1 /***************************************************************************
3 Copyright (c) 2005-2009, Broadcom Corporation.
5 This driver is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 2 of the License.
9 This driver is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this driver. If not, see <http://www.gnu.org/licenses/>.
16 ***************************************************************************/
18 #include <linux/version.h>
19 #include <linux/slab.h>
21 #include "crystalhd_lnx.h"
23 static struct class *crystalhd_class
;
25 static struct crystalhd_adp
*g_adp_info
;
27 static irqreturn_t
chd_dec_isr(int irq
, void *arg
)
29 struct crystalhd_adp
*adp
= (struct crystalhd_adp
*) arg
;
32 rc
= crystalhd_cmd_interrupt(&adp
->cmds
);
34 return IRQ_RETVAL(rc
);
37 static int chd_dec_enable_int(struct crystalhd_adp
*adp
)
41 if (!adp
|| !adp
->pdev
) {
42 BCMLOG_ERR("Invalid arg!!\n");
46 if (adp
->pdev
->msi_enabled
)
49 adp
->msi
= pci_enable_msi(adp
->pdev
);
51 rc
= request_irq(adp
->pdev
->irq
, chd_dec_isr
, IRQF_SHARED
,
52 adp
->name
, (void *)adp
);
54 BCMLOG_ERR("Interrupt request failed.. \n");
55 pci_disable_msi(adp
->pdev
);
61 static int chd_dec_disable_int(struct crystalhd_adp
*adp
)
63 if (!adp
|| !adp
->pdev
) {
64 BCMLOG_ERR("Invalid arg!!\n");
68 free_irq(adp
->pdev
->irq
, adp
);
71 pci_disable_msi(adp
->pdev
);
76 crystalhd_ioctl_data
*chd_dec_alloc_iodata(struct crystalhd_adp
*adp
, bool isr
)
78 unsigned long flags
= 0;
79 crystalhd_ioctl_data
*temp
;
84 spin_lock_irqsave(&adp
->lock
, flags
);
86 temp
= adp
->idata_free_head
;
88 adp
->idata_free_head
= adp
->idata_free_head
->next
;
89 memset(temp
, 0, sizeof(*temp
));
92 spin_unlock_irqrestore(&adp
->lock
, flags
);
96 void chd_dec_free_iodata(struct crystalhd_adp
*adp
, crystalhd_ioctl_data
*iodata
,
99 unsigned long flags
= 0;
104 spin_lock_irqsave(&adp
->lock
, flags
);
105 iodata
->next
= adp
->idata_free_head
;
106 adp
->idata_free_head
= iodata
;
107 spin_unlock_irqrestore(&adp
->lock
, flags
);
110 static inline int crystalhd_user_data(unsigned long ud
, void *dr
, int size
, int set
)
115 BCMLOG_ERR("Invalid arg \n");
120 rc
= copy_to_user((void *)ud
, dr
, size
);
122 rc
= copy_from_user(dr
, (void *)ud
, size
);
125 BCMLOG_ERR("Invalid args for command \n");
132 static int chd_dec_fetch_cdata(struct crystalhd_adp
*adp
, crystalhd_ioctl_data
*io
,
133 uint32_t m_sz
, unsigned long ua
)
135 unsigned long ua_off
;
138 if (!adp
|| !io
|| !ua
|| !m_sz
) {
139 BCMLOG_ERR("Invalid Arg!!\n");
143 io
->add_cdata
= vmalloc(m_sz
);
144 if (!io
->add_cdata
) {
145 BCMLOG_ERR("kalloc fail for sz:%x\n", m_sz
);
149 io
->add_cdata_sz
= m_sz
;
150 ua_off
= ua
+ sizeof(io
->udata
);
151 rc
= crystalhd_user_data(ua_off
, io
->add_cdata
, io
->add_cdata_sz
, 0);
153 BCMLOG_ERR("failed to pull add_cdata sz:%x ua_off:%x\n",
154 io
->add_cdata_sz
, (unsigned int)ua_off
);
156 kfree(io
->add_cdata
);
157 io
->add_cdata
= NULL
;
165 static int chd_dec_release_cdata(struct crystalhd_adp
