* TD Size, packets remaining in this TD, bits 21:17 (5 bits, so max 31) */
1259 #define TRB_TD_SIZE(p) (min((p), (u32)31) << 17)
1260 #define GET_TD_SIZE(p) (((p) & 0x3e0000) >> 17)
1261 /* xhci 1.1 uses the TD_SIZE field for TBC if Extended TBC is enabled (ETE) */
1262 #define TRB_TD_SIZE_TBC(p) (min((p), (u32)31) << 17)
1263 /* Interrupter Target - which MSI-X vector to target the completion event at */
1264 #define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22)
1265 #define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff)
1266 /* Total burst count field, Rsvdz on xhci 1.1 with Extended TBC enabled (ETE) */
1267 #define TRB_TBC(p) (((p) & 0x3) << 7)
1268 #define TRB_TLBPC(p) (((p) & 0xf) << 16)
1270 /* Cycle bit - indicates TRB ownership by HC or HCD */
1271 #define TRB_CYCLE (1<<0)
1273 * Force next event data TRB to be evaluated before task switch.
1274 * Used to pass OS data back after a TD completes.
1276 #define TRB_ENT (1<<1)
1277 /* Interrupt on short packet */
1278 #define TRB_ISP (1<<2)
1279 /* Set PCIe no snoop attribute */
1280 #define TRB_NO_SNOOP (1<<3)
1281 /* Chain multiple TRBs into a TD */
1282 #define TRB_CHAIN (1<<4)
1283 /* Interrupt on completion */
1284 #define TRB_IOC (1<<5)
1285 /* The buffer pointer contains immediate data */
1286 #define TRB_IDT (1<<6)
1288 /* Block Event Interrupt */
1289 #define TRB_BEI (1<<9)
1291 /* Control transfer TRB specific fields */
1292 #define TRB_DIR_IN (1<<16)
1293 #define TRB_TX_TYPE(p) ((p) << 16)
1294 #define TRB_DATA_OUT 2
1295 #define TRB_DATA_IN 3
1297 /* Isochronous TRB specific fields */
1298 #define TRB_SIA (1<<31)
1299 #define TRB_FRAME_ID(p) (((p) & 0x7ff) << 20)
1301 struct xhci_generic_trb {
1306 struct xhci_link_trb link;
1307 struct xhci_transfer_event trans_event;
1308 struct xhci_event_cmd event_cmd;
1309 struct xhci_generic_trb generic;
1313 #define TRB_TYPE_BITMASK (0xfc00)
1314 #define TRB_TYPE(p) ((p) << 10)
1315 #define TRB_FIELD_TO_TYPE(p) (((p) & TRB_TYPE_BITMASK) >> 10)
1317 /* bulk, interrupt, isoc scatter/gather, and control data stage */
1318 #define TRB_NORMAL 1
1319 /* setup stage for control transfers */
1321 /* data stage for control transfers */
1323 /* status stage for control transfers */
1324 #define TRB_STATUS 4
1325 /* isoc transfers */
1327 /* TRB for linking ring segments */
1329 #define TRB_EVENT_DATA 7
1330 /* Transfer Ring No-op (not for the command ring) */
1331 #define TRB_TR_NOOP 8
1333 /* Enable Slot Command */
1334 #define TRB_ENABLE_SLOT 9
1335 /* Disable Slot Command */
1336 #define TRB_DISABLE_SLOT 10
1337 /* Address Device Command */
1338 #define TRB_ADDR_DEV 11
1339 /* Configure Endpoint Command */
1340 #define TRB_CONFIG_EP 12
1341 /* Evaluate Context Command */
1342 #define TRB_EVAL_CONTEXT 13
1343 /* Reset Endpoint Command */
1344 #define TRB_RESET_EP 14
1345 /* Stop Transfer Ring Command */
1346 #define TRB_STOP_RING 15
1347 /* Set Transfer Ring Dequeue Pointer Command */
1348 #define TRB_SET_DEQ 16
1349 /* Reset Device Command */
1350 #define TRB_RESET_DEV 17
1351 /* Force Event Command (opt) */
1352 #define TRB_FORCE_EVENT 18
1353 /* Negotiate Bandwidth Command (opt) */
1354 #define TRB_NEG_BANDWIDTH 19
1355 /* Set Latency Tolerance Value Command (opt) */
1356 #define TRB_SET_LT 20
1357 /* Get port bandwidth Command */
1358 #define TRB_GET_BW 21
1359 /* Force Header Command - generate a transaction or link management packet */
1360 #define TRB_FORCE_HEADER 22
1361 /* No-op Command - not for transfer rings */
1362 #define TRB_CMD_NOOP 23
1363 /* TRB IDs 24-31 reserved */
1365 /* Transfer Event */
1366 #define TRB_TRANSFER 32
1367 /* Command Completion Event */
1368 #define TRB_COMPLETION 33
1369 /* Port Status Change Event */
1370 #define TRB_PORT_STATUS 34
1371 /* Bandwidth Request Event (opt) */
1372 #define TRB_BANDWIDTH_EVENT 35
1373 /* Doorbell Event (opt) */
1374 #define TRB_DOORBELL 36
1375 /* Host Controller Event */
1376 #define TRB_HC_EVENT 37
1377 /* Device Notification Event - device sent function wake notification */
1378 #define TRB_DEV_NOTE 38
1379 /* MFINDEX Wrap Event - microframe counter wrapped */
1380 #define TRB_MFINDEX_WRAP 39
1381 /* TRB IDs 40-47 reserved, 48-63 is vendor-defined */
1383 /* Nec vendor-specific command completion event. */
1384 #define TRB_NEC_CMD_COMP 48
