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74c68741 SS |
1 | /* |
2 | * xHCI host controller driver | |
3 | * | |
4 | * Copyright (C) 2008 Intel Corp. | |
5 | * | |
6 | * Author: Sarah Sharp | |
7 | * Some code borrowed from the Linux EHCI driver. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | * for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software Foundation, | |
20 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
23 | #ifndef __LINUX_XHCI_HCD_H | |
24 | #define __LINUX_XHCI_HCD_H | |
25 | ||
26 | #include <linux/usb.h> | |
7f84eef0 | 27 | #include <linux/timer.h> |
8e595a5d | 28 | #include <linux/kernel.h> |
27729aad | 29 | #include <linux/usb/hcd.h> |
74c68741 | 30 | |
74c68741 SS |
31 | /* Code sharing between pci-quirks and xhci hcd */ |
32 | #include "xhci-ext-caps.h" | |
33 | ||
34 | /* xHCI PCI Configuration Registers */ | |
35 | #define XHCI_SBRN_OFFSET (0x60) | |
36 | ||
66d4eadd SS |
37 | /* Max number of USB devices for any host controller - limit in section 6.1 */ |
38 | #define MAX_HC_SLOTS 256 | |
0f2a7930 SS |
39 | /* Section 5.3.3 - MaxPorts */ |
40 | #define MAX_HC_PORTS 127 | |
66d4eadd | 41 | |
74c68741 SS |
42 | /* |
43 | * xHCI register interface. | |
44 | * This corresponds to the eXtensible Host Controller Interface (xHCI) | |
45 | * Revision 0.95 specification | |
74c68741 SS |
46 | */ |
47 | ||
48 | /** | |
49 | * struct xhci_cap_regs - xHCI Host Controller Capability Registers. | |
50 | * @hc_capbase: length of the capabilities register and HC version number | |
51 | * @hcs_params1: HCSPARAMS1 - Structural Parameters 1 | |
52 | * @hcs_params2: HCSPARAMS2 - Structural Parameters 2 | |
53 | * @hcs_params3: HCSPARAMS3 - Structural Parameters 3 | |
54 | * @hcc_params: HCCPARAMS - Capability Parameters | |
55 | * @db_off: DBOFF - Doorbell array offset | |
56 | * @run_regs_off: RTSOFF - Runtime register space offset | |
57 | */ | |
58 | struct xhci_cap_regs { | |
59 | u32 hc_capbase; | |
60 | u32 hcs_params1; | |
61 | u32 hcs_params2; | |
62 | u32 hcs_params3; | |
63 | u32 hcc_params; | |
64 | u32 db_off; | |
65 | u32 run_regs_off; | |
66 | /* Reserved up to (CAPLENGTH - 0x1C) */ | |
98441973 | 67 | }; |
74c68741 SS |
68 | |
69 | /* hc_capbase bitmasks */ | |
70 | /* bits 7:0 - how long is the Capabilities register */ | |
71 | #define HC_LENGTH(p) XHCI_HC_LENGTH(p) | |
72 | /* bits 31:16 */ | |
73 | #define HC_VERSION(p) (((p) >> 16) & 0xffff) | |
74 | ||
75 | /* HCSPARAMS1 - hcs_params1 - bitmasks */ | |
76 | /* bits 0:7, Max Device Slots */ | |
77 | #define HCS_MAX_SLOTS(p) (((p) >> 0) & 0xff) | |
78 | #define HCS_SLOTS_MASK 0xff | |
79 | /* bits 8:18, Max Interrupters */ | |
80 | #define HCS_MAX_INTRS(p) (((p) >> 8) & 0x7ff) | |
81 | /* bits 24:31, Max Ports - max value is 0x7F = 127 ports */ | |
82 | #define HCS_MAX_PORTS(p) (((p) >> 24) & 0x7f) | |
83 | ||
84 | /* HCSPARAMS2 - hcs_params2 - bitmasks */ | |
85 | /* bits 0:3, frames or uframes that SW needs to queue transactions | |
86 | * ahead of the HW to meet periodic deadlines */ | |
87 | #define HCS_IST(p) (((p) >> 0) & 0xf) | |
88 | /* bits 4:7, max number of Event Ring segments */ | |
89 | #define HCS_ERST_MAX(p) (((p) >> 4) & 0xf) | |
90 | /* bit 26 Scratchpad restore - for save/restore HW state - not used yet */ | |
91 | /* bits 27:31 number of Scratchpad buffers SW must allocate for the HW */ | |
254c80a3 | 92 | #define HCS_MAX_SCRATCHPAD(p) (((p) >> 27) & 0x1f) |
74c68741 SS |
93 | |
94 | /* HCSPARAMS3 - hcs_params3 - bitmasks */ | |
95 | /* bits 0:7, Max U1 to U0 latency for the roothub ports */ | |
96 | #define HCS_U1_LATENCY(p) (((p) >> 0) & 0xff) | |
97 | /* bits 16:31, Max U2 to U0 latency for the roothub ports */ | |
98 | #define HCS_U2_LATENCY(p) (((p) >> 16) & 0xffff) | |
99 | ||
100 | /* HCCPARAMS - hcc_params - bitmasks */ | |
101 | /* true: HC can use 64-bit address pointers */ | |
102 | #define HCC_64BIT_ADDR(p) ((p) & (1 << 0)) | |
103 | /* true: HC can do bandwidth negotiation */ | |
104 | #define HCC_BANDWIDTH_NEG(p) ((p) & (1 << 1)) | |
105 | /* true: HC uses 64-byte Device Context structures | |
106 | * FIXME 64-byte context structures aren't supported yet. | |
107 | */ | |
108 | #define HCC_64BYTE_CONTEXT(p) ((p) & (1 << 2)) | |
109 | /* true: HC has port power switches */ | |
110 | #define HCC_PPC(p) ((p) & (1 << 3)) | |
111 | /* true: HC has port indicators */ | |
112 | #define HCS_INDICATOR(p) ((p) & (1 << 4)) | |
113 | /* true: HC has Light HC Reset Capability */ | |
114 | #define HCC_LIGHT_RESET(p) ((p) & (1 << 5)) | |
115 | /* true: HC supports latency tolerance messaging */ | |
116 | #define HCC_LTC(p) ((p) & (1 << 6)) | |
117 | /* true: no secondary Stream ID Support */ | |
118 | #define HCC_NSS(p) ((p) & (1 << 7)) | |
119 | /* Max size for Primary Stream Arrays - 2^(n+1), where n is bits 12:15 */ | |
8df75f42 | 120 | #define HCC_MAX_PSA(p) (1 << ((((p) >> 12) & 0xf) + 1)) |
74c68741 SS |
121 | /* Extended Capabilities pointer from PCI base - section 5.3.6 */ |
122 | #define HCC_EXT_CAPS(p) XHCI_HCC_EXT_CAPS(p) | |
123 | ||
124 | /* db_off bitmask - bits 0:1 reserved */ | |
125 | #define DBOFF_MASK (~0x3) | |
126 | ||
127 | /* run_regs_off bitmask - bits 0:4 reserved */ | |
128 | #define RTSOFF_MASK (~0x1f) | |
129 | ||
130 | ||
131 | /* Number of registers per port */ | |
132 | #define NUM_PORT_REGS 4 | |
133 | ||
134 | /** | |
135 | * struct xhci_op_regs - xHCI Host Controller Operational Registers. | |
136 | * @command: USBCMD - xHC command register | |
137 | * @status: USBSTS - xHC status register | |
138 | * @page_size: This indicates the page size that the host controller | |
139 | * supports. If bit n is set, the HC supports a page size | |
140 | * of 2^(n+12), up to a 128MB page size. | |
141 | * 4K is the minimum page size. | |
142 | * @cmd_ring: CRP - 64-bit Command Ring Pointer | |
143 | * @dcbaa_ptr: DCBAAP - 64-bit Device Context Base Address Array Pointer | |
144 | * @config_reg: CONFIG - Configure Register | |
145 | * @port_status_base: PORTSCn - base address for Port Status and Control | |
146 | * Each port has a Port Status and Control register, | |
147 | * followed by a Port Power Management Status and Control | |
148 | * register, a Port Link Info register, and a reserved | |
149 | * register. | |
150 | * @port_power_base: PORTPMSCn - base address for | |
151 | * Port Power Management Status and Control | |
152 | * @port_link_base: PORTLIn - base address for Port Link Info (current | |
153 | * Link PM state and control) for USB 2.1 and USB 3.0 | |
154 | * devices. | |
155 | */ | |
156 | struct xhci_op_regs { | |
157 | u32 command; | |
158 | u32 status; | |
159 | u32 page_size; | |
160 | u32 reserved1; | |
161 | u32 reserved2; | |
162 | u32 dev_notification; | |
8e595a5d | 163 | u64 cmd_ring; |
74c68741 SS |
164 | /* rsvd: offset 0x20-2F */ |
165 | u32 reserved3[4]; | |
8e595a5d | 166 | u64 dcbaa_ptr; |
74c68741 SS |
167 | u32 config_reg; |
168 | /* rsvd: offset 0x3C-3FF */ | |
169 | u32 reserved4[241]; | |
170 | /* port 1 registers, which serve as a base address for other ports */ | |
171 | u32 port_status_base; | |
172 | u32 port_power_base; | |
173 | u32 port_link_base; | |
174 | u32 reserved5; | |
175 | /* registers for ports 2-255 */ | |
176 | u32 reserved6[NUM_PORT_REGS*254]; | |
98441973 | 177 | }; |
74c68741 SS |
178 | |
179 | /* USBCMD - USB command - command bitmasks */ | |
180 | /* start/stop HC execution - do not write unless HC is halted*/ | |
181 | #define CMD_RUN XHCI_CMD_RUN | |
182 | /* Reset HC - resets internal HC state machine and all registers (except | |
183 | * PCI config regs). HC does NOT drive a USB reset on the downstream ports. | |
184 | * The xHCI driver must reinitialize the xHC after setting this bit. | |
185 | */ | |
186 | #define CMD_RESET (1 << 1) | |
187 | /* Event Interrupt Enable - a '1' allows interrupts from the host controller */ | |
188 | #define CMD_EIE XHCI_CMD_EIE | |
189 | /* Host System Error Interrupt Enable - get out-of-band signal for HC errors */ | |
190 | #define CMD_HSEIE XHCI_CMD_HSEIE | |
191 | /* bits 4:6 are reserved (and should be preserved on writes). */ | |
192 | /* light reset (port status stays unchanged) - reset completed when this is 0 */ | |
193 | #define CMD_LRESET (1 << 7) | |
5535b1d5 | 194 | /* host controller save/restore state. */ |
74c68741 SS |
195 | #define CMD_CSS (1 << 8) |
196 | #define CMD_CRS (1 << 9) | |
197 | /* Enable Wrap Event - '1' means xHC generates an event when MFINDEX wraps. */ | |
198 | #define CMD_EWE XHCI_CMD_EWE | |
199 | /* MFINDEX power management - '1' means xHC can stop MFINDEX counter if all root | |
200 | * hubs are in U3 (selective suspend), disconnect, disabled, or powered-off. | |
201 | * '0' means the xHC can power it off if all ports are in the disconnect, | |
202 | * disabled, or powered-off state. | |
203 | */ | |
204 | #define CMD_PM_INDEX (1 << 11) | |
