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authorAnton Vorontsov <avorontsov@ru.mvista.com>2009-01-09 21:03:21 -0500
committerGreg Kroah-Hartman <gregkh@kvm.kroah.org>2009-01-27 19:15:38 -0500
commit236dd4d18f293e3c9798f35c08272196826a980d (patch)
tree5e8f7dc48318e82c34758c1a807d034034b96221 /drivers/usb/host
parentfc91be2ad03e0d243418414a854665274d560ca2 (diff)
USB: Driver for Freescale QUICC Engine USB Host Controller
This patch adds support for the FHCI USB controller, as found in the Freescale MPC836x and MPC832x processors. It can support Full or Low speed modes. Quite a lot the hardware is doing by itself (SOF generation, CRC generation and checking), though scheduling and retransmission is on software's shoulders. This controller does not integrate the root hub, so this driver also fakes one-port hub. External hub is required to support more than one device. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host')
-rw-r--r--drivers/usb/host/Kconfig17
-rw-r--r--drivers/usb/host/Makefile6
-rw-r--r--drivers/usb/host/fhci-dbg.c139
-rw-r--r--drivers/usb/host/fhci-hcd.c836
-rw-r--r--drivers/usb/host/fhci-hub.c345
-rw-r--r--drivers/usb/host/fhci-mem.c113
-rw-r--r--drivers/usb/host/fhci-q.c284
-rw-r--r--drivers/usb/host/fhci-sched.c888
-rw-r--r--drivers/usb/host/fhci-tds.c626
-rw-r--r--drivers/usb/host/fhci.h607
10 files changed, 3861 insertions, 0 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 5a988f4cdf87..2c63bfb1f8d9 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -239,6 +239,23 @@ config USB_UHCI_HCD
239 To compile this driver as a module, choose M here: the 239 To compile this driver as a module, choose M here: the
240 module will be called uhci-hcd. 240 module will be called uhci-hcd.
241 241
242config USB_FHCI_HCD
243 tristate "Freescale QE USB Host Controller support"
244 depends on USB && OF_GPIO && QE_GPIO && QUICC_ENGINE
245 select FSL_GTM
246 select QE_USB
247 help
248 This driver enables support for Freescale QE USB Host Controller
249 (as found on MPC8360 and MPC8323 processors), the driver supports
250 Full and Low Speed USB.
251
252config FHCI_DEBUG
253 bool "Freescale QE USB Host Controller debug support"
254 depends on USB_FHCI_HCD && DEBUG_FS
255 help
256 Say "y" to see some FHCI debug information and statistics
257 throught debugfs.
258
242config USB_U132_HCD 259config USB_U132_HCD
243 tristate "Elan U132 Adapter Host Controller" 260 tristate "Elan U132 Adapter Host Controller"
244 depends on USB && USB_FTDI_ELAN 261 depends on USB && USB_FTDI_ELAN
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index e5f3f20787e4..f163571e33d8 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -7,6 +7,11 @@ ifeq ($(CONFIG_USB_DEBUG),y)
7endif 7endif
8 8
9isp1760-objs := isp1760-hcd.o isp1760-if.o 9isp1760-objs := isp1760-hcd.o isp1760-if.o
10fhci-objs := fhci-hcd.o fhci-hub.o fhci-q.o fhci-mem.o \
11 fhci-tds.o fhci-sched.o
12ifeq ($(CONFIG_FHCI_DEBUG),y)
13fhci-objs += fhci-dbg.o
14endif
10 15
11obj-$(CONFIG_USB_WHCI_HCD) += whci/ 16obj-$(CONFIG_USB_WHCI_HCD) += whci/
12 17
@@ -17,6 +22,7 @@ obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
17obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o 22obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
18obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o 23obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
19obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o 24obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
25obj-$(CONFIG_USB_FHCI_HCD) += fhci.o
20obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o 26obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
21obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o 27obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
22obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o 28obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o
diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c
new file mode 100644
index 000000000000..34e14edf390b
--- /dev/null
+++ b/drivers/usb/host/fhci-dbg.c
@@ -0,0 +1,139 @@
1/*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18#include <linux/kernel.h>
19#include <linux/errno.h>
20#include <linux/debugfs.h>
21#include <linux/seq_file.h>
22#include <linux/usb.h>
23#include "../core/hcd.h"
24#include "fhci.h"
25
26void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er)
27{
28 int i;
29
30 if (usb_er == -1) {
31 fhci->usb_irq_stat[12]++;
32 return;
33 }
34
35 for (i = 0; i < 12; ++i) {
36 if (usb_er & (1 << i))
37 fhci->usb_irq_stat[i]++;
38 }
39}
40
41static int fhci_dfs_regs_show(struct seq_file *s, void *v)
42{
43 struct fhci_hcd *fhci = s->private;
44 struct fhci_regs __iomem *regs = fhci->regs;
45
46 seq_printf(s,
47 "mode: 0x%x\n" "addr: 0x%x\n"
48 "command: 0x%x\n" "ep0: 0x%x\n"
49 "event: 0x%x\n" "mask: 0x%x\n"
50 "status: 0x%x\n" "SOF timer: %d\n"
51 "frame number: %d\n"
52 "lines status: 0x%x\n",
53 in_8(&regs->usb_mod), in_8(&regs->usb_addr),
54 in_8(&regs->usb_comm), in_be16(&regs->usb_ep[0]),
55 in_be16(&regs->usb_event), in_be16(&regs->usb_mask),
56 in_8(&regs->usb_status), in_be16(&regs->usb_sof_tmr),
57 in_be16(&regs->usb_frame_num),
58 fhci_ioports_check_bus_state(fhci));
59
60 return 0;
61}
62
63static int fhci_dfs_irq_stat_show(struct seq_file *s, void *v)
64{
65 struct fhci_hcd *fhci = s->private;
66 int *usb_irq_stat = fhci->usb_irq_stat;
67
68 seq_printf(s,
69 "RXB: %d\n" "TXB: %d\n" "BSY: %d\n"
70 "SOF: %d\n" "TXE0: %d\n" "TXE1: %d\n"
71 "TXE2: %d\n" "TXE3: %d\n" "IDLE: %d\n"
72 "RESET: %d\n" "SFT: %d\n" "MSF: %d\n"
73 "IDLE_ONLY: %d\n",
74 usb_irq_stat[0], usb_irq_stat[1], usb_irq_stat[2],
75 usb_irq_stat[3], usb_irq_stat[4], usb_irq_stat[5],
76 usb_irq_stat[6], usb_irq_stat[7], usb_irq_stat[8],
77 usb_irq_stat[9], usb_irq_stat[10], usb_irq_stat[11],
78 usb_irq_stat[12]);
79
80 return 0;
81}
82
83static int fhci_dfs_regs_open(struct inode *inode, struct file *file)
84{
85 return single_open(file, fhci_dfs_regs_show, inode->i_private);
86}
87
88static int fhci_dfs_irq_stat_open(struct inode *inode, struct file *file)
89{
90 return single_open(file, fhci_dfs_irq_stat_show, inode->i_private);
91}
92
93static const struct file_operations fhci_dfs_regs_fops = {
94 .open = fhci_dfs_regs_open,
95 .read = seq_read,
96 .llseek = seq_lseek,
97 .release = single_release,
98};
99
100static const struct file_operations fhci_dfs_irq_stat_fops = {
101 .open = fhci_dfs_irq_stat_open,
102 .read = seq_read,
103 .llseek = seq_lseek,
104 .release = single_release,
105};
106
107void fhci_dfs_create(struct fhci_hcd *fhci)
108{
109 struct device *dev = fhci_to_hcd(fhci)->self.controller;
110
111 fhci->dfs_root = debugfs_create_dir(dev->bus_id, NULL);
112 if (!fhci->dfs_root) {
113 WARN_ON(1);
114 return;
115 }
116
117 fhci->dfs_regs = debugfs_create_file("regs", S_IFREG | S_IRUGO,
118 fhci->dfs_root, fhci, &fhci_dfs_regs_fops);
119
120 fhci->dfs_irq_stat = debugfs_create_file("irq_stat",
121 S_IFREG | S_IRUGO, fhci->dfs_root, fhci,
122 &fhci_dfs_irq_stat_fops);
123
124 WARN_ON(!fhci->dfs_regs || !fhci->dfs_irq_stat);
125}
126
127void fhci_dfs_destroy(struct fhci_hcd *fhci)
128{
129 if (!fhci->dfs_root)
130 return;
131
132 if (fhci->dfs_irq_stat)
133 debugfs_remove(fhci->dfs_irq_stat);
134
135 if (fhci->dfs_regs)
136 debugfs_remove(fhci->dfs_regs);
137
138 debugfs_remove(fhci->dfs_root);
139}
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
new file mode 100644
index 000000000000..ba622cc8a9ba
--- /dev/null
+++ b/drivers/usb/host/fhci-hcd.c
@@ -0,0 +1,836 @@
1/*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18#include <linux/module.h>
19#include <linux/types.h>
20#include <linux/spinlock.h>
21#include <linux/kernel.h>
22#include <linux/delay.h>
23#include <linux/errno.h>
24#include <linux/list.h>
25#include <linux/interrupt.h>
26#include <linux/io.h>
27#include <linux/usb.h>
28#include <linux/of_platform.h>
29#include <linux/of_gpio.h>
30#include <asm/qe.h>
31#include <asm/fsl_gtm.h>
32#include "../core/hcd.h"
33#include "fhci.h"
34
35void fhci_start_sof_timer(struct fhci_hcd *fhci)
36{
37 fhci_dbg(fhci, "-> %s\n", __func__);
38
39 /* clear frame_n */
40 out_be16(&fhci->pram->frame_num, 0);
41
42 out_be16(&fhci->regs->usb_sof_tmr, 0);
43 setbits8(&fhci->regs->usb_mod, USB_MODE_SFTE);
44
45 fhci_dbg(fhci, "<- %s\n", __func__);
46}
47
48void fhci_stop_sof_timer(struct fhci_hcd *fhci)
49{
50 fhci_dbg(fhci, "-> %s\n", __func__);
51
52 clrbits8(&fhci->regs->usb_mod, USB_MODE_SFTE);
53 gtm_stop_timer16(fhci->timer);
54
55 fhci_dbg(fhci, "<- %s\n", __func__);
56}
57
58u16 fhci_get_sof_timer_count(struct fhci_usb *usb)
59{
60 return be16_to_cpu(in_be16(&usb->fhci->regs->usb_sof_tmr) / 12);
61}
62
63/* initialize the endpoint zero */
64static u32 endpoint_zero_init(struct fhci_usb *usb,
65 enum fhci_mem_alloc data_mem,
66 u32 ring_len)
67{
68 u32 rc;
69
70 rc = fhci_create_ep(usb, data_mem, ring_len);
71 if (rc)
72 return rc;
73
74 /* inilialize endpoint registers */
75 fhci_init_ep_registers(usb, usb->ep0, data_mem);
76
77 return 0;
78}
79
80/* enable the USB interrupts */
81void fhci_usb_enable_interrupt(struct fhci_usb *usb)
82{
83 struct fhci_hcd *fhci = usb->fhci;
84
85 if (usb->intr_nesting_cnt == 1) {
86 /* initialize the USB interrupt */
87 enable_irq(fhci_to_hcd(fhci)->irq);
88
89 /* initialize the event register and mask register */
90 out_be16(&usb->fhci->regs->usb_event, 0xffff);
91 out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
92
93 /* enable the timer interrupts */
94 enable_irq(fhci->timer->irq);
95 } else if (usb->intr_nesting_cnt > 1)
96 fhci_info(fhci, "unbalanced USB interrupts nesting\n");
97 usb->intr_nesting_cnt--;
98}
99
100/* diable the usb interrupt */
101void fhci_usb_disable_interrupt(struct fhci_usb *usb)
102{
103 struct fhci_hcd *fhci = usb->fhci;
104
105 if (usb->intr_nesting_cnt == 0) {
106 /* diable the timer interrupt */
107 disable_irq_nosync(fhci->timer->irq);
108
109 /* disable the usb interrupt */
110 disable_irq_nosync(fhci_to_hcd(fhci)->irq);
111 out_be16(&usb->fhci->regs->usb_mask, 0);
112 }
113 usb->intr_nesting_cnt++;
114}
115
116/* enable the USB controller */
117static u32 fhci_usb_enable(struct fhci_hcd *fhci)
118{
119 struct fhci_usb *usb = fhci->usb_lld;
120
121 out_be16(&usb->fhci->regs->usb_event, 0xffff);
122 out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
123 setbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN);
124
125 mdelay(100);
126
127 return 0;
128}
129
130/* disable the USB controller */
131static u32 fhci_usb_disable(struct fhci_hcd *fhci)
132{
133 struct fhci_usb *usb = fhci->usb_lld;
134
135 fhci_usb_disable_interrupt(usb);
136 fhci_port_disable(fhci);
137
138 /* disable the usb controller */
139 if (usb->port_status == FHCI_PORT_FULL ||
140 usb->port_status == FHCI_PORT_LOW)
141 fhci_device_disconnected_interrupt(fhci);
142
143 clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN);
144
145 return 0;
146}
147
148/* check the bus state by polling the QE bit on the IO ports */
149int fhci_ioports_check_bus_state(struct fhci_hcd *fhci)
150{
151 u8 bits = 0;
152
153 /* check USBOE,if transmitting,exit */
154 if (!gpio_get_value(fhci->gpios[GPIO_USBOE]))
155 return -1;
156
157 /* check USBRP */
158 if (gpio_get_value(fhci->gpios[GPIO_USBRP]))
159 bits |= 0x2;
160
161 /* check USBRN */
162 if (gpio_get_value(fhci->gpios[GPIO_USBRN]))
163 bits |= 0x1;
164
165 return bits;
166}
167
168static void fhci_mem_free(struct fhci_hcd *fhci)
169{
170 struct ed *ed;
171 struct ed *next_ed;
172 struct td *td;
173 struct td *next_td;
174
175 list_for_each_entry_safe(ed, next_ed, &fhci->empty_eds, node) {
176 list_del(&ed->node);
177 kfree(ed);
178 }
179
180 list_for_each_entry_safe(td, next_td, &fhci->empty_tds, node) {
181 list_del(&td->node);
182 kfree(td);
183 }
184
185 kfree(fhci->vroot_hub);
186 fhci->vroot_hub = NULL;
187
188 kfree(fhci->hc_list);
189 fhci->hc_list = NULL;
190}
191
192static int fhci_mem_init(struct fhci_hcd *fhci)
193{
194 int i;
195
196 fhci->hc_list = kzalloc(sizeof(*fhci->hc_list), GFP_KERNEL);
197 if (!fhci->hc_list)
198 goto err;
199
200 INIT_LIST_HEAD(&fhci->hc_list->ctrl_list);
201 INIT_LIST_HEAD(&fhci->hc_list->bulk_list);
202 INIT_LIST_HEAD(&fhci->hc_list->iso_list);
203 INIT_LIST_HEAD(&fhci->hc_list->intr_list);
204 INIT_LIST_HEAD(&fhci->hc_list->done_list);
205
206 fhci->vroot_hub = kzalloc(sizeof(*fhci->vroot_hub), GFP_KERNEL);
207 if (!fhci->vroot_hub)
208 goto err;
209
210 INIT_LIST_HEAD(&fhci->empty_eds);
211 INIT_LIST_HEAD(&fhci->empty_tds);
212
213 /* initialize work queue to handle done list */
214 fhci_tasklet.data = (unsigned long)fhci;
215 fhci->process_done_task = &fhci_tasklet;
216
217 for (i = 0; i < MAX_TDS; i++) {
218 struct td *td;
219
220 td = kmalloc(sizeof(*td), GFP_KERNEL);
221 if (!td)
222 goto err;
223 fhci_recycle_empty_td(fhci, td);
224 }
225 for (i = 0; i < MAX_EDS; i++) {
226 struct ed *ed;
227
228 ed = kmalloc(sizeof(*ed), GFP_KERNEL);
229 if (!ed)
230 goto err;
231 fhci_recycle_empty_ed(fhci, ed);
232 }
233
234 fhci->active_urbs = 0;
235 return 0;
236err:
237 fhci_mem_free(fhci);
238 return -ENOMEM;
239}
240
241/* destroy the fhci_usb structure */
242static void fhci_usb_free(void *lld)
243{
244 struct fhci_usb *usb = lld;
245 struct fhci_hcd *fhci = usb->fhci;
246
247 if (usb) {
248 fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
249 fhci_ep0_free(usb);
250 kfree(usb->actual_frame);
251 kfree(usb);
252 }
253}
254
255/* initialize the USB */
256static int fhci_usb_init(struct fhci_hcd *fhci)
257{
258 struct fhci_usb *usb = fhci->usb_lld;
259
260 memset_io(usb->fhci->pram, 0, FHCI_PRAM_SIZE);
261
262 usb->port_status = FHCI_PORT_DISABLED;
263 usb->max_frame_usage = FRAME_TIME_USAGE;
264 usb->sw_transaction_time = SW_FIX_TIME_BETWEEN_TRANSACTION;
265
266 usb->actual_frame = kzalloc(sizeof(*usb->actual_frame), GFP_KERNEL);
267 if (!usb->actual_frame) {
268 fhci_usb_free(usb);
269 return -ENOMEM;
270 }
271
272 INIT_LIST_HEAD(&usb->actual_frame->tds_list);
273
274 /* initializing registers on chip, clear frame number */
275 out_be16(&fhci->pram->frame_num, 0);
276
277 /* clear rx state */
278 out_be32(&fhci->pram->rx_state, 0);
279
280 /* set mask register */
281 usb->saved_msk = (USB_E_TXB_MASK |
282 USB_E_TXE1_MASK |
283 USB_E_IDLE_MASK |
284 USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK);
285
286 out_8(&usb->fhci->regs->usb_mod, USB_MODE_HOST | USB_MODE_EN);
287
288 /* clearing the mask register */
289 out_be16(&usb->fhci->regs->usb_mask, 0);
290
291 /* initialing the event register */
292 out_be16(&usb->fhci->regs->usb_event, 0xffff);
293
294 if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) {
295 fhci_usb_free(usb);
296 return -EINVAL;
297 }
298
299 return 0;
300}
301
302/* initialize the fhci_usb struct and the corresponding data staruct */
303static struct fhci_usb *fhci_create_lld(struct fhci_hcd *fhci)
304{
305 struct fhci_usb *usb;
306
307 /* allocate memory for SCC data structure */
308 usb = kzalloc(sizeof(*usb), GFP_KERNEL);
309 if (!usb) {
310 fhci_err(fhci, "no memory for SCC data struct\n");
311 return NULL;
312 }
313
314 usb->fhci = fhci;
315 usb->hc_list = fhci->hc_list;
316 usb->vroot_hub = fhci->vroot_hub;
317
318 usb->transfer_confirm = fhci_transfer_confirm_callback;
319
320 return usb;
321}
322
323static int fhci_start(struct usb_hcd *hcd)
324{
325 int ret;
326 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
327
328 ret = fhci_mem_init(fhci);
329 if (ret) {
330 fhci_err(fhci, "failed to allocate memory\n");
331 goto err;
332 }
333
334 fhci->usb_lld = fhci_create_lld(fhci);
335 if (!fhci->usb_lld) {
336 fhci_err(fhci, "low level driver config failed\n");
337 ret = -ENOMEM;
338 goto err;
339 }
340
341 ret = fhci_usb_init(fhci);
342 if (ret) {
343 fhci_err(fhci, "low level driver initialize failed\n");
344 goto err;
345 }
346
347 spin_lock_init(&fhci->lock);
348
349 /* connect the virtual root hub */
350 fhci->vroot_hub->dev_num = 1; /* this field may be needed to fix */
351 fhci->vroot_hub->hub.wHubStatus = 0;
352 fhci->vroot_hub->hub.wHubChange = 0;
353 fhci->vroot_hub->port.wPortStatus = 0;
354 fhci->vroot_hub->port.wPortChange = 0;
355
356 hcd->state = HC_STATE_RUNNING;
357
358 /*
359 * From here on, khubd concurrently accesses the root
360 * hub; drivers will be talking to enumerated devices.