1385 /* Get NEC firmware revision. */
1386 #define TRB_NEC_GET_FW 49
1388 static inline const char *xhci_trb_type_string(u8 type)
1394 return "Setup Stage";
1396 return "Data Stage";
1398 return "Status Stage";
1403 case TRB_EVENT_DATA:
1404 return "Event Data";
1407 case TRB_ENABLE_SLOT:
1408 return "Enable Slot Command";
1409 case TRB_DISABLE_SLOT:
1410 return "Disable Slot Command";
1412 return "Address Device Command";
1414 return "Configure Endpoint Command";
1415 case TRB_EVAL_CONTEXT:
1416 return "Evaluate Context Command";
1418 return "Reset Endpoint Command";
1420 return "Stop Ring Command";
1422 return "Set TR Dequeue Pointer Command";
1424 return "Reset Device Command";
1425 case TRB_FORCE_EVENT:
1426 return "Force Event Command";
1427 case TRB_NEG_BANDWIDTH:
1428 return "Negotiate Bandwidth Command";
1430 return "Set Latency Tolerance Value Command";
1432 return "Get Port Bandwidth Command";
1433 case TRB_FORCE_HEADER:
1434 return "Force Header Command";
1436 return "No-Op Command";
1438 return "Transfer Event";
1439 case TRB_COMPLETION:
1440 return "Command Completion Event";
1441 case TRB_PORT_STATUS:
1442 return "Port Status Change Event";
1443 case TRB_BANDWIDTH_EVENT:
1444 return "Bandwidth Request Event";
1446 return "Doorbell Event";
1448 return "Host Controller Event";
1450 return "Device Notification Event";
1451 case TRB_MFINDEX_WRAP:
1452 return "MFINDEX Wrap Event";
1453 case TRB_NEC_CMD_COMP:
1454 return "NEC Command Completion Event";
1455 case TRB_NEC_GET_FW:
1456 return "NET Get Firmware Revision Command";
1462 #define TRB_TYPE_LINK(x) (((x) & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK))
1463 /* Above, but for __le32 types -- can avoid work by swapping constants: */
1464 #define TRB_TYPE_LINK_LE32(x) (((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
1465 cpu_to_le32(TRB_TYPE(TRB_LINK)))
1466 #define TRB_TYPE_NOOP_LE32(x) (((x) & cpu_to_le32(TRB_TYPE_BITMASK)) == \
1467 cpu_to_le32(TRB_TYPE(TRB_TR_NOOP)))
1469 #define NEC_FW_MINOR(p) (((p) >> 0) & 0xff)
1470 #define NEC_FW_MAJOR(p) (((p) >> 8) & 0xff)
1473 * TRBS_PER_SEGMENT must be a multiple of 4,
1474 * since the command ring is 64-byte aligned.
1475 * It must also be greater than 16.
1477 #define TRBS_PER_SEGMENT 256
1478 /* Allow two commands + a link TRB, along with any reserved command TRBs */
1479 #define MAX_RSVD_CMD_TRBS (TRBS_PER_SEGMENT - 3)
1480 #define TRB_SEGMENT_SIZE (TRBS_PER_SEGMENT*16)
1481 #define TRB_SEGMENT_SHIFT (ilog2(TRB_SEGMENT_SIZE))
1482 /* TRB buffer pointers can't cross 64KB boundaries */
1483 #define TRB_MAX_BUFF_SHIFT 16
1484 #define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT)
1485 /* How much data is left before the 64KB boundary? */
1486 #define TRB_BUFF_LEN_UP_TO_BOUNDARY(addr) (TRB_MAX_BUFF_SIZE - \
1487 (addr & (TRB_MAX_BUFF_SIZE - 1)))
1489 struct xhci_segment {
1490 union xhci_trb *trbs;
1491 /* private to HCD */
1492 struct xhci_segment *next;
1494 /* Max packet sized bounce buffer for td-fragmant alignment */
1495 dma_addr_t bounce_dma;
1497 unsigned int bounce_offs;
1498 unsigned int bounce_len;
1502 struct list_head td_list;
1503 struct list_head cancelled_td_list;
1505 struct xhci_segment *start_seg;
1506 union xhci_trb *first_trb;
1507 union xhci_trb *last_trb;
1508 struct xhci_segment *bounce_seg;
1509 /* actual_length of the URB has already been set */
1510 bool urb_length_set;
1513 /* xHCI command default timeout value */
1514 #define XHCI_CMD_DEFAULT_TIMEOUT (5 * HZ)
1516 /* command descriptor */
1518 struct xhci_command *command;
1519 union xhci_trb *cmd_trb;
1522 struct xhci_dequeue_state {
1523 struct xhci_segment *new_deq_seg;
1524 union xhci_trb *new_deq_ptr;
1525 int new_cycle_state;
1528 enum xhci_ring_type {
1538 static inline const char *xhci_ring_type_string(enum xhci_ring_type type)
1561 struct xhci_segment *first_seg;
1562 struct xhci_segment *last_seg;
1563 union xhci_trb *enqueue;
1564 struct xhci_segment *enq_seg;
1565 unsigned int enq_updates;
1566 union xhci_trb *dequeue;
1567 struct xhci_segment *deq_seg;
1568 unsigned int deq_updates;
1569 struct list_head td_list;
1571 * Write the cycle state into the TRB cycle field to give ownership of
1572 * the TRB to the host controller (if we are the producer), or to check
1573 * if we own the TRB (if we are the consumer). See section 4.9.1.