*adp
,
166 crystalhd_ioctl_data
*io
, unsigned long ua
)
168 unsigned long ua_off
;
171 if (!adp
|| !io
|| !ua
) {
172 BCMLOG_ERR("Invalid Arg!!\n");
176 if (io
->cmd
!= BCM_IOC_FW_DOWNLOAD
) {
177 ua_off
= ua
+ sizeof(io
->udata
);
178 rc
= crystalhd_user_data(ua_off
, io
->add_cdata
,
179 io
->add_cdata_sz
, 1);
181 BCMLOG_ERR("failed to push add_cdata sz:%x ua_off:%x\n",
182 io
->add_cdata_sz
, (unsigned int)ua_off
);
188 vfree(io
->add_cdata
);
189 io
->add_cdata
= NULL
;
195 static int chd_dec_proc_user_data(struct crystalhd_adp
*adp
,
196 crystalhd_ioctl_data
*io
,
197 unsigned long ua
, int set
)
202 if (!adp
|| !io
|| !ua
) {
203 BCMLOG_ERR("Invalid Arg!!\n");
207 rc
= crystalhd_user_data(ua
, &io
->udata
, sizeof(io
->udata
), set
);
209 BCMLOG_ERR("failed to %s iodata \n", (set
? "set" : "get"));
216 case BCM_IOC_FW_DOWNLOAD
:
217 m_sz
= io
->udata
.u
.devMem
.NumDwords
* 4;
219 rc
= chd_dec_release_cdata(adp
, io
, ua
);
221 rc
= chd_dec_fetch_cdata(adp
, io
, m_sz
, ua
);
230 static int chd_dec_api_cmd(struct crystalhd_adp
*adp
, unsigned long ua
,
231 uint32_t uid
, uint32_t cmd
, crystalhd_cmd_proc func
)
234 crystalhd_ioctl_data
*temp
;
235 BC_STATUS sts
= BC_STS_SUCCESS
;
237 temp
= chd_dec_alloc_iodata(adp
, 0);
239 BCMLOG_ERR("Failed to get iodata..\n");
246 rc
= chd_dec_proc_user_data(adp
, temp
, ua
, 0);
248 sts
= func(&adp
->cmds
, temp
);
249 if (sts
== BC_STS_PENDING
)
250 sts
= BC_STS_NOT_IMPL
;
251 temp
->udata
.RetSts
= sts
;
252 rc
= chd_dec_proc_user_data(adp
, temp
, ua
, 1);
256 chd_dec_free_iodata(adp
, temp
, 0);
264 static int chd_dec_ioctl(struct inode
*in
, struct file
*fd
,
265 unsigned int cmd
, unsigned long ua
)
267 struct crystalhd_adp
*adp
= chd_get_adp();
268 crystalhd_cmd_proc cproc
;
269 struct crystalhd_user
*uc
;
272 BCMLOG_ERR("Invalid adp\n");
276 uc
= (struct crystalhd_user
*)fd
->private_data
;
278 BCMLOG_ERR("Failed to get uc\n");
282 cproc
= crystalhd_get_cmd_proc(&adp
->cmds
, cmd
, uc
);
284 BCMLOG_ERR("Unhandled command: %d\n", cmd
);
288 return chd_dec_api_cmd(adp
, ua
, uc
->uid
, cmd
, cproc
);
291 static int chd_dec_open(struct inode
*in
, struct file
*fd
)
293 struct crystalhd_adp
*adp
= chd_get_adp();
295 BC_STATUS sts
= BC_STS_SUCCESS
;
296 struct crystalhd_user
*uc
= NULL
;
300 BCMLOG_ERR("Invalid adp\n");
304 if (adp
->cfg_users
>= BC_LINK_MAX_OPENS
) {
305 BCMLOG(BCMLOG_INFO
, "Already in use.%d\n", adp
->cfg_users
);
309 sts
= crystalhd_user_open(&adp
->cmds
, &uc
);
310 if (sts
!= BC_STS_SUCCESS
) {
311 BCMLOG_ERR("cmd_user_open - %d \n", sts
);
317 fd
->private_data
= uc
;
322 static int chd_dec_close(struct inode
*in
, struct file
*fd
)
324 struct crystalhd_adp
*adp
= chd_get_adp();
325 struct crystalhd_user
*uc
;
329 BCMLOG_ERR("Invalid adp \n");
333 uc
= (struct crystalhd_user
*)fd
->private_data
;
335 BCMLOG_ERR("Failed to get uc\n");
339 crystalhd_user_close(&adp
->cmds
, uc
);
346 static const struct file_operations chd_dec_fops
= {
347 .owner