205 | /* bits 12:31 are reserved (and should be preserved on writes). */ | |
206 | ||
207 | /* USBSTS - USB status - status bitmasks */ | |
208 | /* HC not running - set to 1 when run/stop bit is cleared. */ | |
209 | #define STS_HALT XHCI_STS_HALT | |
210 | /* serious error, e.g. PCI parity error. The HC will clear the run/stop bit. */ | |
211 | #define STS_FATAL (1 << 2) | |
212 | /* event interrupt - clear this prior to clearing any IP flags in IR set*/ | |
213 | #define STS_EINT (1 << 3) | |
214 | /* port change detect */ | |
215 | #define STS_PORT (1 << 4) | |
216 | /* bits 5:7 reserved and zeroed */ | |
217 | /* save state status - '1' means xHC is saving state */ | |
218 | #define STS_SAVE (1 << 8) | |
219 | /* restore state status - '1' means xHC is restoring state */ | |
220 | #define STS_RESTORE (1 << 9) | |
221 | /* true: save or restore error */ | |
222 | #define STS_SRE (1 << 10) | |
223 | /* true: Controller Not Ready to accept doorbell or op reg writes after reset */ | |
224 | #define STS_CNR XHCI_STS_CNR | |
225 | /* true: internal Host Controller Error - SW needs to reset and reinitialize */ | |
226 | #define STS_HCE (1 << 12) | |
227 | /* bits 13:31 reserved and should be preserved */ | |
228 | ||
229 | /* | |
230 | * DNCTRL - Device Notification Control Register - dev_notification bitmasks | |
231 | * Generate a device notification event when the HC sees a transaction with a | |
232 | * notification type that matches a bit set in this bit field. | |
233 | */ | |
234 | #define DEV_NOTE_MASK (0xffff) | |
235 | #define ENABLE_DEV_NOTE(x) (1 << x) | |
236 | /* Most of the device notification types should only be used for debug. | |
237 | * SW does need to pay attention to function wake notifications. | |
238 | */ | |
239 | #define DEV_NOTE_FWAKE ENABLE_DEV_NOTE(1) | |
240 | ||
0ebbab37 SS |
241 | /* CRCR - Command Ring Control Register - cmd_ring bitmasks */ |
242 | /* bit 0 is the command ring cycle state */ | |
243 | /* stop ring operation after completion of the currently executing command */ | |
244 | #define CMD_RING_PAUSE (1 << 1) | |
245 | /* stop ring immediately - abort the currently executing command */ | |
246 | #define CMD_RING_ABORT (1 << 2) | |
247 | /* true: command ring is running */ | |
248 | #define CMD_RING_RUNNING (1 << 3) | |
249 | /* bits 4:5 reserved and should be preserved */ | |
250 | /* Command Ring pointer - bit mask for the lower 32 bits. */ | |
8e595a5d | 251 | #define CMD_RING_RSVD_BITS (0x3f) |
0ebbab37 | 252 | |
74c68741 SS |
253 | /* CONFIG - Configure Register - config_reg bitmasks */ |
254 | /* bits 0:7 - maximum number of device slots enabled (NumSlotsEn) */ | |
255 | #define MAX_DEVS(p) ((p) & 0xff) | |
256 | /* bits 8:31 - reserved and should be preserved */ | |
257 | ||
258 | /* PORTSC - Port Status and Control Register - port_status_base bitmasks */ | |
259 | /* true: device connected */ | |
260 | #define PORT_CONNECT (1 << 0) | |
261 | /* true: port enabled */ | |
262 | #define PORT_PE (1 << 1) | |
263 | /* bit 2 reserved and zeroed */ | |
264 | /* true: port has an over-current condition */ | |
265 | #define PORT_OC (1 << 3) | |
266 | /* true: port reset signaling asserted */ | |
267 | #define PORT_RESET (1 << 4) | |
268 | /* Port Link State - bits 5:8 | |
269 | * A read gives the current link PM state of the port, | |
270 | * a write with Link State Write Strobe set sets the link state. | |
271 | */ | |
be88fe4f AX |
272 | #define PORT_PLS_MASK (0xf << 5) |
273 | #define XDEV_U0 (0x0 << 5) | |
274 | #define XDEV_U3 (0x3 << 5) | |
275 | #define XDEV_RESUME (0xf << 5) | |
74c68741 SS |
276 | /* true: port has power (see HCC_PPC) */ |
277 | #define PORT_POWER (1 << 9) | |
278 | /* bits 10:13 indicate device speed: | |
279 | * 0 - undefined speed - port hasn't be initialized by a reset yet | |
280 | * 1 - full speed | |
281 | * 2 - low speed | |
282 | * 3 - high speed | |
283 | * 4 - super speed | |
284 | * 5-15 reserved | |
285 | */ | |
3ffbba95 SS |
286 | #define DEV_SPEED_MASK (0xf << 10) |
287 | #define XDEV_FS (0x1 << 10) | |
288 | #define XDEV_LS (0x2 << 10) | |
289 | #define XDEV_HS (0x3 << 10) | |
290 | #define XDEV_SS (0x4 << 10) | |
74c68741 | 291 | #define DEV_UNDEFSPEED(p) (((p) & DEV_SPEED_MASK) == (0x0<<10)) |
3ffbba95 SS |
292 | #define DEV_FULLSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_FS) |
293 | #define DEV_LOWSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_LS) | |
294 | #define DEV_HIGHSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_HS) | |
295 | #define DEV_SUPERSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_SS) | |
296 | /* Bits 20:23 in the Slot Context are the speed for the device */ | |
297 | #define SLOT_SPEED_FS (XDEV_FS << 10) | |
298 | #define SLOT_SPEED_LS (XDEV_LS << 10) | |
299 | #define SLOT_SPEED_HS (XDEV_HS << 10) | |
300 | #define SLOT_SPEED_SS (XDEV_SS << 10) | |
74c68741 SS |
301 | /* Port Indicator Control */ |
302 | #define PORT_LED_OFF (0 << 14) | |
303 | #define PORT_LED_AMBER (1 << 14) | |
304 | #define PORT_LED_GREEN (2 << 14) | |
305 | #define PORT_LED_MASK (3 << 14) | |
306 | /* Port Link State Write Strobe - set this when changing link state */ | |
307 | #define PORT_LINK_STROBE (1 << 16) | |
308 | /* true: connect status change */ | |
309 | #define PORT_CSC (1 << 17) | |
310 | /* true: port enable change */ | |
311 | #define PORT_PEC (1 << 18) | |
312 | /* true: warm reset for a USB 3.0 device is done. A "hot" reset puts the port | |
313 | * into an enabled state, and the device into the default state. A "warm" reset | |
314 | * also resets the link, forcing the device through the link training sequence. | |
315 | * SW can also look at the Port Reset register to see when warm reset is done. | |
316 | */ | |
317 | #define PORT_WRC (1 << 19) | |
318 | /* true: over-current change */ | |
319 | #define PORT_OCC (1 << 20) | |
320 | /* true: reset change - 1 to 0 transition of PORT_RESET */ | |
321 | #define PORT_RC (1 << 21) | |
322 | /* port link status change - set on some port link state transitions: | |
323 | * Transition Reason | |
324 | * ------------------------------------------------------------------------------ | |
325 | * - U3 to Resume Wakeup signaling from a device | |
326 | * - Resume to Recovery to U0 USB 3.0 device resume | |
327 | * - Resume to U0 USB 2.0 device resume | |
328 | * - U3 to Recovery to U0 Software resume of USB 3.0 device complete | |
329 | * - U3 to U0 Software resume of USB 2.0 device complete | |
330 | * - U2 to U0 L1 resume of USB 2.1 device complete | |
331 | * - U0 to U0 (???) L1 entry rejection by USB 2.1 device | |
332 | * - U0 to disabled L1 entry error with USB 2.1 device | |
333 | * - Any state to inactive Error on USB 3.0 port | |
334 | */ | |
335 | #define PORT_PLC (1 << 22) | |
336 | /* port configure error change - port failed to configure its link partner */ | |
337 | #define PORT_CEC (1 << 23) | |
338 | /* bit 24 reserved */ | |
339 | /* wake on connect (enable) */ | |
340 | #define PORT_WKCONN_E (1 << 25) | |
341 | /* wake on disconnect (enable) */ | |
342 | #define PORT_WKDISC_E (1 << 26) | |
343 | /* wake on over-current (enable) */ | |
344 | #define PORT_WKOC_E (1 << 27) | |
345 | /* bits 28:29 reserved */ | |
346 | /* true: device is removable - for USB 3.0 roothub emulation */ | |
347 | #define PORT_DEV_REMOVE (1 << 30) | |
348 | /* Initiate a warm port reset - complete when PORT_WRC is '1' */ | |
349 | #define PORT_WR (1 << 31) | |
350 | ||
351 | /* Port Power Management Status and Control - port_power_base bitmasks */ | |
352 | /* Inactivity timer value for transitions into U1, in microseconds. | |
353 | * Timeout can be up to 127us. 0xFF means an infinite timeout. | |
354 | */ | |
355 | #define PORT_U1_TIMEOUT(p) ((p) & 0xff) | |
356 | /* Inactivity timer value for transitions into U2 */ | |
357 | #define PORT_U2_TIMEOUT(p) (((p) & 0xff) << 8) | |
358 | /* Bits 24:31 for port testing */ | |
359 | ||
9777e3ce AX |
360 | /* USB2 Protocol PORTSPMSC */ |
361 | #define PORT_RWE (1 << 0x3) | |
74c68741 SS |
362 | |
363 | /** | |
98441973 | 364 | * struct xhci_intr_reg - Interrupt Register Set |
74c68741 SS |
365 | * @irq_pending: IMAN - Interrupt Management Register. Used to enable |
366 | * interrupts and check for pending interrupts. | |
367 | * @irq_control: IMOD - Interrupt Moderation Register. | |
368 | * Used to throttle interrupts. | |
369 | * @erst_size: Number of segments in the Event Ring Segment Table (ERST). | |
370 | * @erst_base: ERST base address. | |
371 | * @erst_dequeue: Event ring dequeue pointer. | |
372 | * | |
373 | * Each interrupter (defined by a MSI-X vector) has an event ring and an Event | |
374 | * Ring Segment Table (ERST) associated with it. The event ring is comprised of | |
375 | * multiple segments of the same size. The HC places events on the ring and | |
