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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> |
74c68741 SS |
29 | |
30 | #include "../core/hcd.h" | |
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 */ | |
92 | ||
93 | /* HCSPARAMS3 - hcs_params3 - bitmasks */ | |
94 | /* bits 0:7, Max U1 to U0 latency for the roothub ports */ | |
95 | #define HCS_U1_LATENCY(p) (((p) >> 0) & 0xff) | |
96 | /* bits 16:31, Max U2 to U0 latency for the roothub ports */ | |
97 | #define HCS_U2_LATENCY(p) (((p) >> 16) & 0xffff) | |
98 | ||
99 | /* HCCPARAMS - hcc_params - bitmasks */ | |
100 | /* true: HC can use 64-bit address pointers */ | |
101 | #define HCC_64BIT_ADDR(p) ((p) & (1 << 0)) | |
102 | /* true: HC can do bandwidth negotiation */ | |
103 | #define HCC_BANDWIDTH_NEG(p) ((p) & (1 << 1)) | |
104 | /* true: HC uses 64-byte Device Context structures | |
105 | * FIXME 64-byte context structures aren't supported yet. | |
106 | */ | |
107 | #define HCC_64BYTE_CONTEXT(p) ((p) & (1 << 2)) | |
108 | /* true: HC has port power switches */ | |
109 | #define HCC_PPC(p) ((p) & (1 << 3)) | |
110 | /* true: HC has port indicators */ | |
111 | #define HCS_INDICATOR(p) ((p) & (1 << 4)) | |
112 | /* true: HC has Light HC Reset Capability */ | |
113 | #define HCC_LIGHT_RESET(p) ((p) & (1 << 5)) | |
114 | /* true: HC supports latency tolerance messaging */ | |
115 | #define HCC_LTC(p) ((p) & (1 << 6)) | |
116 | /* true: no secondary Stream ID Support */ | |
117 | #define HCC_NSS(p) ((p) & (1 << 7)) | |
118 | /* Max size for Primary Stream Arrays - 2^(n+1), where n is bits 12:15 */ | |
119 | #define HCC_MAX_PSA (1 << ((((p) >> 12) & 0xf) + 1)) | |
120 | /* Extended Capabilities pointer from PCI base - section 5.3.6 */ | |
121 | #define HCC_EXT_CAPS(p) XHCI_HCC_EXT_CAPS(p) | |
122 | ||
123 | /* db_off bitmask - bits 0:1 reserved */ | |
124 | #define DBOFF_MASK (~0x3) | |
125 | ||
126 | /* run_regs_off bitmask - bits 0:4 reserved */ | |
127 | #define RTSOFF_MASK (~0x1f) | |
128 | ||
129 | ||
130 | /* Number of registers per port */ | |
131 | #define NUM_PORT_REGS 4 | |
132 | ||
133 | /** | |
134 | * struct xhci_op_regs - xHCI Host Controller Operational Registers. | |
135 | * @command: USBCMD - xHC command register | |
136 | * @status: USBSTS - xHC status register | |
137 | * @page_size: This indicates the page size that the host controller | |
138 | * supports. If bit n is set, the HC supports a page size | |
139 | * of 2^(n+12), up to a 128MB page size. | |
140 | * 4K is the minimum page size. | |
141 | * @cmd_ring: CRP - 64-bit Command Ring Pointer | |
142 | * @dcbaa_ptr: DCBAAP - 64-bit Device Context Base Address Array Pointer | |
143 | * @config_reg: CONFIG - Configure Register | |
144 | * @port_status_base: PORTSCn - base address for Port Status and Control | |
145 | * Each port has a Port Status and Control register, | |
146 | * followed by a Port Power Management Status and Control | |
147 | * register, a Port Link Info register, and a reserved | |
148 | * register. | |
149 | * @port_power_base: PORTPMSCn - base address for | |
150 | * Port Power Management Status and Control | |
151 | * @port_link_base: PORTLIn - base address for Port Link Info (current | |
152 | * Link PM state and control) for USB 2.1 and USB 3.0 | |
153 | * devices. | |
154 | */ | |
155 | struct xhci_op_regs { | |
156 | u32 command; | |
157 | u32 status; | |
158 | u32 page_size; | |
159 | u32 reserved1; | |
160 | u32 reserved2; | |
161 | u32 dev_notification; | |
8e595a5d | 162 | u64 cmd_ring; |
74c68741 SS |
163 | /* rsvd: offset 0x20-2F */ |
164 | u32 reserved3[4]; | |
8e595a5d | 165 | u64 dcbaa_ptr; |
74c68741 SS |
166 | u32 config_reg; |
167 | /* rsvd: offset 0x3C-3FF */ | |
168 | u32 reserved4[241]; | |
169 | /* port 1 registers, which serve as a base address for other ports */ | |
170 | u32 port_status_base; | |
171 | u32 port_power_base; | |
172 | u32 port_link_base; | |
173 | u32 reserved5; | |
174 | /* registers for ports 2-255 */ | |
175 | u32 reserved6[NUM_PORT_REGS*254]; | |
98441973 | 176 | }; |
74c68741 SS |
177 | |
178 | /* USBCMD - USB command - command bitmasks */ | |
179 | /* start/stop HC execution - do not write unless HC is halted*/ | |
180 | #define CMD_RUN XHCI_CMD_RUN | |
181 | /* Reset HC - resets internal HC state machine and all registers (except | |
182 | * PCI config regs). HC does NOT drive a USB reset on the downstream ports. | |
183 | * The xHCI driver must reinitialize the xHC after setting this bit. | |
184 | */ | |
185 | #define CMD_RESET (1 << 1) | |
186 | /* Event Interrupt Enable - a '1' allows interrupts from the host controller */ | |
187 | #define CMD_EIE XHCI_CMD_EIE | |
188 | /* Host System Error Interrupt Enable - get out-of-band signal for HC errors */ | |
189 | #define CMD_HSEIE XHCI_CMD_HSEIE | |
190 | /* bits 4:6 are reserved (and should be preserved on writes). */ | |
191 | /* light reset (port status stays unchanged) - reset completed when this is 0 */ | |
192 | #define CMD_LRESET (1 << 7) | |
193 | /* FIXME: ignoring host controller save/restore state for now. */ | |
194 | #define CMD_CSS (1 << 8) | |
195 | #define CMD_CRS (1 << 9) | |
196 | /* Enable Wrap Event - '1' means xHC generates an event when MFINDEX wraps. */ | |
197 | #define CMD_EWE XHCI_CMD_EWE | |
198 | /* MFINDEX power management - '1' means xHC can stop MFINDEX counter if all root | |
199 | * hubs are in U3 (selective suspend), disconnect, disabled, or powered-off. | |
200 | * '0' means the xHC can power it off if all ports are in the disconnect, | |
201 | * disabled, or powered-off state. | |
202 | */ | |
203 | #define CMD_PM_INDEX (1 << 11) | |
204 | /* bits 12:31 are reserved (and should be preserved on writes). */ | |
205 | ||
206 | /* USBSTS - USB status - status bitmasks */ | |
207 | /* HC not running - set to 1 when run/stop bit is cleared. */ | |
208 | #define STS_HALT XHCI_STS_HALT | |
209 | /* serious error, e.g. PCI parity error. The HC will clear the run/stop bit. */ | |
210 | #define STS_FATAL (1 << 2) | |
211 | /* event interrupt - clear this prior to clearing any IP flags in IR set*/ | |
212 | #define STS_EINT (1 << 3) | |
213 | /* port change detect */ | |
214 | #define STS_PORT (1 << 4) | |