= THIS_MODULE
,
348 .ioctl
= chd_dec_ioctl
,
349 .open
= chd_dec_open
,
350 .release
= chd_dec_close
,
353 static int __devinit
chd_dec_init_chdev(struct crystalhd_adp
*adp
)
355 crystalhd_ioctl_data
*temp
;
357 int rc
= -ENODEV
, i
= 0;
362 adp
->chd_dec_major
= register_chrdev(0, CRYSTALHD_API_NAME
,
364 if (adp
->chd_dec_major
< 0) {
365 BCMLOG_ERR("Failed to create config dev\n");
366 rc
= adp
->chd_dec_major
;
370 /* register crystalhd class */
371 crystalhd_class
= class_create(THIS_MODULE
, "crystalhd");
372 if (IS_ERR(crystalhd_class
)) {
373 BCMLOG_ERR("failed to create class\n");
377 dev
= device_create(crystalhd_class
, NULL
, MKDEV(adp
->chd_dec_major
, 0),
380 BCMLOG_ERR("failed to create device\n");
381 goto device_create_fail
;
384 rc
= crystalhd_create_elem_pool(adp
, BC_LINK_ELEM_POOL_SZ
);
386 BCMLOG_ERR("failed to create device\n");
390 /* Allocate general purpose ioctl pool. */
391 for (i
= 0; i
< CHD_IODATA_POOL_SZ
; i
++) {
392 /* FIXME: jarod: why atomic? */
393 temp
= kzalloc(sizeof(crystalhd_ioctl_data
), GFP_ATOMIC
);
395 BCMLOG_ERR("ioctl data pool kzalloc failed\n");
399 /* Add to global pool.. */
400 chd_dec_free_iodata(adp
, temp
, 0);
406 crystalhd_delete_elem_pool(adp
);
408 device_destroy(crystalhd_class
, MKDEV(adp
->chd_dec_major
, 0));
410 class_destroy(crystalhd_class
);
415 static void __devexit
chd_dec_release_chdev(struct crystalhd_adp
*adp
)
417 crystalhd_ioctl_data
*temp
= NULL
;
421 if (adp
->chd_dec_major
> 0) {
422 /* unregister crystalhd class */
423 device_destroy(crystalhd_class
, MKDEV(adp
->chd_dec_major
, 0));
424 unregister_chrdev(adp
->chd_dec_major
, CRYSTALHD_API_NAME
);
425 BCMLOG(BCMLOG_INFO
, "released api device - %d\n",
427 class_destroy(crystalhd_class
);
429 adp
->chd_dec_major
= 0;
431 /* Clear iodata pool.. */
433 temp
= chd_dec_alloc_iodata(adp
, 0);
438 crystalhd_delete_elem_pool(adp
);
441 static int __devinit
chd_pci_reserve_mem(struct crystalhd_adp
*pinfo
)
444 unsigned long bar2
= pci_resource_start(pinfo
->pdev
, 2);
445 uint32_t mem_len
= pci_resource_len(pinfo
->pdev
, 2);
446 unsigned long bar0
= pci_resource_start(pinfo
->pdev
, 0);
447 uint32_t i2o_len
= pci_resource_len(pinfo
->pdev
, 0);
449 BCMLOG(BCMLOG_SSTEP
, "bar2:0x%lx-0x%08x bar0:0x%lx-0x%08x\n",
450 bar2
, mem_len
, bar0
, i2o_len
);
452 rc
= check_mem_region(bar2
, mem_len
);
454 BCMLOG_ERR("No valid mem region...\n");
458 pinfo
->addr
= ioremap_nocache(bar2
, mem_len
);
460 BCMLOG_ERR("Failed to remap mem region...\n");
464 pinfo
->pci_mem_start
= bar2
;
465 pinfo
->pci_mem_len
= mem_len
;
467 rc
= check_mem_region(bar0
, i2o_len
);
469 BCMLOG_ERR("No valid mem region...\n");
473 pinfo
->i2o_addr
= ioremap_nocache(bar0
, i2o_len
);
474 if (!pinfo
->i2o_addr
) {
475 BCMLOG_ERR("Failed to remap mem region...\n");
479 pinfo
->pci_i2o_start
= bar0
;
480 pinfo
->pci_i2o_len
= i2o_len
;
482 rc
= pci_request_regions(pinfo
->pdev
, pinfo
->name
);
484 BCMLOG_ERR("Region request failed: %d\n", rc
);
488 BCMLOG(BCMLOG_SSTEP