361 * (On restart paths, khubd already knows about the root
362 * hub and could find work as soon as we wrote FLAG_CF.)
363 *
364 * Before this point the HC was idle/ready. After, khubd
365 * and device drivers may start it running.
366 */
367 fhci_usb_enable(fhci);
368 return 0;
369err:
370 fhci_mem_free(fhci);
371 return ret;
372}
373
374static void fhci_stop(struct usb_hcd *hcd)
375{
376 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
377
378 fhci_usb_disable_interrupt(fhci->usb_lld);
379 fhci_usb_disable(fhci);
380
381 fhci_usb_free(fhci->usb_lld);
382 fhci->usb_lld = NULL;
383 fhci_mem_free(fhci);
384}
385
386static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
387 gfp_t mem_flags)
388{
389 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
390 u32 pipe = urb->pipe;
391 int ret;
392 int i;
393 int size = 0;
394 struct urb_priv *urb_priv;
395 unsigned long flags;
396
397 switch (usb_pipetype(pipe)) {
398 case PIPE_CONTROL:
399 /* 1 td fro setup,1 for ack */
400 size = 2;
401 case PIPE_BULK:
402 /* one td for every 4096 bytes(can be upto 8k) */
403 size += urb->transfer_buffer_length / 4096;
404 /* ...add for any remaining bytes... */
405 if ((urb->transfer_buffer_length % 4096) != 0)
406 size++;
407 /* ..and maybe a zero length packet to wrap it up */
408 if (size == 0)
409 size++;
410 else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
411 && (urb->transfer_buffer_length
412 % usb_maxpacket(urb->dev, pipe,
413 usb_pipeout(pipe))) != 0)
414 size++;
415 break;
416 case PIPE_ISOCHRONOUS:
417 size = urb->number_of_packets;
418 if (size <= 0)
419 return -EINVAL;
420 for (i = 0; i < urb->number_of_packets; i++) {
421 urb->iso_frame_desc[i].actual_length = 0;
422 urb->iso_frame_desc[i].status = (u32) (-EXDEV);
423 }
424 break;
425 case PIPE_INTERRUPT:
426 size = 1;
427 }
428
429 /* allocate the private part of the URB */
430 urb_priv = kzalloc(sizeof(*urb_priv), mem_flags);
431 if (!urb_priv)
432 return -ENOMEM;
433
434 /* allocate the private part of the URB */
435 urb_priv->tds = kzalloc(size * sizeof(struct td), mem_flags);
436 if (!urb_priv->tds) {
437 kfree(urb_priv);
438 return -ENOMEM;
439 }
440
441 spin_lock_irqsave(&fhci->lock, flags);
442
443 ret = usb_hcd_link_urb_to_ep(hcd, urb);
444 if (ret)
445 goto err;
446
447 /* fill the private part of the URB */
448 urb_priv->num_of_tds = size;
449
450 urb->status = -EINPROGRESS;
451 urb->actual_length = 0;
452 urb->error_count = 0;
453 urb->hcpriv = urb_priv;
454
455 fhci_queue_urb(fhci, urb);
456err:
457 if (ret) {
458 kfree(urb_priv->tds);
459 kfree(urb_priv);
460 }
461 spin_unlock_irqrestore(&fhci->lock, flags);
462 return ret;
463}
464
465/* dequeue FHCI URB */
466static int fhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
467{
468 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
469 struct fhci_usb *usb = fhci->usb_lld;
470 int ret = -EINVAL;
471 unsigned long flags;
472
473 if (!urb || !urb->dev || !urb->dev->bus)
474 goto out;
475
476 spin_lock_irqsave(&fhci->lock, flags);
477
478 ret = usb_hcd_check_unlink_urb(hcd, urb, status);
479 if (ret)
480 goto out2;
481
482 if (usb->port_status != FHCI_PORT_DISABLED) {
483 struct urb_priv *urb_priv;
484
485 /*
486 * flag the urb's data for deletion in some upcoming
487 * SF interrupt's delete list processing
488 */
489 urb_priv = urb->hcpriv;
490
491 if (!urb_priv || (urb_priv->state == URB_DEL))
492 goto out2;
493
494 urb_priv->state = URB_DEL;
495
496 /* already pending? */
497 urb_priv->ed->state = FHCI_ED_URB_DEL;
498 } else {
499 fhci_urb_complete_free(fhci, urb);
500 }
501
502out2:
503 spin_unlock_irqrestore(&fhci->lock, flags);
504out:
505 return ret;
506}
507
508static void fhci_endpoint_disable(struct usb_hcd *hcd,
509 struct usb_host_endpoint *ep)
510{
511 struct fhci_hcd *fhci;
512 struct ed *ed;
513 unsigned long flags;
514
515 fhci = hcd_to_fhci(hcd);
516 spin_lock_irqsave(&fhci->lock, flags);
517 ed = ep->hcpriv;
518 if (ed) {
519 while (ed->td_head != NULL) {
520 struct td *td = fhci_remove_td_from_ed(ed);
521 fhci_urb_complete_free(fhci, td->urb);
522 }
523 fhci_recycle_empty_ed(fhci, ed);
524 ep->hcpriv = NULL;
525 }
526 spin_unlock_irqrestore(&fhci->lock, flags);
527}
528
529static int fhci_get_frame_number(struct usb_hcd *hcd)
530{
531 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
532
533 return get_frame_num(fhci);
534}
535
536static const struct hc_driver fhci_driver = {
537 .description = "fsl,usb-fhci",
538 .product_desc = "FHCI HOST Controller",
539 .hcd_priv_size = sizeof(struct fhci_hcd),
540
541 /* generic hardware linkage */
542 .irq = fhci_irq,
543 .flags = HCD_USB11 | HCD_MEMORY,
544
545 /* basic lifecycle operation */
546 .start = fhci_start,
547 .stop = fhci_stop,
548
549 /* managing i/o requests and associated device resources */
550 .urb_enqueue = fhci_urb_enqueue,
551 .urb_dequeue = fhci_urb_dequeue,
552 .endpoint_disable = fhci_endpoint_disable,
553
554 /* scheduling support */
555 .get_frame_number = fhci_get_frame_number,
556
557 /* root hub support */
558 .hub_status_data = fhci_hub_status_data,
559 .hub_control = fhci_hub_control,
560};
561
562static int __devinit of_fhci_probe(struct of_device *ofdev,
563 const struct of_device_id *ofid)
564{
565 struct device *dev = &ofdev->dev;
566 struct device_node *node = ofdev->node;
567 struct usb_hcd *hcd;
568 struct fhci_hcd *fhci;
569 struct resource usb_regs;
570 unsigned long pram_addr;
571 unsigned int usb_irq;
572 const char *sprop;
573 const u32 *iprop;
574 int size;
575 int ret;
576 int i;
577 int j;
578
579 if (usb_disabled())
580 return -ENODEV;
581
582 sprop = of_get_property(node, "mode", NULL);
583 if (sprop && strcmp(sprop, "host"))
584 return -ENODEV;
585
586 hcd = usb_create_hcd(&fhci_driver, dev, dev->bus_id);
587 if (!hcd) {
588 dev_err(dev, "could not create hcd\n");
589 return -ENOMEM;
590 }
591
592 fhci = hcd_to_fhci(hcd);
593 hcd->self.controller = dev;
594 dev_set_drvdata(dev, hcd);
595
596 iprop = of_get_property(node, "hub-power-budget", &size);
597 if (iprop && size == sizeof(*iprop))
598 hcd->power_budget = *iprop;
599
600 /* FHCI registers. */
601 ret = of_address_to_resource(node, 0, &usb_regs);
602 if (ret) {
603 dev_err(dev, "could not get regs\n");
604 goto err_regs;
605 }
606
607 hcd->regs = ioremap(usb_regs.start, usb_regs.end - usb_regs.start + 1);
608 if (!hcd->regs) {
609 dev_err(dev, "could not ioremap regs\n");
610 ret = -ENOMEM;
611 goto err_regs;
612 }
613 fhci->regs = hcd->regs;
614
615 /* Parameter RAM. */
616 iprop = of_get_property(node, "reg", &size);
617 if (!iprop || size < sizeof(*iprop) * 4) {
618 dev_err(dev, "can't get pram offset\n");
619 ret = -EINVAL;
620 goto err_pram;
621 }
622
623 pram_addr = cpm_muram_alloc_fixed(iprop[2], FHCI_PRAM_SIZE);
624 if (IS_ERR_VALUE(pram_addr)) {
625 dev_err(dev, "failed to allocate usb pram\n");
626 ret = -ENOMEM;
627 goto err_pram;
628 }
629 fhci->pram = cpm_muram_addr(pram_addr);
630
631 /* GPIOs and pins */
632 for (i = 0; i < NUM_GPIOS; i++) {
633 int gpio;
634 enum of_gpio_flags flags;
635
636 gpio = of_get_gpio_flags(node, i, &flags);
637 fhci->gpios[i] = gpio;
638 fhci->alow_gpios[i] = flags & OF_GPIO_ACTIVE_LOW;
639
640 if (!gpio_is_valid(gpio)) {
641 if (i < GPIO_SPEED) {
642 dev_err(dev, "incorrect GPIO%d: %d\n",
643 i, gpio);
644 goto err_gpios;
645 } else {
646 dev_info(dev, "assuming board doesn't have "
647 "%s gpio\n", i == GPIO_SPEED ?
648 "speed" : "power");
649 continue;
650 }
651 }
652
653 ret = gpio_request(gpio, dev->bus_id);
654 if (ret) {
655 dev_err(dev, "failed to request gpio %d", i);
656 goto err_gpios;
657 }
658
659 if (i >= GPIO_SPEED) {
660 ret = gpio_direction_output(gpio, 0);
661 if (ret) {
662 dev_err(dev, "failed to set gpio %d as "
663 "an output\n", i);
664 i++;
665 goto err_gpios;
666 }
667 }
668 }
669
670 for (j = 0; j < NUM_PINS; j++) {
671 fhci->pins[j] = qe_pin_request(ofdev->node, j);
672 if (IS_ERR(fhci->pins[j])) {
673 ret = PTR_ERR(fhci->pins[j]);
674 dev_err(dev, "can't get pin %d: %d\n", j, ret);
675 goto err_pins;
676 }
677 }
678
679 /* Frame limit timer and its interrupt. */
680 fhci->timer = gtm_get_timer16();
681 if (IS_ERR(fhci->timer)) {
682 ret = PTR_ERR(fhci->timer);
683 dev_err(dev, "failed to request qe timer: %i", ret);
684 goto err_get_timer;
685 }
686
687 ret = request_irq(fhci->timer->irq, fhci_frame_limit_timer_irq,
688 IRQF_DISABLED, "qe timer (usb)", hcd);
689 if (ret) {
690 dev_err(dev, "failed to request timer irq");
691 goto err_timer_irq;
692 }
693
694 /* USB Host interrupt. */
695 usb_irq = irq_of_parse_and_map(node, 0);
696 if (usb_irq == NO_IRQ) {
697 dev_err(dev, "could not get usb irq\n");
698 ret = -EINVAL;
699 goto err_usb_irq;
700 }
701
702 /* Clocks. */
703 sprop = of_get_property(node, "fsl,fullspeed-clock", NULL);
704 if (sprop) {
705 fhci->fullspeed_clk = qe_clock_source(sprop);
706 if (fhci->fullspeed_clk == QE_CLK_DUMMY) {
707 dev_err(dev, "wrong fullspeed-clock\n");
708 ret = -EINVAL;
709 goto err_clocks;
710 }
711 }
712
713 sprop = of_get_property(node, "fsl,lowspeed-clock", NULL);
714 if (sprop) {
715 fhci->lowspeed_clk = qe_clock_source(sprop);
716 if (fhci->lowspeed_clk == QE_CLK_DUMMY) {
717 dev_err(dev, "wrong lowspeed-clock\n");
718 ret = -EINVAL;
719 goto err_clocks;
720 }
721 }
722
723 if (fhci->fullspeed_clk == QE_CLK_NONE &&
724 fhci->lowspeed_clk == QE_CLK_NONE) {
725 dev_err(dev, "no clocks specified\n");
726 ret = -EINVAL;
727 goto err_clocks;
728 }
729
730 dev_info(dev, "at 0x%p, irq %d\n", hcd->regs, usb_irq);
731
732 fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
733
734 /* Start with full-speed, if possible. */
735 if (fhci->fullspeed_clk != QE_CLK_NONE) {
736 fhci_config_transceiver(fhci, FHCI_PORT_FULL);
737 qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK);
738 } else {
739 fhci_config_transceiver(fhci, FHCI_PORT_LOW);
740 qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3);
741 }
742
743 /* Clear and disable any pending interrupts. */
744 out_be16(&fhci->regs->usb_event, 0xffff);
745 out_be16(&fhci->regs->usb_mask, 0);
746
747 ret = usb_add_hcd(hcd, usb_irq, IRQF_DISABLED);
748 if (ret < 0)
749 goto err_add_hcd;
750
751 fhci_dfs_create(fhci);
752
753 return 0;
754
755err_add_hcd:
756err_clocks:
757 irq_dispose_mapping(usb_irq);
758err_usb_irq:
759 free_irq(fhci->timer->irq, hcd);
760err_timer_irq:
761 gtm_put_timer16(fhci->timer);
762err_get_timer:
763err_pins:
764 while (--j >= 0)
765 qe_pin_free(fhci->pins[j]);
766err_gpios:
767 while (--i >= 0) {
768 if (gpio_is_valid(fhci->gpios[i]))
769 gpio_free(fhci->gpios[i]);
770 }
771 cpm_muram_free(pram_addr);
772err_pram:
773 iounmap(hcd->regs);
774err_regs:
775 usb_put_hcd(hcd);
776 return ret;
777}
778
779static int __devexit fhci_remove(struct device *dev)
780{
781 struct usb_hcd *hcd = dev_get_drvdata(dev);
782 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
783 int i;
784 int j;
785
786 usb_remove_hcd(hcd);
787 free_irq(fhci->timer->irq, hcd);
788 gtm_put_timer16(fhci->timer);
789 cpm_muram_free(cpm_muram_offset(fhci->pram));
790 for (i = 0; i < NUM_GPIOS; i++) {
791 if (!gpio_is_valid(fhci->gpios[i]))
792 continue;
793 gpio_free(fhci->gpios[i]);
794 }
795 for (j = 0; j < NUM_PINS; j++)
796 qe_pin_free(fhci->pins[j]);
797 fhci_dfs_destroy(fhci);
798 usb_put_hcd(hcd);
799 return 0;
800}
801
802static int __devexit of_fhci_remove(struct of_device *ofdev)
803{
804 return fhci_remove(&ofdev->dev);
805}
806
807static struct of_device_id of_fhci_match[] = {
808 { .compatible = "fsl,mpc8323-qe-usb", },
809 {},
810};
811MODULE_DEVICE_TABLE(of, of_fhci_match);
812
813static struct of_platform_driver of_fhci_driver = {
814 .name = "fsl,usb-fhci",
815 .match_table = of_fhci_match,
816 .probe = of_fhci_probe,
817 .remove = __devexit_p(of_fhci_remove),
818};
819
820static int __init fhci_module_init(void)
821{
822 return of_register_platform_driver(&of_fhci_driver);
823}
824module_init(fhci_module_init);
825
826static void __exit fhci_module_exit(void)
827{
828 of_unregister_platform_driver(&of_fhci_driver);
829}
830module_exit(fhci_module_exit);
831
832MODULE_DESCRIPTION("USB Freescale Host Controller Interface Driver");
833MODULE_AUTHOR("Shlomi Gridish <gridish@freescale.com>, "
834 "Jerry Huang <Chang-Ming.Huang@freescale.com>, "
835 "Anton Vorontsov <avorontsov@ru.mvista.com>");
836MODULE_LICENSE("GPL");
diff --git a/drivers/usb/host/fhci-hub.c b/drivers/usb/host/fhci-hub.c
new file mode 100644
index 000000000000..0cfaedc3e124
--- /dev/null
+++ b/drivers/usb/host/fhci-hub.c
@@ -0,0 +1,345 @@
1/*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18#include <linux/kernel.h>
19#include <linux/types.h>
20#include <linux/spinlock.h>
21#include <linux/delay.h>
22#include <linux/errno.h>
23#include <linux/io.h>
24#include <linux/usb.h>
25#include <linux/gpio.h>
26#include <asm/qe.h>
27#include "../core/hcd.h"
28#include "fhci.h"
29
30/* virtual root hub specific descriptor */
31static u8 root_hub_des[] = {
32 0x09, /* blength */
33 0x29, /* bDescriptorType;hub-descriptor */
34 0x01, /* bNbrPorts */
35 0x00, /* wHubCharacteristics */
36 0x00,
37 0x01, /* bPwrOn2pwrGood;2ms */
38 0x00, /* bHubContrCurrent;0mA */
39 0x00, /* DeviceRemoveable */
40 0xff, /* PortPwrCtrlMask */
41};
42
43static void fhci_gpio_set_value(struct fhci_hcd *fhci, int gpio_nr, bool on)
44{
45 int gpio = fhci->gpios[gpio_nr];
46 bool alow = fhci->alow_gpios[gpio_nr];
47
48 if (!gpio_is_valid(gpio))
49 return;
50
51 gpio_set_value(gpio, on ^ alow);
52 mdelay(5);
53}
54
55void fhci_config_transceiver(struct fhci_hcd *fhci,
56 enum fhci_port_status status)
57{
58 fhci_dbg(fhci, "-> %s: %d\n", __func__, status);
59
60 switch (status) {
61 case FHCI_PORT_POWER_OFF:
62 fhci_gpio_set_value(fhci, GPIO_POWER, false);
63 break;
64 case FHCI_PORT_DISABLED:
65 case FHCI_PORT_WAITING:
66 fhci_gpio_set_value(fhci, GPIO_POWER, true);
67 break;
68 case FHCI_PORT_LOW:
69 fhci_gpio_set_value(fhci, GPIO_SPEED, false);
70 break;
71 case FHCI_PORT_FULL:
72 fhci_gpio_set_value(fhci, GPIO_SPEED, true);
73 break;
74 default:
75 WARN_ON(1);
76 break;
77 }
78
79 fhci_dbg(fhci, "<- %s: %d\n", __func__, status);
80}
81
82/* disable the USB port by clearing the EN bit in the USBMOD register */
83void fhci_port_disable(struct fhci_hcd *fhci)
84{
85 struct fhci_usb *usb = (struct fhci_usb *)fhci->usb_lld;
86 enum fhci_port_status port_status;
87
88 fhci_dbg(fhci, "-> %s\n", __func__);
89
90 fhci_stop_sof_timer(fhci);
91
92 fhci_flush_all_transmissions(usb);
93
94 fhci_usb_disable_interrupt((struct fhci_usb *)fhci->usb_lld);
95 port_status = usb->port_status;
96 usb->port_status = FHCI_PORT_DISABLED;
97
98 /* Enable IDLE since we want to know if something comes along */
99 usb->saved_msk |= USB_E_IDLE_MASK;
100 out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
101
102 /* check if during the disconnection process attached new device */
103 if (port_status == FHCI_PORT_WAITING)
104 fhci_device_connected_interrupt(fhci);
105 usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_ENABLE;
106 usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_ENABLE;
107 fhci_usb_enable_interrupt((struct fhci_usb *)fhci->usb_lld);
108
109 fhci_dbg(fhci, "<- %s\n", __func__);
110}
111
112/* enable the USB port by setting the EN bit in the USBMOD register */
113void fhci_port_enable(void *lld)
114{
115 struct fhci_usb *usb = (struct fhci_usb *)lld;
116 struct fhci_hcd *fhci = usb->fhci;
117
118 fhci_dbg(fhci, "-> %s\n", __func__);
119
120 fhci_config_transceiver(fhci, usb->port_status);
121
122 if ((usb->port_status != FHCI_PORT_FULL) &&
123 (usb->port_status != FHCI_PORT_LOW))
124 fhci_start_sof_timer(fhci);
125
126 usb->vroot_hub->port.wPortStatus |= USB_PORT_STAT_ENABLE;
127 usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_ENABLE;
128
129 fhci_dbg(fhci, "<- %s\n", __func__);
130}
131
132void fhci_io_port_generate_reset(struct fhci_hcd *fhci)
133{
134 fhci_dbg(fhci, "-> %s\n", __func__);
135
136 gpio_direction_output(fhci->gpios[GPIO_USBOE], 0);
137 gpio_direction_output(fhci->gpios[GPIO_USBTP], 0);
138 gpio_direction_output(fhci->gpios[GPIO_USBTN], 0);
139
140 mdelay(5);
141
142 qe_pin_set_dedicated(fhci->pins[PIN_USBOE]);
143 qe_pin_set_dedicated(fhci->pins[PIN_USBTP]);
144 qe_pin_set_dedicated(fhci->pins[PIN_USBTN]);
145
146 fhci_dbg(fhci, "<- %s\n", __func__);
147}
148
149/* generate the RESET condition on the bus */
150void fhci_port_reset(void *lld)
151{
152 struct fhci_usb *usb = (struct fhci_usb *)lld;
153 struct fhci_hcd *fhci = usb->fhci;
154 u8 mode;
155 u16 mask;
156
157 fhci_dbg(fhci, "-> %s\n", __func__);
158
159 fhci_stop_sof_timer(fhci);
160 /* disable the USB controller */
161 mode = in_8(&fhci->regs->usb_mod);
162 out_8(&fhci->regs->usb_mod, mode & (~USB_MODE_EN));
163
164 /* disable idle interrupts */
165 mask = in_be16(&fhci->regs->usb_mask);
166 out_be16(&fhci->regs->usb_mask, mask & (~USB_E_IDLE_MASK));
167
168 fhci_io_port_generate_reset(fhci);
169
170 /* enable interrupt on this endpoint */
171 out_be16(&fhci->regs->usb_mask, mask);
172
173 /* enable the USB controller */
174 mode = in_8(&fhci->regs->usb_mod);
175 out_8(&fhci->regs->usb_mod, mode | USB_MODE_EN);
176 fhci_start_sof_timer(fhci);
177
178 fhci_dbg(fhci, "<- %s\n", __func__);
179}
180
181int fhci_hub_status_data(struct usb_hcd *hcd, char *buf)
182{
183 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
184 int ret = 0;
185 unsigned long flags;
186
187 fhci_dbg(fhci, "-> %s\n", __func__);
188
189 spin_lock_irqsave(&fhci->lock, flags);
190
191 if (fhci->vroot_hub->port.wPortChange & (USB_PORT_STAT_C_CONNECTION |
192 USB_PORT_STAT_C_ENABLE | USB_PORT_STAT_C_SUSPEND |
193 USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_OVERCURRENT)) {
194 *buf = 1 << 1;
195 ret = 1;
196 fhci_dbg(fhci, "-- %s\n", __func__);
197 }
198
199 spin_unlock_irqrestore(&fhci->lock, flags);
200
201 fhci_dbg(fhci, "<- %s\n", __func__);
202
203 return ret;
204}
205
206int fhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
207 u16 wIndex, char *buf, u16 wLength)
208{
209 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
210 int retval = 0;
211 int len = 0;
212 struct usb_hub_status *hub_status;
213 struct usb_port_status *port_status;
214 unsigned long flags;
215
216 spin_lock_irqsave(&fhci->lock, flags);
217
218 fhci_dbg(fhci, "-> %s\n", __func__);
219
220 switch (typeReq) {
221 case ClearHubFeature:
222 switch (wValue) {
223 case C_HUB_LOCAL_POWER:
224 case C_HUB_OVER_CURRENT:
225 break;
226 default:
227 goto error;
228 }
229 break;
230 case ClearPortFeature:
231 fhci->vroot_hub->feature &= (1 << wValue);
232
233 switch (wValue) {
234 case USB_PORT_FEAT_ENABLE:
235 fhci->vroot_hub->port.wPortStatus &=
236 ~USB_PORT_STAT_ENABLE;
237 fhci_port_disable(fhci);
238 break;
239 case USB_PORT_FEAT_C_ENABLE:
240 fhci->vroot_hub->port.wPortChange &=
241 ~USB_PORT_STAT_C_ENABLE;
242 break;
243 case USB_PORT_FEAT_SUSPEND:
244 fhci->vroot_hub->port.wPortStatus &=
245 ~USB_PORT_STAT_SUSPEND;
246 fhci_stop_sof_timer(fhci);
247 break;
248 case USB_PORT_FEAT_C_SUSPEND:
249 fhci->vroot_hub->port.wPortChange &=
250 ~USB_PORT_STAT_C_SUSPEND;
251 break;
252 case USB_PORT_FEAT_POWER:
253 fhci->vroot_hub->port.wPortStatus &=
254 ~USB_PORT_STAT_POWER;
255 fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
256 break;
257 case USB_PORT_FEAT_C_CONNECTION:
258 fhci->vroot_hub->port.wPortChange &=
259 ~USB_PORT_STAT_C_CONNECTION;
260 break;
261 case USB_PORT_FEAT_C_OVER_CURRENT:
262 fhci->vroot_hub->port.wPortChange &=
263 ~USB_PORT_STAT_C_OVERCURRENT;
264 break;
265 case USB_PORT_FEAT_C_RESET:
266 fhci->vroot_hub->port.wPortChange &=
267 ~USB_PORT_STAT_C_RESET;
268 break;
269 default:
270 goto error;
271 }
272 break;
273 case GetHubDescriptor:
274 memcpy(buf, root_hub_des, sizeof(root_hub_des));
275 buf[3] = 0x11; /* per-port power, no ovrcrnt */
276 len = (buf[0] < wLength) ? buf[0] : wLength;
277 break;
278 case GetHubStatus:
279 hub_status = (struct usb_hub_status *)buf;
280 hub_status->wHubStatus =
281 cpu_to_le16(fhci->vroot_hub->hub.wHubStatus);
282 hub_status->wHubChange =
283 cpu_to_le16(fhci->vroot_hub->hub.wHubChange);
284 len = 4;
285 break;
286 case GetPortStatus:
287 port_status = (struct usb_port_status *)buf;
288 port_status->wPortStatus =
289 cpu_to_le16(fhci->vroot_hub->port.wPortStatus);
290 port_status->wPortChange =
291 cpu_to_le16(fhci->vroot_hub->port.wPortChange);
292 len = 4;
293 break;
294 case SetHubFeature:
295 switch (wValue) {
296 case C_HUB_OVER_CURRENT:
297 case C_HUB_LOCAL_POWER:
298 break;
299 default:
300 goto error;
301 }
302 break;
303 case SetPortFeature:
304 fhci->vroot_hub->feature |= (1 << wValue);
305
306 switch (wValue) {
307 case USB_PORT_FEAT_ENABLE:
308 fhci->vroot_hub->port.wPortStatus |=
309 USB_PORT_STAT_ENABLE;
310 fhci_port_enable(fhci->usb_lld);
311 break;
312 case USB_PORT_FEAT_SUSPEND:
313 fhci->vroot_hub->port.wPortStatus |=
314 USB_PORT_STAT_SUSPEND;
315 fhci_stop_sof_timer(fhci);
316 break;
317 case USB_PORT_FEAT_RESET:
318 fhci->vroot_hub->port.wPortStatus |=
319 USB_PORT_STAT_RESET;
320 fhci_port_reset(fhci->usb_lld);
321 fhci->vroot_hub->port.wPortStatus |=
322 USB_PORT_STAT_ENABLE;
323 fhci->vroot_hub->port.wPortStatus &=
324 ~USB_PORT_STAT_RESET;
325 break;
326 case USB_PORT_FEAT_POWER:
327 fhci->vroot_hub->port.wPortStatus |=
328 USB_PORT_STAT_POWER;
329 fhci_config_transceiver(fhci, FHCI_PORT_WAITING);
330 break;
331 default:
332 goto error;
333 }
334 break;
335 default:
336error:
337 retval = -EPIPE;
338 }
339
340 fhci_dbg(fhci, "<- %s\n", __func__);
341
342 spin_unlock_irqrestore(&fhci->lock, flags);
343
344 return retval;
345}
diff --git a/drivers/usb/host/fhci-mem.c b/drivers/usb/host/fhci-mem.c
new file mode 100644
index 000000000000..2c0736c99712
--- /dev/null
+++ b/drivers/usb/host/fhci-mem.c
@@ -0,0 +1,113 @@
1/*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18#include <linux/kernel.h>
19#include <linux/types.h>
20#include <linux/delay.h>
21#include <linux/list.h>
22#include <linux/usb.h>
23#include "../core/hcd.h"
24#include "fhci.h"
25
26static void init_td(struct td *td)
27{
28 memset(td, 0, sizeof(*td));
29 INIT_LIST_HEAD(&td->node);
30 INIT_LIST_HEAD(&td->frame_lh);
31}
32
33static void init_ed(struct ed *ed)
34{
35 memset(ed, 0, sizeof(*ed));
36 INIT_LIST_HEAD(&ed->td_list);
37 INIT_LIST_HEAD(&ed->node);
38}
39
40static struct td *get_empty_td(struct fhci_hcd *fhci)
41{
42 struct td *td;
43
44 if (!list_empty(&fhci->empty_tds)) {
45 td = list_entry(fhci->empty_tds.next, struct td, node);
46 list_del(fhci->empty_tds.next);
47 } else {
48 td = kmalloc(sizeof(*td), GFP_ATOMIC);
49 if (!td)
50 fhci_err(fhci, "No memory to allocate to TD\n");
51 else
52 init_td(td);
53 }
54
55 return td;
56}
57
58void fhci_recycle_empty_td(struct fhci_hcd *fhci, struct td *td)
59{
60 init_td(td);
61 list_add(&td->node, &fhci->empty_tds);
62}
63
64struct ed *fhci_get_empty_ed(struct fhci_hcd *fhci)
65{
66 struct ed *ed;
67
68 if (!list_empty(&fhci->empty_eds)) {
69 ed = list_entry(fhci->empty_eds.next, struct ed, node);
70 list_del(fhci->empty_eds.next);
71 } else {
72 ed = kmalloc(sizeof(*ed), GFP_ATOMIC);
73 if (!ed)
74 fhci_err(fhci, "No memory to allocate to ED\n");
75 else
76 init_ed(ed);
77 }
78
79 return ed;
80}
81
82void fhci_recycle_empty_ed(struct fhci_hcd *fhci, struct ed *ed)
83{
84 init_ed(ed);
85 list_add(&ed->node, &fhci->empty_eds);
86}
87
88struct td *fhci_td_fill(struct fhci_hcd *fhci, struct urb *urb,
89 struct urb_priv *urb_priv, struct ed *ed, u16 index,
90 enum fhci_ta_type type, int toggle, u8 *data, u32 len,
91 u16 interval, u16 start_frame, bool ioc)
92{
93 struct td *td = get_empty_td(fhci);
94
95 if (!td)
96 return NULL;
97
98 td->urb = urb;
99 td->ed = ed;
100 td->type = type;
101 td->toggle = toggle;
102 td->data = data;
103 td->len = len;
104 td->iso_index = index;
105 td->interval = interval;
106 td->start_frame = start_frame;
107 td->ioc = ioc;
108 td->status = USB_TD_OK;
109
110 urb_priv->tds[index] = td;
111
112 return td;
113}
diff --git a/drivers/usb/host/fhci-q.c b/drivers/usb/host/fhci-q.c
new file mode 100644
index 000000000000..b0a1446ba292
--- /dev/null
+++ b/drivers/usb/host/fhci-q.c
@@ -0,0 +1,284 @@
1/*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18#include <linux/kernel.h>
19#include <linux/types.h>
20#include <linux/spinlock.h>
21#include <linux/errno.h>
22#include <linux/list.h>
23#include <linux/usb.h>
24#include "../core/hcd.h"
25#include "fhci.h"
26
27/* maps the hardware error code to the USB error code */
28static int status_to_error(u32 status)
29{
30 if (status == USB_TD_OK)
31 return 0;
32 else if (status & USB_TD_RX_ER_CRC)
33 return -EILSEQ;
34 else if (status & USB_TD_RX_ER_NONOCT)
35 return -EPROTO;
36 else if (status & USB_TD_RX_ER_OVERUN)
37 return -ECOMM;
38 else if (status & USB_TD_RX_ER_BITSTUFF)
39 return -EPROTO;
40 else if (status & USB_TD_RX_ER_PID)
41 return -EILSEQ;
42 else if (status & (USB_TD_TX_ER_NAK | USB_TD_TX_ER_TIMEOUT))
43 return -ETIMEDOUT;
44 else if (status & USB_TD_TX_ER_STALL)
45 return -EPIPE;
46 else if (status & USB_TD_TX_ER_UNDERUN)
47 return -ENOSR;
48 else if (status & USB_TD_RX_DATA_UNDERUN)
49 return -EREMOTEIO;
50 else if (status & USB_TD_RX_DATA_OVERUN)
51 return -EOVERFLOW;
52 else
53 return -EINVAL;
54}
55
56void fhci_add_td_to_frame(struct fhci_time_frame *frame, struct td *td)
57{
58 list_add_tail(&td->frame_lh, &frame->tds_list);
59}
60
61void fhci_add_tds_to_ed(struct ed *ed, struct td **td_list, int number)
62{
63 int i;
64
65 for (i = 0; i < number; i++) {
66 struct td *td = td_list[i];
67 list_add_tail(&td->node, &ed->td_list);
68 }
69 if (ed->td_head == NULL)
70 ed->td_head = td_list[0];
71}
72
73static struct td *peek_td_from_ed(struct ed *ed)
74{
75 struct td *td;
76
77 if (!list_empty(&ed->td_list))
78 td = list_entry(ed->td_list.next, struct td, node);
79 else
80 td = NULL;
81
82 return td;
83}
84
85struct td *fhci_remove_td_from_frame(struct fhci_time_frame *frame)
86{
87 struct td *td;
88
89 if (!list_empty(&frame->tds_list)) {
90 td = list_entry(frame->tds_list.next, struct td, frame_lh);
91 list_del_init(frame->tds_list.next);
92 } else
93 td = NULL;
94
95 return td;
96}
97
98struct td *fhci_peek_td_from_frame(struct fhci_time_frame *frame)
99{
100 struct td *td;
101
102 if (!list_empty(&frame->tds_list))
103 td = list_entry(frame->tds_list.next, struct td, frame_lh);
104 else
105 td = NULL;
106
107 return td;
108}
109
110struct td *fhci_remove_td_from_ed(struct ed *ed)
111{
112 struct td *td;
113
114 if (!list_empty(&ed->td_list)) {
115 td = list_entry(ed->td_list.next, struct td, node);
116 list_del_init(ed->td_list.next);
117
118 /* if this TD was the ED's head, find next TD */
119 if (!list_empty(&ed->td_list))
120 ed->td_head = list_entry(ed->td_list.next, struct td,
121 node);
122 else
123 ed->td_head = NULL;
124 } else
125 td = NULL;
126
127 return td;
128}
129
130struct td *fhci_remove_td_from_done_list(struct fhci_controller_list *p_list)
131{
132 struct td *td;
133
134 if (!list_empty(&p_list->done_list)) {
135 td = list_entry(p_list->done_list.next, struct td, node);
136 list_del_init(p_list->done_list.next);
137 } else
138 td = NULL;
139
140 return td;
141}
142
143void fhci_move_td_from_ed_to_done_list(struct fhci_usb *usb, struct ed *ed)
144{
145 struct td *td;
146
147 td = ed->td_head;
148 list_del_init(&td->node);
149
150 /* If this TD was the ED's head,find next TD */
151 if (!list_empty(&ed->td_list))
152 ed->td_head = list_entry(ed->td_list.next, struct td, node);
153 else {
154 ed->td_head = NULL;
155 ed->state = FHCI_ED_SKIP;
156 }
157 ed->toggle_carry = td->toggle;