215 | /* bits 5:7 reserved and zeroed */ | |
216 | /* save state status - '1' means xHC is saving state */ | |
217 | #define STS_SAVE (1 << 8) | |
218 | /* restore state status - '1' means xHC is restoring state */ | |
219 | #define STS_RESTORE (1 << 9) | |
220 | /* true: save or restore error */ | |
221 | #define STS_SRE (1 << 10) | |
222 | /* true: Controller Not Ready to accept doorbell or op reg writes after reset */ | |
223 | #define STS_CNR XHCI_STS_CNR | |
224 | /* true: internal Host Controller Error - SW needs to reset and reinitialize */ | |
225 | #define STS_HCE (1 << 12) | |
226 | /* bits 13:31 reserved and should be preserved */ | |
227 | ||
228 | /* | |
229 | * DNCTRL - Device Notification Control Register - dev_notification bitmasks | |
230 | * Generate a device notification event when the HC sees a transaction with a | |
231 | * notification type that matches a bit set in this bit field. | |
232 | */ | |
233 | #define DEV_NOTE_MASK (0xffff) | |
234 | #define ENABLE_DEV_NOTE(x) (1 << x) | |
235 | /* Most of the device notification types should only be used for debug. | |
236 | * SW does need to pay attention to function wake notifications. | |
237 | */ | |
238 | #define DEV_NOTE_FWAKE ENABLE_DEV_NOTE(1) | |
239 | ||
0ebbab37 SS |
240 | /* CRCR - Command Ring Control Register - cmd_ring bitmasks */ |
241 | /* bit 0 is the command ring cycle state */ | |
242 | /* stop ring operation after completion of the currently executing command */ | |
243 | #define CMD_RING_PAUSE (1 << 1) | |
244 | /* stop ring immediately - abort the currently executing command */ | |
245 | #define CMD_RING_ABORT (1 << 2) | |
246 | /* true: command ring is running */ | |
247 | #define CMD_RING_RUNNING (1 << 3) | |
248 | /* bits 4:5 reserved and should be preserved */ | |
249 | /* Command Ring pointer - bit mask for the lower 32 bits. */ | |
8e595a5d | 250 | #define CMD_RING_RSVD_BITS (0x3f) |
0ebbab37 | 251 | |
74c68741 SS |
252 | /* CONFIG - Configure Register - config_reg bitmasks */ |
253 | /* bits 0:7 - maximum number of device slots enabled (NumSlotsEn) */ | |
254 | #define MAX_DEVS(p) ((p) & 0xff) | |
255 | /* bits 8:31 - reserved and should be preserved */ | |
256 | ||
257 | /* PORTSC - Port Status and Control Register - port_status_base bitmasks */ | |
258 | /* true: device connected */ | |
259 | #define PORT_CONNECT (1 << 0) | |
260 | /* true: port enabled */ | |
261 | #define PORT_PE (1 << 1) | |
262 | /* bit 2 reserved and zeroed */ | |
263 | /* true: port has an over-current condition */ | |
264 | #define PORT_OC (1 << 3) | |
265 | /* true: port reset signaling asserted */ | |
266 | #define PORT_RESET (1 << 4) | |
267 | /* Port Link State - bits 5:8 | |
268 | * A read gives the current link PM state of the port, | |
269 | * a write with Link State Write Strobe set sets the link state. | |
270 | */ | |
271 | /* true: port has power (see HCC_PPC) */ | |
272 | #define PORT_POWER (1 << 9) | |
273 | /* bits 10:13 indicate device speed: | |
274 | * 0 - undefined speed - port hasn't be initialized by a reset yet | |
275 | * 1 - full speed | |
276 | * 2 - low speed | |
277 | * 3 - high speed | |
278 | * 4 - super speed | |
279 | * 5-15 reserved | |
280 | */ | |
3ffbba95 SS |
281 | #define DEV_SPEED_MASK (0xf << 10) |
282 | #define XDEV_FS (0x1 << 10) | |
283 | #define XDEV_LS (0x2 << 10) | |
284 | #define XDEV_HS (0x3 << 10) | |
285 | #define XDEV_SS (0x4 << 10) | |
74c68741 | 286 | #define DEV_UNDEFSPEED(p) (((p) & DEV_SPEED_MASK) == (0x0<<10)) |
3ffbba95 SS |
287 | #define DEV_FULLSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_FS) |
288 | #define DEV_LOWSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_LS) | |
289 | #define DEV_HIGHSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_HS) | |
290 | #define DEV_SUPERSPEED(p) (((p) & DEV_SPEED_MASK) == XDEV_SS) | |
291 | /* Bits 20:23 in the Slot Context are the speed for the device */ | |
292 | #define SLOT_SPEED_FS (XDEV_FS << 10) | |
293 | #define SLOT_SPEED_LS (XDEV_LS << 10) | |
294 | #define SLOT_SPEED_HS (XDEV_HS << 10) | |
295 | #define SLOT_SPEED_SS (XDEV_SS << 10) | |
74c68741 SS |
296 | /* Port Indicator Control */ |
297 | #define PORT_LED_OFF (0 << 14) | |
298 | #define PORT_LED_AMBER (1 << 14) | |
299 | #define PORT_LED_GREEN (2 << 14) | |
300 | #define PORT_LED_MASK (3 << 14) | |
301 | /* Port Link State Write Strobe - set this when changing link state */ | |
302 | #define PORT_LINK_STROBE (1 << 16) | |
303 | /* true: connect status change */ | |
304 | #define PORT_CSC (1 << 17) | |
305 | /* true: port enable change */ | |
306 | #define PORT_PEC (1 << 18) | |
307 | /* true: warm reset for a USB 3.0 device is done. A "hot" reset puts the port | |
308 | * into an enabled state, and the device into the default state. A "warm" reset | |
309 | * also resets the link, forcing the device through the link training sequence. | |
310 | * SW can also look at the Port Reset register to see when warm reset is done. | |
311 | */ | |
312 | #define PORT_WRC (1 << 19) | |
313 | /* true: over-current change */ | |
314 | #define PORT_OCC (1 << 20) | |
315 | /* true: reset change - 1 to 0 transition of PORT_RESET */ | |
316 | #define PORT_RC (1 << 21) | |
317 | /* port link status change - set on some port link state transitions: | |
318 | * Transition Reason | |
319 | * ------------------------------------------------------------------------------ | |
320 | * - U3 to Resume Wakeup signaling from a device | |
321 | * - Resume to Recovery to U0 USB 3.0 device resume | |
322 | * - Resume to U0 USB 2.0 device resume | |
323 | * - U3 to Recovery to U0 Software resume of USB 3.0 device complete | |
324 | * - U3 to U0 Software resume of USB 2.0 device complete | |
325 | * - U2 to U0 L1 resume of USB 2.1 device complete | |
326 | * - U0 to U0 (???) L1 entry rejection by USB 2.1 device | |
327 | * - U0 to disabled L1 entry error with USB 2.1 device | |
328 | * - Any state to inactive Error on USB 3.0 port | |
329 | */ | |
330 | #define PORT_PLC (1 << 22) | |
331 | /* port configure error change - port failed to configure its link partner */ | |
332 | #define PORT_CEC (1 << 23) | |
333 | /* bit 24 reserved */ | |
334 | /* wake on connect (enable) */ | |
335 | #define PORT_WKCONN_E (1 << 25) | |