1576 unsigned int stream_id;
1577 unsigned int num_segs;
1578 unsigned int num_trbs_free;
1579 unsigned int num_trbs_free_temp;
1580 unsigned int bounce_buf_len;
1581 enum xhci_ring_type type;
1582 bool last_td_was_short;
1583 struct radix_tree_root *trb_address_map;
1586 struct xhci_erst_entry {
1587 /* 64-bit event ring segment address */
1595 struct xhci_erst_entry *entries;
1596 unsigned int num_entries;
1597 /* xhci->event_ring keeps track of segment dma addresses */
1598 dma_addr_t erst_dma_addr;
1599 /* Num entries the ERST can contain */
1600 unsigned int erst_size;
1603 struct xhci_scratchpad {
1607 dma_addr_t *sp_dma_buffers;
1613 struct xhci_td td[0];
1617 * Each segment table entry is 4*32bits long. 1K seems like an ok size:
1618 * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table,
1619 * meaning 64 ring segments.
1620 * Initial allocated size of the ERST, in number of entries */
1621 #define ERST_NUM_SEGS 1
1622 /* Initial allocated size of the ERST, in number of entries */
1623 #define ERST_SIZE 64
1624 /* Initial number of event segment rings allocated */
1625 #define ERST_ENTRIES 1
1626 /* Poll every 60 seconds */
1627 #define POLL_TIMEOUT 60
1628 /* Stop endpoint command timeout (secs) for URB cancellation watchdog timer */
1629 #define XHCI_STOP_EP_CMD_TIMEOUT 5
1630 /* XXX: Make these module parameters */
1647 struct list_head list;
1650 struct xhci_bus_state {
1651 unsigned long bus_suspended;
1652 unsigned long next_statechange;
1654 /* Port suspend arrays are indexed by the portnum of the fake roothub */
1655 /* ports suspend status arrays - max 31 ports for USB2, 15 for USB3 */
1657 u32 suspended_ports;
1658 u32 port_remote_wakeup;
1659 unsigned long resume_done[USB_MAXCHILDREN];
1660 /* which ports have started to resume */
1661 unsigned long resuming_ports;
1662 /* Which ports are waiting on RExit to U0 transition. */
1663 unsigned long rexit_ports;
1664 struct completion rexit_done[USB_MAXCHILDREN];
1669 * It can take up to 20 ms to transition from RExit to U0 on the
1670 * Intel Lynx Point LP xHCI host.
1672 #define XHCI_MAX_REXIT_TIMEOUT (20 * 1000)
1674 static inline unsigned int hcd_index(struct usb_hcd *hcd)
1676 if (hcd->speed == HCD_USB3)
1685 u32 *psi; /* array of protocol speed ID entries */
1690 /* There is one xhci_hcd structure per controller */
1692 struct usb_hcd *main_hcd;
1693 struct usb_hcd *shared_hcd;
1694 /* glue to PCI and HCD framework */
1695 struct xhci_cap_regs __iomem *cap_regs;
1696 struct xhci_op_regs __iomem *op_regs;
1697 struct xhci_run_regs __iomem *run_regs;
1698 struct xhci_doorbell_array __iomem *dba;
1699 /* Our HCD's current interrupter register set */
1700 struct xhci_intr_reg __iomem *ir_set;
1702 /* Cached register copies of read-only HC data */
1711 /* packed release number */
1715 u8 max_interrupters;
1719 /* 4KB min, 128MB max */
1721 /* Valid values are 12 to 20, inclusive */
1725 struct msix_entry *msix_entries;
1726 /* optional clock */
1728 /* data structures */
1729 struct xhci_device_context_array *dcbaa;
1730 struct xhci_ring *cmd_ring;
1731 unsigned int cmd_ring_state;
1732 #define CMD_RING_STATE_RUNNING (1 << 0)
1733 #define CMD_RING_STATE_ABORTED (1 << 1)
1734 #define CMD_RING_STATE_STOPPED (1 << 2)
1735 struct list_head cmd_list;
1736 unsigned int cmd_ring_reserved_trbs;
1737 struct delayed_work cmd_timer;
1738 struct completion cmd_ring_stop_completion;
1739 struct xhci_command *current_cmd;
1740 struct xhci_ring *event_ring;
1741 struct xhci_erst erst;
1743 struct xhci_scratchpad *scratchpad;
1744 /* Store LPM test failed devices' information */
1745 struct list_head lpm_failed_devs;
1747 /* slot enabling and address device helpers */
1748 /* these are not thread safe so use mutex */
1750 /* For USB 3.0 LPM enable/disable. */
1751 struct xhci_command *lpm_command;
1752 /* Internal mirror of the HW's dcbaa */
1753 struct xhci_virt_device *devs[MAX_HC_SLOTS];
1754 /* For keeping track of bandwidth domains per roothub. */
1755 struct xhci_root_port_bw_info *rh_bw;
1758 struct dma_pool *device_pool;
1759 struct dma_pool *segment_pool;
1760 struct dma_pool *small_streams_pool;
1761 struct dma_pool *medium_streams_pool;
1763 /* Host controller watchdog timer structures */
1764 unsigned int xhc_state;
1768 /* Host controller is dying - not responding to commands. "I'm not dead yet!"