376 | * "updates the Cycle bit in the TRBs to indicate to software the current | |
377 | * position of the Enqueue Pointer." The HCD (Linux) processes those events and | |
378 | * updates the dequeue pointer. | |
379 | */ | |
98441973 | 380 | struct xhci_intr_reg { |
74c68741 SS |
381 | u32 irq_pending; |
382 | u32 irq_control; | |
383 | u32 erst_size; | |
384 | u32 rsvd; | |
8e595a5d SS |
385 | u64 erst_base; |
386 | u64 erst_dequeue; | |
98441973 | 387 | }; |
74c68741 | 388 | |
66d4eadd | 389 | /* irq_pending bitmasks */ |
74c68741 | 390 | #define ER_IRQ_PENDING(p) ((p) & 0x1) |
66d4eadd | 391 | /* bits 2:31 need to be preserved */ |
7f84eef0 | 392 | /* THIS IS BUGGY - FIXME - IP IS WRITE 1 TO CLEAR */ |
66d4eadd SS |
393 | #define ER_IRQ_CLEAR(p) ((p) & 0xfffffffe) |
394 | #define ER_IRQ_ENABLE(p) ((ER_IRQ_CLEAR(p)) | 0x2) | |
395 | #define ER_IRQ_DISABLE(p) ((ER_IRQ_CLEAR(p)) & ~(0x2)) | |
396 | ||
397 | /* irq_control bitmasks */ | |
398 | /* Minimum interval between interrupts (in 250ns intervals). The interval | |
399 | * between interrupts will be longer if there are no events on the event ring. | |
400 | * Default is 4000 (1 ms). | |
401 | */ | |
402 | #define ER_IRQ_INTERVAL_MASK (0xffff) | |
403 | /* Counter used to count down the time to the next interrupt - HW use only */ | |
404 | #define ER_IRQ_COUNTER_MASK (0xffff << 16) | |
405 | ||
406 | /* erst_size bitmasks */ | |
74c68741 | 407 | /* Preserve bits 16:31 of erst_size */ |
66d4eadd SS |
408 | #define ERST_SIZE_MASK (0xffff << 16) |
409 | ||
410 | /* erst_dequeue bitmasks */ | |
411 | /* Dequeue ERST Segment Index (DESI) - Segment number (or alias) | |
412 | * where the current dequeue pointer lies. This is an optional HW hint. | |
413 | */ | |
414 | #define ERST_DESI_MASK (0x7) | |
415 | /* Event Handler Busy (EHB) - is the event ring scheduled to be serviced by | |
416 | * a work queue (or delayed service routine)? | |
417 | */ | |
418 | #define ERST_EHB (1 << 3) | |
0ebbab37 | 419 | #define ERST_PTR_MASK (0xf) |
74c68741 SS |
420 | |
421 | /** | |
422 | * struct xhci_run_regs | |
423 | * @microframe_index: | |
424 | * MFINDEX - current microframe number | |
425 | * | |
426 | * Section 5.5 Host Controller Runtime Registers: | |
427 | * "Software should read and write these registers using only Dword (32 bit) | |
428 | * or larger accesses" | |
429 | */ | |
430 | struct xhci_run_regs { | |
98441973 SS |
431 | u32 microframe_index; |
432 | u32 rsvd[7]; | |
433 | struct xhci_intr_reg ir_set[128]; | |
434 | }; | |
74c68741 | 435 | |
0ebbab37 SS |
436 | /** |
437 | * struct doorbell_array | |
438 | * | |
50d64676 MW |
439 | * Bits 0 - 7: Endpoint target |
440 | * Bits 8 - 15: RsvdZ | |
441 | * Bits 16 - 31: Stream ID | |
442 | * | |
0ebbab37 SS |
443 | * Section 5.6 |
444 | */ | |
445 | struct xhci_doorbell_array { | |
446 | u32 doorbell[256]; | |
98441973 | 447 | }; |
0ebbab37 | 448 | |
50d64676 MW |
449 | #define DB_VALUE(ep, stream) ((((ep) + 1) & 0xff) | ((stream) << 16)) |
450 | #define DB_VALUE_HOST 0x00000000 | |
0ebbab37 | 451 | |
da6699ce SS |
452 | /** |
453 | * struct xhci_protocol_caps | |
454 | * @revision: major revision, minor revision, capability ID, | |
455 | * and next capability pointer. | |
456 | * @name_string: Four ASCII characters to say which spec this xHC | |
457 | * follows, typically "USB ". | |
458 | * @port_info: Port offset, count, and protocol-defined information. | |
459 | */ | |
460 | struct xhci_protocol_caps { | |
461 | u32 revision; | |
462 | u32 name_string; | |
463 | u32 port_info; | |
464 | }; | |
465 | ||
466 | #define XHCI_EXT_PORT_MAJOR(x) (((x) >> 24) & 0xff) | |
467 | #define XHCI_EXT_PORT_OFF(x) ((x) & 0xff) | |
468 | #define XHCI_EXT_PORT_COUNT(x) (((x) >> 8) & 0xff) | |
469 | ||
d115b048 JY |
470 | /** |
471 | * struct xhci_container_ctx | |
472 | * @type: Type of context. Used to calculated offsets to contained contexts. | |
473 | * @size: Size of the context data | |
474 | * @bytes: The raw context data given to HW | |
475 | * @dma: dma address of the bytes | |
476 | * | |
477 | * Represents either a Device or Input context. Holds a pointer to the raw | |
478 | * memory used for the context (bytes) and dma address of it (dma). | |
479 | */ | |
480 | struct xhci_container_ctx { | |
481 | unsigned type; | |
482 | #define XHCI_CTX_TYPE_DEVICE 0x1 | |
483 | #define XHCI_CTX_TYPE_INPUT 0x2 | |
484 | ||
485 | int size; | |
486 | ||
487 | u8 *bytes; | |
488 | dma_addr_t dma; | |
489 | }; | |
490 | ||
a74588f9 SS |
491 | /** |
492 | * struct xhci_slot_ctx | |
493 | * @dev_info: Route string, device speed, hub info, and last valid endpoint | |
494 | * @dev_info2: Max exit latency for device number, root hub port number | |
495 | * @tt_info: tt_info is used to construct split transaction tokens | |
496 | * @dev_state: slot state and device address | |
497 | * | |
498 | * Slot Context - section 6.2.1.1. This assumes the HC uses 32-byte context | |
499 | * structures. If the HC uses 64-byte contexts, there is an additional 32 bytes | |
500 | * reserved at the end of the slot context for HC internal use. | |
501 | */ | |
502 | struct xhci_slot_ctx { | |
503 | u32 dev_info; | |
504 | u32 dev_info2; | |
505 | u32 tt_info; | |
506 | u32 dev_state; | |
507 | /* offset 0x10 to 0x1f reserved for HC internal use */ | |
508 | u32 reserved[4]; | |
98441973 | 509 | }; |
a74588f9 SS |
510 | |
511 | /* dev_info bitmasks */ | |
512 | /* Route String - 0:19 */ | |
513 | #define ROUTE_STRING_MASK (0xfffff) | |
514 | /* Device speed - values defined by PORTSC Device Speed field - 20:23 */ | |
515 | #define DEV_SPEED (0xf << 20) | |
516 | /* bit 24 reserved */ | |
517 | /* Is this LS/FS device connected through a HS hub? - bit 25 */ | |
518 | #define DEV_MTT (0x1 << 25) | |
519 | /* Set if the device is a hub - bit 26 */ | |
520 | #define DEV_HUB (0x1 << 26) | |
521 | /* Index of the last valid endpoint context in this device context - 27:31 */ | |
3ffbba95 SS |
522 | #define LAST_CTX_MASK (0x1f << 27) |
523 | #define LAST_CTX(p) ((p) << 27) | |
524 | #define LAST_CTX_TO_EP_NUM(p) (((p) >> 27) - 1) | |
3ffbba95 SS |
525 | #define SLOT_FLAG (1 << 0) |
526 | #define EP0_FLAG (1 << 1) | |
a74588f9 SS |
527 | |
528 | /* dev_info2 bitmasks */ | |
529 | /* Max Exit Latency (ms) - worst case time to wake up all links in dev path */ | |
530 | #define MAX_EXIT (0xffff) | |
531 | /* Root hub port number that is needed to access the USB device */ | |
3ffbba95 | 532 | #define ROOT_HUB_PORT(p) (((p) & 0xff) << 16) |
be88fe4f | 533 | #define DEVINFO_TO_ROOT_HUB_PORT(p) (((p) >> 16) & 0xff) |
ac1c1b7f SS |
534 | /* Maximum number of ports under a hub device */ |
535 | #define XHCI_MAX_PORTS(p) (((p) & 0xff) << 24) | |
a74588f9 SS |
536 | |
537 | /* tt_info bitmasks */ | |
538 | /* | |
539 | * TT Hub Slot ID - for low or full speed devices attached to a high-speed hub | |
540 | * The Slot ID of the hub that isolates the high speed signaling from | |
541 | * this low or full-speed device. '0' if attached to root hub port. | |
542 | */ | |
543 | #define TT_SLOT (0xff) | |
544 | /* | |
545 | * The number of the downstream facing port of the high-speed hub | |
546 | * '0' if the device is not low or full speed. | |
547 | */ | |
548 | #define TT_PORT (0xff << 8) | |
ac1c1b7f | 549 | #define TT_THINK_TIME(p) (((p) & 0x3) << 16) |
a74588f9 SS |
550 | |
551 | /* dev_state bitmasks */ | |
552 | /* USB device address - assigned by the HC */ | |
3ffbba95 | 553 | #define DEV_ADDR_MASK (0xff) |
a74588f9 SS |
554 | /* bits 8:26 reserved */ |
555 | /* Slot state */ | |
556 | #define SLOT_STATE (0x1f << 27) | |
ae636747 | 557 | #define GET_SLOT_STATE(p) (((p) & (0x1f << 27)) >> 27) |
a74588f9 SS |
558 | |
559 | ||
560 | /** | |
561 | * struct xhci_ep_ctx | |
562 | * @ep_info: endpoint state, streams, mult, and interval information. | |
563 | * @ep_info2: information on endpoint type, max packet size, max burst size, | |
564 | * error count, and whether the HC will force an event for all | |
565 | * transactions. | |
3ffbba95 SS |
566 | * @deq: 64-bit ring dequeue pointer address. If the endpoint only |
567 | * defines one stream, this points to the endpoint transfer ring. | |
568 | * Otherwise, it points to a stream context array, which has a | |
569 | * ring pointer for each flow. | |
570 | * @tx_info: | |
571 | * Average TRB lengths for the endpoint ring and | |
572 | * max payload within an Endpoint Service Interval Time (ESIT). | |
a74588f9 SS |
573 | * |
574 | * Endpoint Context - section 6.2.1.2. This assumes the HC uses 32-byte context | |
575 | * structures. If the HC uses 64-byte contexts, there is an additional 32 bytes | |
576 | * reserved at the end of the endpoint context for HC internal use. | |
577 | */ | |
578 | struct xhci_ep_ctx { | |
579 | u32 ep_info; | |
580 | u32 ep_info2; | |
8e595a5d | 581 | u64 deq; |
3ffbba95 | 582 | u32 tx_info; |