, "Mapped addr:0x%08lx i2o_addr:0x%08lx\n",
489 (unsigned long)pinfo
->addr
, (unsigned long)pinfo
->i2o_addr
);
494 static void __devexit
chd_pci_release_mem(struct crystalhd_adp
*pinfo
)
500 iounmap(pinfo
->addr
);
503 iounmap(pinfo
->i2o_addr
);
505 pci_release_regions(pinfo
->pdev
);
509 static void __devexit
chd_dec_pci_remove(struct pci_dev
*pdev
)
511 struct crystalhd_adp
*pinfo
;
512 BC_STATUS sts
= BC_STS_SUCCESS
;
516 pinfo
= (struct crystalhd_adp
*) pci_get_drvdata(pdev
);
518 BCMLOG_ERR("could not get adp\n");
522 sts
= crystalhd_delete_cmd_context(&pinfo
->cmds
);
523 if (sts
!= BC_STS_SUCCESS
)
524 BCMLOG_ERR("cmd delete :%d \n", sts
);
526 chd_dec_release_chdev(pinfo
);
528 chd_dec_disable_int(pinfo
);
530 chd_pci_release_mem(pinfo
);
531 pci_disable_device(pinfo
->pdev
);
537 static int __devinit
chd_dec_pci_probe(struct pci_dev
*pdev
,
538 const struct pci_device_id
*entry
)
540 struct crystalhd_adp
*pinfo
;
542 BC_STATUS sts
= BC_STS_SUCCESS
;
544 BCMLOG(BCMLOG_DBG
, "PCI_INFO: Vendor:0x%04x Device:0x%04x "
545 "s_vendor:0x%04x s_device: 0x%04x\n",
546 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
547 pdev
->subsystem_device
);
549 /* FIXME: jarod: why atomic? */
550 pinfo
= kzalloc(sizeof(struct crystalhd_adp
), GFP_ATOMIC
);
552 BCMLOG_ERR("Failed to allocate memory\n");
558 rc
= pci_enable_device(pdev
);
560 BCMLOG_ERR("Failed to enable PCI device\n");
564 snprintf(pinfo
->name
, 31, "crystalhd_pci_e:%d:%d:%d",
565 pdev
->bus
->number
, PCI_SLOT(pdev
->devfn
),
566 PCI_FUNC(pdev
->devfn
));
568 rc
= chd_pci_reserve_mem(pinfo
);
570 BCMLOG_ERR("Failed to setup memory regions.\n");
575 pinfo
->drv_data
= entry
->driver_data
;
577 /* Setup adapter level lock.. */
578 spin_lock_init(&pinfo
->lock
);
580 /* setup api stuff.. */
581 chd_dec_init_chdev(pinfo
);
582 rc
= chd_dec_enable_int(pinfo
);
584 BCMLOG_ERR("_enable_int err:%d \n", rc
);
585 pci_disable_device(pdev
);
589 /* Set dma mask... */
590 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64))) {
591 pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64));
593 } else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32))) {
594 pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
597 BCMLOG_ERR("Unabled to setup DMA %d\n", rc
);
598 pci_disable_device(pdev
);
602 sts
= crystalhd_setup_cmd_context(&pinfo
->cmds
, pinfo
);
603 if (sts
!= BC_STS_SUCCESS
) {
604 BCMLOG_ERR("cmd setup :%d \n", sts
);
605 pci_disable_device(pdev
);
609 pci_set_master(pdev
);
611 pci_set_drvdata(pdev
, pinfo
);
619 int chd_dec_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
621 struct crystalhd_adp
*adp
;
622 crystalhd_ioctl_data
*temp
;
623 BC_STATUS sts
= BC_STS_SUCCESS
;
625 adp
= (struct crystalhd_adp
*)pci_get_drvdata(pdev
);
627 BCMLOG_ERR("could not get adp\n");
631 temp
= chd_dec_alloc_iodata(adp
, false);
633 BCMLOG_ERR("could not get ioctl data\n");
637 sts
= crystalhd_suspend(&adp
->cmds
, temp
);
638 if (sts
!= BC_STS_SUCCESS
) {