1770 * xHC interrupts have been disabled and a watchdog timer will (or has already)
1771 * halt the xHCI host, and complete all URBs with an -ESHUTDOWN code. Any code
1772 * that sees this status (other than the timer that set it) should stop touching
1773 * hardware immediately. Interrupt handlers should return immediately when
1774 * they see this status (any time they drop and re-acquire xhci->lock).
1775 * xhci_urb_dequeue() should call usb_hcd_check_unlink_urb() and return without
1776 * putting the TD on the canceled list, etc.
1778 * There are no reports of xHCI host controllers that display this issue.
1780 #define XHCI_STATE_DYING (1 << 0)
1781 #define XHCI_STATE_HALTED (1 << 1)
1782 #define XHCI_STATE_REMOVING (1 << 2)
1783 unsigned int quirks;
1784 #define XHCI_LINK_TRB_QUIRK (1 << 0)
1785 #define XHCI_RESET_EP_QUIRK (1 << 1)
1786 #define XHCI_NEC_HOST (1 << 2)
1787 #define XHCI_AMD_PLL_FIX (1 << 3)
1788 #define XHCI_SPURIOUS_SUCCESS (1 << 4)
1790 * Certain Intel host controllers have a limit to the number of endpoint
1791 * contexts they can handle. Ideally, they would signal that they can't handle
1792 * anymore endpoint contexts by returning a Resource Error for the Configure
1793 * Endpoint command, but they don't. Instead they expect software to keep track
1794 * of the number of active endpoints for them, across configure endpoint
1795 * commands, reset device commands, disable slot commands, and address device
1798 #define XHCI_EP_LIMIT_QUIRK (1 << 5)
1799 #define XHCI_BROKEN_MSI (1 << 6)
1800 #define XHCI_RESET_ON_RESUME (1 << 7)
1801 #define XHCI_SW_BW_CHECKING (1 << 8)
1802 #define XHCI_AMD_0x96_HOST (1 << 9)
1803 #define XHCI_TRUST_TX_LENGTH (1 << 10)
1804 #define XHCI_LPM_SUPPORT (1 << 11)
1805 #define XHCI_INTEL_HOST (1 << 12)
1806 #define XHCI_SPURIOUS_REBOOT (1 << 13)
1807 #define XHCI_COMP_MODE_QUIRK (1 << 14)
1808 #define XHCI_AVOID_BEI (1 << 15)
1809 #define XHCI_PLAT (1 << 16)
1810 #define XHCI_SLOW_SUSPEND (1 << 17)
1811 #define XHCI_SPURIOUS_WAKEUP (1 << 18)
1812 /* For controllers with a broken beyond repair streams implementation */
1813 #define XHCI_BROKEN_STREAMS (1 << 19)
1814 #define XHCI_PME_STUCK_QUIRK (1 << 20)
1815 #define XHCI_MTK_HOST (1 << 21)
1816 #define XHCI_SSIC_PORT_UNUSED (1 << 22)
1817 #define XHCI_NO_64BIT_SUPPORT (1 << 23)
1818 #define XHCI_MISSING_CAS (1 << 24)
1819 /* For controller with a broken Port Disable implementation */
1820 #define XHCI_BROKEN_PORT_PED (1 << 25)
1822 unsigned int num_active_eps;
1823 unsigned int limit_active_eps;
1824 /* There are two roothubs to keep track of bus suspend info for */
1825 struct xhci_bus_state bus_state[2];
1826 /* Is each xHCI roothub port a USB 3.0, USB 2.0, or USB 1.1 port? */
1828 /* Array of pointers to USB 3.0 PORTSC registers */
1829 __le32 __iomem **usb3_ports;
1830 unsigned int num_usb3_ports;
1831 /* Array of pointers to USB 2.0 PORTSC registers */
1832 __le32 __iomem **usb2_ports;
1833 struct xhci_hub usb2_rhub;
1834 struct xhci_hub usb3_rhub;
1835 unsigned int num_usb2_ports;
1836 /* support xHCI 0.96 spec USB2 software LPM */
1837 unsigned sw_lpm_support:1;
1838 /* support xHCI 1.0 spec USB2 hardware LPM */
1839 unsigned hw_lpm_support:1;
1840 /* cached usb2 extened protocol capabilites */
1842 unsigned int num_ext_caps;
1843 /* Compliance Mode Recovery Data */
1844 struct timer_list comp_mode_recovery_timer;
1846 /* Compliance Mode Timer Triggered every 2 seconds */
1847 #define COMP_MODE_RCVRY_MSECS 2000
1849 /* platform-specific data -- must come last */
1850 unsigned long priv[0] __aligned(sizeof(s64));
1853 /* Platform specific overrides to generic XHCI hc_driver ops */
1854 struct xhci_driver_overrides {
1855 size_t extra_priv_size;
1856 int (*reset)(struct usb_hcd *hcd);
1857 int (*start)(struct usb_hcd *hcd);
1860 #define XHCI_CFC_DELAY 10
1862 /* convert between an HCD pointer and the corresponding EHCI_HCD */
1863 static inline struct xhci_hcd *hcd_to_xhci(struct usb_hcd *hcd)
1865 struct usb_hcd *primary_hcd;
1867 if (usb_hcd_is_primary_hcd(hcd))
1870 primary_hcd = hcd->primary_hcd;
1872 return (struct xhci_hcd *) (primary_hcd->hcd_priv);
1875 static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
1877 return xhci->main_hcd;
1880 #define xhci_dbg(xhci, fmt, args...) \
1881 dev_dbg(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
1882 #define xhci_err(xhci, fmt, args...) \
1883 dev_err(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
1884 #define xhci_warn(xhci, fmt, args...) \