a74588f9 | 583 | /* offset 0x14 - 0x1f reserved for HC internal use */ |
3ffbba95 | 584 | u32 reserved[3]; |
98441973 | 585 | }; |
a74588f9 SS |
586 | |
587 | /* ep_info bitmasks */ | |
588 | /* | |
589 | * Endpoint State - bits 0:2 | |
590 | * 0 - disabled | |
591 | * 1 - running | |
592 | * 2 - halted due to halt condition - ok to manipulate endpoint ring | |
593 | * 3 - stopped | |
594 | * 4 - TRB error | |
595 | * 5-7 - reserved | |
596 | */ | |
d0e96f5a SS |
597 | #define EP_STATE_MASK (0xf) |
598 | #define EP_STATE_DISABLED 0 | |
599 | #define EP_STATE_RUNNING 1 | |
600 | #define EP_STATE_HALTED 2 | |
601 | #define EP_STATE_STOPPED 3 | |
602 | #define EP_STATE_ERROR 4 | |
a74588f9 SS |
603 | /* Mult - Max number of burtst within an interval, in EP companion desc. */ |
604 | #define EP_MULT(p) ((p & 0x3) << 8) | |
605 | /* bits 10:14 are Max Primary Streams */ | |
606 | /* bit 15 is Linear Stream Array */ | |
607 | /* Interval - period between requests to an endpoint - 125u increments. */ | |
f94e0186 | 608 | #define EP_INTERVAL(p) ((p & 0xff) << 16) |
624defa1 | 609 | #define EP_INTERVAL_TO_UFRAMES(p) (1 << (((p) >> 16) & 0xff)) |
8df75f42 SS |
610 | #define EP_MAXPSTREAMS_MASK (0x1f << 10) |
611 | #define EP_MAXPSTREAMS(p) (((p) << 10) & EP_MAXPSTREAMS_MASK) | |
612 | /* Endpoint is set up with a Linear Stream Array (vs. Secondary Stream Array) */ | |
613 | #define EP_HAS_LSA (1 << 15) | |
a74588f9 SS |
614 | |
615 | /* ep_info2 bitmasks */ | |
616 | /* | |
617 | * Force Event - generate transfer events for all TRBs for this endpoint | |
618 | * This will tell the HC to ignore the IOC and ISP flags (for debugging only). | |
619 | */ | |
620 | #define FORCE_EVENT (0x1) | |
621 | #define ERROR_COUNT(p) (((p) & 0x3) << 1) | |
82d1009f | 622 | #define CTX_TO_EP_TYPE(p) (((p) >> 3) & 0x7) |
a74588f9 SS |
623 | #define EP_TYPE(p) ((p) << 3) |
624 | #define ISOC_OUT_EP 1 | |
625 | #define BULK_OUT_EP 2 | |
626 | #define INT_OUT_EP 3 | |
627 | #define CTRL_EP 4 | |
628 | #define ISOC_IN_EP 5 | |
629 | #define BULK_IN_EP 6 | |
630 | #define INT_IN_EP 7 | |
631 | /* bit 6 reserved */ | |
632 | /* bit 7 is Host Initiate Disable - for disabling stream selection */ | |
633 | #define MAX_BURST(p) (((p)&0xff) << 8) | |
634 | #define MAX_PACKET(p) (((p)&0xffff) << 16) | |
2d3f1fac SS |
635 | #define MAX_PACKET_MASK (0xffff << 16) |
636 | #define MAX_PACKET_DECODED(p) (((p) >> 16) & 0xffff) | |
a74588f9 | 637 | |
dc07c91b AX |
638 | /* Get max packet size from ep desc. Bit 10..0 specify the max packet size. |
639 | * USB2.0 spec 9.6.6. | |
640 | */ | |
641 | #define GET_MAX_PACKET(p) ((p) & 0x7ff) | |
642 | ||
9238f25d SS |
643 | /* tx_info bitmasks */ |
644 | #define AVG_TRB_LENGTH_FOR_EP(p) ((p) & 0xffff) | |
645 | #define MAX_ESIT_PAYLOAD_FOR_EP(p) (((p) & 0xffff) << 16) | |
646 | ||
a74588f9 SS |
647 | |
648 | /** | |
d115b048 JY |
649 | * struct xhci_input_control_context |
650 | * Input control context; see section 6.2.5. | |
a74588f9 SS |
651 | * |
652 | * @drop_context: set the bit of the endpoint context you want to disable | |
653 | * @add_context: set the bit of the endpoint context you want to enable | |
654 | */ | |
d115b048 | 655 | struct xhci_input_control_ctx { |
a74588f9 SS |
656 | u32 drop_flags; |
657 | u32 add_flags; | |
d115b048 | 658 | u32 rsvd2[6]; |
98441973 | 659 | }; |
a74588f9 | 660 | |
913a8a34 SS |
661 | /* Represents everything that is needed to issue a command on the command ring. |
662 | * It's useful to pre-allocate these for commands that cannot fail due to | |
663 | * out-of-memory errors, like freeing streams. | |
664 | */ | |
665 | struct xhci_command { | |
666 | /* Input context for changing device state */ | |
667 | struct xhci_container_ctx *in_ctx; | |
668 | u32 status; | |
669 | /* If completion is null, no one is waiting on this command | |
670 | * and the structure can be freed after the command completes. | |
671 | */ | |
672 | struct completion *completion; | |
673 | union xhci_trb *command_trb; | |
674 | struct list_head cmd_list; | |
675 | }; | |
676 | ||
a74588f9 SS |
677 | /* drop context bitmasks */ |
678 | #define DROP_EP(x) (0x1 << x) | |
679 | /* add context bitmasks */ | |
680 | #define ADD_EP(x) (0x1 << x) | |
681 | ||
8df75f42 SS |
682 | struct xhci_stream_ctx { |
683 | /* 64-bit stream ring address, cycle state, and stream type */ | |
684 | u64 stream_ring; | |
685 | /* offset 0x14 - 0x1f reserved for HC internal use */ | |
686 | u32 reserved[2]; | |
687 | }; | |
688 | ||
689 | /* Stream Context Types (section 6.4.1) - bits 3:1 of stream ctx deq ptr */ | |
690 | #define SCT_FOR_CTX(p) (((p) << 1) & 0x7) | |
691 | /* Secondary stream array type, dequeue pointer is to a transfer ring */ | |
692 | #define SCT_SEC_TR 0 | |
693 | /* Primary stream array type, dequeue pointer is to a transfer ring */ | |
694 | #define SCT_PRI_TR 1 | |
695 | /* Dequeue pointer is for a secondary stream array (SSA) with 8 entries */ | |
696 | #define SCT_SSA_8 2 | |
697 | #define SCT_SSA_16 3 | |
698 | #define SCT_SSA_32 4 | |
699 | #define SCT_SSA_64 5 | |
700 | #define SCT_SSA_128 6 | |
701 | #define SCT_SSA_256 7 | |
702 | ||
703 | /* Assume no secondary streams for now */ | |
704 | struct xhci_stream_info { | |
705 | struct xhci_ring **stream_rings; | |
706 | /* Number of streams, including stream 0 (which drivers can't use) */ | |
707 | unsigned int num_streams; | |
708 | /* The stream context array may be bigger than | |
709 | * the number of streams the driver asked for | |
710 | */ | |
711 | struct xhci_stream_ctx *stream_ctx_array; | |
712 | unsigned int num_stream_ctxs; | |
713 | dma_addr_t ctx_array_dma; | |
714 | /* For mapping physical TRB addresses to segments in stream rings */ | |
715 | struct radix_tree_root trb_address_map; | |
716 | struct xhci_command *free_streams_command; | |
717 | }; | |
718 | ||
719 | #define SMALL_STREAM_ARRAY_SIZE 256 | |
720 | #define MEDIUM_STREAM_ARRAY_SIZE 1024 | |
721 | ||
63a0d9ab SS |
722 | struct xhci_virt_ep { |
723 | struct xhci_ring *ring; | |
8df75f42 SS |
724 | /* Related to endpoints that are configured to use stream IDs only */ |
725 | struct xhci_stream_info *stream_info; | |
63a0d9ab SS |
726 | /* Temporary storage in case the configure endpoint command fails and we |
727 | * have to restore the device state to the previous state | |
728 | */ | |
729 | struct xhci_ring *new_ring; | |
730 | unsigned int ep_state; | |
731 | #define SET_DEQ_PENDING (1 << 0) | |
678539cf SS |
732 | #define EP_HALTED (1 << 1) /* For stall handling */ |
733 | #define EP_HALT_PENDING (1 << 2) /* For URB cancellation */ | |
8df75f42 SS |
734 | /* Transitioning the endpoint to using streams, don't enqueue URBs */ |
735 | #define EP_GETTING_STREAMS (1 << 3) | |
736 | #define EP_HAS_STREAMS (1 << 4) | |
737 | /* Transitioning the endpoint to not using streams, don't enqueue URBs */ | |
738 | #define EP_GETTING_NO_STREAMS (1 << 5) | |
63a0d9ab SS |
739 | /* ---- Related to URB cancellation ---- */ |
740 | struct list_head cancelled_td_list; | |
63a0d9ab SS |
741 | /* The TRB that was last reported in a stopped endpoint ring */ |
742 | union xhci_trb *stopped_trb; | |
743 | struct xhci_td *stopped_td; | |
e9df17eb | 744 | unsigned int stopped_stream; |
6f5165cf SS |
745 | /* Watchdog timer for stop endpoint command to cancel URBs */ |
746 | struct timer_list stop_cmd_timer; | |
747 | int stop_cmds_pending; | |
748 | struct xhci_hcd *xhci; | |
d18240db AX |
749 | /* |
750 | * Sometimes the xHC can not process isochronous endpoint ring quickly | |
751 | * enough, and it will miss some isoc tds on the ring and generate | |
752 | * a Missed Service Error Event. | |
753 | * Set skip flag when receive a Missed Service Error Event and | |
754 | * process the missed tds on the endpoint ring. | |
755 | */ | |
756 | bool skip; | |
63a0d9ab SS |
757 | }; |
758 | ||
3ffbba95 | 759 | struct xhci_virt_device { |
64927730 | 760 | struct usb_device *udev; |
3ffbba95 SS |
761 | /* |
762 | * Commands to the hardware are passed an "input context" that | |
763 | * tells the hardware what to change in its data structures. | |
764 | * The hardware will return changes in an "output context" that | |
765 | * software must allocate for the hardware. We need to keep | |
766 | * track of input and output contexts separately because | |
767 | * these commands might fail and we don't trust the hardware. | |
768 | */ | |
d115b048 | 769 | struct xhci_container_ctx *out_ctx; |
3ffbba95 | 770 | /* Used for addressing devices and configuration changes */ |
d115b048 | 771 | struct xhci_container_ctx *in_ctx; |
74f9fe21 SS |
772 | /* Rings saved to ensure old alt settings can be re-instated */ |
773 | struct xhci_ring **ring_cache; | |
774 | int num_rings_cached; | |
c8d4af8e AX |
775 | /* Store xHC assigned device address */ |
776 | int address; | |
74f9fe21 | 777 | #define XHCI_MAX_RINGS_CACHED 31 |
63a0d9ab | 778 | struct xhci_virt_ep eps[31]; |