158 list_add_tail(&td->node, &usb->hc_list->done_list);
159 if (td->ioc)
160 usb->transfer_confirm(usb->fhci);
161}
162
163/* free done FHCI URB resource such as ED and TD */
164static void free_urb_priv(struct fhci_hcd *fhci, struct urb *urb)
165{
166 int i;
167 struct urb_priv *urb_priv = urb->hcpriv;
168 struct ed *ed = urb_priv->ed;
169
170 for (i = 0; i < urb_priv->num_of_tds; i++) {
171 list_del_init(&urb_priv->tds[i]->node);
172 fhci_recycle_empty_td(fhci, urb_priv->tds[i]);
173 }
174
175 /* if this TD was the ED's head,find the next TD */
176 if (!list_empty(&ed->td_list))
177 ed->td_head = list_entry(ed->td_list.next, struct td, node);
178 else
179 ed->td_head = NULL;
180
181 kfree(urb_priv->tds);
182 kfree(urb_priv);
183 urb->hcpriv = NULL;
184
185 /* if this TD was the ED's head,find next TD */
186 if (ed->td_head == NULL)
187 list_del_init(&ed->node);
188 fhci->active_urbs--;
189}
190
191/* this routine called to complete and free done URB */
192void fhci_urb_complete_free(struct fhci_hcd *fhci, struct urb *urb)
193{
194 free_urb_priv(fhci, urb);
195
196 if (urb->status == -EINPROGRESS) {
197 if (urb->actual_length != urb->transfer_buffer_length &&
198 urb->transfer_flags & URB_SHORT_NOT_OK)
199 urb->status = -EREMOTEIO;
200 else
201 urb->status = 0;
202 }
203
204 usb_hcd_unlink_urb_from_ep(fhci_to_hcd(fhci), urb);
205
206 spin_unlock(&fhci->lock);
207
208 usb_hcd_giveback_urb(fhci_to_hcd(fhci), urb, urb->status);
209
210 spin_lock(&fhci->lock);
211}
212
213/*
214 * caculate transfer length/stats and update the urb
215 * Precondition: irqsafe(only for urb-?status locking)
216 */
217void fhci_done_td(struct urb *urb, struct td *td)
218{
219 struct ed *ed = td->ed;
220 u32 cc = td->status;
221
222 /* ISO...drivers see per-TD length/status */
223 if (ed->mode == FHCI_TF_ISO) {
224 u32 len;
225 if (!(urb->transfer_flags & URB_SHORT_NOT_OK &&
226 cc == USB_TD_RX_DATA_UNDERUN))
227 cc = USB_TD_OK;
228
229 if (usb_pipeout(urb->pipe))
230 len = urb->iso_frame_desc[td->iso_index].length;
231 else
232 len = td->actual_len;
233
234 urb->actual_length += len;
235 urb->iso_frame_desc[td->iso_index].actual_length = len;
236 urb->iso_frame_desc[td->iso_index].status =
237 status_to_error(cc);
238 }
239
240 /* BULK,INT,CONTROL... drivers see aggregate length/status,
241 * except that "setup" bytes aren't counted and "short" transfers
242 * might not be reported as errors.
243 */
244 else {
245 if (td->error_cnt >= 3)
246 urb->error_count = 3;
247
248 /* control endpoint only have soft stalls */
249
250 /* update packet status if needed(short may be ok) */
251 if (!(urb->transfer_flags & URB_SHORT_NOT_OK) &&
252 cc == USB_TD_RX_DATA_UNDERUN) {
253 ed->state = FHCI_ED_OPER;
254 cc = USB_TD_OK;
255 }
256 if (cc != USB_TD_OK) {
257 if (urb->status == -EINPROGRESS)
258 urb->status = status_to_error(cc);
259 }
260
261 /* count all non-empty packets except control SETUP packet */
262 if (td->type != FHCI_TA_SETUP || td->iso_index != 0)
263 urb->actual_length += td->actual_len;
264 }
265}
266
267/* there are some pedning request to unlink */
268void fhci_del_ed_list(struct fhci_hcd *fhci, struct ed *ed)
269{
270 struct td *td = peek_td_from_ed(ed);
271 struct urb *urb = td->urb;
272 struct urb_priv *urb_priv = urb->hcpriv;
273
274 if (urb_priv->state == URB_DEL) {
275 td = fhci_remove_td_from_ed(ed);
276 /* HC may have partly processed this TD */
277 if (td->status != USB_TD_INPROGRESS)
278 fhci_done_td(urb, td);
279
280 /* URB is done;clean up */
281 if (++(urb_priv->tds_cnt) == urb_priv->num_of_tds)
282 fhci_urb_complete_free(fhci, urb);
283 }
284}
diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c
new file mode 100644
index 000000000000..bb63b68ddb77
--- /dev/null
+++ b/drivers/usb/host/fhci-sched.c
@@ -0,0 +1,888 @@
1/*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18#include <linux/kernel.h>
19#include <linux/types.h>
20#include <linux/spinlock.h>
21#include <linux/delay.h>
22#include <linux/errno.h>
23#include <linux/list.h>
24#include <linux/interrupt.h>
25#include <linux/io.h>
26#include <linux/usb.h>
27#include <asm/qe.h>
28#include <asm/fsl_gtm.h>
29#include "../core/hcd.h"
30#include "fhci.h"
31
32static void recycle_frame(struct fhci_usb *usb, struct packet *pkt)
33{
34 pkt->data = NULL;
35 pkt->len = 0;
36 pkt->status = USB_TD_OK;
37 pkt->info = 0;
38 pkt->priv_data = NULL;
39
40 cq_put(usb->ep0->empty_frame_Q, pkt);
41}
42
43/* confirm submitted packet */
44void fhci_transaction_confirm(struct fhci_usb *usb, struct packet *pkt)
45{
46 struct td *td;
47 struct packet *td_pkt;
48 struct ed *ed;
49 u32 trans_len;
50 bool td_done = false;
51
52 td = fhci_remove_td_from_frame(usb->actual_frame);
53 td_pkt = td->pkt;
54 trans_len = pkt->len;
55 td->status = pkt->status;
56 if (td->type == FHCI_TA_IN && td_pkt->info & PKT_DUMMY_PACKET) {
57 if ((td->data + td->actual_len) && trans_len)
58 memcpy(td->data + td->actual_len, pkt->data,
59 trans_len);
60 cq_put(usb->ep0->dummy_packets_Q, pkt->data);
61 }
62
63 recycle_frame(usb, pkt);
64
65 ed = td->ed;
66 if (ed->mode == FHCI_TF_ISO) {
67 if (ed->td_list.next->next != &ed->td_list) {
68 struct td *td_next =
69 list_entry(ed->td_list.next->next, struct td,
70 node);
71
72 td_next->start_frame = usb->actual_frame->frame_num;
73 }
74 td->actual_len = trans_len;
75 td_done = true;
76 } else if ((td->status & USB_TD_ERROR) &&
77 !(td->status & USB_TD_TX_ER_NAK)) {
78 /*
79 * There was an error on the transaction (but not NAK).
80 * If it is fatal error (data underrun, stall, bad pid or 3
81 * errors exceeded), mark this TD as done.
82 */
83 if ((td->status & USB_TD_RX_DATA_UNDERUN) ||
84 (td->status & USB_TD_TX_ER_STALL) ||
85 (td->status & USB_TD_RX_ER_PID) ||
86 (++td->error_cnt >= 3)) {
87 ed->state = FHCI_ED_HALTED;
88 td_done = true;
89
90 if (td->status & USB_TD_RX_DATA_UNDERUN) {
91 fhci_dbg(usb->fhci, "td err fu\n");
92 td->toggle = !td->toggle;
93 td->actual_len += trans_len;
94 } else {
95 fhci_dbg(usb->fhci, "td err f!u\n");
96 }
97 } else {
98 fhci_dbg(usb->fhci, "td err !f\n");
99 /* it is not a fatal error -retry this transaction */
100 td->nak_cnt = 0;
101 td->error_cnt++;
102 td->status = USB_TD_OK;
103 }
104 } else if (td->status & USB_TD_TX_ER_NAK) {
105 /* there was a NAK response */
106 fhci_vdbg(usb->fhci, "td nack\n");
107 td->nak_cnt++;
108 td->error_cnt = 0;
109 td->status = USB_TD_OK;
110 } else {
111 /* there was no error on transaction */
112 td->error_cnt = 0;
113 td->nak_cnt = 0;
114 td->toggle = !td->toggle;
115 td->actual_len += trans_len;
116
117 if (td->len == td->actual_len)
118 td_done = true;
119 }
120
121 if (td_done)
122 fhci_move_td_from_ed_to_done_list(usb, ed);
123}
124
125/*
126 * Flush all transmitted packets from BDs
127 * This routine is called when disabling the USB port to flush all
128 * transmissions that are allready scheduled in the BDs
129 */
130void fhci_flush_all_transmissions(struct fhci_usb *usb)
131{
132 u8 mode;
133 struct td *td;
134
135 mode = in_8(&usb->fhci->regs->usb_mod);
136 clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN);
137
138 fhci_flush_bds(usb);
139
140 while ((td = fhci_peek_td_from_frame(usb->actual_frame)) != NULL) {
141 struct packet *pkt = td->pkt;
142
143 pkt->status = USB_TD_TX_ER_TIMEOUT;
144 fhci_transaction_confirm(usb, pkt);
145 }
146
147 usb->actual_frame->frame_status = FRAME_END_TRANSMISSION;
148
149 /* reset the event register */
150 out_be16(&usb->fhci->regs->usb_event, 0xffff);
151 /* enable the USB controller */
152 out_8(&usb->fhci->regs->usb_mod, mode | USB_MODE_EN);
153}
154
155/*
156 * This function forms the packet and transmit the packet. This function
157 * will handle all endpoint type:ISO,interrupt,control and bulk
158 */
159static int add_packet(struct fhci_usb *usb, struct ed *ed, struct td *td)
160{
161 u32 fw_transaction_time, len = 0;
162 struct packet *pkt;
163 u8 *data = NULL;
164
165 /* calcalate data address,len and toggle and then add the transaction */
166 if (td->toggle == USB_TD_TOGGLE_CARRY)
167 td->toggle = ed->toggle_carry;
168
169 switch (ed->mode) {
170 case FHCI_TF_ISO:
171 len = td->len;
172 if (td->type != FHCI_TA_IN)
173 data = td->data;
174 break;
175 case FHCI_TF_CTRL:
176 case FHCI_TF_BULK:
177 len = min(td->len - td->actual_len, ed->max_pkt_size);
178 if (!((td->type == FHCI_TA_IN) &&
179 ((len + td->actual_len) == td->len)))
180 data = td->data + td->actual_len;
181 break;
182 case FHCI_TF_INTR:
183 len = min(td->len, ed->max_pkt_size);
184 if (!((td->type == FHCI_TA_IN) &&
185 ((td->len + CRC_SIZE) >= ed->max_pkt_size)))
186 data = td->data;
187 break;
188 default:
189 break;
190 }
191
192 if (usb->port_status == FHCI_PORT_FULL)
193 fw_transaction_time = (((len + PROTOCOL_OVERHEAD) * 11) >> 4);
194 else
195 fw_transaction_time = ((len + PROTOCOL_OVERHEAD) * 6);
196
197 /* check if there's enough space in this frame to submit this TD */
198 if (usb->actual_frame->total_bytes + len + PROTOCOL_OVERHEAD >=
199 usb->max_bytes_per_frame) {
200 fhci_vdbg(usb->fhci, "not enough space in this frame: "
201 "%d %d %d\n", usb->actual_frame->total_bytes, len,
202 usb->max_bytes_per_frame);
203 return -1;
204 }
205
206 /* check if there's enough time in this frame to submit this TD */
207 if (usb->actual_frame->frame_status != FRAME_IS_PREPARED &&
208 (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION ||
209 (fw_transaction_time + usb->sw_transaction_time >=
210 1000 - fhci_get_sof_timer_count(usb)))) {
211 fhci_dbg(usb->fhci, "not enough time in this frame\n");
212 return -1;
213 }
214
215 /* update frame object fields before transmitting */
216 pkt = cq_get(usb->ep0->empty_frame_Q);
217 if (!pkt) {
218 fhci_dbg(usb->fhci, "there is no empty frame\n");
219 return -1;
220 }
221 td->pkt = pkt;
222
223 pkt->info = 0;
224 if (data == NULL) {
225 data = cq_get(usb->ep0->dummy_packets_Q);
226 BUG_ON(!data);
227 pkt->info = PKT_DUMMY_PACKET;
228 }
229 pkt->data = data;
230 pkt->len = len;
231 pkt->status = USB_TD_OK;
232 /* update TD status field before transmitting */
233 td->status = USB_TD_INPROGRESS;
234 /* update actual frame time object with the actual transmission */
235 usb->actual_frame->total_bytes += (len + PROTOCOL_OVERHEAD);
236 fhci_add_td_to_frame(usb->actual_frame, td);
237
238 if (usb->port_status != FHCI_PORT_FULL &&
239 usb->port_status != FHCI_PORT_LOW) {
240 pkt->status = USB_TD_TX_ER_TIMEOUT;
241 pkt->len = 0;
242 fhci_transaction_confirm(usb, pkt);
243 } else if (fhci_host_transaction(usb, pkt, td->type, ed->dev_addr,
244 ed->ep_addr, ed->mode, ed->speed, td->toggle)) {
245 /* remove TD from actual frame */
246 list_del_init(&td->frame_lh);
247 td->status = USB_TD_OK;
248 if (pkt->info & PKT_DUMMY_PACKET)
249 cq_put(usb->ep0->dummy_packets_Q, pkt->data);
250 recycle_frame(usb, pkt);
251 usb->actual_frame->total_bytes -= (len + PROTOCOL_OVERHEAD);
252 fhci_err(usb->fhci, "host transaction failed\n");
253 return -1;
254 }
255
256 return len;
257}
258
259static void move_head_to_tail(struct list_head *list)
260{
261 struct list_head *node = list->next;
262
263 if (!list_empty(list)) {
264 list_del(node);
265 list_add_tail(node, list);
266 }
267}
268
269/*
270 * This function goes through the endpoint list and schedules the
271 * transactions within this list
272 */
273static int scan_ed_list(struct fhci_usb *usb,
274 struct list_head *list, enum fhci_tf_mode list_type)
275{
276 static const int frame_part[4] = {
277 [FHCI_TF_CTRL] = MAX_BYTES_PER_FRAME,
278 [FHCI_TF_ISO] = (MAX_BYTES_PER_FRAME *
279 MAX_PERIODIC_FRAME_USAGE) / 100,
280 [FHCI_TF_BULK] = MAX_BYTES_PER_FRAME,
281 [FHCI_TF_INTR] = (MAX_BYTES_PER_FRAME *
282 MAX_PERIODIC_FRAME_USAGE) / 100
283 };
284 struct ed *ed;
285 struct td *td;
286 int ans = 1;
287 u32 save_transaction_time = usb->sw_transaction_time;
288
289 list_for_each_entry(ed, list, node) {
290 td = ed->td_head;
291
292 if (!td || (td && td->status == USB_TD_INPROGRESS))
293 continue;
294
295 if (ed->state != FHCI_ED_OPER) {
296 if (ed->state == FHCI_ED_URB_DEL) {
297 td->status = USB_TD_OK;
298 fhci_move_td_from_ed_to_done_list(usb, ed);
299 ed->state = FHCI_ED_SKIP;
300 }
301 continue;
302 }
303
304 /*
305 * if it isn't interrupt pipe or it is not iso pipe and the
306 * interval time passed
307 */
308 if ((list_type == FHCI_TF_INTR || list_type == FHCI_TF_ISO) &&
309 (((usb->actual_frame->frame_num -
310 td->start_frame) & 0x7ff) < td->interval))
311 continue;
312
313 if (add_packet(usb, ed, td) < 0)
314 continue;
315
316 /* update time stamps in the TD */
317 td->start_frame = usb->actual_frame->frame_num;
318 usb->sw_transaction_time += save_transaction_time;
319
320 if (usb->actual_frame->total_bytes >=
321 usb->max_bytes_per_frame) {
322 usb->actual_frame->frame_status =
323 FRAME_DATA_END_TRANSMISSION;
324 fhci_push_dummy_bd(usb->ep0);
325 ans = 0;
326 break;
327 }
328
329 if (usb->actual_frame->total_bytes >= frame_part[list_type])
330 break;
331 }
332
333 /* be fair to each ED(move list head around) */
334 move_head_to_tail(list);
335 usb->sw_transaction_time = save_transaction_time;
336
337 return ans;
338}
339
340static u32 rotate_frames(struct fhci_usb *usb)
341{
342 struct fhci_hcd *fhci = usb->fhci;
343
344 if (!list_empty(&usb->actual_frame->tds_list)) {
345 if ((((in_be16(&fhci->pram->frame_num) & 0x07ff) -
346 usb->actual_frame->frame_num) & 0x7ff) > 5)
347 fhci_flush_actual_frame(usb);
348 else
349 return -EINVAL;
350 }
351
352 usb->actual_frame->frame_status = FRAME_IS_PREPARED;
353 usb->actual_frame->frame_num = in_be16(&fhci->pram->frame_num) & 0x7ff;
354 usb->actual_frame->total_bytes = 0;
355
356 return 0;
357}
358
359/*
360 * This function schedule the USB transaction and will process the
361 * endpoint in the following order: iso, interrupt, control and bulk.