1885 dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
1886 #define xhci_warn_ratelimited(xhci, fmt, args...) \
1887 dev_warn_ratelimited(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
1888 #define xhci_info(xhci, fmt, args...) \
1889 dev_info(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
1892 * Registers should always be accessed with double word or quad word accesses.
1894 * Some xHCI implementations may support 64-bit address pointers. Registers
1895 * with 64-bit address pointers should be written to with dword accesses by
1896 * writing the low dword first (ptr[0]), then the high dword (ptr[1]) second.
1897 * xHCI implementations that do not support 64-bit address pointers will ignore
1898 * the high dword, and write order is irrelevant.
1900 static inline u64 xhci_read_64(const struct xhci_hcd *xhci,
1901 __le64 __iomem *regs)
1903 return lo_hi_readq(regs);
1905 static inline void xhci_write_64(struct xhci_hcd *xhci,
1906 const u64 val, __le64 __iomem *regs)
1908 lo_hi_writeq(val, regs);
1911 static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
1913 return xhci->quirks & XHCI_LINK_TRB_QUIRK;
1916 /* xHCI debugging */
1917 void xhci_print_ir_set(struct xhci_hcd *xhci, int set_num);
1918 void xhci_print_registers(struct xhci_hcd *xhci);
1919 void xhci_dbg_regs(struct xhci_hcd *xhci);
1920 void xhci_print_run_regs(struct xhci_hcd *xhci);
1921 void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb);
1922 void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb);
1923 void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg);
1924 void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring);
1925 void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst);
1926 void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci);
1927 void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring);
1928 void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep);
1929 char *xhci_get_slot_state(struct xhci_hcd *xhci,
1930 struct xhci_container_ctx *ctx);
1931 void xhci_dbg_ep_rings(struct xhci_hcd *xhci,
1932 unsigned int slot_id, unsigned int ep_index,
1933 struct xhci_virt_ep *ep);
1934 void xhci_dbg_trace(struct xhci_hcd *xhci, void (*trace)(struct va_format *),
1935 const char *fmt, ...);
1937 /* xHCI memory management */
1938 void xhci_mem_cleanup(struct xhci_hcd *xhci);
1939 int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags);
1940 void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id);
1941 int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, struct usb_device *udev, gfp_t flags);
1942 int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev);
1943 void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci,
1944 struct usb_device *udev);
1945 unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc);
1946 unsigned int xhci_get_endpoint_address(unsigned int ep_index);
1947 unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc);
1948 unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index);
1949 unsigned int xhci_last_valid_endpoint(u32 added_ctxs);
1950 void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep);
1951 void xhci_drop_ep_from_interval_table(struct xhci_hcd *xhci,
1952 struct xhci_bw_info *ep_bw,
1953 struct xhci_interval_bw_table *bw_table,
1954 struct usb_device *udev,
1955 struct xhci_virt_ep *virt_ep,
1956 struct xhci_tt_bw_info *tt_info);
1957 void xhci_update_tt_active_eps(struct xhci_hcd *xhci,
1958 struct xhci_virt_device *virt_dev,
1959 int old_active_eps);
1960 void xhci_clear_endpoint_bw_info(struct xhci_bw_info *bw_info);
1961 void xhci_update_bw_info(struct xhci_hcd *xhci,
1962 struct xhci_container_ctx *in_ctx,
1963 struct xhci_input_control_ctx *ctrl_ctx,
1964 struct xhci_virt_device *virt_dev);
1965 void xhci_endpoint_copy(struct xhci_hcd *xhci,
1966 struct xhci_container_ctx *in_ctx,
1967 struct xhci_container_ctx *out_ctx,
1968 unsigned int ep_index);
1969 void xhci_slot_copy(struct xhci_hcd *xhci,
1970 struct xhci_container_ctx *in_ctx,
1971 struct xhci_container_ctx *out_ctx);
1972 int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev,
1973 struct usb_device *udev, struct usb_host_endpoint *ep,
1975 void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring);
1976 int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring,
1977 unsigned int num_trbs, gfp_t flags);
1978 void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci,
1979 struct xhci_virt_device *virt_dev,
1980 unsigned int ep_index);
1981 struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci,