f94e0186 | 779 | struct completion cmd_completion; |
3ffbba95 SS |
780 | /* Status of the last command issued for this device */ |
781 | u32 cmd_status; | |
913a8a34 | 782 | struct list_head cmd_list; |
be88fe4f | 783 | u8 port; |
3ffbba95 SS |
784 | }; |
785 | ||
786 | ||
a74588f9 SS |
787 | /** |
788 | * struct xhci_device_context_array | |
789 | * @dev_context_ptr array of 64-bit DMA addresses for device contexts | |
790 | */ | |
791 | struct xhci_device_context_array { | |
792 | /* 64-bit device addresses; we only write 32-bit addresses */ | |
8e595a5d | 793 | u64 dev_context_ptrs[MAX_HC_SLOTS]; |
a74588f9 SS |
794 | /* private xHCD pointers */ |
795 | dma_addr_t dma; | |
98441973 | 796 | }; |
a74588f9 SS |
797 | /* TODO: write function to set the 64-bit device DMA address */ |
798 | /* | |
799 | * TODO: change this to be dynamically sized at HC mem init time since the HC | |
800 | * might not be able to handle the maximum number of devices possible. | |
801 | */ | |
802 | ||
803 | ||
0ebbab37 SS |
804 | struct xhci_transfer_event { |
805 | /* 64-bit buffer address, or immediate data */ | |
8e595a5d | 806 | u64 buffer; |
0ebbab37 SS |
807 | u32 transfer_len; |
808 | /* This field is interpreted differently based on the type of TRB */ | |
809 | u32 flags; | |
98441973 | 810 | }; |
0ebbab37 | 811 | |
d0e96f5a SS |
812 | /** Transfer Event bit fields **/ |
813 | #define TRB_TO_EP_ID(p) (((p) >> 16) & 0x1f) | |
814 | ||
0ebbab37 SS |
815 | /* Completion Code - only applicable for some types of TRBs */ |
816 | #define COMP_CODE_MASK (0xff << 24) | |
817 | #define GET_COMP_CODE(p) (((p) & COMP_CODE_MASK) >> 24) | |
818 | #define COMP_SUCCESS 1 | |
819 | /* Data Buffer Error */ | |
820 | #define COMP_DB_ERR 2 | |
821 | /* Babble Detected Error */ | |
822 | #define COMP_BABBLE 3 | |
823 | /* USB Transaction Error */ | |
824 | #define COMP_TX_ERR 4 | |
825 | /* TRB Error - some TRB field is invalid */ | |
826 | #define COMP_TRB_ERR 5 | |
827 | /* Stall Error - USB device is stalled */ | |
828 | #define COMP_STALL 6 | |
829 | /* Resource Error - HC doesn't have memory for that device configuration */ | |
830 | #define COMP_ENOMEM 7 | |
831 | /* Bandwidth Error - not enough room in schedule for this dev config */ | |
832 | #define COMP_BW_ERR 8 | |
833 | /* No Slots Available Error - HC ran out of device slots */ | |
834 | #define COMP_ENOSLOTS 9 | |
835 | /* Invalid Stream Type Error */ | |
836 | #define COMP_STREAM_ERR 10 | |
837 | /* Slot Not Enabled Error - doorbell rung for disabled device slot */ | |
838 | #define COMP_EBADSLT 11 | |
839 | /* Endpoint Not Enabled Error */ | |
840 | #define COMP_EBADEP 12 | |
841 | /* Short Packet */ | |
842 | #define COMP_SHORT_TX 13 | |
843 | /* Ring Underrun - doorbell rung for an empty isoc OUT ep ring */ | |
844 | #define COMP_UNDERRUN 14 | |
845 | /* Ring Overrun - isoc IN ep ring is empty when ep is scheduled to RX */ | |
846 | #define COMP_OVERRUN 15 | |
847 | /* Virtual Function Event Ring Full Error */ | |
848 | #define COMP_VF_FULL 16 | |
849 | /* Parameter Error - Context parameter is invalid */ | |
850 | #define COMP_EINVAL 17 | |
851 | /* Bandwidth Overrun Error - isoc ep exceeded its allocated bandwidth */ | |
852 | #define COMP_BW_OVER 18 | |
853 | /* Context State Error - illegal context state transition requested */ | |
854 | #define COMP_CTX_STATE 19 | |
855 | /* No Ping Response Error - HC didn't get PING_RESPONSE in time to TX */ | |
856 | #define COMP_PING_ERR 20 | |
857 | /* Event Ring is full */ | |
858 | #define COMP_ER_FULL 21 | |
859 | /* Missed Service Error - HC couldn't service an isoc ep within interval */ | |
860 | #define COMP_MISSED_INT 23 | |
861 | /* Successfully stopped command ring */ | |
862 | #define COMP_CMD_STOP 24 | |
863 | /* Successfully aborted current command and stopped command ring */ | |
864 | #define COMP_CMD_ABORT 25 | |
865 | /* Stopped - transfer was terminated by a stop endpoint command */ | |
866 | #define COMP_STOP 26 | |
867 | /* Same as COMP_EP_STOPPED, but the transfered length in the event is invalid */ | |
868 | #define COMP_STOP_INVAL 27 | |
869 | /* Control Abort Error - Debug Capability - control pipe aborted */ | |
870 | #define COMP_DBG_ABORT 28 | |
871 | /* TRB type 29 and 30 reserved */ | |
872 | /* Isoc Buffer Overrun - an isoc IN ep sent more data than could fit in TD */ | |
873 | #define COMP_BUFF_OVER 31 | |
874 | /* Event Lost Error - xHC has an "internal event overrun condition" */ | |
875 | #define COMP_ISSUES 32 | |
876 | /* Undefined Error - reported when other error codes don't apply */ | |
877 | #define COMP_UNKNOWN 33 | |
878 | /* Invalid Stream ID Error */ | |
879 | #define COMP_STRID_ERR 34 | |
880 | /* Secondary Bandwidth Error - may be returned by a Configure Endpoint cmd */ | |
881 | /* FIXME - check for this */ | |
882 | #define COMP_2ND_BW_ERR 35 | |
883 | /* Split Transaction Error */ | |
884 | #define COMP_SPLIT_ERR 36 | |
885 | ||
886 | struct xhci_link_trb { | |
887 | /* 64-bit segment pointer*/ | |
8e595a5d | 888 | u64 segment_ptr; |
0ebbab37 SS |
889 | u32 intr_target; |
890 | u32 control; | |
98441973 | 891 | }; |
0ebbab37 SS |
892 | |
893 | /* control bitfields */ | |
894 | #define LINK_TOGGLE (0x1<<1) | |
895 | ||
7f84eef0 SS |
896 | /* Command completion event TRB */ |
897 | struct xhci_event_cmd { | |
898 | /* Pointer to command TRB, or the value passed by the event data trb */ | |
8e595a5d | 899 | u64 cmd_trb; |
7f84eef0 SS |
900 | u32 status; |
901 | u32 flags; | |
98441973 | 902 | }; |
0ebbab37 | 903 | |
3ffbba95 SS |
904 | /* flags bitmasks */ |
905 | /* bits 16:23 are the virtual function ID */ | |
906 | /* bits 24:31 are the slot ID */ | |
907 | #define TRB_TO_SLOT_ID(p) (((p) & (0xff<<24)) >> 24) | |
908 | #define SLOT_ID_FOR_TRB(p) (((p) & 0xff) << 24) | |
0ebbab37 | 909 | |
ae636747 SS |
910 | /* Stop Endpoint TRB - ep_index to endpoint ID for this TRB */ |
911 | #define TRB_TO_EP_INDEX(p) ((((p) & (0x1f << 16)) >> 16) - 1) | |
912 | #define EP_ID_FOR_TRB(p) ((((p) + 1) & 0x1f) << 16) | |
913 | ||
be88fe4f AX |
914 | #define SUSPEND_PORT_FOR_TRB(p) (((p) & 1) << 23) |
915 | #define TRB_TO_SUSPEND_PORT(p) (((p) & (1 << 23)) >> 23) | |
916 | #define LAST_EP_INDEX 30 | |
917 | ||
e9df17eb SS |
918 | /* Set TR Dequeue Pointer command TRB fields */ |
919 | #define TRB_TO_STREAM_ID(p) ((((p) & (0xffff << 16)) >> 16)) | |
920 | #define STREAM_ID_FOR_TRB(p) ((((p)) & 0xffff) << 16) | |
921 | ||
ae636747 | 922 | |
0f2a7930 SS |
923 | /* Port Status Change Event TRB fields */ |
924 | /* Port ID - bits 31:24 */ | |
925 | #define GET_PORT_ID(p) (((p) & (0xff << 24)) >> 24) | |
926 | ||
0ebbab37 SS |
927 | /* Normal TRB fields */ |
928 | /* transfer_len bitmasks - bits 0:16 */ | |
929 | #define TRB_LEN(p) ((p) & 0x1ffff) | |
0ebbab37 SS |
930 | /* Interrupter Target - which MSI-X vector to target the completion event at */ |
931 | #define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22) | |
932 | #define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff) | |
933 | ||
934 | /* Cycle bit - indicates TRB ownership by HC or HCD */ | |
935 | #define TRB_CYCLE (1<<0) | |
936 | /* | |
937 | * Force next event data TRB to be evaluated before task switch. | |
938 | * Used to pass OS data back after a TD completes. | |
939 | */ | |
940 | #define TRB_ENT (1<<1) | |
941 | /* Interrupt on short packet */ | |
942 | #define TRB_ISP (1<<2) | |
943 | /* Set PCIe no snoop attribute */ | |
944 | #define TRB_NO_SNOOP (1<<3) | |
945 | /* Chain multiple TRBs into a TD */ | |
946 | #define TRB_CHAIN (1<<4) | |
947 | /* Interrupt on completion */ | |
948 | #define TRB_IOC (1<<5) | |
949 | /* The buffer pointer contains immediate data */ | |
950 | #define TRB_IDT (1<<6) | |
951 | ||
952 | ||
953 | /* Control transfer TRB specific fields */ | |
954 | #define TRB_DIR_IN (1<<16) | |
955 | ||
04e51901 AX |
956 | /* Isochronous TRB specific fields */ |
957 | #define TRB_SIA (1<<31) | |
958 | ||
7f84eef0 SS |
959 | struct xhci_generic_trb { |
960 | u32 field[4]; | |
98441973 | 961 | }; |
7f84eef0 SS |
962 | |
963 | union xhci_trb { | |
964 | struct xhci_link_trb link; | |
965 | struct xhci_transfer_event trans_event; | |
966 | struct xhci_event_cmd event_cmd; | |
967 | struct xhci_generic_trb generic; | |
968 | }; | |
969 | ||
0ebbab37 SS |
970 | /* TRB bit mask */ |
971 | #define TRB_TYPE_BITMASK (0xfc00) | |
972 | #define TRB_TYPE(p) ((p) << 10) | |
0238634d | 973 | #define TRB_FIELD_TO_TYPE(p) (((p) & TRB_TYPE_BITMASK) >> 10) |
0ebbab37 SS |
974 | /* TRB type IDs */ |
975 | /* bulk, interrupt, isoc scatter/gather, and control data stage */ | |
976 | #define TRB_NORMAL 1 | |
977 | /* setup stage for control transfers */ | |
978 | #define TRB_SETUP 2 | |
979 | /* data stage for control transfers */ | |
980 | #define TRB_DATA 3 | |
981 | /* status stage for control transfers */ | |