362 */
363void fhci_schedule_transactions(struct fhci_usb *usb)
364{
365 int left = 1;
366
367 if (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION)
368 if (rotate_frames(usb) != 0)
369 return;
370
371 if (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION)
372 return;
373
374 if (usb->actual_frame->total_bytes == 0) {
375 /*
376 * schedule the next available ISO transfer
377 *or next stage of the ISO transfer
378 */
379 scan_ed_list(usb, &usb->hc_list->iso_list, FHCI_TF_ISO);
380
381 /*
382 * schedule the next available interrupt transfer or
383 * the next stage of the interrupt transfer
384 */
385 scan_ed_list(usb, &usb->hc_list->intr_list, FHCI_TF_INTR);
386
387 /*
388 * schedule the next available control transfer
389 * or the next stage of the control transfer
390 */
391 left = scan_ed_list(usb, &usb->hc_list->ctrl_list,
392 FHCI_TF_CTRL);
393 }
394
395 /*
396 * schedule the next available bulk transfer or the next stage of the
397 * bulk transfer
398 */
399 if (left > 0)
400 scan_ed_list(usb, &usb->hc_list->bulk_list, FHCI_TF_BULK);
401}
402
403/* Handles SOF interrupt */
404static void sof_interrupt(struct fhci_hcd *fhci)
405{
406 struct fhci_usb *usb = fhci->usb_lld;
407
408 if ((usb->port_status == FHCI_PORT_DISABLED) &&
409 (usb->vroot_hub->port.wPortStatus & USB_PORT_STAT_CONNECTION) &&
410 !(usb->vroot_hub->port.wPortChange & USB_PORT_STAT_C_CONNECTION)) {
411 if (usb->vroot_hub->port.wPortStatus & USB_PORT_STAT_LOW_SPEED)
412 usb->port_status = FHCI_PORT_LOW;
413 else
414 usb->port_status = FHCI_PORT_FULL;
415 /* Disable IDLE */
416 usb->saved_msk &= ~USB_E_IDLE_MASK;
417 out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
418 }
419
420 gtm_set_exact_timer16(fhci->timer, usb->max_frame_usage, false);
421
422 fhci_host_transmit_actual_frame(usb);
423 usb->actual_frame->frame_status = FRAME_IS_TRANSMITTED;
424
425 fhci_schedule_transactions(usb);
426}
427
428/* Handles device disconnected interrupt on port */
429void fhci_device_disconnected_interrupt(struct fhci_hcd *fhci)
430{
431 struct fhci_usb *usb = fhci->usb_lld;
432
433 fhci_dbg(fhci, "-> %s\n", __func__);
434
435 fhci_usb_disable_interrupt(usb);
436 clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS);
437 usb->port_status = FHCI_PORT_DISABLED;
438
439 fhci_stop_sof_timer(fhci);
440
441 /* Enable IDLE since we want to know if something comes along */
442 usb->saved_msk |= USB_E_IDLE_MASK;
443 out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
444
445 usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_CONNECTION;
446 usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_CONNECTION;
447 usb->max_bytes_per_frame = 0;
448 fhci_usb_enable_interrupt(usb);
449
450 fhci_dbg(fhci, "<- %s\n", __func__);
451}
452
453/* detect a new device connected on the USB port */
454void fhci_device_connected_interrupt(struct fhci_hcd *fhci)
455{
456
457 struct fhci_usb *usb = fhci->usb_lld;
458 int state;
459 int ret;
460
461 fhci_dbg(fhci, "-> %s\n", __func__);
462
463 fhci_usb_disable_interrupt(usb);
464 state = fhci_ioports_check_bus_state(fhci);
465
466 /* low-speed device was connected to the USB port */
467 if (state == 1) {
468 ret = qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3);
469 if (ret) {
470 fhci_warn(fhci, "Low-Speed device is not supported, "
471 "try use BRGx\n");
472 goto out;
473 }
474
475 usb->port_status = FHCI_PORT_LOW;
476 setbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS);
477 usb->vroot_hub->port.wPortStatus |=
478 (USB_PORT_STAT_LOW_SPEED |
479 USB_PORT_STAT_CONNECTION);
480 usb->vroot_hub->port.wPortChange |=
481 USB_PORT_STAT_C_CONNECTION;
482 usb->max_bytes_per_frame =
483 (MAX_BYTES_PER_FRAME >> 3) - 7;
484 fhci_port_enable(usb);
485 } else if (state == 2) {
486 ret = qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK);
487 if (ret) {
488 fhci_warn(fhci, "Full-Speed device is not supported, "
489 "try use CLKx\n");
490 goto out;
491 }
492
493 usb->port_status = FHCI_PORT_FULL;
494 clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS);
495 usb->vroot_hub->port.wPortStatus &=
496 ~USB_PORT_STAT_LOW_SPEED;
497 usb->vroot_hub->port.wPortStatus |=
498 USB_PORT_STAT_CONNECTION;
499 usb->vroot_hub->port.wPortChange |=
500 USB_PORT_STAT_C_CONNECTION;
501 usb->max_bytes_per_frame = (MAX_BYTES_PER_FRAME - 15);
502 fhci_port_enable(usb);
503 }
504out:
505 fhci_usb_enable_interrupt(usb);
506 fhci_dbg(fhci, "<- %s\n", __func__);
507}
508
509irqreturn_t fhci_frame_limit_timer_irq(int irq, void *_hcd)
510{
511 struct usb_hcd *hcd = _hcd;
512 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
513 struct fhci_usb *usb = fhci->usb_lld;
514
515 spin_lock(&fhci->lock);
516
517 gtm_set_exact_timer16(fhci->timer, 1000, false);
518
519 if (usb->actual_frame->frame_status == FRAME_IS_TRANSMITTED) {
520 usb->actual_frame->frame_status = FRAME_TIMER_END_TRANSMISSION;
521 fhci_push_dummy_bd(usb->ep0);
522 }
523
524 fhci_schedule_transactions(usb);
525
526 spin_unlock(&fhci->lock);
527
528 return IRQ_HANDLED;
529}
530
531/* Cancel transmission on the USB endpoint */
532static void abort_transmission(struct fhci_usb *usb)
533{
534 fhci_dbg(usb->fhci, "-> %s\n", __func__);
535 /* issue stop Tx command */
536 qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB, EP_ZERO, 0);
537 /* flush Tx FIFOs */
538 out_8(&usb->fhci->regs->usb_comm, USB_CMD_FLUSH_FIFO | EP_ZERO);
539 udelay(1000);
540 /* reset Tx BDs */
541 fhci_flush_bds(usb);
542 /* issue restart Tx command */
543 qe_issue_cmd(QE_USB_RESTART_TX, QE_CR_SUBBLOCK_USB, EP_ZERO, 0);
544 fhci_dbg(usb->fhci, "<- %s\n", __func__);
545}
546
547irqreturn_t fhci_irq(struct usb_hcd *hcd)
548{
549 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
550 struct fhci_usb *usb;
551 u16 usb_er = 0;
552 unsigned long flags;
553
554 spin_lock_irqsave(&fhci->lock, flags);
555
556 usb = fhci->usb_lld;
557
558 usb_er |= in_be16(&usb->fhci->regs->usb_event) &
559 in_be16(&usb->fhci->regs->usb_mask);
560
561 /* clear event bits for next time */
562 out_be16(&usb->fhci->regs->usb_event, usb_er);
563
564 fhci_dbg_isr(fhci, usb_er);
565
566 if (usb_er & USB_E_RESET_MASK) {
567 if ((usb->port_status == FHCI_PORT_FULL) ||
568 (usb->port_status == FHCI_PORT_LOW)) {
569 fhci_device_disconnected_interrupt(fhci);
570 usb_er &= ~USB_E_IDLE_MASK;
571 } else if (usb->port_status == FHCI_PORT_WAITING) {
572 usb->port_status = FHCI_PORT_DISCONNECTING;
573
574 /* Turn on IDLE since we want to disconnect */
575 usb->saved_msk |= USB_E_IDLE_MASK;
576 out_be16(&usb->fhci->regs->usb_event,
577 usb->saved_msk);
578 } else if (usb->port_status == FHCI_PORT_DISABLED) {
579 if (fhci_ioports_check_bus_state(fhci) == 1 &&
580 usb->port_status != FHCI_PORT_LOW &&
581 usb->port_status != FHCI_PORT_FULL)
582 fhci_device_connected_interrupt(fhci);
583 }
584 usb_er &= ~USB_E_RESET_MASK;
585 }
586
587 if (usb_er & USB_E_MSF_MASK) {
588 abort_transmission(fhci->usb_lld);
589 usb_er &= ~USB_E_MSF_MASK;
590 }
591
592 if (usb_er & (USB_E_SOF_MASK | USB_E_SFT_MASK)) {
593 sof_interrupt(fhci);
594 usb_er &= ~(USB_E_SOF_MASK | USB_E_SFT_MASK);
595 }
596
597 if (usb_er & USB_E_TXB_MASK) {
598 fhci_tx_conf_interrupt(fhci->usb_lld);
599 usb_er &= ~USB_E_TXB_MASK;
600 }
601
602 if (usb_er & USB_E_TXE1_MASK) {
603 fhci_tx_conf_interrupt(fhci->usb_lld);
604 usb_er &= ~USB_E_TXE1_MASK;
605 }
606
607 if (usb_er & USB_E_IDLE_MASK) {
608 if (usb->port_status == FHCI_PORT_DISABLED &&
609 usb->port_status != FHCI_PORT_LOW &&
610 usb->port_status != FHCI_PORT_FULL) {
611 usb_er &= ~USB_E_RESET_MASK;
612 fhci_device_connected_interrupt(fhci);
613 } else if (usb->port_status ==
614 FHCI_PORT_DISCONNECTING) {
615 /* XXX usb->port_status = FHCI_PORT_WAITING; */
616 /* Disable IDLE */
617 usb->saved_msk &= ~USB_E_IDLE_MASK;
618 out_be16(&usb->fhci->regs->usb_mask,
619 usb->saved_msk);
620 } else {
621 fhci_dbg_isr(fhci, -1);
622 }
623
624 usb_er &= ~USB_E_IDLE_MASK;
625 }
626
627 spin_unlock_irqrestore(&fhci->lock, flags);
628
629 return IRQ_HANDLED;
630}
631
632
633/*
634 * Process normal completions(error or sucess) and clean the schedule.
635 *
636 * This is the main path for handing urbs back to drivers. The only other patth
637 * is process_del_list(),which unlinks URBs by scanning EDs,instead of scanning
638 * the (re-reversed) done list as this does.
639 */
640static void process_done_list(unsigned long data)
641{
642 struct urb *urb;
643 struct ed *ed;
644 struct td *td;
645 struct urb_priv *urb_priv;
646 struct fhci_hcd *fhci = (struct fhci_hcd *)data;
647
648 disable_irq(fhci->timer->irq);
649 disable_irq(fhci_to_hcd(fhci)->irq);
650 spin_lock(&fhci->lock);
651
652 td = fhci_remove_td_from_done_list(fhci->hc_list);
653 while (td != NULL) {
654 urb = td->urb;
655 urb_priv = urb->hcpriv;
656 ed = td->ed;
657
658 /* update URB's length and status from TD */
659 fhci_done_td(urb, td);
660 urb_priv->tds_cnt++;
661
662 /*
663 * if all this urb's TDs are done, call complete()
664 * Interrupt transfers are the onley special case:
665 * they are reissued,until "deleted" by usb_unlink_urb
666 * (real work done in a SOF intr, by process_del_list)
667 */
668 if (urb_priv->tds_cnt == urb_priv->num_of_tds) {
669 fhci_urb_complete_free(fhci, urb);
670 } else if (urb_priv->state == URB_DEL &&
671 ed->state == FHCI_ED_SKIP) {
672 fhci_del_ed_list(fhci, ed);
673 ed->state = FHCI_ED_OPER;
674 } else if (ed->state == FHCI_ED_HALTED) {
675 urb_priv->state = URB_DEL;
676 ed->state = FHCI_ED_URB_DEL;
677 fhci_del_ed_list(fhci, ed);
678 ed->state = FHCI_ED_OPER;
679 }
680
681 td = fhci_remove_td_from_done_list(fhci->hc_list);
682 }
683
684 spin_unlock(&fhci->lock);
685 enable_irq(fhci->timer->irq);
686 enable_irq(fhci_to_hcd(fhci)->irq);
687}
688
689DECLARE_TASKLET(fhci_tasklet, process_done_list, 0);
690
691/* transfer complted callback */
692u32 fhci_transfer_confirm_callback(struct fhci_hcd *fhci)
693{
694 if (!fhci->process_done_task->state)
695 tasklet_schedule(fhci->process_done_task);
696 return 0;
697}
698
699/*
700 * adds urb to the endpoint descriptor list
701 * arguments:
702 * fhci data structure for the Low level host controller
703 * ep USB Host endpoint data structure
704 * urb USB request block data structure
705 */
706void fhci_queue_urb(struct fhci_hcd *fhci, struct urb *urb)
707{
708 struct ed *ed = urb->ep->hcpriv;
709 struct urb_priv *urb_priv = urb->hcpriv;
710 u32 data_len = urb->transfer_buffer_length;
711 int urb_state = 0;
712 int toggle = 0;
713 struct td *td;
714 u8 *data;
715 u16 cnt = 0;
716
717 if (ed == NULL) {
718 ed = fhci_get_empty_ed(fhci);
719 ed->dev_addr = usb_pipedevice(urb->pipe);
720 ed->ep_addr = usb_pipeendpoint(urb->pipe);
721 switch (usb_pipetype(urb->pipe)) {
722 case PIPE_CONTROL:
723 ed->mode = FHCI_TF_CTRL;
724 break;
725 case PIPE_BULK:
726 ed->mode = FHCI_TF_BULK;
727 break;
728 case PIPE_INTERRUPT:
729 ed->mode = FHCI_TF_INTR;
730 break;
731 case PIPE_ISOCHRONOUS:
732 ed->mode = FHCI_TF_ISO;
733 break;
734 default:
735 break;
736 }
737 ed->speed = (urb->dev->speed == USB_SPEED_LOW) ?