336 | /* wake on disconnect (enable) */ | |
337 | #define PORT_WKDISC_E (1 << 26) | |
338 | /* wake on over-current (enable) */ | |
339 | #define PORT_WKOC_E (1 << 27) | |
340 | /* bits 28:29 reserved */ | |
341 | /* true: device is removable - for USB 3.0 roothub emulation */ | |
342 | #define PORT_DEV_REMOVE (1 << 30) | |
343 | /* Initiate a warm port reset - complete when PORT_WRC is '1' */ | |
344 | #define PORT_WR (1 << 31) | |
345 | ||
346 | /* Port Power Management Status and Control - port_power_base bitmasks */ | |
347 | /* Inactivity timer value for transitions into U1, in microseconds. | |
348 | * Timeout can be up to 127us. 0xFF means an infinite timeout. | |
349 | */ | |
350 | #define PORT_U1_TIMEOUT(p) ((p) & 0xff) | |
351 | /* Inactivity timer value for transitions into U2 */ | |
352 | #define PORT_U2_TIMEOUT(p) (((p) & 0xff) << 8) | |
353 | /* Bits 24:31 for port testing */ | |
354 | ||
355 | ||
356 | /** | |
98441973 | 357 | * struct xhci_intr_reg - Interrupt Register Set |
74c68741 SS |
358 | * @irq_pending: IMAN - Interrupt Management Register. Used to enable |
359 | * interrupts and check for pending interrupts. | |
360 | * @irq_control: IMOD - Interrupt Moderation Register. | |
361 | * Used to throttle interrupts. | |
362 | * @erst_size: Number of segments in the Event Ring Segment Table (ERST). | |
363 | * @erst_base: ERST base address. | |
364 | * @erst_dequeue: Event ring dequeue pointer. | |
365 | * | |
366 | * Each interrupter (defined by a MSI-X vector) has an event ring and an Event | |
367 | * Ring Segment Table (ERST) associated with it. The event ring is comprised of | |
368 | * multiple segments of the same size. The HC places events on the ring and | |
369 | * "updates the Cycle bit in the TRBs to indicate to software the current | |
370 | * position of the Enqueue Pointer." The HCD (Linux) processes those events and | |
371 | * updates the dequeue pointer. | |
372 | */ | |
98441973 | 373 | struct xhci_intr_reg { |
74c68741 SS |
374 | u32 irq_pending; |
375 | u32 irq_control; | |
376 | u32 erst_size; | |
377 | u32 rsvd; | |
8e595a5d SS |
378 | u64 erst_base; |
379 | u64 erst_dequeue; | |
98441973 | 380 | }; |
74c68741 | 381 | |
66d4eadd | 382 | /* irq_pending bitmasks */ |
74c68741 | 383 | #define ER_IRQ_PENDING(p) ((p) & 0x1) |
66d4eadd | 384 | /* bits 2:31 need to be preserved */ |
7f84eef0 | 385 | /* THIS IS BUGGY - FIXME - IP IS WRITE 1 TO CLEAR */ |
66d4eadd SS |
386 | #define ER_IRQ_CLEAR(p) ((p) & 0xfffffffe) |
387 | #define ER_IRQ_ENABLE(p) ((ER_IRQ_CLEAR(p)) | 0x2) | |
388 | #define ER_IRQ_DISABLE(p) ((ER_IRQ_CLEAR(p)) & ~(0x2)) | |
389 | ||
390 | /* irq_control bitmasks */ | |
391 | /* Minimum interval between interrupts (in 250ns intervals). The interval | |
392 | * between interrupts will be longer if there are no events on the event ring. | |
393 | * Default is 4000 (1 ms). | |
394 | */ | |
395 | #define ER_IRQ_INTERVAL_MASK (0xffff) | |
396 | /* Counter used to count down the time to the next interrupt - HW use only */ | |
397 | #define ER_IRQ_COUNTER_MASK (0xffff << 16) | |
398 | ||
399 | /* erst_size bitmasks */ | |
74c68741 | 400 | /* Preserve bits 16:31 of erst_size */ |
66d4eadd SS |
401 | #define ERST_SIZE_MASK (0xffff << 16) |
402 | ||
403 | /* erst_dequeue bitmasks */ | |
404 | /* Dequeue ERST Segment Index (DESI) - Segment number (or alias) | |
405 | * where the current dequeue pointer lies. This is an optional HW hint. | |
406 | */ | |
407 | #define ERST_DESI_MASK (0x7) | |
408 | /* Event Handler Busy (EHB) - is the event ring scheduled to be serviced by | |
409 | * a work queue (or delayed service routine)? | |
410 | */ | |
411 | #define ERST_EHB (1 << 3) | |
0ebbab37 | 412 | #define ERST_PTR_MASK (0xf) |
74c68741 SS |
413 | |
414 | /** | |
415 | * struct xhci_run_regs | |
416 | * @microframe_index: | |
417 | * MFINDEX - current microframe number | |
418 | * | |
419 | * Section 5.5 Host Controller Runtime Registers: | |
420 | * "Software should read and write these registers using only Dword (32 bit) | |
421 | * or larger accesses" | |
422 | */ | |
423 | struct xhci_run_regs { | |
98441973 SS |
424 | u32 microframe_index; |
425 | u32 rsvd[7]; | |
426 | struct xhci_intr_reg ir_set[128]; | |
427 | }; | |
74c68741 | 428 | |
0ebbab37 SS |
429 | /** |
430 | * struct doorbell_array | |
431 | * | |
432 | * Section 5.6 | |
433 | */ | |
434 | struct xhci_doorbell_array { | |
435 | u32 doorbell[256]; | |
98441973 | 436 | }; |
0ebbab37 SS |
437 | |
438 | #define DB_TARGET_MASK 0xFFFFFF00 | |
439 | #define DB_STREAM_ID_MASK 0x0000FFFF | |
440 | #define DB_TARGET_HOST 0x0 | |
441 | #define DB_STREAM_ID_HOST 0x0 | |
442 | #define DB_MASK (0xff << 8) | |
443 | ||
d0e96f5a SS |
444 | /* Endpoint Target - bits 0:7 */ |
445 | #define EPI_TO_DB(p) (((p) + 1) & 0xff) | |
446 | ||
0ebbab37 | 447 | |
a74588f9 SS |
448 | /** |
449 | * struct xhci_slot_ctx | |
450 | * @dev_info: Route string, device speed, hub info, and last valid endpoint | |
451 | * @dev_info2: Max exit latency for device number, root hub port number | |
452 | * @tt_info: tt_info is used to construct split transaction tokens | |
453 | * @dev_state: slot state and device address | |
454 | * | |
455 | * Slot Context - section 6.2.1.1. This assumes the HC uses 32-byte context | |
456 | * structures. If the HC uses 64-byte contexts, there is an additional 32 bytes | |
457 | * reserved at the end of the slot context for HC internal use. | |
458 | */ | |
459 | struct xhci_slot_ctx { | |
460 | u32 dev_info; | |
461 | u32 dev_info2; | |
462 | u32 tt_info; | |
463 | u32 dev_state; | |
464 | /* offset 0x10 to 0x1f reserved for HC internal use */ | |
465 | u32 reserved[4]; | |
98441973 | 466 | }; |
a74588f9 SS |
467 | |
468 | /* dev_info bitmasks */ | |
469 | /* Route String - 0:19 */ | |
470 | #define ROUTE_STRING_MASK (0xfffff) | |
471 | /* Device speed - values defined by PORTSC Device Speed field - 20:23 */ | |
472 | #define DEV_SPEED (0xf << 20) | |
473 | /* bit 24 reserved */ | |
474 | /* Is this LS/FS device connected through a HS hub? - bit 25 */ | |
475 | #define DEV_MTT (0x1 << 25) | |
476 | /* Set if the device is a hub - bit 26 */ | |
477 | #define DEV_HUB (0x1 << 26) | |