982 | #define TRB_STATUS 4 | |
983 | /* isoc transfers */ | |
984 | #define TRB_ISOC 5 | |
985 | /* TRB for linking ring segments */ | |
986 | #define TRB_LINK 6 | |
987 | #define TRB_EVENT_DATA 7 | |
988 | /* Transfer Ring No-op (not for the command ring) */ | |
989 | #define TRB_TR_NOOP 8 | |
990 | /* Command TRBs */ | |
991 | /* Enable Slot Command */ | |
992 | #define TRB_ENABLE_SLOT 9 | |
993 | /* Disable Slot Command */ | |
994 | #define TRB_DISABLE_SLOT 10 | |
995 | /* Address Device Command */ | |
996 | #define TRB_ADDR_DEV 11 | |
997 | /* Configure Endpoint Command */ | |
998 | #define TRB_CONFIG_EP 12 | |
999 | /* Evaluate Context Command */ | |
1000 | #define TRB_EVAL_CONTEXT 13 | |
a1587d97 SS |
1001 | /* Reset Endpoint Command */ |
1002 | #define TRB_RESET_EP 14 | |
0ebbab37 SS |
1003 | /* Stop Transfer Ring Command */ |
1004 | #define TRB_STOP_RING 15 | |
1005 | /* Set Transfer Ring Dequeue Pointer Command */ | |
1006 | #define TRB_SET_DEQ 16 | |
1007 | /* Reset Device Command */ | |
1008 | #define TRB_RESET_DEV 17 | |
1009 | /* Force Event Command (opt) */ | |
1010 | #define TRB_FORCE_EVENT 18 | |
1011 | /* Negotiate Bandwidth Command (opt) */ | |
1012 | #define TRB_NEG_BANDWIDTH 19 | |
1013 | /* Set Latency Tolerance Value Command (opt) */ | |
1014 | #define TRB_SET_LT 20 | |
1015 | /* Get port bandwidth Command */ | |
1016 | #define TRB_GET_BW 21 | |
1017 | /* Force Header Command - generate a transaction or link management packet */ | |
1018 | #define TRB_FORCE_HEADER 22 | |
1019 | /* No-op Command - not for transfer rings */ | |
1020 | #define TRB_CMD_NOOP 23 | |
1021 | /* TRB IDs 24-31 reserved */ | |
1022 | /* Event TRBS */ | |
1023 | /* Transfer Event */ | |
1024 | #define TRB_TRANSFER 32 | |
1025 | /* Command Completion Event */ | |
1026 | #define TRB_COMPLETION 33 | |
1027 | /* Port Status Change Event */ | |
1028 | #define TRB_PORT_STATUS 34 | |
1029 | /* Bandwidth Request Event (opt) */ | |
1030 | #define TRB_BANDWIDTH_EVENT 35 | |
1031 | /* Doorbell Event (opt) */ | |
1032 | #define TRB_DOORBELL 36 | |
1033 | /* Host Controller Event */ | |
1034 | #define TRB_HC_EVENT 37 | |
1035 | /* Device Notification Event - device sent function wake notification */ | |
1036 | #define TRB_DEV_NOTE 38 | |
1037 | /* MFINDEX Wrap Event - microframe counter wrapped */ | |
1038 | #define TRB_MFINDEX_WRAP 39 | |
1039 | /* TRB IDs 40-47 reserved, 48-63 is vendor-defined */ | |
1040 | ||
0238634d SS |
1041 | /* Nec vendor-specific command completion event. */ |
1042 | #define TRB_NEC_CMD_COMP 48 | |
1043 | /* Get NEC firmware revision. */ | |
1044 | #define TRB_NEC_GET_FW 49 | |
1045 | ||
1046 | #define NEC_FW_MINOR(p) (((p) >> 0) & 0xff) | |
1047 | #define NEC_FW_MAJOR(p) (((p) >> 8) & 0xff) | |
1048 | ||
0ebbab37 SS |
1049 | /* |
1050 | * TRBS_PER_SEGMENT must be a multiple of 4, | |
1051 | * since the command ring is 64-byte aligned. | |
1052 | * It must also be greater than 16. | |
1053 | */ | |
1054 | #define TRBS_PER_SEGMENT 64 | |
913a8a34 SS |
1055 | /* Allow two commands + a link TRB, along with any reserved command TRBs */ |
1056 | #define MAX_RSVD_CMD_TRBS (TRBS_PER_SEGMENT - 3) | |
0ebbab37 | 1057 | #define SEGMENT_SIZE (TRBS_PER_SEGMENT*16) |
8df75f42 SS |
1058 | /* SEGMENT_SHIFT should be log2(SEGMENT_SIZE). |
1059 | * Change this if you change TRBS_PER_SEGMENT! | |
1060 | */ | |
1061 | #define SEGMENT_SHIFT 10 | |
b10de142 SS |
1062 | /* TRB buffer pointers can't cross 64KB boundaries */ |
1063 | #define TRB_MAX_BUFF_SHIFT 16 | |
1064 | #define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT) | |
0ebbab37 SS |
1065 | |
1066 | struct xhci_segment { | |
1067 | union xhci_trb *trbs; | |
1068 | /* private to HCD */ | |
1069 | struct xhci_segment *next; | |
1070 | dma_addr_t dma; | |
98441973 | 1071 | }; |
0ebbab37 | 1072 | |
ae636747 SS |
1073 | struct xhci_td { |
1074 | struct list_head td_list; | |
1075 | struct list_head cancelled_td_list; | |
1076 | struct urb *urb; | |
1077 | struct xhci_segment *start_seg; | |
1078 | union xhci_trb *first_trb; | |
1079 | union xhci_trb *last_trb; | |
1080 | }; | |
1081 | ||
ac9d8fe7 SS |
1082 | struct xhci_dequeue_state { |
1083 | struct xhci_segment *new_deq_seg; | |
1084 | union xhci_trb *new_deq_ptr; | |
1085 | int new_cycle_state; | |
1086 | }; | |
1087 | ||
0ebbab37 SS |
1088 | struct xhci_ring { |
1089 | struct xhci_segment *first_seg; | |
1090 | union xhci_trb *enqueue; | |
7f84eef0 SS |
1091 | struct xhci_segment *enq_seg; |
1092 | unsigned int enq_updates; | |
0ebbab37 | 1093 | union xhci_trb *dequeue; |
7f84eef0 SS |
1094 | struct xhci_segment *deq_seg; |
1095 | unsigned int deq_updates; | |
d0e96f5a | 1096 | struct list_head td_list; |
0ebbab37 SS |
1097 | /* |
1098 | * Write the cycle state into the TRB cycle field to give ownership of | |
1099 | * the TRB to the host controller (if we are the producer), or to check | |
1100 | * if we own the TRB (if we are the consumer). See section 4.9.1. | |
1101 | */ | |
1102 | u32 cycle_state; | |
e9df17eb | 1103 | unsigned int stream_id; |
0ebbab37 SS |
1104 | }; |
1105 | ||
1106 | struct xhci_erst_entry { | |
1107 | /* 64-bit event ring segment address */ | |
8e595a5d | 1108 | u64 seg_addr; |
0ebbab37 SS |
1109 | u32 seg_size; |
1110 | /* Set to zero */ | |
1111 | u32 rsvd; | |
98441973 | 1112 | }; |
0ebbab37 SS |
1113 | |
1114 | struct xhci_erst { | |
1115 | struct xhci_erst_entry *entries; | |
1116 | unsigned int num_entries; | |
1117 | /* xhci->event_ring keeps track of segment dma addresses */ | |
1118 | dma_addr_t erst_dma_addr; | |
1119 | /* Num entries the ERST can contain */ | |
1120 | unsigned int erst_size; | |
1121 | }; | |
1122 | ||
254c80a3 JY |
1123 | struct xhci_scratchpad { |
1124 | u64 *sp_array; | |
1125 | dma_addr_t sp_dma; | |
1126 | void **sp_buffers; | |
1127 | dma_addr_t *sp_dma_buffers; | |
1128 | }; | |
1129 | ||
8e51adcc AX |
1130 | struct urb_priv { |
1131 | int length; | |
1132 | int td_cnt; | |
1133 | struct xhci_td *td[0]; | |
1134 | }; | |
1135 | ||
0ebbab37 SS |
1136 | /* |
1137 | * Each segment table entry is 4*32bits long. 1K seems like an ok size: | |
1138 | * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table, | |
1139 | * meaning 64 ring segments. | |
1140 | * Initial allocated size of the ERST, in number of entries */ | |
1141 | #define ERST_NUM_SEGS 1 | |
1142 | /* Initial allocated size of the ERST, in number of entries */ | |
1143 | #define ERST_SIZE 64 | |
1144 | /* Initial number of event segment rings allocated */ | |
1145 | #define ERST_ENTRIES 1 | |
7f84eef0 SS |
1146 | /* Poll every 60 seconds */ |
1147 | #define POLL_TIMEOUT 60 | |
6f5165cf SS |
1148 | /* Stop endpoint command timeout (secs) for URB cancellation watchdog timer */ |
1149 | #define XHCI_STOP_EP_CMD_TIMEOUT 5 | |
0ebbab37 SS |
1150 | /* XXX: Make these module parameters */ |
1151 | ||
5535b1d5 AX |
1152 | struct s3_save { |
1153 | u32 command; | |
1154 | u32 dev_nt; | |
1155 | u64 dcbaa_ptr; | |
1156 | u32 config_reg; | |
1157 | u32 irq_pending; | |
1158 | u32 irq_control; | |
1159 | u32 erst_size; | |
1160 | u64 erst_base; | |
1161 | u64 erst_dequeue; | |
1162 | }; | |
74c68741 | 1163 | |
20b67cf5 SS |
1164 | struct xhci_bus_state { |
1165 | unsigned long bus_suspended; | |
1166 | unsigned long next_statechange; | |
1167 | ||
1168 | /* Port suspend arrays are indexed by the portnum of the fake roothub */ | |
1169 | /* ports suspend status arrays - max 31 ports for USB2, 15 for USB3 */ | |
1170 | u32 port_c_suspend; | |
1171 | u32 suspended_ports; | |
1172 | unsigned long resume_done[USB_MAXCHILDREN]; | |
1173 | }; | |
1174 | ||
1175 | static inline unsigned int hcd_index(struct usb_hcd *hcd) | |
1176 | { | |
f6ff0ac8 SS |
1177 | if (hcd->speed == HCD_USB3) |
1178 | return 0; | |
1179 | else | |
1180 | return 1; | |
20b67cf5 SS |
1181 | } |
1182 | ||
74c68741 SS |
1183 | /* There is one ehci_hci structure per controller */ |
1184 | struct xhci_hcd { | |
b02d0ed6 | 1185 | struct usb_hcd *main_hcd; |
f6ff0ac8 | 1186 | struct usb_hcd *shared_hcd; |
74c68741 SS |
1187 | /* glue to PCI and HCD framework */ |
1188 | struct xhci_cap_regs __iomem *cap_regs; | |
1189 | struct xhci_op_regs __iomem *op_regs; | |
1190 | struct xhci_run_regs __iomem *run_regs; | |
0ebbab37 | 1191 | struct xhci_doorbell_array __iomem *dba; |
66d4eadd | 1192 | /* Our HCD's current interrupter register set */ |
98441973 | 1193 | struct xhci_intr_reg __iomem *ir_set; |
74c68741 SS |
1194 | |
1195 | /* Cached register copies of read-only HC data */ | |
1196 | __u32 hcs_params1; | |
1197 | __u32 hcs_params2; | |
1198 | __u32 hcs_params3; | |
1199 | __u32 hcc_params; | |
1200 | ||
1201 | spinlock_t lock; | |
1202 | ||
1203 | /* packed release number */ | |
1204 | u8 sbrn; | |
1205 | u16 hci_version; | |
1206 | u8 max_slots; | |
1207 | u8 max_interrupters; | |
1208 | u8 max_ports; | |
1209 | u8 isoc_threshold; | |