1982 unsigned int num_stream_ctxs,
1983 unsigned int num_streams,
1984 unsigned int max_packet, gfp_t flags);
1985 void xhci_free_stream_info(struct xhci_hcd *xhci,
1986 struct xhci_stream_info *stream_info);
1987 void xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci,
1988 struct xhci_ep_ctx *ep_ctx,
1989 struct xhci_stream_info *stream_info);
1990 void xhci_setup_no_streams_ep_input_ctx(struct xhci_ep_ctx *ep_ctx,
1991 struct xhci_virt_ep *ep);
1992 void xhci_free_device_endpoint_resources(struct xhci_hcd *xhci,
1993 struct xhci_virt_device *virt_dev, bool drop_control_ep);
1994 struct xhci_ring *xhci_dma_to_transfer_ring(
1995 struct xhci_virt_ep *ep,
1997 struct xhci_ring *xhci_stream_id_to_ring(
1998 struct xhci_virt_device *dev,
1999 unsigned int ep_index,
2000 unsigned int stream_id);
2001 struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
2002 bool allocate_in_ctx, bool allocate_completion,
2004 void xhci_urb_free_priv(struct urb_priv *urb_priv);
2005 void xhci_free_command(struct xhci_hcd *xhci,
2006 struct xhci_command *command);
2008 /* xHCI host controller glue */
2009 typedef void (*xhci_get_quirks_t)(struct device *, struct xhci_hcd *);
2010 int xhci_handshake(void __iomem *ptr, u32 mask, u32 done, int usec);
2011 void xhci_quiesce(struct xhci_hcd *xhci);
2012 int xhci_halt(struct xhci_hcd *xhci);
2013 int xhci_reset(struct xhci_hcd *xhci);
2014 int xhci_init(struct usb_hcd *hcd);
2015 int xhci_run(struct usb_hcd *hcd);
2016 void xhci_stop(struct usb_hcd *hcd);
2017 void xhci_shutdown(struct usb_hcd *hcd);
2018 int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks);
2019 void xhci_init_driver(struct hc_driver *drv,
2020 const struct xhci_driver_overrides *over);
2023 int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup);
2024 int xhci_resume(struct xhci_hcd *xhci, bool hibernated);
2026 #define xhci_suspend NULL
2027 #define xhci_resume NULL
2030 int xhci_get_frame(struct usb_hcd *hcd);
2031 irqreturn_t xhci_irq(struct usb_hcd *hcd);
2032 irqreturn_t xhci_msi_irq(int irq, void *hcd);
2033 int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev);
2034 void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev);
2035 int xhci_alloc_tt_info(struct xhci_hcd *xhci,
2036 struct xhci_virt_device *virt_dev,
2037 struct usb_device *hdev,
2038 struct usb_tt *tt, gfp_t mem_flags);
2039 int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
2040 struct usb_host_endpoint **eps, unsigned int num_eps,
2041 unsigned int num_streams, gfp_t mem_flags);
2042 int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev,
2043 struct usb_host_endpoint **eps, unsigned int num_eps,
2045 int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev);
2046 int xhci_enable_device(struct usb_hcd *hcd, struct usb_device *udev);
2047 int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev);
2048 int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
2049 struct usb_device *udev, int enable);
2050 int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
2051 struct usb_tt *tt, gfp_t mem_flags);
2052 int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags);
2053 int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status);
2054 int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
2055 int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
2056 void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
2057 int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev);
2058 int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
2059 void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
2061 /* xHCI ring, segment, TRB, and TD functions */
2062 dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb);
2063 struct xhci_segment *trb_in_td(struct xhci_hcd *xhci,
2064 struct xhci_segment *start_seg, union xhci_trb *start_trb,
2065 union xhci_trb *end_trb, dma_addr_t suspect_dma, bool debug);
2066 int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code);
2067 void xhci_ring_cmd_db(struct xhci_hcd *xhci);
2068 int xhci_queue_slot_control(struct xhci_hcd *xhci, struct xhci_command *cmd,
2069 u32 trb_type, u32 slot_id);
2070 int xhci_queue_address_device(struct xhci_hcd *xhci, struct xhci_command *cmd,
2071 dma_addr_t in_ctx_ptr, u32 slot_id, enum xhci_setup_dev);
2072 int xhci_queue_vendor_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
2073 u32 field1, u32 field2, u32 field3, u32 field4);
2074 int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, struct xhci_command *cmd,