639 BCMLOG_ERR("BCM70012 Suspend %d\n", sts
);
643 chd_dec_free_iodata(adp
, temp
, false);
644 chd_dec_disable_int(adp
);
645 pci_save_state(pdev
);
647 /* Disable IO/bus master/irq router */
648 pci_disable_device(pdev
);
649 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
653 int chd_dec_pci_resume(struct pci_dev
*pdev
)
655 struct crystalhd_adp
*adp
;
656 BC_STATUS sts
= BC_STS_SUCCESS
;
659 adp
= (struct crystalhd_adp
*)pci_get_drvdata(pdev
);
661 BCMLOG_ERR("could not get adp\n");
665 pci_set_power_state(pdev
, PCI_D0
);
666 pci_restore_state(pdev
);
668 /* device's irq possibly is changed, driver should take care */
669 if (pci_enable_device(pdev
)) {
670 BCMLOG_ERR("Failed to enable PCI device\n");
674 pci_set_master(pdev
);
676 rc
= chd_dec_enable_int(adp
);
678 BCMLOG_ERR("_enable_int err:%d \n", rc
);
679 pci_disable_device(pdev
);
683 sts
= crystalhd_resume(&adp
->cmds
);
684 if (sts
!= BC_STS_SUCCESS
) {
685 BCMLOG_ERR("BCM70012 Resume %d\n", sts
);
686 pci_disable_device(pdev
);
694 static DEFINE_PCI_DEVICE_TABLE(chd_dec_pci_id_table
) = {
695 { PCI_VDEVICE(BROADCOM
, 0x1612), 8 },
698 MODULE_DEVICE_TABLE(pci
, chd_dec_pci_id_table
);
700 static struct pci_driver bc_chd_70012_driver
= {
701 .name
= "Broadcom 70012 Decoder",
702 .probe
= chd_dec_pci_probe
,
703 .remove
= __devexit_p(chd_dec_pci_remove
),
704 .id_table
= chd_dec_pci_id_table
,
706 .suspend
= chd_dec_pci_suspend
,
707 .resume
= chd_dec_pci_resume
711 void chd_set_log_level(struct crystalhd_adp
*adp
, char *arg
)
713 if ((!arg
) || (strlen(arg
) < 3))
714 g_linklog_level
= BCMLOG_ERROR
| BCMLOG_DATA
;
715 else if (!strncmp(arg
, "sstep", 5))
716 g_linklog_level
= BCMLOG_INFO
| BCMLOG_DATA
| BCMLOG_DBG
|
717 BCMLOG_SSTEP
| BCMLOG_ERROR
;
718 else if (!strncmp(arg
, "info", 4))
719 g_linklog_level
= BCMLOG_ERROR
| BCMLOG_DATA
| BCMLOG_INFO
;
720 else if (!strncmp(arg
, "debug", 5))
721 g_linklog_level
= BCMLOG_ERROR
| BCMLOG_DATA
| BCMLOG_INFO
|
723 else if (!strncmp(arg
, "pball", 5))
724 g_linklog_level
= 0xFFFFFFFF & ~(BCMLOG_SPINLOCK
);
725 else if (!strncmp(arg
, "silent", 6))
731 struct crystalhd_adp
*chd_get_adp(void)
736 static int __init
chd_dec_module_init(void)
740 chd_set_log_level(NULL
, "debug");
741 BCMLOG(BCMLOG_DATA
, "Loading crystalhd %d.%d.%d \n",
742 crystalhd_kmod_major
, crystalhd_kmod_minor
, crystalhd_kmod_rev
);
744 rc
= pci_register_driver(&bc_chd_70012_driver
);
747 BCMLOG_ERR("Could not find any devices. err:%d \n", rc
);
751 module_init(chd_dec_module_init
);
753 static void __exit
chd_dec_module_cleanup(void)
755 BCMLOG(BCMLOG_DATA
, "unloading crystalhd %d.%d.%d \n",
756 crystalhd_kmod_major
, crystalhd_kmod_minor
, crystalhd_kmod_rev
);
758 pci_unregister_driver(&bc_chd_70012_driver
);
760 module_exit(chd_dec_module_cleanup
);
762 MODULE_AUTHOR("Naren Sankar <nsankar@broadcom.com>");
763 MODULE_AUTHOR("Prasad Bolisetty <prasadb@broadcom.com>");
764 MODULE_DESCRIPTION(CRYSTAL_HD_NAME
);
765 MODULE_LICENSE("GPL");
766 MODULE_ALIAS("bcm70012");