1210 | int event_ring_max; | |
1211 | int addr_64; | |
66d4eadd | 1212 | /* 4KB min, 128MB max */ |
74c68741 | 1213 | int page_size; |
66d4eadd SS |
1214 | /* Valid values are 12 to 20, inclusive */ |
1215 | int page_shift; | |
43b86af8 | 1216 | /* msi-x vectors */ |
66d4eadd SS |
1217 | int msix_count; |
1218 | struct msix_entry *msix_entries; | |
0ebbab37 | 1219 | /* data structures */ |
a74588f9 | 1220 | struct xhci_device_context_array *dcbaa; |
0ebbab37 | 1221 | struct xhci_ring *cmd_ring; |
913a8a34 | 1222 | unsigned int cmd_ring_reserved_trbs; |
0ebbab37 SS |
1223 | struct xhci_ring *event_ring; |
1224 | struct xhci_erst erst; | |
254c80a3 JY |
1225 | /* Scratchpad */ |
1226 | struct xhci_scratchpad *scratchpad; | |
1227 | ||
3ffbba95 SS |
1228 | /* slot enabling and address device helpers */ |
1229 | struct completion addr_dev; | |
1230 | int slot_id; | |
1231 | /* Internal mirror of the HW's dcbaa */ | |
1232 | struct xhci_virt_device *devs[MAX_HC_SLOTS]; | |
0ebbab37 SS |
1233 | |
1234 | /* DMA pools */ | |
1235 | struct dma_pool *device_pool; | |
1236 | struct dma_pool *segment_pool; | |
8df75f42 SS |
1237 | struct dma_pool *small_streams_pool; |
1238 | struct dma_pool *medium_streams_pool; | |
7f84eef0 SS |
1239 | |
1240 | #ifdef CONFIG_USB_XHCI_HCD_DEBUGGING | |
1241 | /* Poll the rings - for debugging */ | |
1242 | struct timer_list event_ring_timer; | |
1243 | int zombie; | |
1244 | #endif | |
6f5165cf SS |
1245 | /* Host controller watchdog timer structures */ |
1246 | unsigned int xhc_state; | |
9777e3ce | 1247 | |
9777e3ce | 1248 | u32 command; |
5535b1d5 | 1249 | struct s3_save s3; |
6f5165cf SS |
1250 | /* Host controller is dying - not responding to commands. "I'm not dead yet!" |
1251 | * | |
1252 | * xHC interrupts have been disabled and a watchdog timer will (or has already) | |
1253 | * halt the xHCI host, and complete all URBs with an -ESHUTDOWN code. Any code | |
1254 | * that sees this status (other than the timer that set it) should stop touching | |
1255 | * hardware immediately. Interrupt handlers should return immediately when | |
1256 | * they see this status (any time they drop and re-acquire xhci->lock). | |
1257 | * xhci_urb_dequeue() should call usb_hcd_check_unlink_urb() and return without | |
1258 | * putting the TD on the canceled list, etc. | |
1259 | * | |
1260 | * There are no reports of xHCI host controllers that display this issue. | |
1261 | */ | |
1262 | #define XHCI_STATE_DYING (1 << 0) | |
7f84eef0 | 1263 | /* Statistics */ |
7f84eef0 | 1264 | int error_bitmask; |
b0567b3f SS |
1265 | unsigned int quirks; |
1266 | #define XHCI_LINK_TRB_QUIRK (1 << 0) | |
ac9d8fe7 | 1267 | #define XHCI_RESET_EP_QUIRK (1 << 1) |
0238634d | 1268 | #define XHCI_NEC_HOST (1 << 2) |
f6ff0ac8 SS |
1269 | /* There are two roothubs to keep track of bus suspend info for */ |
1270 | struct xhci_bus_state bus_state[2]; | |
da6699ce SS |
1271 | /* Is each xHCI roothub port a USB 3.0, USB 2.0, or USB 1.1 port? */ |
1272 | u8 *port_array; | |
1273 | /* Array of pointers to USB 3.0 PORTSC registers */ | |
1274 | u32 __iomem **usb3_ports; | |
1275 | unsigned int num_usb3_ports; | |
1276 | /* Array of pointers to USB 2.0 PORTSC registers */ | |
1277 | u32 __iomem **usb2_ports; | |
1278 | unsigned int num_usb2_ports; | |
74c68741 SS |
1279 | }; |
1280 | ||
1281 | /* convert between an HCD pointer and the corresponding EHCI_HCD */ | |
1282 | static inline struct xhci_hcd *hcd_to_xhci(struct usb_hcd *hcd) | |
1283 | { | |
b02d0ed6 | 1284 | return *((struct xhci_hcd **) (hcd->hcd_priv)); |
74c68741 SS |
1285 | } |
1286 | ||
1287 | static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci) | |
1288 | { | |
b02d0ed6 | 1289 | return xhci->main_hcd; |
74c68741 SS |
1290 | } |
1291 | ||
1292 | #ifdef CONFIG_USB_XHCI_HCD_DEBUGGING | |
1293 | #define XHCI_DEBUG 1 | |
1294 | #else | |
1295 | #define XHCI_DEBUG 0 | |
1296 | #endif | |
1297 | ||
1298 | #define xhci_dbg(xhci, fmt, args...) \ | |
1299 | do { if (XHCI_DEBUG) dev_dbg(xhci_to_hcd(xhci)->self.controller , fmt , ## args); } while (0) | |
1300 | #define xhci_info(xhci, fmt, args...) \ | |
1301 | do { if (XHCI_DEBUG) dev_info(xhci_to_hcd(xhci)->self.controller , fmt , ## args); } while (0) | |
1302 | #define xhci_err(xhci, fmt, args...) \ | |
1303 | dev_err(xhci_to_hcd(xhci)->self.controller , fmt , ## args) | |
1304 | #define xhci_warn(xhci, fmt, args...) \ | |
1305 | dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args) | |
1306 | ||
1307 | /* TODO: copied from ehci.h - can be refactored? */ | |
1308 | /* xHCI spec says all registers are little endian */ | |
1309 | static inline unsigned int xhci_readl(const struct xhci_hcd *xhci, | |
1310 | __u32 __iomem *regs) | |
1311 | { | |
1312 | return readl(regs); | |
1313 | } | |
045f123d | 1314 | static inline void xhci_writel(struct xhci_hcd *xhci, |
74c68741 SS |
1315 | const unsigned int val, __u32 __iomem *regs) |
1316 | { | |
66e49d87 SS |
1317 | xhci_dbg(xhci, |
1318 | "`MEM_WRITE_DWORD(3'b000, 32'h%p, 32'h%0x, 4'hf);\n", | |
1319 | regs, val); | |
74c68741 SS |
1320 | writel(val, regs); |
1321 | } | |
1322 | ||
8e595a5d SS |
1323 | /* |
1324 | * Registers should always be accessed with double word or quad word accesses. | |
1325 | * | |
1326 | * Some xHCI implementations may support 64-bit address pointers. Registers | |
1327 | * with 64-bit address pointers should be written to with dword accesses by | |
1328 | * writing the low dword first (ptr[0]), then the high dword (ptr[1]) second. | |
1329 | * xHCI implementations that do not support 64-bit address pointers will ignore | |
1330 | * the high dword, and write order is irrelevant. | |
1331 | */ | |
1332 | static inline u64 xhci_read_64(const struct xhci_hcd *xhci, | |
1333 | __u64 __iomem *regs) | |
1334 | { | |
1335 | __u32 __iomem *ptr = (__u32 __iomem *) regs; | |
1336 | u64 val_lo = readl(ptr); | |
1337 | u64 val_hi = readl(ptr + 1); | |
1338 | return val_lo + (val_hi << 32); | |
1339 | } | |
1340 | static inline void xhci_write_64(struct xhci_hcd *xhci, | |
1341 | const u64 val, __u64 __iomem *regs) | |
1342 | { | |
1343 | __u32 __iomem *ptr = (__u32 __iomem *) regs; | |
1344 | u32 val_lo = lower_32_bits(val); | |
1345 | u32 val_hi = upper_32_bits(val); | |
1346 | ||
66e49d87 SS |
1347 | xhci_dbg(xhci, |
1348 | "`MEM_WRITE_DWORD(3'b000, 64'h%p, 64'h%0lx, 4'hf);\n", | |
1349 | regs, (long unsigned int) val); | |
8e595a5d SS |
1350 | writel(val_lo, ptr); |
1351 | writel(val_hi, ptr + 1); | |
1352 | } | |
1353 | ||
b0567b3f SS |
1354 | static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci) |
1355 | { | |
1356 | u32 temp = xhci_readl(xhci, &xhci->cap_regs->hc_capbase); | |
1357 | return ((HC_VERSION(temp) == 0x95) && | |
1358 | (xhci->quirks & XHCI_LINK_TRB_QUIRK)); | |
1359 | } | |
1360 | ||
66d4eadd | 1361 | /* xHCI debugging */ |
98441973 | 1362 | void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num); |
66d4eadd | 1363 | void xhci_print_registers(struct xhci_hcd *xhci); |
0ebbab37 SS |
1364 | void xhci_dbg_regs(struct xhci_hcd *xhci); |
1365 | void xhci_print_run_regs(struct xhci_hcd *xhci); | |
d0e96f5a SS |
1366 | void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb); |
1367 | void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb); | |
7f84eef0 | 1368 | void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg); |
0ebbab37 SS |
1369 | void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring); |
1370 | void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst); | |
1371 | void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci); | |
7f84eef0 | 1372 | void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring); |
d115b048 | 1373 | void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep); |
9c9a7dbf | 1374 | char *xhci_get_slot_state(struct xhci_hcd *xhci, |
2a8f82c4 | 1375 | struct xhci_container_ctx *ctx); |
e9df17eb SS |
1376 | void xhci_dbg_ep_rings(struct xhci_hcd *xhci, |
1377 | unsigned int slot_id, unsigned int ep_index, | |
1378 | struct xhci_virt_ep *ep); | |
66d4eadd | 1379 | |
3dbda77e | 1380 | /* xHCI memory management */ |
66d4eadd SS |
1381 | void xhci_mem_cleanup(struct xhci_hcd *xhci); |
1382 | int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags); | |
3ffbba95 SS |
1383 | void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id); |
1384 | int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, struct usb_device *udev, gfp_t flags); | |
1385 | int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev); | |
2d1ee590 SS |
1386 | void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci, |
1387 | struct usb_device *udev); | |
d0e96f5a | 1388 | unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc); |
f94e0186 | 1389 | unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc); |
ac9d8fe7 SS |
1390 | unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index); |