738 FHCI_LOW_SPEED : FHCI_FULL_SPEED;
739 ed->max_pkt_size = usb_maxpacket(urb->dev,
740 urb->pipe, usb_pipeout(urb->pipe));
741 urb->ep->hcpriv = ed;
742 fhci_dbg(fhci, "new ep speed=%d max_pkt_size=%d\n",
743 ed->speed, ed->max_pkt_size);
744 }
745
746 /* for ISO transfer calculate start frame index */
747 if (ed->mode == FHCI_TF_ISO && urb->transfer_flags & URB_ISO_ASAP)
748 urb->start_frame = ed->td_head ? ed->last_iso + 1 :
749 get_frame_num(fhci);
750
751 /*
752 * OHCI handles the DATA toggle itself,we just use the USB
753 * toggle bits
754 */
755 if (usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
756 usb_pipeout(urb->pipe)))
757 toggle = USB_TD_TOGGLE_CARRY;
758 else {
759 toggle = USB_TD_TOGGLE_DATA0;
760 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
761 usb_pipeout(urb->pipe), 1);
762 }
763
764 urb_priv->tds_cnt = 0;
765 urb_priv->ed = ed;
766 if (data_len > 0)
767 data = urb->transfer_buffer;
768 else
769 data = NULL;
770
771 switch (ed->mode) {
772 case FHCI_TF_BULK:
773 if (urb->transfer_flags & URB_ZERO_PACKET &&
774 urb->transfer_buffer_length > 0 &&
775 ((urb->transfer_buffer_length %
776 usb_maxpacket(urb->dev, urb->pipe,
777 usb_pipeout(urb->pipe))) == 0))
778 urb_state = US_BULK0;
779 while (data_len > 4096) {
780 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt,
781 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
782 FHCI_TA_IN,
783 cnt ? USB_TD_TOGGLE_CARRY :
784 toggle,
785 data, 4096, 0, 0, true);
786 data += 4096;
787 data_len -= 4096;
788 cnt++;
789 }
790
791 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt,
792 usb_pipeout(urb->pipe) ? FHCI_TA_OUT : FHCI_TA_IN,
793 cnt ? USB_TD_TOGGLE_CARRY : toggle,
794 data, data_len, 0, 0, true);
795 cnt++;
796
797 if (urb->transfer_flags & URB_ZERO_PACKET &&
798 cnt < urb_priv->num_of_tds) {
799 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt,
800 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
801 FHCI_TA_IN,
802 USB_TD_TOGGLE_CARRY, NULL, 0, 0, 0, true);
803 cnt++;
804 }
805 break;
806 case FHCI_TF_INTR:
807 urb->start_frame = get_frame_num(fhci) + 1;
808 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
809 usb_pipeout(urb->pipe) ? FHCI_TA_OUT : FHCI_TA_IN,
810 USB_TD_TOGGLE_DATA0, data, data_len,
811 urb->interval, urb->start_frame, true);
812 break;
813 case FHCI_TF_CTRL:
814 ed->dev_addr = usb_pipedevice(urb->pipe);
815 ed->max_pkt_size = usb_maxpacket(urb->dev, urb->pipe,
816 usb_pipeout(urb->pipe));
817 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++, FHCI_TA_SETUP,
818 USB_TD_TOGGLE_DATA0, urb->setup_packet, 8, 0, 0, true);
819
820 if (data_len > 0) {
821 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
822 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
823 FHCI_TA_IN,
824 USB_TD_TOGGLE_DATA1, data, data_len, 0, 0,
825 true);
826 }
827 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
828 usb_pipeout(urb->pipe) ? FHCI_TA_IN : FHCI_TA_OUT,
829 USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true);
830 urb_state = US_CTRL_SETUP;
831 break;
832 case FHCI_TF_ISO:
833 for (cnt = 0; cnt < urb->number_of_packets; cnt++) {
834 u16 frame = urb->start_frame;
835
836 /*
837 * FIXME scheduling should handle frame counter
838 * roll-around ... exotic case (and OHCI has
839 * a 2^16 iso range, vs other HCs max of 2^10)
840 */
841 frame += cnt * urb->interval;
842 frame &= 0x07ff;
843 td = fhci_td_fill(fhci, urb, urb_priv, ed, cnt,
844 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
845 FHCI_TA_IN,
846 USB_TD_TOGGLE_DATA0,
847 data + urb->iso_frame_desc[cnt].offset,
848 urb->iso_frame_desc[cnt].length,
849 urb->interval, frame, true);
850 }
851 break;
852 default:
853 break;
854 }
855
856 /*
857 * set the state of URB
858 * control pipe:3 states -- setup,data,status
859 * interrupt and bulk pipe:1 state -- data
860 */
861 urb->pipe &= ~0x1f;
862 urb->pipe |= urb_state & 0x1f;
863
864 urb_priv->state = URB_INPROGRESS;
865
866 if (!ed->td_head) {
867 ed->state = FHCI_ED_OPER;
868 switch (ed->mode) {
869 case FHCI_TF_CTRL:
870 list_add(&ed->node, &fhci->hc_list->ctrl_list);
871 break;
872 case FHCI_TF_BULK:
873 list_add(&ed->node, &fhci->hc_list->bulk_list);
874 break;
875 case FHCI_TF_INTR:
876 list_add(&ed->node, &fhci->hc_list->intr_list);
877 break;
878 case FHCI_TF_ISO:
879 list_add(&ed->node, &fhci->hc_list->iso_list);
880 break;
881 default:
882 break;
883 }
884 }
885
886 fhci_add_tds_to_ed(ed, urb_priv->tds, urb_priv->num_of_tds);
887 fhci->active_urbs++;
888}
diff --git a/drivers/usb/host/fhci-tds.c b/drivers/usb/host/fhci-tds.c
new file mode 100644
index 000000000000..b40332290319
--- /dev/null
+++ b/drivers/usb/host/fhci-tds.c
@@ -0,0 +1,626 @@
1/*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18#include <linux/kernel.h>
19#include <linux/types.h>
20#include <linux/errno.h>
21#include <linux/list.h>
22#include <linux/io.h>
23#include <linux/usb.h>
24#include "../core/hcd.h"
25#include "fhci.h"
26
27#define DUMMY_BD_BUFFER 0xdeadbeef
28#define DUMMY2_BD_BUFFER 0xbaadf00d
29
30/* Transaction Descriptors bits */
31#define TD_R 0x8000 /* ready bit */
32#define TD_W 0x2000 /* wrap bit */
33#define TD_I 0x1000 /* interrupt on completion */
34#define TD_L 0x0800 /* last */
35#define TD_TC 0x0400 /* transmit CRC */
36#define TD_CNF 0x0200 /* CNF - Must be always 1 */
37#define TD_LSP 0x0100 /* Low-speed transaction */
38#define TD_PID 0x00c0 /* packet id */
39#define TD_RXER 0x0020 /* Rx error or not */
40
41#define TD_NAK 0x0010 /* No ack. */
42#define TD_STAL 0x0008 /* Stall recieved */
43#define TD_TO 0x0004 /* time out */
44#define TD_UN 0x0002 /* underrun */
45#define TD_NO 0x0010 /* Rx Non Octet Aligned Packet */
46#define TD_AB 0x0008 /* Frame Aborted */
47#define TD_CR 0x0004 /* CRC Error */
48#define TD_OV 0x0002 /* Overrun */
49#define TD_BOV 0x0001 /* Buffer Overrun */
50
51#define TD_ERRORS (TD_NAK | TD_STAL | TD_TO | TD_UN | \
52 TD_NO | TD_AB | TD_CR | TD_OV | TD_BOV)
53
54#define TD_PID_DATA0 0x0080 /* Data 0 toggle */
55#define TD_PID_DATA1 0x00c0 /* Data 1 toggle */
56#define TD_PID_TOGGLE 0x00c0 /* Data 0/1 toggle mask */
57
58#define TD_TOK_SETUP 0x0000
59#define TD_TOK_OUT 0x4000
60#define TD_TOK_IN 0x8000
61#define TD_ISO 0x1000
62#define TD_ENDP 0x0780
63#define TD_ADDR 0x007f
64
65#define TD_ENDP_SHIFT 7
66
67struct usb_td {
68 __be16 status;
69 __be16 length;
70 __be32 buf_ptr;
71 __be16 extra;
72 __be16 reserved;
73};
74
75static struct usb_td __iomem *next_bd(struct usb_td __iomem *base,
76 struct usb_td __iomem *td,
77 u16 status)
78{
79 if (status & TD_W)
80 return base;
81 else
82 return ++td;
83}
84
85void fhci_push_dummy_bd(struct endpoint *ep)
86{
87 if (ep->already_pushed_dummy_bd == false) {
88 u16 td_status = in_be16(&ep->empty_td->status);
89
90 out_be32(&ep->empty_td->buf_ptr, DUMMY_BD_BUFFER);
91 /* get the next TD in the ring */
92 ep->empty_td = next_bd(ep->td_base, ep->empty_td, td_status);
93 ep->already_pushed_dummy_bd = true;
94 }
95}
96
97/* destroy an USB endpoint */
98void fhci_ep0_free(struct fhci_usb *usb)
99{
100 struct endpoint *ep;
101 int size;
102
103 ep = usb->ep0;
104 if (ep) {
105 if (ep->td_base)
106 cpm_muram_free(cpm_muram_offset(ep->td_base));
107
108 if (ep->conf_frame_Q) {
109 size = cq_howmany(ep->conf_frame_Q);
110 for (; size; size--) {
111 struct packet *pkt = cq_get(ep->conf_frame_Q);
112
113 kfree(pkt);
114 }
115 cq_delete(ep->conf_frame_Q);
116 }
117
118 if (ep->empty_frame_Q) {
119 size = cq_howmany(ep->empty_frame_Q);
120 for (; size; size--) {
121 struct packet *pkt = cq_get(ep->empty_frame_Q);
122
123 kfree(pkt);
124 }
125 cq_delete(ep->empty_frame_Q);
126 }
127
128 if (ep->dummy_packets_Q) {
129 size = cq_howmany(ep->dummy_packets_Q);
130 for (; size; size--) {
131 u8 *buff = cq_get(ep->dummy_packets_Q);
132
133 kfree(buff);
134 }
135 cq_delete(ep->dummy_packets_Q);
136 }
137
138 kfree(ep);
139 usb->ep0 = NULL;
140 }
141}
142
143/*
144 * create the endpoint structure
145 *
146 * arguments:
147 * usb A pointer to the data structure of the USB
148 * data_mem The data memory partition(BUS)
149 * ring_len TD ring length
150 */
151u32 fhci_create_ep(struct fhci_usb *usb, enum fhci_mem_alloc data_mem,
152 u32 ring_len)
153{
154 struct endpoint *ep;
155 struct usb_td __iomem *td;
156 unsigned long ep_offset;
157 char *err_for = "enpoint PRAM";
158 int ep_mem_size;
159 u32 i;
160
161 /* we need at least 3 TDs in the ring */
162 if (!(ring_len > 2)) {
163 fhci_err(usb->fhci, "illegal TD ring length parameters\n");
164 return -EINVAL;
165 }
166
167 ep = kzalloc(sizeof(*ep), GFP_KERNEL);
168 if (!ep)
169 return -ENOMEM;
170
171 ep_mem_size = ring_len * sizeof(*td) + sizeof(struct fhci_ep_pram);
172 ep_offset = cpm_muram_alloc(ep_mem_size, 32);
173 if (IS_ERR_VALUE(ep_offset))
174 goto err;
175 ep->td_base = cpm_muram_addr(ep_offset);
176
177 /* zero all queue pointers */
178 ep->conf_frame_Q = cq_new(ring_len + 2);
179 ep->empty_frame_Q = cq_new(ring_len + 2);
180 ep->dummy_packets_Q = cq_new(ring_len + 2);
181 if (!ep->conf_frame_Q || !ep->empty_frame_Q || !ep->dummy_packets_Q) {
182 err_for = "frame_queues";
183 goto err;
184 }
185
186 for (i = 0; i < (ring_len + 1); i++) {
187 struct packet *pkt;
188 u8 *buff;
189
190 pkt = kmalloc(sizeof(*pkt), GFP_KERNEL);
191 if (!pkt) {
192 err_for = "frame";
193 goto err;
194 }
195
196 buff = kmalloc(1028 * sizeof(*buff), GFP_KERNEL);
197 if (!buff) {
198 kfree(pkt);
199 err_for = "buffer";
200 goto err;
201 }
202 cq_put(ep->empty_frame_Q, pkt);
203 cq_put(ep->dummy_packets_Q, buff);
204 }
205
206 /* we put the endpoint parameter RAM right behind the TD ring */
207 ep->ep_pram_ptr = (void __iomem *)ep->td_base + sizeof(*td) * ring_len;
208
209 ep->conf_td = ep->td_base;
210 ep->empty_td = ep->td_base;
211
212 ep->already_pushed_dummy_bd = false;
213
214 /* initialize tds */
215 td = ep->td_base;
216 for (i = 0; i < ring_len; i++) {
217 out_be32(&td->buf_ptr, 0);
218 out_be16(&td->status, 0);
219 out_be16(&td->length, 0);
220 out_be16(&td->extra, 0);
221 td++;
222 }
223 td--;
224 out_be16(&td->status, TD_W); /* for last TD set Wrap bit */
225 out_be16(&td->length, 0);
226
227 /* endpoint structure has been created */
228 usb->ep0 = ep;
229
230 return 0;
231err:
232 fhci_ep0_free(usb);
233 kfree(ep);
234 fhci_err(usb->fhci, "no memory for the %s\n", err_for);
235 return -ENOMEM;
236}
237
238/*
239 * initialize the endpoint register according to the given parameters
240 *
241 * artuments:
242 * usb A pointer to the data strucutre of the USB
243 * ep A pointer to the endpoint structre
244 * data_mem The data memory partition(BUS)
245 */
246void fhci_init_ep_registers(struct fhci_usb *usb, struct endpoint *ep,
247 enum fhci_mem_alloc data_mem)
248{
249 u8 rt;
250
251 /* set the endpoint registers according to the endpoint */
252 out_be16(&usb->fhci->regs->usb_ep[0],
253 USB_TRANS_CTR | USB_EP_MF | USB_EP_RTE);
254 out_be16(&usb->fhci->pram->ep_ptr[0],
255 cpm_muram_offset(ep->ep_pram_ptr));
256
257 rt = (BUS_MODE_BO_BE | BUS_MODE_GBL);
258#ifdef MULTI_DATA_BUS
259 if (data_mem == MEM_SECONDARY)
260 rt |= BUS_MODE_DTB;
261#endif
262 out_8(&ep->ep_pram_ptr->rx_func_code, rt);
263 out_8(&ep->ep_pram_ptr->tx_func_code, rt);
264 out_be16(&ep->ep_pram_ptr->rx_buff_len, 1028);
265 out_be16(&ep->ep_pram_ptr->rx_base, 0);
266 out_be16(&ep->ep_pram_ptr->tx_base, cpm_muram_offset(ep->td_base));
267 out_be16(&ep->ep_pram_ptr->rx_bd_ptr, 0);
268 out_be16(&ep->ep_pram_ptr->tx_bd_ptr, cpm_muram_offset(ep->td_base));
269 out_be32(&ep->ep_pram_ptr->tx_state, 0);
270}
271
272/*
273 * Collect the submitted frames and inform the application about them
274 * It is also prepearing the TDs for new frames. If the Tx interrupts
275 * are diabled, the application should call that routine to get
276 * confirmation about the submitted frames. Otherwise, the routine is
277 * called frome the interrupt service routine during the Tx interrupt.