478 | /* Index of the last valid endpoint context in this device context - 27:31 */ | |
3ffbba95 SS |
479 | #define LAST_CTX_MASK (0x1f << 27) |
480 | #define LAST_CTX(p) ((p) << 27) | |
481 | #define LAST_CTX_TO_EP_NUM(p) (((p) >> 27) - 1) | |
3ffbba95 SS |
482 | #define SLOT_FLAG (1 << 0) |
483 | #define EP0_FLAG (1 << 1) | |
a74588f9 SS |
484 | |
485 | /* dev_info2 bitmasks */ | |
486 | /* Max Exit Latency (ms) - worst case time to wake up all links in dev path */ | |
487 | #define MAX_EXIT (0xffff) | |
488 | /* Root hub port number that is needed to access the USB device */ | |
3ffbba95 | 489 | #define ROOT_HUB_PORT(p) (((p) & 0xff) << 16) |
a74588f9 SS |
490 | |
491 | /* tt_info bitmasks */ | |
492 | /* | |
493 | * TT Hub Slot ID - for low or full speed devices attached to a high-speed hub | |
494 | * The Slot ID of the hub that isolates the high speed signaling from | |
495 | * this low or full-speed device. '0' if attached to root hub port. | |
496 | */ | |
497 | #define TT_SLOT (0xff) | |
498 | /* | |
499 | * The number of the downstream facing port of the high-speed hub | |
500 | * '0' if the device is not low or full speed. | |
501 | */ | |
502 | #define TT_PORT (0xff << 8) | |
503 | ||
504 | /* dev_state bitmasks */ | |
505 | /* USB device address - assigned by the HC */ | |
3ffbba95 | 506 | #define DEV_ADDR_MASK (0xff) |
a74588f9 SS |
507 | /* bits 8:26 reserved */ |
508 | /* Slot state */ | |
509 | #define SLOT_STATE (0x1f << 27) | |
ae636747 | 510 | #define GET_SLOT_STATE(p) (((p) & (0x1f << 27)) >> 27) |
a74588f9 SS |
511 | |
512 | ||
513 | /** | |
514 | * struct xhci_ep_ctx | |
515 | * @ep_info: endpoint state, streams, mult, and interval information. | |
516 | * @ep_info2: information on endpoint type, max packet size, max burst size, | |
517 | * error count, and whether the HC will force an event for all | |
518 | * transactions. | |
3ffbba95 SS |
519 | * @deq: 64-bit ring dequeue pointer address. If the endpoint only |
520 | * defines one stream, this points to the endpoint transfer ring. | |
521 | * Otherwise, it points to a stream context array, which has a | |
522 | * ring pointer for each flow. | |
523 | * @tx_info: | |
524 | * Average TRB lengths for the endpoint ring and | |
525 | * max payload within an Endpoint Service Interval Time (ESIT). | |
a74588f9 SS |
526 | * |
527 | * Endpoint Context - section 6.2.1.2. This assumes the HC uses 32-byte context | |
528 | * structures. If the HC uses 64-byte contexts, there is an additional 32 bytes | |
529 | * reserved at the end of the endpoint context for HC internal use. | |
530 | */ | |
531 | struct xhci_ep_ctx { | |
532 | u32 ep_info; | |
533 | u32 ep_info2; | |
8e595a5d | 534 | u64 deq; |
3ffbba95 | 535 | u32 tx_info; |
a74588f9 | 536 | /* offset 0x14 - 0x1f reserved for HC internal use */ |
3ffbba95 | 537 | u32 reserved[3]; |
98441973 | 538 | }; |
a74588f9 SS |
539 | |
540 | /* ep_info bitmasks */ | |
541 | /* | |
542 | * Endpoint State - bits 0:2 | |
543 | * 0 - disabled | |
544 | * 1 - running | |
545 | * 2 - halted due to halt condition - ok to manipulate endpoint ring | |
546 | * 3 - stopped | |
547 | * 4 - TRB error | |
548 | * 5-7 - reserved | |
549 | */ | |
d0e96f5a SS |
550 | #define EP_STATE_MASK (0xf) |
551 | #define EP_STATE_DISABLED 0 | |
552 | #define EP_STATE_RUNNING 1 | |
553 | #define EP_STATE_HALTED 2 | |
554 | #define EP_STATE_STOPPED 3 | |
555 | #define EP_STATE_ERROR 4 | |
a74588f9 SS |
556 | /* Mult - Max number of burtst within an interval, in EP companion desc. */ |
557 | #define EP_MULT(p) ((p & 0x3) << 8) | |
558 | /* bits 10:14 are Max Primary Streams */ | |
559 | /* bit 15 is Linear Stream Array */ | |
560 | /* Interval - period between requests to an endpoint - 125u increments. */ | |
f94e0186 | 561 | #define EP_INTERVAL(p) ((p & 0xff) << 16) |
a74588f9 SS |
562 | |
563 | /* ep_info2 bitmasks */ | |
564 | /* | |
565 | * Force Event - generate transfer events for all TRBs for this endpoint | |
566 | * This will tell the HC to ignore the IOC and ISP flags (for debugging only). | |
567 | */ | |
568 | #define FORCE_EVENT (0x1) | |
569 | #define ERROR_COUNT(p) (((p) & 0x3) << 1) | |
570 | #define EP_TYPE(p) ((p) << 3) | |
571 | #define ISOC_OUT_EP 1 | |
572 | #define BULK_OUT_EP 2 | |
573 | #define INT_OUT_EP 3 | |
574 | #define CTRL_EP 4 | |
575 | #define ISOC_IN_EP 5 | |
576 | #define BULK_IN_EP 6 | |
577 | #define INT_IN_EP 7 | |
578 | /* bit 6 reserved */ | |
579 | /* bit 7 is Host Initiate Disable - for disabling stream selection */ | |
580 | #define MAX_BURST(p) (((p)&0xff) << 8) | |
581 | #define MAX_PACKET(p) (((p)&0xffff) << 16) | |
582 | ||
583 | ||
584 | /** | |
585 | * struct xhci_device_control | |
586 | * Input/Output context; see section 6.2.5. | |
587 | * | |
588 | * @drop_context: set the bit of the endpoint context you want to disable | |
589 | * @add_context: set the bit of the endpoint context you want to enable | |
590 | */ | |
591 | struct xhci_device_control { | |
592 | u32 drop_flags; | |
593 | u32 add_flags; | |
594 | u32 rsvd[6]; | |
595 | struct xhci_slot_ctx slot; | |
596 | struct xhci_ep_ctx ep[31]; | |
98441973 | 597 | }; |
a74588f9 SS |
598 | |
599 | /* drop context bitmasks */ | |
600 | #define DROP_EP(x) (0x1 << x) | |
601 | /* add context bitmasks */ | |
602 | #define ADD_EP(x) (0x1 << x) | |
603 | ||
604 | ||
3ffbba95 SS |
605 | struct xhci_virt_device { |
606 | /* | |
607 | * Commands to the hardware are passed an "input context" that | |
608 | * tells the hardware what to change in its data structures. | |
609 | * The hardware will return changes in an "output context" that | |
610 | * software must allocate for the hardware. We need to keep | |
611 | * track of input and output contexts separately because | |
612 | * these commands might fail and we don't trust the hardware. | |
613 | */ | |
614 | struct xhci_device_control *out_ctx; | |
615 | dma_addr_t out_ctx_dma; | |
616 | /* Used for addressing devices and configuration changes */ | |
617 | struct xhci_device_control *in_ctx; | |
618 | dma_addr_t in_ctx_dma; | |
619 | /* FIXME when stream support is added */ | |
620 | struct xhci_ring *ep_rings[31]; | |
f94e0186 SS |
621 | /* Temporary storage in case the configure endpoint command fails and we |