1391 | unsigned int xhci_last_valid_endpoint(u32 added_ctxs); | |
f94e0186 | 1392 | void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep); |
f2217e8e | 1393 | void xhci_endpoint_copy(struct xhci_hcd *xhci, |
913a8a34 SS |
1394 | struct xhci_container_ctx *in_ctx, |
1395 | struct xhci_container_ctx *out_ctx, | |
1396 | unsigned int ep_index); | |
1397 | void xhci_slot_copy(struct xhci_hcd *xhci, | |
1398 | struct xhci_container_ctx *in_ctx, | |
1399 | struct xhci_container_ctx *out_ctx); | |
f88ba78d SS |
1400 | int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, |
1401 | struct usb_device *udev, struct usb_host_endpoint *ep, | |
1402 | gfp_t mem_flags); | |
f94e0186 | 1403 | void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring); |
412566bd SS |
1404 | void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci, |
1405 | struct xhci_virt_device *virt_dev, | |
1406 | unsigned int ep_index); | |
8df75f42 SS |
1407 | struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, |
1408 | unsigned int num_stream_ctxs, | |
1409 | unsigned int num_streams, gfp_t flags); | |
1410 | void xhci_free_stream_info(struct xhci_hcd *xhci, | |
1411 | struct xhci_stream_info *stream_info); | |
1412 | void xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci, | |
1413 | struct xhci_ep_ctx *ep_ctx, | |
1414 | struct xhci_stream_info *stream_info); | |
1415 | void xhci_setup_no_streams_ep_input_ctx(struct xhci_hcd *xhci, | |
1416 | struct xhci_ep_ctx *ep_ctx, | |
1417 | struct xhci_virt_ep *ep); | |
e9df17eb SS |
1418 | struct xhci_ring *xhci_dma_to_transfer_ring( |
1419 | struct xhci_virt_ep *ep, | |
1420 | u64 address); | |
e9df17eb SS |
1421 | struct xhci_ring *xhci_stream_id_to_ring( |
1422 | struct xhci_virt_device *dev, | |
1423 | unsigned int ep_index, | |
1424 | unsigned int stream_id); | |
913a8a34 | 1425 | struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, |
a1d78c16 SS |
1426 | bool allocate_in_ctx, bool allocate_completion, |
1427 | gfp_t mem_flags); | |
8e51adcc | 1428 | void xhci_urb_free_priv(struct xhci_hcd *xhci, struct urb_priv *urb_priv); |
913a8a34 SS |
1429 | void xhci_free_command(struct xhci_hcd *xhci, |
1430 | struct xhci_command *command); | |
66d4eadd SS |
1431 | |
1432 | #ifdef CONFIG_PCI | |
1433 | /* xHCI PCI glue */ | |
1434 | int xhci_register_pci(void); | |
1435 | void xhci_unregister_pci(void); | |
1436 | #endif | |
1437 | ||
1438 | /* xHCI host controller glue */ | |
4f0f0bae | 1439 | void xhci_quiesce(struct xhci_hcd *xhci); |
66d4eadd SS |
1440 | int xhci_halt(struct xhci_hcd *xhci); |
1441 | int xhci_reset(struct xhci_hcd *xhci); | |
1442 | int xhci_init(struct usb_hcd *hcd); | |
1443 | int xhci_run(struct usb_hcd *hcd); | |
1444 | void xhci_stop(struct usb_hcd *hcd); | |
1445 | void xhci_shutdown(struct usb_hcd *hcd); | |
436a3890 SS |
1446 | |
1447 | #ifdef CONFIG_PM | |
5535b1d5 AX |
1448 | int xhci_suspend(struct xhci_hcd *xhci); |
1449 | int xhci_resume(struct xhci_hcd *xhci, bool hibernated); | |
436a3890 SS |
1450 | #else |
1451 | #define xhci_suspend NULL | |
1452 | #define xhci_resume NULL | |
1453 | #endif | |
1454 | ||
66d4eadd | 1455 | int xhci_get_frame(struct usb_hcd *hcd); |
7f84eef0 | 1456 | irqreturn_t xhci_irq(struct usb_hcd *hcd); |
9032cd52 | 1457 | irqreturn_t xhci_msi_irq(int irq, struct usb_hcd *hcd); |
3ffbba95 SS |
1458 | int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev); |
1459 | void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev); | |
8df75f42 SS |
1460 | int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, |
1461 | struct usb_host_endpoint **eps, unsigned int num_eps, | |
1462 | unsigned int num_streams, gfp_t mem_flags); | |
1463 | int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, | |
1464 | struct usb_host_endpoint **eps, unsigned int num_eps, | |
1465 | gfp_t mem_flags); | |
3ffbba95 | 1466 | int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev); |
ac1c1b7f SS |
1467 | int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, |
1468 | struct usb_tt *tt, gfp_t mem_flags); | |
d0e96f5a SS |
1469 | int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags); |
1470 | int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status); | |
f94e0186 SS |
1471 | int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); |
1472 | int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); | |
a1587d97 | 1473 | void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep); |
f0615c45 | 1474 | int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev); |
f94e0186 SS |
1475 | int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); |
1476 | void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); | |
7f84eef0 SS |
1477 | |
1478 | /* xHCI ring, segment, TRB, and TD functions */ | |
23e3be11 | 1479 | dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb); |
6648f29d SS |
1480 | struct xhci_segment *trb_in_td(struct xhci_segment *start_seg, |
1481 | union xhci_trb *start_trb, union xhci_trb *end_trb, | |
1482 | dma_addr_t suspect_dma); | |
b45b5069 | 1483 | int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code); |
23e3be11 | 1484 | void xhci_ring_cmd_db(struct xhci_hcd *xhci); |
23e3be11 SS |
1485 | int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id); |
1486 | int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, | |
1487 | u32 slot_id); | |
0238634d SS |
1488 | int xhci_queue_vendor_command(struct xhci_hcd *xhci, |
1489 | u32 field1, u32 field2, u32 field3, u32 field4); | |
23e3be11 | 1490 | int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, int slot_id, |
be88fe4f | 1491 | unsigned int ep_index, int suspend); |
23e3be11 SS |
1492 | int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, |
1493 | int slot_id, unsigned int ep_index); | |
1494 | int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, | |
1495 | int slot_id, unsigned int ep_index); | |
624defa1 SS |
1496 | int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, |
1497 | int slot_id, unsigned int ep_index); | |
04e51901 AX |
1498 | int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags, |
1499 | struct urb *urb, int slot_id, unsigned int ep_index); | |
23e3be11 | 1500 | int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, |
913a8a34 | 1501 | u32 slot_id, bool command_must_succeed); |
f2217e8e | 1502 | int xhci_queue_evaluate_context(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, |
23e3be11 | 1503 | u32 slot_id); |
a1587d97 SS |
1504 | int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id, |
1505 | unsigned int ep_index); | |
2a8f82c4 | 1506 | int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id); |
c92bcfa7 SS |
1507 | void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, |
1508 | unsigned int slot_id, unsigned int ep_index, | |
e9df17eb SS |
1509 | unsigned int stream_id, struct xhci_td *cur_td, |
1510 | struct xhci_dequeue_state *state); | |
c92bcfa7 | 1511 | void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, |
63a0d9ab | 1512 | unsigned int slot_id, unsigned int ep_index, |
e9df17eb | 1513 | unsigned int stream_id, |
63a0d9ab | 1514 | struct xhci_dequeue_state *deq_state); |
82d1009f | 1515 | void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, |
63a0d9ab | 1516 | struct usb_device *udev, unsigned int ep_index); |
ac9d8fe7 SS |
1517 | void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci, |
1518 | unsigned int slot_id, unsigned int ep_index, | |
1519 | struct xhci_dequeue_state *deq_state); | |
6f5165cf | 1520 | void xhci_stop_endpoint_command_watchdog(unsigned long arg); |
be88fe4f AX |
1521 | void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id, |
1522 | unsigned int ep_index, unsigned int stream_id); | |
66d4eadd | 1523 | |
0f2a7930 SS |
1524 | /* xHCI roothub code */ |
1525 | int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, | |
1526 | char *buf, u16 wLength); | |
1527 | int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); | |
436a3890 SS |
1528 | |
1529 | #ifdef CONFIG_PM | |
9777e3ce AX |
1530 | int xhci_bus_suspend(struct usb_hcd *hcd); |
1531 | int xhci_bus_resume(struct usb_hcd *hcd); | |
436a3890 SS |
1532 | #else |
1533 | #define xhci_bus_suspend NULL | |
1534 | #define xhci_bus_resume NULL | |
1535 | #endif /* CONFIG_PM */ | |
1536 | ||
56192531 | 1537 | u32 xhci_port_state_to_neutral(u32 state); |
5233630f SS |
1538 | int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
1539 | u16 port); | |
56192531 | 1540 | void xhci_ring_device(struct xhci_hcd *xhci, int slot_id); |
0f2a7930 | 1541 | |
d115b048 JY |
1542 | /* xHCI contexts */ |
1543 | struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); | |
1544 | struct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); | |
1545 | struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int ep_index); | |
1546 | ||
74c68741 | 1547 | #endif /* __LINUX_XHCI_HCD_H */ |