278 * In that case the application is informed by calling the application
279 * specific 'fhci_transaction_confirm' routine
280 */
281static void fhci_td_transaction_confirm(struct fhci_usb *usb)
282{
283 struct endpoint *ep = usb->ep0;
284 struct packet *pkt;
285 struct usb_td __iomem *td;
286 u16 extra_data;
287 u16 td_status;
288 u16 td_length;
289 u32 buf;
290
291 /*
292 * collect transmitted BDs from the chip. The routine clears all BDs
293 * with R bit = 0 and the pointer to data buffer is not NULL, that is
294 * BDs which point to the transmitted data buffer
295 */
296 while (1) {
297 td = ep->conf_td;
298 td_status = in_be16(&td->status);
299 td_length = in_be16(&td->length);
300 buf = in_be32(&td->buf_ptr);
301 extra_data = in_be16(&td->extra);
302
303 /* check if the TD is empty */
304 if (!(!(td_status & TD_R) && ((td_status & ~TD_W) || buf)))
305 break;
306 /* check if it is a dummy buffer */
307 else if ((buf == DUMMY_BD_BUFFER) && !(td_status & ~TD_W))
308 break;
309
310 /* mark TD as empty */
311 clrbits16(&td->status, ~TD_W);
312 out_be16(&td->length, 0);
313 out_be32(&td->buf_ptr, 0);
314 out_be16(&td->extra, 0);
315 /* advance the TD pointer */
316 ep->conf_td = next_bd(ep->td_base, ep->conf_td, td_status);
317
318 /* check if it is a dummy buffer(type2) */
319 if ((buf == DUMMY2_BD_BUFFER) && !(td_status & ~TD_W))
320 continue;
321
322 pkt = cq_get(ep->conf_frame_Q);
323 if (!pkt)
324 fhci_err(usb->fhci, "no frame to confirm\n");
325
326 if (td_status & TD_ERRORS) {
327 if (td_status & TD_RXER) {
328 if (td_status & TD_CR)
329 pkt->status = USB_TD_RX_ER_CRC;
330 else if (td_status & TD_AB)
331 pkt->status = USB_TD_RX_ER_BITSTUFF;
332 else if (td_status & TD_OV)
333 pkt->status = USB_TD_RX_ER_OVERUN;
334 else if (td_status & TD_BOV)
335 pkt->status = USB_TD_RX_DATA_OVERUN;
336 else if (td_status & TD_NO)
337 pkt->status = USB_TD_RX_ER_NONOCT;
338 else
339 fhci_err(usb->fhci, "illegal error "
340 "occured\n");
341 } else if (td_status & TD_NAK)
342 pkt->status = USB_TD_TX_ER_NAK;
343 else if (td_status & TD_TO)
344 pkt->status = USB_TD_TX_ER_TIMEOUT;
345 else if (td_status & TD_UN)
346 pkt->status = USB_TD_TX_ER_UNDERUN;
347 else if (td_status & TD_STAL)
348 pkt->status = USB_TD_TX_ER_STALL;
349 else
350 fhci_err(usb->fhci, "illegal error occured\n");
351 } else if ((extra_data & TD_TOK_IN) &&
352 pkt->len > td_length - CRC_SIZE) {
353 pkt->status = USB_TD_RX_DATA_UNDERUN;
354 }
355
356 if (extra_data & TD_TOK_IN)
357 pkt->len = td_length - CRC_SIZE;
358 else if (pkt->info & PKT_ZLP)
359 pkt->len = 0;
360 else
361 pkt->len = td_length;
362
363 fhci_transaction_confirm(usb, pkt);
364 }
365}
366
367/*
368 * Submitting a data frame to a specified endpoint of a USB device
369 * The frame is put in the driver's transmit queue for this endpoint
370 *
371 * Arguments:
372 * usb A pointer to the USB structure
373 * pkt A pointer to the user frame structure
374 * trans_type Transaction tyep - IN,OUT or SETUP
375 * dest_addr Device address - 0~127
376 * dest_ep Endpoint number of the device - 0~16
377 * trans_mode Pipe type - ISO,Interrupt,bulk or control
378 * dest_speed USB speed - Low speed or FULL speed
379 * data_toggle Data sequence toggle - 0 or 1
380 */
381u32 fhci_host_transaction(struct fhci_usb *usb,
382 struct packet *pkt,
383 enum fhci_ta_type trans_type,
384 u8 dest_addr,
385 u8 dest_ep,
386 enum fhci_tf_mode trans_mode,
387 enum fhci_speed dest_speed, u8 data_toggle)
388{
389 struct endpoint *ep = usb->ep0;
390 struct usb_td __iomem *td;
391 u16 extra_data;
392 u16 td_status;
393
394 fhci_usb_disable_interrupt(usb);
395 /* start from the next BD that should be filled */
396 td = ep->empty_td;
397 td_status = in_be16(&td->status);
398
399 if (td_status & TD_R && in_be16(&td->length)) {
400 /* if the TD is not free */
401 fhci_usb_enable_interrupt(usb);
402 return -1;
403 }
404
405 /* get the next TD in the ring */
406 ep->empty_td = next_bd(ep->td_base, ep->empty_td, td_status);
407 fhci_usb_enable_interrupt(usb);
408 pkt->priv_data = td;
409 out_be32(&td->buf_ptr, virt_to_phys(pkt->data));
410 /* sets up transaction parameters - addr,endp,dir,and type */
411 extra_data = (dest_ep << TD_ENDP_SHIFT) | dest_addr;
412 switch (trans_type) {
413 case FHCI_TA_IN:
414 extra_data |= TD_TOK_IN;
415 break;
416 case FHCI_TA_OUT:
417 extra_data |= TD_TOK_OUT;
418 break;
419 case FHCI_TA_SETUP:
420 extra_data |= TD_TOK_SETUP;
421 break;
422 }
423 if (trans_mode == FHCI_TF_ISO)
424 extra_data |= TD_ISO;
425 out_be16(&td->extra, extra_data);
426
427 /* sets up the buffer descriptor */
428 td_status = ((td_status & TD_W) | TD_R | TD_L | TD_I | TD_CNF);
429 if (!(pkt->info & PKT_NO_CRC))
430 td_status |= TD_TC;
431
432 switch (trans_type) {
433 case FHCI_TA_IN:
434 if (data_toggle)
435 pkt->info |= PKT_PID_DATA1;
436 else
437 pkt->info |= PKT_PID_DATA0;
438 break;
439 default:
440 if (data_toggle) {
441 td_status |= TD_PID_DATA1;
442 pkt->info |= PKT_PID_DATA1;
443 } else {
444 td_status |= TD_PID_DATA0;
445 pkt->info |= PKT_PID_DATA0;
446 }
447 break;
448 }
449
450 if ((dest_speed == FHCI_LOW_SPEED) &&
451 (usb->port_status == FHCI_PORT_FULL))
452 td_status |= TD_LSP;
453
454 out_be16(&td->status, td_status);
455
456 /* set up buffer length */
457 if (trans_type == FHCI_TA_IN)
458 out_be16(&td->length, pkt->len + CRC_SIZE);
459 else
460 out_be16(&td->length, pkt->len);
461
462 /* put the frame to the confirmation queue */
463 cq_put(ep->conf_frame_Q, pkt);
464
465 if (cq_howmany(ep->conf_frame_Q) == 1)
466 out_8(&usb->fhci->regs->usb_comm, USB_CMD_STR_FIFO);
467
468 return 0;
469}
470
471/* Reset the Tx BD ring */
472void fhci_flush_bds(struct fhci_usb *usb)
473{
474 u16 extra_data;
475 u16 td_status;
476 u32 buf;
477 struct usb_td __iomem *td;
478 struct endpoint *ep = usb->ep0;
479
480 td = ep->td_base;
481 while (1) {
482 td_status = in_be16(&td->status);
483 buf = in_be32(&td->buf_ptr);
484 extra_data = in_be16(&td->extra);
485
486 /* if the TD is not empty - we'll confirm it as Timeout */
487 if (td_status & TD_R)
488 out_be16(&td->status, (td_status & ~TD_R) | TD_TO);
489 /* if this TD is dummy - let's skip this TD */
490 else if (in_be32(&td->buf_ptr) == DUMMY_BD_BUFFER)
491 out_be32(&td->buf_ptr, DUMMY2_BD_BUFFER);
492 /* if this is the last TD - break */
493 if (td_status & TD_W)
494 break;
495
496 td++;
497 }
498
499 fhci_td_transaction_confirm(usb);
500
501 td = ep->td_base;
502 do {
503 out_be16(&td->status, 0);
504 out_be16(&td->length, 0);
505 out_be32(&td->buf_ptr, 0);
506 out_be16(&td->extra, 0);
507 td++;
508 } while (!(in_be16(&td->status) & TD_W));
509 out_be16(&td->status, TD_W); /* for last TD set Wrap bit */
510 out_be16(&td->length, 0);
511 out_be32(&td->buf_ptr, 0);
512 out_be16(&td->extra, 0);
513
514 out_be16(&ep->ep_pram_ptr->tx_bd_ptr,
515 in_be16(&ep->ep_pram_ptr->tx_base));
516 out_be32(&ep->ep_pram_ptr->tx_state, 0);
517 out_be16(&ep->ep_pram_ptr->tx_cnt, 0);
518 ep->empty_td = ep->td_base;
519 ep->conf_td = ep->td_base;
520}
521
522/*
523 * Flush all transmitted packets from TDs in the actual frame.
524 * This routine is called when something wrong with the controller and
525 * we want to get rid of the actual frame and start again next frame
526 */
527void fhci_flush_actual_frame(struct fhci_usb *usb)
528{
529 u8 mode;
530 u16 tb_ptr;
531 u16 extra_data;
532 u16 td_status;
533 u32 buf_ptr;
534 struct usb_td __iomem *td;
535 struct endpoint *ep = usb->ep0;
536
537 /* disable the USB controller */
538 mode = in_8(&usb->fhci->regs->usb_mod);
539 out_8(&usb->fhci->regs->usb_mod, mode & ~USB_MODE_EN);
540
541 tb_ptr = in_be16(&ep->ep_pram_ptr->tx_bd_ptr);
542 td = cpm_muram_addr(tb_ptr);
543 td_status = in_be16(&td->status);
544 buf_ptr = in_be32(&td->buf_ptr);
545 extra_data = in_be16(&td->extra);
546 do {
547 if (td_status & TD_R) {
548 out_be16(&td->status, (td_status & ~TD_R) | TD_TO);
549 } else {
550 out_be32(&td->buf_ptr, 0);
551 ep->already_pushed_dummy_bd = false;
552 break;
553 }
554
555 /* advance the TD pointer */
556 td = next_bd(ep->td_base, td, td_status);
557 td_status = in_be16(&td->status);
558 buf_ptr = in_be32(&td->buf_ptr);
559 extra_data = in_be16(&td->extra);
560 } while ((td_status & TD_R) || buf_ptr);
561
562 fhci_td_transaction_confirm(usb);
563
564 out_be16(&ep->ep_pram_ptr->tx_bd_ptr,
565 in_be16(&ep->ep_pram_ptr->tx_base));
566 out_be32(&ep->ep_pram_ptr->tx_state, 0);
567 out_be16(&ep->ep_pram_ptr->tx_cnt, 0);
568 ep->empty_td = ep->td_base;
569 ep->conf_td = ep->td_base;
570
571 usb->actual_frame->frame_status = FRAME_TIMER_END_TRANSMISSION;
572
573 /* reset the event register */
574 out_be16(&usb->fhci->regs->usb_event, 0xffff);
575 /* enable the USB controller */
576 out_8(&usb->fhci->regs->usb_mod, mode | USB_MODE_EN);
577}
578
579/* handles Tx confirm and Tx error interrupt */
580void fhci_tx_conf_interrupt(struct fhci_usb *usb)
581{
582 fhci_td_transaction_confirm(usb);
583
584 /*
585 * Schedule another transaction to this frame only if we have
586 * already confirmed all transaction in the frame.
587 */
588 if (((fhci_get_sof_timer_count(usb) < usb->max_frame_usage) ||
589 (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION)) &&
590 (list_empty(&usb->actual_frame->tds_list)))
591 fhci_schedule_transactions(usb);
592}
593
594void fhci_host_transmit_actual_frame(struct fhci_usb *usb)
595{
596 u16 tb_ptr;
597 u16 td_status;
598 struct usb_td __iomem *td;
599 struct endpoint *ep = usb->ep0;
600
601 tb_ptr = in_be16(&ep->ep_pram_ptr->tx_bd_ptr);
602 td = cpm_muram_addr(tb_ptr);
603
604 if (in_be32(&td->buf_ptr) == DUMMY_BD_BUFFER) {
605 struct usb_td __iomem *old_td = td;
606
607 ep->already_pushed_dummy_bd = false;
608 td_status = in_be16(&td->status);
609 /* gets the next TD in the ring */
610 td = next_bd(ep->td_base, td, td_status);
611 tb_ptr = cpm_muram_offset(td);
612 out_be16(&ep->ep_pram_ptr->tx_bd_ptr, tb_ptr);
613
614 /* start transmit only if we have something in the TDs */
615 if (in_be16(&td->status) & TD_R)
616 out_8(&usb->fhci->regs->usb_comm, USB_CMD_STR_FIFO);
617
618 if (in_be32(&ep->conf_td->buf_ptr) == DUMMY_BD_BUFFER) {
619 out_be32(&old_td->buf_ptr, 0);
620 ep->conf_td = next_bd(ep->td_base, ep->conf_td,
621 td_status);
622 } else {
623 out_be32(&old_td->buf_ptr, DUMMY2_BD_BUFFER);
624 }
625 }
626}
diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h
new file mode 100644
index 000000000000..7116284ed21a
--- /dev/null
+++ b/drivers/usb/host/fhci.h
@@ -0,0 +1,607 @@
1/*
2 * Freescale QUICC Engine USB Host Controller Driver
3 *
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17
18#ifndef __FHCI_H
19#define __FHCI_H
20
21#include <linux/kernel.h>
22#include <linux/types.h>
23#include <linux/spinlock.h>
24#include <linux/interrupt.h>
25#include <linux/kfifo.h>
26#include <linux/io.h>
27#include <linux/usb.h>
28#include <asm/qe.h>
29#include "../core/hcd.h"
30
31#define USB_CLOCK 48000000
32
33#define FHCI_PRAM_SIZE 0x100
34
35#define MAX_EDS 32
36#define MAX_TDS 32
37
38
39/* CRC16 field size */
40#define CRC_SIZE 2
41
42/* USB protocol overhead for each frame transmitted from the host */
43#define PROTOCOL_OVERHEAD 7
44
45/* Packet structure, info field */
46#define PKT_PID_DATA0 0x80000000 /* PID - Data toggle zero */
47#define PKT_PID_DATA1 0x40000000 /* PID - Data toggle one */
48#define PKT_PID_SETUP 0x20000000 /* PID - Setup bit */
49#define PKT_SETUP_STATUS 0x10000000 /* Setup status bit */
50#define PKT_SETADDR_STATUS 0x08000000 /* Set address status bit */
51#define PKT_SET_HOST_LAST 0x04000000 /* Last data packet */
52#define PKT_HOST_DATA 0x02000000 /* Data packet */
53#define PKT_FIRST_IN_FRAME 0x01000000 /* First packet in the frame */
54#define PKT_TOKEN_FRAME 0x00800000 /* Token packet */
55#define PKT_ZLP 0x00400000 /* Zero length packet */
56#define PKT_IN_TOKEN_FRAME 0x00200000 /* IN token packet */
57#define PKT_OUT_TOKEN_FRAME 0x00100000 /* OUT token packet */
58#define PKT_SETUP_TOKEN_FRAME 0x00080000 /* SETUP token packet */
59#define PKT_STALL_FRAME 0x00040000 /* STALL packet */
60#define PKT_NACK_FRAME 0x00020000 /* NACK packet */
61#define PKT_NO_PID 0x00010000 /* No PID */
62#define PKT_NO_CRC 0x00008000 /* don't append CRC */
63#define PKT_HOST_COMMAND 0x00004000 /* Host command packet */
64#define PKT_DUMMY_PACKET 0x00002000 /* Dummy packet, used for mmm */
65#define PKT_LOW_SPEED_PACKET 0x00001000 /* Low-Speed packet */
66
67#define TRANS_OK (0)
68#define TRANS_INPROGRESS (-1)
69#define TRANS_DISCARD (-2)
70#define TRANS_FAIL (-3)
71
72#define PS_INT 0
73#define PS_DISCONNECTED 1
74#define PS_CONNECTED 2
75#define PS_READY 3
76#define PS_MISSING 4
77
78/* Transfer Descriptor status field */
79#define USB_TD_OK 0x00000000 /* TD transmited or received ok */
80#define USB_TD_INPROGRESS 0x80000000 /* TD is being transmitted */
81#define USB_TD_RX_ER_NONOCT 0x40000000 /* Tx Non Octet Aligned Packet */
82#define USB_TD_RX_ER_BITSTUFF 0x20000000 /* Frame Aborted-Received pkt */
83#define USB_TD_RX_ER_CRC 0x10000000 /* CRC error */
84#define USB_TD_RX_ER_OVERUN 0x08000000 /* Over - run occured */
85#define USB_TD_RX_ER_PID 0x04000000 /* wrong PID received */
86#define USB_TD_RX_DATA_UNDERUN 0x02000000 /* shorter than expected */
87#define USB_TD_RX_DATA_OVERUN 0x01000000 /* longer than expected */
88#define USB_TD_TX_ER_NAK 0x00800000 /* NAK handshake */
89#define USB_TD_TX_ER_STALL 0x00400000 /* STALL handshake */
90#define USB_TD_TX_ER_TIMEOUT 0x00200000 /* transmit time out */
91#define USB_TD_TX_ER_UNDERUN 0x00100000 /* transmit underrun */
92
93#define USB_TD_ERROR (USB_TD_RX_ER_NONOCT | USB_TD_RX_ER_BITSTUFF | \
94 USB_TD_RX_ER_CRC | USB_TD_RX_ER_OVERUN | USB_TD_RX_ER_PID | \
95 USB_TD_RX_DATA_UNDERUN | USB_TD_RX_DATA_OVERUN | \
96 USB_TD_TX_ER_NAK | USB_TD_TX_ER_STALL | \
97 USB_TD_TX_ER_TIMEOUT | USB_TD_TX_ER_UNDERUN)
98
99/* Transfer Descriptor toggle field */
100#define USB_TD_TOGGLE_DATA0 0
101#define USB_TD_TOGGLE_DATA1 1
102#define USB_TD_TOGGLE_CARRY 2
103
104/* #define MULTI_DATA_BUS */
105
106/* Bus mode register RBMR/TBMR */
107#define BUS_MODE_GBL 0x20 /* Global snooping */
108#define BUS_MODE_BO 0x18 /* Byte ordering */
109#define BUS_MODE_BO_BE 0x10 /* Byte ordering - Big-endian */
110#define BUS_MODE_DTB 0x02 /* Data bus */
111
112/* FHCI QE USB Register Description */
113
114/* USB Mode Register bit define */
115#define USB_MODE_EN 0x01
116#define USB_MODE_HOST 0x02
117#define USB_MODE_TEST 0x04
118#define USB_MODE_SFTE 0x08
119#define USB_MODE_RESUME 0x40
120#define USB_MODE_LSS 0x80
121
122/* USB Slave Address Register Mask */
123#define USB_SLVADDR_MASK 0x7F
124
125/* USB Endpoint register define */
126#define USB_EPNUM_MASK 0xF000
127#define USB_EPNUM_SHIFT 12
128
129#define USB_TRANS_MODE_SHIFT 8
130#define USB_TRANS_CTR 0x0000
131#define USB_TRANS_INT 0x0100
132#define USB_TRANS_BULK 0x0200
133#define USB_TRANS_ISO 0x0300
134
135#define USB_EP_MF 0x0020
136#define USB_EP_RTE 0x0010
137
138#define USB_THS_SHIFT 2
139#define USB_THS_MASK 0x000c
140#define USB_THS_NORMAL 0x0
141#define USB_THS_IGNORE_IN 0x0004
142#define USB_THS_NACK 0x0008
143#define USB_THS_STALL 0x000c
144
145#define USB_RHS_SHIFT 0
146#define USB_RHS_MASK 0x0003
147#define USB_RHS_NORMAL 0x0
148#define USB_RHS_IGNORE_OUT 0x0001
149#define USB_RHS_NACK 0x0002
150#define USB_RHS_STALL 0x0003
151
152#define USB_RTHS_MASK 0x000f
153
154/* USB Command Register define */
155#define USB_CMD_STR_FIFO 0x80