622 | * have to restore the device state to the previous state | |
623 | */ | |
624 | struct xhci_ring *new_ep_rings[31]; | |
625 | struct completion cmd_completion; | |
3ffbba95 SS |
626 | /* Status of the last command issued for this device */ |
627 | u32 cmd_status; | |
628 | }; | |
629 | ||
630 | ||
a74588f9 SS |
631 | /** |
632 | * struct xhci_device_context_array | |
633 | * @dev_context_ptr array of 64-bit DMA addresses for device contexts | |
634 | */ | |
635 | struct xhci_device_context_array { | |
636 | /* 64-bit device addresses; we only write 32-bit addresses */ | |
8e595a5d | 637 | u64 dev_context_ptrs[MAX_HC_SLOTS]; |
a74588f9 SS |
638 | /* private xHCD pointers */ |
639 | dma_addr_t dma; | |
98441973 | 640 | }; |
a74588f9 SS |
641 | /* TODO: write function to set the 64-bit device DMA address */ |
642 | /* | |
643 | * TODO: change this to be dynamically sized at HC mem init time since the HC | |
644 | * might not be able to handle the maximum number of devices possible. | |
645 | */ | |
646 | ||
647 | ||
648 | struct xhci_stream_ctx { | |
649 | /* 64-bit stream ring address, cycle state, and stream type */ | |
8e595a5d | 650 | u64 stream_ring; |
a74588f9 SS |
651 | /* offset 0x14 - 0x1f reserved for HC internal use */ |
652 | u32 reserved[2]; | |
98441973 | 653 | }; |
a74588f9 SS |
654 | |
655 | ||
0ebbab37 SS |
656 | struct xhci_transfer_event { |
657 | /* 64-bit buffer address, or immediate data */ | |
8e595a5d | 658 | u64 buffer; |
0ebbab37 SS |
659 | u32 transfer_len; |
660 | /* This field is interpreted differently based on the type of TRB */ | |
661 | u32 flags; | |
98441973 | 662 | }; |
0ebbab37 | 663 | |
d0e96f5a SS |
664 | /** Transfer Event bit fields **/ |
665 | #define TRB_TO_EP_ID(p) (((p) >> 16) & 0x1f) | |
666 | ||
0ebbab37 SS |
667 | /* Completion Code - only applicable for some types of TRBs */ |
668 | #define COMP_CODE_MASK (0xff << 24) | |
669 | #define GET_COMP_CODE(p) (((p) & COMP_CODE_MASK) >> 24) | |
670 | #define COMP_SUCCESS 1 | |
671 | /* Data Buffer Error */ | |
672 | #define COMP_DB_ERR 2 | |
673 | /* Babble Detected Error */ | |
674 | #define COMP_BABBLE 3 | |
675 | /* USB Transaction Error */ | |
676 | #define COMP_TX_ERR 4 | |
677 | /* TRB Error - some TRB field is invalid */ | |
678 | #define COMP_TRB_ERR 5 | |
679 | /* Stall Error - USB device is stalled */ | |
680 | #define COMP_STALL 6 | |
681 | /* Resource Error - HC doesn't have memory for that device configuration */ | |
682 | #define COMP_ENOMEM 7 | |
683 | /* Bandwidth Error - not enough room in schedule for this dev config */ | |
684 | #define COMP_BW_ERR 8 | |
685 | /* No Slots Available Error - HC ran out of device slots */ | |
686 | #define COMP_ENOSLOTS 9 | |
687 | /* Invalid Stream Type Error */ | |
688 | #define COMP_STREAM_ERR 10 | |
689 | /* Slot Not Enabled Error - doorbell rung for disabled device slot */ | |
690 | #define COMP_EBADSLT 11 | |
691 | /* Endpoint Not Enabled Error */ | |
692 | #define COMP_EBADEP 12 | |
693 | /* Short Packet */ | |
694 | #define COMP_SHORT_TX 13 | |
695 | /* Ring Underrun - doorbell rung for an empty isoc OUT ep ring */ | |
696 | #define COMP_UNDERRUN 14 | |
697 | /* Ring Overrun - isoc IN ep ring is empty when ep is scheduled to RX */ | |
698 | #define COMP_OVERRUN 15 | |
699 | /* Virtual Function Event Ring Full Error */ | |
700 | #define COMP_VF_FULL 16 | |
701 | /* Parameter Error - Context parameter is invalid */ | |
702 | #define COMP_EINVAL 17 | |
703 | /* Bandwidth Overrun Error - isoc ep exceeded its allocated bandwidth */ | |
704 | #define COMP_BW_OVER 18 | |
705 | /* Context State Error - illegal context state transition requested */ | |
706 | #define COMP_CTX_STATE 19 | |
707 | /* No Ping Response Error - HC didn't get PING_RESPONSE in time to TX */ | |
708 | #define COMP_PING_ERR 20 | |
709 | /* Event Ring is full */ | |
710 | #define COMP_ER_FULL 21 | |
711 | /* Missed Service Error - HC couldn't service an isoc ep within interval */ | |
712 | #define COMP_MISSED_INT 23 | |
713 | /* Successfully stopped command ring */ | |
714 | #define COMP_CMD_STOP 24 | |
715 | /* Successfully aborted current command and stopped command ring */ | |
716 | #define COMP_CMD_ABORT 25 | |
717 | /* Stopped - transfer was terminated by a stop endpoint command */ | |
718 | #define COMP_STOP 26 | |
719 | /* Same as COMP_EP_STOPPED, but the transfered length in the event is invalid */ | |
720 | #define COMP_STOP_INVAL 27 | |
721 | /* Control Abort Error - Debug Capability - control pipe aborted */ | |
722 | #define COMP_DBG_ABORT 28 | |
723 | /* TRB type 29 and 30 reserved */ | |
724 | /* Isoc Buffer Overrun - an isoc IN ep sent more data than could fit in TD */ | |
725 | #define COMP_BUFF_OVER 31 | |
726 | /* Event Lost Error - xHC has an "internal event overrun condition" */ | |
727 | #define COMP_ISSUES 32 | |
728 | /* Undefined Error - reported when other error codes don't apply */ | |
729 | #define COMP_UNKNOWN 33 | |
730 | /* Invalid Stream ID Error */ | |
731 | #define COMP_STRID_ERR 34 | |
732 | /* Secondary Bandwidth Error - may be returned by a Configure Endpoint cmd */ | |
733 | /* FIXME - check for this */ | |
734 | #define COMP_2ND_BW_ERR 35 | |
735 | /* Split Transaction Error */ | |
736 | #define COMP_SPLIT_ERR 36 | |
737 | ||
738 | struct xhci_link_trb { | |
739 | /* 64-bit segment pointer*/ | |
8e595a5d | 740 | u64 segment_ptr; |
0ebbab37 SS |
741 | u32 intr_target; |
742 | u32 control; | |
98441973 | 743 | }; |
0ebbab37 SS |
744 | |
745 | /* control bitfields */ | |
746 | #define LINK_TOGGLE (0x1<<1) | |
747 | ||
7f84eef0 SS |
748 | /* Command completion event TRB */ |
749 | struct xhci_event_cmd { | |
750 | /* Pointer to command TRB, or the value passed by the event data trb */ | |
8e595a5d | 751 | u64 cmd_trb; |
7f84eef0 SS |
752 | u32 status; |
753 | u32 flags; | |
98441973 | 754 | }; |
0ebbab37 | 755 | |
3ffbba95 SS |
756 | /* flags bitmasks */ |
757 | /* bits 16:23 are the virtual function ID */ | |
758 | /* bits 24:31 are the slot ID */ | |
759 | #define TRB_TO_SLOT_ID(p) (((p) & (0xff<<24)) >> 24) | |
760 | #define SLOT_ID_FOR_TRB(p) (((p) & 0xff) << 24) | |
0ebbab37 | 761 | |
ae636747 SS |
762 | /* Stop Endpoint TRB - ep_index to endpoint ID for this TRB */ |