2075 int slot_id, unsigned int ep_index, int suspend);
2076 int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb,
2077 int slot_id, unsigned int ep_index);
2078 int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb,
2079 int slot_id, unsigned int ep_index);
2080 int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb,
2081 int slot_id, unsigned int ep_index);
2082 int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
2083 struct urb *urb, int slot_id, unsigned int ep_index);
2084 int xhci_queue_configure_endpoint(struct xhci_hcd *xhci,
2085 struct xhci_command *cmd, dma_addr_t in_ctx_ptr, u32 slot_id,
2086 bool command_must_succeed);
2087 int xhci_queue_evaluate_context(struct xhci_hcd *xhci, struct xhci_command *cmd,
2088 dma_addr_t in_ctx_ptr, u32 slot_id, bool command_must_succeed);
2089 int xhci_queue_reset_ep(struct xhci_hcd *xhci, struct xhci_command *cmd,
2090 int slot_id, unsigned int ep_index);
2091 int xhci_queue_reset_device(struct xhci_hcd *xhci, struct xhci_command *cmd,
2093 void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
2094 unsigned int slot_id, unsigned int ep_index,
2095 unsigned int stream_id, struct xhci_td *cur_td,
2096 struct xhci_dequeue_state *state);
2097 void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
2098 unsigned int slot_id, unsigned int ep_index,
2099 unsigned int stream_id,
2100 struct xhci_dequeue_state *deq_state);
2101 void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci,
2102 unsigned int ep_index, struct xhci_td *td);
2103 void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci,
2104 unsigned int slot_id, unsigned int ep_index,
2105 struct xhci_dequeue_state *deq_state);
2106 void xhci_stop_endpoint_command_watchdog(unsigned long arg);
2107 void xhci_handle_command_timeout(struct work_struct *work);
2109 void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id,
2110 unsigned int ep_index, unsigned int stream_id);
2111 void xhci_cleanup_command_queue(struct xhci_hcd *xhci);
2113 /* xHCI roothub code */
2114 void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array,
2115 int port_id, u32 link_state);
2116 int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd,
2117 struct usb_device *udev, enum usb3_link_state state);
2118 int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd,
2119 struct usb_device *udev, enum usb3_link_state state);
2120 void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array,
2121 int port_id, u32 port_bit);
2122 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
2123 char *buf, u16 wLength);
2124 int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
2125 int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1);
2128 int xhci_bus_suspend(struct usb_hcd *hcd);
2129 int xhci_bus_resume(struct usb_hcd *hcd);
2131 #define xhci_bus_suspend NULL
2132 #define xhci_bus_resume NULL
2133 #endif /* CONFIG_PM */
2135 u32 xhci_port_state_to_neutral(u32 state);
2136 int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
2138 void xhci_ring_device(struct xhci_hcd *xhci, int slot_id);
2141 struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_container_ctx *ctx);
2142 struct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx);
2143 struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int ep_index);
2145 struct xhci_ring *xhci_triad_to_transfer_ring(struct xhci_hcd *xhci,
2146 unsigned int slot_id, unsigned int ep_index,
2147 unsigned int stream_id);
2148 static inline struct xhci_ring *xhci_urb_to_transfer_ring(struct xhci_hcd *xhci,
2151 return xhci_triad_to_transfer_ring(xhci, urb->dev->slot_id,
2152 xhci_get_endpoint_index(&urb->ep->desc),
2156 static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2,
2159 static char str[256];
2160 int type = TRB_FIELD_TO_TYPE(field3);
2165 "TRB %08x%08x status '%s' len %d slot %d ep %d type '%s' flags %c:%c",
2167 xhci_trb_comp_code_string(GET_COMP_CODE(field2)),
2168 EVENT_TRB_LEN(field2), TRB_TO_SLOT_ID(field3),
2169 /* Macro decrements 1, maybe it shouldn't?!? */
2170 TRB_TO_EP_INDEX(field3) + 1,
2171 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2172 field3 & EVENT_DATA ? 'E' : 'e',
2173 field3 & TRB_CYCLE ? 'C' : 'c');
2176 case TRB_COMPLETION:
2177 case TRB_PORT_STATUS:
2178 case TRB_BANDWIDTH_EVENT:
2182 case TRB_MFINDEX_WRAP:
2184 "TRB %08x%08x status '%s' len %d slot %d ep %d type '%s' flags %c:%c",
2186 xhci_trb_comp_code_string(GET_COMP_CODE(field2)),
2187 EVENT_TRB_LEN(field2), TRB_TO_SLOT_ID(field3),
2188 /* Macro decrements 1, maybe it shouldn't?!? */