156#define USB_CMD_FLUSH_FIFO 0x40
157#define USB_CMD_ISFT 0x20
158#define USB_CMD_DSFT 0x10
159#define USB_CMD_EP_MASK 0x03
160
161/* USB Event and Mask Register define */
162#define USB_E_MSF_MASK 0x0800
163#define USB_E_SFT_MASK 0x0400
164#define USB_E_RESET_MASK 0x0200
165#define USB_E_IDLE_MASK 0x0100
166#define USB_E_TXE4_MASK 0x0080
167#define USB_E_TXE3_MASK 0x0040
168#define USB_E_TXE2_MASK 0x0020
169#define USB_E_TXE1_MASK 0x0010
170#define USB_E_SOF_MASK 0x0008
171#define USB_E_BSY_MASK 0x0004
172#define USB_E_TXB_MASK 0x0002
173#define USB_E_RXB_MASK 0x0001
174
175/* Freescale USB Host controller registers */
176struct fhci_regs {
177 u8 usb_mod; /* mode register */
178 u8 usb_addr; /* address register */
179 u8 usb_comm; /* command register */
180 u8 reserved1[1];
181 __be16 usb_ep[4]; /* endpoint register */
182 u8 reserved2[4];
183 __be16 usb_event; /* event register */
184 u8 reserved3[2];
185 __be16 usb_mask; /* mask register */
186 u8 reserved4[1];
187 u8 usb_status; /* status register */
188 __be16 usb_sof_tmr; /* Start Of Frame timer */
189 u8 reserved5[2];
190 __be16 usb_frame_num; /* frame number register */
191 u8 reserved6[1];
192};
193
194/* Freescale USB HOST */
195struct fhci_pram {
196 __be16 ep_ptr[4]; /* Endpoint porter reg */
197 __be32 rx_state; /* Rx internal state */
198 __be32 rx_ptr; /* Rx internal data pointer */
199 __be16 frame_num; /* Frame number */
200 __be16 rx_cnt; /* Rx byte count */
201 __be32 rx_temp; /* Rx temp */
202 __be32 rx_data_temp; /* Rx data temp */
203 __be16 rx_u_ptr; /* Rx microcode return address temp */
204 u8 reserved1[2]; /* reserved area */
205 __be32 sof_tbl; /* SOF lookup table pointer */
206 u8 sof_u_crc_temp; /* SOF micorcode CRC5 temp reg */
207 u8 reserved2[0xdb];
208};
209
210/* Freescale USB Endpoint*/
211struct fhci_ep_pram {
212 __be16 rx_base; /* Rx BD base address */
213 __be16 tx_base; /* Tx BD base address */
214 u8 rx_func_code; /* Rx function code */
215 u8 tx_func_code; /* Tx function code */
216 __be16 rx_buff_len; /* Rx buffer length */
217 __be16 rx_bd_ptr; /* Rx BD pointer */
218 __be16 tx_bd_ptr; /* Tx BD pointer */
219 __be32 tx_state; /* Tx internal state */
220 __be32 tx_ptr; /* Tx internal data pointer */
221 __be16 tx_crc; /* temp transmit CRC */
222 __be16 tx_cnt; /* Tx byte count */
223 __be32 tx_temp; /* Tx temp */
224 __be16 tx_u_ptr; /* Tx microcode return address temp */
225 __be16 reserved;
226};
227
228struct fhci_controller_list {
229 struct list_head ctrl_list; /* control endpoints */
230 struct list_head bulk_list; /* bulk endpoints */
231 struct list_head iso_list; /* isochronous endpoints */
232 struct list_head intr_list; /* interruput endpoints */
233 struct list_head done_list; /* done transfers */
234};
235
236struct virtual_root_hub {
237 int dev_num; /* USB address of the root hub */
238 u32 feature; /* indicates what feature has been set */
239 struct usb_hub_status hub;
240 struct usb_port_status port;
241};
242
243enum fhci_gpios {
244 GPIO_USBOE = 0,
245 GPIO_USBTP,
246 GPIO_USBTN,
247 GPIO_USBRP,
248 GPIO_USBRN,
249 /* these are optional */
250 GPIO_SPEED,
251 GPIO_POWER,
252 NUM_GPIOS,
253};
254
255enum fhci_pins {
256 PIN_USBOE = 0,
257 PIN_USBTP,
258 PIN_USBTN,
259 NUM_PINS,
260};
261
262struct fhci_hcd {
263 enum qe_clock fullspeed_clk;
264 enum qe_clock lowspeed_clk;
265 struct qe_pin *pins[NUM_PINS];
266 int gpios[NUM_GPIOS];
267 bool alow_gpios[NUM_GPIOS];
268
269 struct fhci_regs __iomem *regs; /* I/O memory used to communicate */
270 struct fhci_pram __iomem *pram; /* Parameter RAM */
271 struct gtm_timer *timer;
272
273 spinlock_t lock;
274 struct fhci_usb *usb_lld; /* Low-level driver */
275 struct virtual_root_hub *vroot_hub; /* the virtual root hub */
276 int active_urbs;
277 struct fhci_controller_list *hc_list;
278 struct tasklet_struct *process_done_task; /* tasklet for done list */
279
280 struct list_head empty_eds;
281 struct list_head empty_tds;
282
283#ifdef CONFIG_FHCI_DEBUG
284 int usb_irq_stat[13];
285 struct dentry *dfs_root;
286 struct dentry *dfs_regs;
287 struct dentry *dfs_irq_stat;
288#endif
289};
290
291#define USB_FRAME_USAGE 90
292#define FRAME_TIME_USAGE (USB_FRAME_USAGE*10) /* frame time usage */
293#define SW_FIX_TIME_BETWEEN_TRANSACTION 150 /* SW */
294#define MAX_BYTES_PER_FRAME (USB_FRAME_USAGE*15)
295#define MAX_PERIODIC_FRAME_USAGE 90
296
297/* transaction type */
298enum fhci_ta_type {
299 FHCI_TA_IN = 0, /* input transaction */
300 FHCI_TA_OUT, /* output transaction */
301 FHCI_TA_SETUP, /* setup transaction */
302};
303
304/* transfer mode */
305enum fhci_tf_mode {
306 FHCI_TF_CTRL = 0,
307 FHCI_TF_ISO,
308 FHCI_TF_BULK,
309 FHCI_TF_INTR,
310};
311
312enum fhci_speed {
313 FHCI_FULL_SPEED,
314 FHCI_LOW_SPEED,
315};
316
317/* endpoint state */
318enum fhci_ed_state {
319 FHCI_ED_NEW = 0, /* pipe is new */
320 FHCI_ED_OPER, /* pipe is operating */
321 FHCI_ED_URB_DEL, /* pipe is in hold because urb is being deleted */
322 FHCI_ED_SKIP, /* skip this pipe */
323 FHCI_ED_HALTED, /* pipe is halted */
324};
325
326enum fhci_port_status {
327 FHCI_PORT_POWER_OFF = 0,
328 FHCI_PORT_DISABLED,
329 FHCI_PORT_DISCONNECTING,
330 FHCI_PORT_WAITING, /* waiting for connection */
331 FHCI_PORT_FULL, /* full speed connected */
332 FHCI_PORT_LOW, /* low speed connected */
333};
334
335enum fhci_mem_alloc {
336 MEM_CACHABLE_SYS = 0x00000001, /* primary DDR,cachable */
337 MEM_NOCACHE_SYS = 0x00000004, /* primary DDR,non-cachable */
338 MEM_SECONDARY = 0x00000002, /* either secondary DDR or SDRAM */
339 MEM_PRAM = 0x00000008, /* multi-user RAM identifier */
340};
341
342/* USB default parameters*/
343#define DEFAULT_RING_LEN 8
344#define DEFAULT_DATA_MEM MEM_CACHABLE_SYS
345
346struct ed {
347 u8 dev_addr; /* device address */
348 u8 ep_addr; /* endpoint address */
349 enum fhci_tf_mode mode; /* USB transfer mode */
350 enum fhci_speed speed;
351 unsigned int max_pkt_size;
352 enum fhci_ed_state state;
353 struct list_head td_list; /* a list of all queued TD to this pipe */
354 struct list_head node;
355
356 /* read only parameters, should be cleared upon initialization */
357 u8 toggle_carry; /* toggle carry from the last TD submitted */
358 u32 last_iso; /* time stamp of last queued ISO transfer */
359 struct td *td_head; /* a pointer to the current TD handled */
360};
361
362struct td {
363 void *data; /* a pointer to the data buffer */
364 unsigned int len; /* length of the data to be submitted */
365 unsigned int actual_len; /* actual bytes transfered on this td */
366 enum fhci_ta_type type; /* transaction type */
367 u8 toggle; /* toggle for next trans. within this TD */
368 u16 iso_index; /* ISO transaction index */
369 u16 start_frame; /* start frame time stamp */
370 u16 interval; /* interval between trans. (for ISO/Intr) */
371 u32 status; /* status of the TD */
372 struct ed *ed; /* a handle to the corresponding ED */
373 struct urb *urb; /* a handle to the corresponding URB */
374 bool ioc; /* Inform On Completion */
375 struct list_head node;
376
377 /* read only parameters should be cleared upon initialization */
378 struct packet *pkt;
379 int nak_cnt;
380 int error_cnt;
381 struct list_head frame_lh;
382};
383
384struct packet {
385 u8 *data; /* packet data */
386 u32 len; /* packet length */
387 u32 status; /* status of the packet - equivalent to the status
388 * field for the corresponding structure td */
389 u32 info; /* packet information */
390 void __iomem *priv_data; /* private data of the driver (TDs or BDs) */
391};
392
393/* struct for each URB */
394#define URB_INPROGRESS 0
395#define URB_DEL 1
396
397/* URB states (state field) */
398#define US_BULK 0
399#define US_BULK0 1
400
401/* three setup states */
402#define US_CTRL_SETUP 2
403#define US_CTRL_DATA 1
404#define US_CTRL_ACK 0
405
406#define EP_ZERO 0
407
408struct urb_priv {
409 int num_of_tds;
410 int tds_cnt;
411 int state;
412
413 struct td **tds;
414 struct ed *ed;
415 struct timer_list time_out;
416};
417
418struct endpoint {
419 /* Pointer to ep parameter RAM */
420 struct fhci_ep_pram __iomem *ep_pram_ptr;
421
422 /* Host transactions */
423 struct usb_td __iomem *td_base; /* first TD in the ring */
424 struct usb_td __iomem *conf_td; /* next TD for confirm after transac */
425 struct usb_td __iomem *empty_td;/* next TD for new transaction req. */
426 struct kfifo *empty_frame_Q; /* Empty frames list to use */
427 struct kfifo *conf_frame_Q; /* frames passed to TDs,waiting for tx */
428 struct kfifo *dummy_packets_Q;/* dummy packets for the CRC overun */
429
430 bool already_pushed_dummy_bd;
431};
432
433/* struct for each 1mSec frame time */
434#define FRAME_IS_TRANSMITTED 0x00
435#define FRAME_TIMER_END_TRANSMISSION 0x01
436#define FRAME_DATA_END_TRANSMISSION 0x02
437#define FRAME_END_TRANSMISSION 0x03
438#define FRAME_IS_PREPARED 0x04
439
440struct fhci_time_frame {
441 u16 frame_num; /* frame number */
442 u16 total_bytes; /* total bytes submitted within this frame */
443 u8 frame_status; /* flag that indicates to stop fill this frame */
444 struct list_head tds_list; /* all tds of this frame */
445};
446
447/* internal driver structure*/
448struct fhci_usb {
449 u16 saved_msk; /* saving of the USB mask register */
450 struct endpoint *ep0; /* pointer for endpoint0 structure */
451 int intr_nesting_cnt; /* interrupt nesting counter */
452 u16 max_frame_usage; /* max frame time usage,in micro-sec */
453 u16 max_bytes_per_frame; /* max byte can be tx in one time frame */
454 u32 sw_transaction_time; /* sw complete trans time,in micro-sec */
455 struct fhci_time_frame *actual_frame;
456 struct fhci_controller_list *hc_list; /* main structure for hc */
457 struct virtual_root_hub *vroot_hub;
458 enum fhci_port_status port_status; /* v_rh port status */
459
460 u32 (*transfer_confirm)(struct fhci_hcd *fhci);
461
462 struct fhci_hcd *fhci;
463};
464
465/*
466 * Various helpers and prototypes below.
467 */
468
469static inline u16 get_frame_num(struct fhci_hcd *fhci)
470{
471 return in_be16(&fhci->pram->frame_num) & 0x07ff;
472}
473
474#define fhci_dbg(fhci, fmt, args...) \
475 dev_dbg(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
476#define fhci_vdbg(fhci, fmt, args...) \
477 dev_vdbg(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
478#define fhci_err(fhci, fmt, args...) \
479 dev_err(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
480#define fhci_info(fhci, fmt, args...) \
481 dev_info(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
482#define fhci_warn(fhci, fmt, args...) \
483 dev_warn(fhci_to_hcd(fhci)->self.controller, fmt, ##args)
484
485static inline struct fhci_hcd *hcd_to_fhci(struct usb_hcd *hcd)
486{
487 return (struct fhci_hcd *)hcd->hcd_priv;
488}
489
490static inline struct usb_hcd *fhci_to_hcd(struct fhci_hcd *fhci)
491{
492 return container_of((void *)fhci, struct usb_hcd, hcd_priv);
493}
494
495/* fifo of pointers */
496static inline struct kfifo *cq_new(int size)
497{
498 return kfifo_alloc(size * sizeof(void *), GFP_KERNEL, NULL);
499}
500
501static inline void cq_delete(struct kfifo *kfifo)
502{
503 kfifo_free(kfifo);
504}
505
506static inline unsigned int cq_howmany(struct kfifo *kfifo)
507{
508 return __kfifo_len(kfifo) / sizeof(void *);
509}
510
511static inline int cq_put(struct kfifo *kfifo, void *p)
512{
513 return __kfifo_put(kfifo, (void *)&p, sizeof(p));
514}
515
516static inline void *cq_get(struct kfifo *kfifo)
517{
518 void *p = NULL;
519
520 __kfifo_get(kfifo, (void *)&p, sizeof(p));
521 return p;
522}
523
524/* fhci-hcd.c */
525void fhci_start_sof_timer(struct fhci_hcd *fhci);
526void fhci_stop_sof_timer(struct fhci_hcd *fhci);
527u16 fhci_get_sof_timer_count(struct fhci_usb *usb);
528void fhci_usb_enable_interrupt(struct fhci_usb *usb);
529void fhci_usb_disable_interrupt(struct fhci_usb *usb);
530int fhci_ioports_check_bus_state(struct fhci_hcd *fhci);
531
532/* fhci-mem.c */
533void fhci_recycle_empty_td(struct fhci_hcd *fhci, struct td *td);
534void fhci_recycle_empty_ed(struct fhci_hcd *fhci, struct ed *ed);
535struct ed *fhci_get_empty_ed(struct fhci_hcd *fhci);
536struct td *fhci_td_fill(struct fhci_hcd *fhci, struct urb *urb,
537 struct urb_priv *urb_priv, struct ed *ed, u16 index,
538 enum fhci_ta_type type, int toggle, u8 *data, u32 len,
539 u16 interval, u16 start_frame, bool ioc);
540void fhci_add_tds_to_ed(struct ed *ed, struct td **td_list, int number);
541
542/* fhci-hub.c */
543void fhci_config_transceiver(struct fhci_hcd *fhci,
544 enum fhci_port_status status);
545void fhci_port_disable(struct fhci_hcd *fhci);
546void fhci_port_enable(void *lld);
547void fhci_io_port_generate_reset(struct fhci_hcd *fhci);
548void fhci_port_reset(void *lld);
549int fhci_hub_status_data(struct usb_hcd *hcd, char *buf);
550int fhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
551 u16 wIndex, char *buf, u16 wLength);
552
553/* fhci-tds.c */
554void fhci_flush_bds(struct fhci_usb *usb);
555void fhci_flush_actual_frame(struct fhci_usb *usb);
556u32 fhci_host_transaction(struct fhci_usb *usb, struct packet *pkt,
557 enum fhci_ta_type trans_type, u8 dest_addr,
558 u8 dest_ep, enum fhci_tf_mode trans_mode,
559 enum fhci_speed dest_speed, u8 data_toggle);
560void fhci_host_transmit_actual_frame(struct fhci_usb *usb);
561void fhci_tx_conf_interrupt(struct fhci_usb *usb);
562void fhci_push_dummy_bd(struct endpoint *ep);
563u32 fhci_create_ep(struct fhci_usb *usb, enum fhci_mem_alloc data_mem,
564 u32 ring_len);
565void fhci_init_ep_registers(struct fhci_usb *usb,
566 struct endpoint *ep,
567 enum fhci_mem_alloc data_mem);
568void fhci_ep0_free(struct fhci_usb *usb);
569
570/* fhci-sched.c */
571extern struct tasklet_struct fhci_tasklet;
572void fhci_transaction_confirm(struct fhci_usb *usb, struct packet *pkt);
573void fhci_flush_all_transmissions(struct fhci_usb *usb);
574void fhci_schedule_transactions(struct fhci_usb *usb);
575void fhci_device_connected_interrupt(struct fhci_hcd *fhci);
576void fhci_device_disconnected_interrupt(struct fhci_hcd *fhci);
577void fhci_queue_urb(struct fhci_hcd *fhci, struct urb *urb);
578u32 fhci_transfer_confirm_callback(struct fhci_hcd *fhci);
579irqreturn_t fhci_irq(struct usb_hcd *hcd);
580irqreturn_t fhci_frame_limit_timer_irq(int irq, void *_hcd);
581
582/* fhci-q.h */
583void fhci_urb_complete_free(struct fhci_hcd *fhci, struct urb *urb);
584struct td *fhci_remove_td_from_ed(struct ed *ed);
585struct td *fhci_remove_td_from_frame(struct fhci_time_frame *frame);
586void fhci_move_td_from_ed_to_done_list(struct fhci_usb *usb, struct ed *ed);
587struct td *fhci_peek_td_from_frame(struct fhci_time_frame *frame);
588void fhci_add_td_to_frame(struct fhci_time_frame *frame, struct td *td);
589struct td *fhci_remove_td_from_done_list(struct fhci_controller_list *p_list);
590void fhci_done_td(struct urb *urb, struct td *td);
591void fhci_del_ed_list(struct fhci_hcd *fhci, struct ed *ed);
592
593#ifdef CONFIG_FHCI_DEBUG
594
595void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er);
596void fhci_dfs_destroy(struct fhci_hcd *fhci);
597void fhci_dfs_create(struct fhci_hcd *fhci);
598
599#else
600
601static inline void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er) {}
602static inline void fhci_dfs_destroy(struct fhci_hcd *fhci) {}
603static inline void fhci_dfs_create(struct fhci_hcd *fhci) {}
604
605#endif /* CONFIG_FHCI_DEBUG */
606
607#endif /* __FHCI_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 10:06:52 -0500