763 | #define TRB_TO_EP_INDEX(p) ((((p) & (0x1f << 16)) >> 16) - 1) | |
764 | #define EP_ID_FOR_TRB(p) ((((p) + 1) & 0x1f) << 16) | |
765 | ||
766 | ||
0f2a7930 SS |
767 | /* Port Status Change Event TRB fields */ |
768 | /* Port ID - bits 31:24 */ | |
769 | #define GET_PORT_ID(p) (((p) & (0xff << 24)) >> 24) | |
770 | ||
0ebbab37 SS |
771 | /* Normal TRB fields */ |
772 | /* transfer_len bitmasks - bits 0:16 */ | |
773 | #define TRB_LEN(p) ((p) & 0x1ffff) | |
774 | /* TD size - number of bytes remaining in the TD (including this TRB): | |
775 | * bits 17 - 21. Shift the number of bytes by 10. */ | |
776 | #define TD_REMAINDER(p) ((((p) >> 10) & 0x1f) << 17) | |
777 | /* Interrupter Target - which MSI-X vector to target the completion event at */ | |
778 | #define TRB_INTR_TARGET(p) (((p) & 0x3ff) << 22) | |
779 | #define GET_INTR_TARGET(p) (((p) >> 22) & 0x3ff) | |
780 | ||
781 | /* Cycle bit - indicates TRB ownership by HC or HCD */ | |
782 | #define TRB_CYCLE (1<<0) | |
783 | /* | |
784 | * Force next event data TRB to be evaluated before task switch. | |
785 | * Used to pass OS data back after a TD completes. | |
786 | */ | |
787 | #define TRB_ENT (1<<1) | |
788 | /* Interrupt on short packet */ | |
789 | #define TRB_ISP (1<<2) | |
790 | /* Set PCIe no snoop attribute */ | |
791 | #define TRB_NO_SNOOP (1<<3) | |
792 | /* Chain multiple TRBs into a TD */ | |
793 | #define TRB_CHAIN (1<<4) | |
794 | /* Interrupt on completion */ | |
795 | #define TRB_IOC (1<<5) | |
796 | /* The buffer pointer contains immediate data */ | |
797 | #define TRB_IDT (1<<6) | |
798 | ||
799 | ||
800 | /* Control transfer TRB specific fields */ | |
801 | #define TRB_DIR_IN (1<<16) | |
802 | ||
7f84eef0 SS |
803 | struct xhci_generic_trb { |
804 | u32 field[4]; | |
98441973 | 805 | }; |
7f84eef0 SS |
806 | |
807 | union xhci_trb { | |
808 | struct xhci_link_trb link; | |
809 | struct xhci_transfer_event trans_event; | |
810 | struct xhci_event_cmd event_cmd; | |
811 | struct xhci_generic_trb generic; | |
812 | }; | |
813 | ||
0ebbab37 SS |
814 | /* TRB bit mask */ |
815 | #define TRB_TYPE_BITMASK (0xfc00) | |
816 | #define TRB_TYPE(p) ((p) << 10) | |
817 | /* TRB type IDs */ | |
818 | /* bulk, interrupt, isoc scatter/gather, and control data stage */ | |
819 | #define TRB_NORMAL 1 | |
820 | /* setup stage for control transfers */ | |
821 | #define TRB_SETUP 2 | |
822 | /* data stage for control transfers */ | |
823 | #define TRB_DATA 3 | |
824 | /* status stage for control transfers */ | |
825 | #define TRB_STATUS 4 | |
826 | /* isoc transfers */ | |
827 | #define TRB_ISOC 5 | |
828 | /* TRB for linking ring segments */ | |
829 | #define TRB_LINK 6 | |
830 | #define TRB_EVENT_DATA 7 | |
831 | /* Transfer Ring No-op (not for the command ring) */ | |
832 | #define TRB_TR_NOOP 8 | |
833 | /* Command TRBs */ | |
834 | /* Enable Slot Command */ | |
835 | #define TRB_ENABLE_SLOT 9 | |
836 | /* Disable Slot Command */ | |
837 | #define TRB_DISABLE_SLOT 10 | |
838 | /* Address Device Command */ | |
839 | #define TRB_ADDR_DEV 11 | |
840 | /* Configure Endpoint Command */ | |
841 | #define TRB_CONFIG_EP 12 | |
842 | /* Evaluate Context Command */ | |
843 | #define TRB_EVAL_CONTEXT 13 | |
a1587d97 SS |
844 | /* Reset Endpoint Command */ |
845 | #define TRB_RESET_EP 14 | |
0ebbab37 SS |
846 | /* Stop Transfer Ring Command */ |
847 | #define TRB_STOP_RING 15 | |
848 | /* Set Transfer Ring Dequeue Pointer Command */ | |
849 | #define TRB_SET_DEQ 16 | |
850 | /* Reset Device Command */ | |
851 | #define TRB_RESET_DEV 17 | |
852 | /* Force Event Command (opt) */ | |
853 | #define TRB_FORCE_EVENT 18 | |
854 | /* Negotiate Bandwidth Command (opt) */ | |
855 | #define TRB_NEG_BANDWIDTH 19 | |
856 | /* Set Latency Tolerance Value Command (opt) */ | |
857 | #define TRB_SET_LT 20 | |
858 | /* Get port bandwidth Command */ | |
859 | #define TRB_GET_BW 21 | |
860 | /* Force Header Command - generate a transaction or link management packet */ | |
861 | #define TRB_FORCE_HEADER 22 | |
862 | /* No-op Command - not for transfer rings */ | |
863 | #define TRB_CMD_NOOP 23 | |
864 | /* TRB IDs 24-31 reserved */ | |
865 | /* Event TRBS */ | |
866 | /* Transfer Event */ | |
867 | #define TRB_TRANSFER 32 | |
868 | /* Command Completion Event */ | |
869 | #define TRB_COMPLETION 33 | |
870 | /* Port Status Change Event */ | |
871 | #define TRB_PORT_STATUS 34 | |
872 | /* Bandwidth Request Event (opt) */ | |
873 | #define TRB_BANDWIDTH_EVENT 35 | |
874 | /* Doorbell Event (opt) */ | |
875 | #define TRB_DOORBELL 36 | |
876 | /* Host Controller Event */ | |
877 | #define TRB_HC_EVENT 37 | |
878 | /* Device Notification Event - device sent function wake notification */ | |
879 | #define TRB_DEV_NOTE 38 | |
880 | /* MFINDEX Wrap Event - microframe counter wrapped */ | |
881 | #define TRB_MFINDEX_WRAP 39 | |
882 | /* TRB IDs 40-47 reserved, 48-63 is vendor-defined */ | |
883 | ||
884 | /* | |
885 | * TRBS_PER_SEGMENT must be a multiple of 4, | |
886 | * since the command ring is 64-byte aligned. | |
887 | * It must also be greater than 16. | |
888 | */ | |
889 | #define TRBS_PER_SEGMENT 64 | |
890 | #define SEGMENT_SIZE (TRBS_PER_SEGMENT*16) | |
b10de142 SS |
891 | /* TRB buffer pointers can't cross 64KB boundaries */ |
892 | #define TRB_MAX_BUFF_SHIFT 16 | |
893 | #define TRB_MAX_BUFF_SIZE (1 << TRB_MAX_BUFF_SHIFT) | |
0ebbab37 SS |
894 | |
895 | struct xhci_segment { | |
896 | union xhci_trb *trbs; | |
897 | /* private to HCD */ | |
898 | struct xhci_segment *next; | |
899 | dma_addr_t dma; | |
98441973 | 900 | }; |
0ebbab37 | 901 | |
ae636747 SS |
902 | struct xhci_td { |
903 | struct list_head td_list; | |
904 | struct list_head cancelled_td_list; | |
905 | struct urb *urb; | |
906 | struct xhci_segment *start_seg; | |
907 | union xhci_trb *first_trb; | |
908 | union xhci_trb *last_trb; | |
909 | }; | |
910 | ||
0ebbab37 SS |
911 | struct xhci_ring { |
912 | struct xhci_segment *first_seg; | |
913 | union xhci_trb *enqueue; | |
7f84eef0 SS |
914 | struct xhci_segment *enq_seg; |
915 | unsigned int enq_updates; | |
0ebbab37 | 916 | union xhci_trb *dequeue; |
7f84eef0 SS |
917 | struct xhci_segment *deq_seg; |
918 | unsigned int deq_updates; | |