2189 TRB_TO_EP_INDEX(field3) + 1,
2190 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2191 field3 & EVENT_DATA ? 'E' : 'e',
2192 field3 & TRB_CYCLE ? 'C' : 'c');
2197 "bRequestType %02x bRequest %02x wValue %02x%02x wIndex %02x%02x wLength %d length %d TD size %d intr %d type '%s' flags %c:%c:%c:%c:%c:%c:%c:%c",
2199 (field0 & 0xff00) >> 8,
2200 (field0 & 0xff000000) >> 24,
2201 (field0 & 0xff0000) >> 16,
2202 (field1 & 0xff00) >> 8,
2204 (field1 & 0xff000000) >> 16 |
2205 (field1 & 0xff0000) >> 16,
2206 TRB_LEN(field2), GET_TD_SIZE(field2),
2207 GET_INTR_TARGET(field2),
2208 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2209 field3 & TRB_BEI ? 'B' : 'b',
2210 field3 & TRB_IDT ? 'I' : 'i',
2211 field3 & TRB_IOC ? 'I' : 'i',
2212 field3 & TRB_CHAIN ? 'C' : 'c',
2213 field3 & TRB_NO_SNOOP ? 'S' : 's',
2214 field3 & TRB_ISP ? 'I' : 'i',
2215 field3 & TRB_ENT ? 'E' : 'e',
2216 field3 & TRB_CYCLE ? 'C' : 'c');
2222 case TRB_EVENT_DATA:
2225 "Buffer %08x%08x length %d TD size %d intr %d type '%s' flags %c:%c:%c:%c:%c:%c:%c:%c",
2226 field1, field0, TRB_LEN(field2), GET_TD_SIZE(field2),
2227 GET_INTR_TARGET(field2),
2228 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2229 field3 & TRB_BEI ? 'B' : 'b',
2230 field3 & TRB_IDT ? 'I' : 'i',
2231 field3 & TRB_IOC ? 'I' : 'i',
2232 field3 & TRB_CHAIN ? 'C' : 'c',
2233 field3 & TRB_NO_SNOOP ? 'S' : 's',
2234 field3 & TRB_ISP ? 'I' : 'i',
2235 field3 & TRB_ENT ? 'E' : 'e',
2236 field3 & TRB_CYCLE ? 'C' : 'c');
2240 case TRB_ENABLE_SLOT:
2243 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2244 field3 & TRB_CYCLE ? 'C' : 'c');
2246 case TRB_DISABLE_SLOT:
2247 case TRB_NEG_BANDWIDTH:
2249 "%s: slot %d flags %c",
2250 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2251 TRB_TO_SLOT_ID(field3),
2252 field3 & TRB_CYCLE ? 'C' : 'c');
2256 "%s: ctx %08x%08x slot %d flags %c:%c",
2257 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2259 TRB_TO_SLOT_ID(field3),
2260 field3 & TRB_BSR ? 'B' : 'b',
2261 field3 & TRB_CYCLE ? 'C' : 'c');
2265 "%s: ctx %08x%08x slot %d flags %c:%c",
2266 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2268 TRB_TO_SLOT_ID(field3),
2269 field3 & TRB_DC ? 'D' : 'd',
2270 field3 & TRB_CYCLE ? 'C' : 'c');
2272 case TRB_EVAL_CONTEXT:
2274 "%s: ctx %08x%08x slot %d flags %c",
2275 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2277 TRB_TO_SLOT_ID(field3),
2278 field3 & TRB_CYCLE ? 'C' : 'c');
2282 "%s: ctx %08x%08x slot %d ep %d flags %c",
2283 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2285 TRB_TO_SLOT_ID(field3),
2286 /* Macro decrements 1, maybe it shouldn't?!? */
2287 TRB_TO_EP_INDEX(field3) + 1,
2288 field3 & TRB_CYCLE ? 'C' : 'c');
2292 "%s: slot %d sp %d ep %d flags %c",
2293 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2294 TRB_TO_SLOT_ID(field3),
2295 TRB_TO_SUSPEND_PORT(field3),
2296 /* Macro decrements 1, maybe it shouldn't?!? */
2297 TRB_TO_EP_INDEX(field3) + 1,
2298 field3 & TRB_CYCLE ? 'C' : 'c');
2302 "%s: deq %08x%08x stream %d slot %d ep %d flags %c",
2303 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2305 TRB_TO_STREAM_ID(field2),
2306 TRB_TO_SLOT_ID(field3),
2307 /* Macro decrements 1, maybe it shouldn't?!? */
2308 TRB_TO_EP_INDEX(field3) + 1,
2309 field3 & TRB_CYCLE ? 'C' : 'c');
2313 "%s: slot %d flags %c",
2314 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2315 TRB_TO_SLOT_ID(field3),
2316 field3 & TRB_CYCLE ? 'C' : 'c');
2318 case TRB_FORCE_EVENT:
2320 "%s: event %08x%08x vf intr %d vf id %d flags %c",
2321 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2323 TRB_TO_VF_INTR_TARGET(field2),
2324 TRB_TO_VF_ID(field3),
2325 field3 & TRB_CYCLE ? 'C' : 'c');
2329 "%s: belt %d flags %c",
2330 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2331 TRB_TO_BELT(field3),
2332 field3 & TRB_CYCLE ? 'C' : 'c');
2336 "%s: ctx %08x%08x slot %d speed %d flags %c",
2337 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2339 TRB_TO_SLOT_ID(field3),
2340 TRB_TO_DEV_SPEED(field3),
2341 field3 & TRB_CYCLE ? 'C' : 'c');
2343 case TRB_FORCE_HEADER:
2345 "%s: info %08x%08x%08x pkt type %d roothub port %d flags %c",
2346 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2347 field2, field1, field0 & 0xffffffe0,
2348 TRB_TO_PACKET_TYPE(field0),
2349 TRB_TO_ROOTHUB_PORT(field3),
2350 field3 & TRB_CYCLE ? 'C' : 'c');
2354 "type '%s' -> raw %08x %08x %08x %08x",
2355 xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)),
2356 field0, field1, field2, field3);
2363 #endif /* __LINUX_XHCI_HCD_H */