d0e96f5a | 919 | struct list_head td_list; |
ae636747 SS |
920 | /* ---- Related to URB cancellation ---- */ |
921 | struct list_head cancelled_td_list; | |
922 | unsigned int cancels_pending; | |
923 | unsigned int state; | |
924 | #define SET_DEQ_PENDING (1 << 0) | |
a1587d97 | 925 | #define EP_HALTED (1 << 1) |
ae636747 SS |
926 | /* The TRB that was last reported in a stopped endpoint ring */ |
927 | union xhci_trb *stopped_trb; | |
928 | struct xhci_td *stopped_td; | |
0ebbab37 SS |
929 | /* |
930 | * Write the cycle state into the TRB cycle field to give ownership of | |
931 | * the TRB to the host controller (if we are the producer), or to check | |
932 | * if we own the TRB (if we are the consumer). See section 4.9.1. | |
933 | */ | |
934 | u32 cycle_state; | |
935 | }; | |
936 | ||
937 | struct xhci_erst_entry { | |
938 | /* 64-bit event ring segment address */ | |
8e595a5d | 939 | u64 seg_addr; |
0ebbab37 SS |
940 | u32 seg_size; |
941 | /* Set to zero */ | |
942 | u32 rsvd; | |
98441973 | 943 | }; |
0ebbab37 SS |
944 | |
945 | struct xhci_erst { | |
946 | struct xhci_erst_entry *entries; | |
947 | unsigned int num_entries; | |
948 | /* xhci->event_ring keeps track of segment dma addresses */ | |
949 | dma_addr_t erst_dma_addr; | |
950 | /* Num entries the ERST can contain */ | |
951 | unsigned int erst_size; | |
952 | }; | |
953 | ||
954 | /* | |
955 | * Each segment table entry is 4*32bits long. 1K seems like an ok size: | |
956 | * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table, | |
957 | * meaning 64 ring segments. | |
958 | * Initial allocated size of the ERST, in number of entries */ | |
959 | #define ERST_NUM_SEGS 1 | |
960 | /* Initial allocated size of the ERST, in number of entries */ | |
961 | #define ERST_SIZE 64 | |
962 | /* Initial number of event segment rings allocated */ | |
963 | #define ERST_ENTRIES 1 | |
7f84eef0 SS |
964 | /* Poll every 60 seconds */ |
965 | #define POLL_TIMEOUT 60 | |
0ebbab37 SS |
966 | /* XXX: Make these module parameters */ |
967 | ||
74c68741 SS |
968 | |
969 | /* There is one ehci_hci structure per controller */ | |
970 | struct xhci_hcd { | |
971 | /* glue to PCI and HCD framework */ | |
972 | struct xhci_cap_regs __iomem *cap_regs; | |
973 | struct xhci_op_regs __iomem *op_regs; | |
974 | struct xhci_run_regs __iomem *run_regs; | |
0ebbab37 | 975 | struct xhci_doorbell_array __iomem *dba; |
66d4eadd | 976 | /* Our HCD's current interrupter register set */ |
98441973 | 977 | struct xhci_intr_reg __iomem *ir_set; |
74c68741 SS |
978 | |
979 | /* Cached register copies of read-only HC data */ | |
980 | __u32 hcs_params1; | |
981 | __u32 hcs_params2; | |
982 | __u32 hcs_params3; | |
983 | __u32 hcc_params; | |
984 | ||
985 | spinlock_t lock; | |
986 | ||
987 | /* packed release number */ | |
988 | u8 sbrn; | |
989 | u16 hci_version; | |
990 | u8 max_slots; | |
991 | u8 max_interrupters; | |
992 | u8 max_ports; | |
993 | u8 isoc_threshold; | |
994 | int event_ring_max; | |
995 | int addr_64; | |
66d4eadd | 996 | /* 4KB min, 128MB max */ |
74c68741 | 997 | int page_size; |
66d4eadd SS |
998 | /* Valid values are 12 to 20, inclusive */ |
999 | int page_shift; | |
1000 | /* only one MSI vector for now, but might need more later */ | |
1001 | int msix_count; | |
1002 | struct msix_entry *msix_entries; | |
0ebbab37 | 1003 | /* data structures */ |
a74588f9 | 1004 | struct xhci_device_context_array *dcbaa; |
0ebbab37 SS |
1005 | struct xhci_ring *cmd_ring; |
1006 | struct xhci_ring *event_ring; | |
1007 | struct xhci_erst erst; | |
3ffbba95 SS |
1008 | /* slot enabling and address device helpers */ |
1009 | struct completion addr_dev; | |
1010 | int slot_id; | |
1011 | /* Internal mirror of the HW's dcbaa */ | |
1012 | struct xhci_virt_device *devs[MAX_HC_SLOTS]; | |
0ebbab37 SS |
1013 | |
1014 | /* DMA pools */ | |
1015 | struct dma_pool *device_pool; | |
1016 | struct dma_pool *segment_pool; | |
7f84eef0 SS |
1017 | |
1018 | #ifdef CONFIG_USB_XHCI_HCD_DEBUGGING | |
1019 | /* Poll the rings - for debugging */ | |
1020 | struct timer_list event_ring_timer; | |
1021 | int zombie; | |
1022 | #endif | |
1023 | /* Statistics */ | |
1024 | int noops_submitted; | |
1025 | int noops_handled; | |
1026 | int error_bitmask; | |
74c68741 SS |
1027 | }; |
1028 | ||
7f84eef0 SS |
1029 | /* For testing purposes */ |
1030 | #define NUM_TEST_NOOPS 0 | |
1031 | ||
74c68741 SS |
1032 | /* convert between an HCD pointer and the corresponding EHCI_HCD */ |
1033 | static inline struct xhci_hcd *hcd_to_xhci(struct usb_hcd *hcd) | |
1034 | { | |
1035 | return (struct xhci_hcd *) (hcd->hcd_priv); | |
1036 | } | |
1037 | ||
1038 | static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci) | |
1039 | { | |
1040 | return container_of((void *) xhci, struct usb_hcd, hcd_priv); | |
1041 | } | |
1042 | ||
1043 | #ifdef CONFIG_USB_XHCI_HCD_DEBUGGING | |
1044 | #define XHCI_DEBUG 1 | |
1045 | #else | |
1046 | #define XHCI_DEBUG 0 | |
1047 | #endif | |
1048 | ||
1049 | #define xhci_dbg(xhci, fmt, args...) \ | |
1050 | do { if (XHCI_DEBUG) dev_dbg(xhci_to_hcd(xhci)->self.controller , fmt , ## args); } while (0) | |
1051 | #define xhci_info(xhci, fmt, args...) \ | |
1052 | do { if (XHCI_DEBUG) dev_info(xhci_to_hcd(xhci)->self.controller , fmt , ## args); } while (0) | |
1053 | #define xhci_err(xhci, fmt, args...) \ | |
1054 | dev_err(xhci_to_hcd(xhci)->self.controller , fmt , ## args) | |
1055 | #define xhci_warn(xhci, fmt, args...) \ | |
1056 | dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args) | |
1057 | ||
1058 | /* TODO: copied from ehci.h - can be refactored? */ | |
1059 | /* xHCI spec says all registers are little endian */ | |
1060 | static inline unsigned int xhci_readl(const struct xhci_hcd *xhci, | |
1061 | __u32 __iomem *regs) | |
1062 | { | |
1063 | return readl(regs); | |
1064 | } | |
045f123d | 1065 | static inline void xhci_writel(struct xhci_hcd *xhci, |
74c68741 SS |
1066 | const unsigned int val, __u32 __iomem *regs) |
1067 | { | |
66e49d87 SS |
1068 | xhci_dbg(xhci, |
1069 | "`MEM_WRITE_DWORD(3'b000, 32'h%p, 32'h%0x, 4'hf);\n", | |
1070 | regs, val); | |
74c68741 SS |
1071 | writel(val, regs); |
1072 | } | |
1073 | ||
8e595a5d SS |
1074 | /* |
1075 | * Registers should always be accessed with double word or quad word accesses. | |
1076 | * | |
1077 | * Some xHCI implementations may support 64-bit address pointers. Registers | |
1078 | * with 64-bit address pointers should be written to with dword accesses by | |
1079 | * writing the low dword first (ptr[0]), then the high dword (ptr[1]) second. | |
1080 | * xHCI implementations that do not support 64-bit address pointers will ignore | |
1081 | * the high dword, and write order is irrelevant. | |
1082 | */ | |
1083 | static inline u64 xhci_read_64(const struct xhci_hcd *xhci, | |
1084 | __u64 __iomem *regs) | |
1085 | { | |
1086 | __u32 __iomem *ptr = (__u32 __iomem *) regs; | |
1087 | u64 val_lo = readl(ptr); | |
1088 | u64 val_hi = readl(ptr + 1); | |
1089 | return val_lo + (val_hi << 32); | |
1090 | } | |
1091 | static inline void xhci_write_64(struct xhci_hcd *xhci, | |
1092 | const u64 val, __u64 __iomem *regs) | |
1093 | { | |
1094 | __u32 __iomem *ptr = (__u32 __iomem *) regs; | |
1095 | u32 val_lo = lower_32_bits(val); | |
1096 | u32 val_hi = upper_32_bits(val); | |
1097 | ||
66e49d87 SS |
1098 | xhci_dbg(xhci, |
1099 | "`MEM_WRITE_DWORD(3'b000, 64'h%p, 64'h%0lx, 4'hf);\n", | |
1100 | regs, (long unsigned int) val); | |
8e595a5d SS |
1101 | writel(val_lo, ptr); |
1102 | writel(val_hi, ptr + 1); | |
1103 | } | |
1104 | ||
66d4eadd | 1105 | /* xHCI debugging */ |
98441973 | 1106 | void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num); |
66d4eadd | 1107 | void xhci_print_registers(struct xhci_hcd *xhci); |
0ebbab37 SS |
1108 | void xhci_dbg_regs(struct xhci_hcd *xhci); |
1109 | void xhci_print_run_regs(struct xhci_hcd *xhci); | |
d0e96f5a SS |
1110 | void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb); |
1111 | void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb); | |
7f84eef0 | 1112 | void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg); |
0ebbab37 SS |
1113 | void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring); |
1114 | void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst); | |
1115 | void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci); | |
7f84eef0 | 1116 | void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring); |
3ffbba95 | 1117 | void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_device_control *ctx, dma_addr_t dma, unsigned int last_ep); |
66d4eadd SS |
1118 | |
1119 | /* xHCI memory managment */ | |
1120 | void xhci_mem_cleanup(struct xhci_hcd *xhci); | |
1121 | int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags); | |
3ffbba95 SS |
1122 | void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id); |
1123 | int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, struct usb_device *udev, gfp_t flags); | |
1124 | int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev); | |
d0e96f5a | 1125 | unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc); |
f94e0186 SS |
1126 | unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc); |
1127 | void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep); | |
f88ba78d SS |
1128 | int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, |
1129 | struct usb_device *udev, struct usb_host_endpoint *ep, | |
1130 | gfp_t mem_flags); | |
f94e0186 | 1131 | void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring); |
66d4eadd SS |
1132 | |
1133 | #ifdef CONFIG_PCI | |
1134 | /* xHCI PCI glue */ | |
1135 | int xhci_register_pci(void); | |
1136 | void xhci_unregister_pci(void); | |
1137 | #endif | |
1138 | ||
1139 | /* xHCI host controller glue */ | |
1140 | int xhci_halt(struct xhci_hcd *xhci); | |
1141 | int xhci_reset(struct xhci_hcd *xhci); | |
1142 | int xhci_init(struct usb_hcd *hcd); | |
1143 | int xhci_run(struct usb_hcd *hcd); | |
1144 | void xhci_stop(struct usb_hcd *hcd); | |
1145 | void xhci_shutdown(struct usb_hcd *hcd); | |
1146 | int xhci_get_frame(struct usb_hcd *hcd); | |
7f84eef0 | 1147 | irqreturn_t xhci_irq(struct usb_hcd *hcd); |
3ffbba95 SS |
1148 | int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev); |
1149 | void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev); | |
1150 | int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev); | |
d0e96f5a SS |
1151 | int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags); |
1152 | int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status); | |
f94e0186 SS |
1153 | int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); |
1154 | int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); | |
a1587d97 | 1155 | void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep); |
f94e0186 SS |
1156 | int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); |
1157 | void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); | |
7f84eef0 SS |
1158 | |
1159 | /* xHCI ring, segment, TRB, and TD functions */ | |
23e3be11 SS |
1160 | dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb); |
1161 | void xhci_ring_cmd_db(struct xhci_hcd *xhci); | |
1162 | void *xhci_setup_one_noop(struct xhci_hcd *xhci); | |
b7258a4a | 1163 | void xhci_handle_event(struct xhci_hcd *xhci); |
23e3be11 SS |
1164 | void xhci_set_hc_event_deq(struct xhci_hcd *xhci); |
1165 | int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id); | |
1166 | int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, | |
1167 | u32 slot_id); | |
1168 | int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, int slot_id, | |
ae636747 | 1169 | unsigned int ep_index); |
23e3be11 SS |
1170 | int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, |
1171 | int slot_id, unsigned int ep_index); | |
1172 | int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, | |
1173 | int slot_id, unsigned int ep_index); | |
1174 | int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, | |
1175 | u32 slot_id); | |
a1587d97 SS |
1176 | int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id, |
1177 | unsigned int ep_index); | |
66d4eadd | 1178 | |
0f2a7930 SS |
1179 | /* xHCI roothub code */ |
1180 | int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, | |
1181 | char *buf, u16 wLength); | |
1182 | int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); | |
1183 | ||
74c68741 | 1184 | #endif /* __LINUX_XHCI_HCD_H */ |