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/mutex.h>
19 #include <linux/slab.h>
21 #include "crystalhd_lnx.h"
23 static DEFINE_MUTEX(chd_dec_mutex);
24 static struct class *crystalhd_class;
26 static struct crystalhd_adp *g_adp_info;
28 static irqreturn_t chd_dec_isr(int irq, void *arg)
30 struct crystalhd_adp *adp = (struct crystalhd_adp *) arg;
33 rc = crystalhd_cmd_interrupt(&adp->cmds);
35 return IRQ_RETVAL(rc);
38 static int chd_dec_enable_int(struct crystalhd_adp *adp)
42 if (!adp || !adp->pdev) {
43 BCMLOG_ERR("Invalid arg!!\n");
47 if (adp->pdev->msi_enabled)
50 adp->msi = pci_enable_msi(adp->pdev);
52 rc = request_irq(adp->pdev->irq, chd_dec_isr, IRQF_SHARED,
53 adp->name, (void *)adp);
55 BCMLOG_ERR("Interrupt request failed..\n");
56 pci_disable_msi(adp->pdev);
62 static int chd_dec_disable_int(struct crystalhd_adp *adp)
64 if (!adp || !adp->pdev) {
65 BCMLOG_ERR("Invalid arg!!\n");
69 free_irq(adp->pdev->irq, adp);
72 pci_disable_msi(adp->pdev);
77 struct crystalhd_ioctl_data *chd_dec_alloc_iodata(struct crystalhd_adp *adp, bool isr)
79 unsigned long flags = 0;
80 struct crystalhd_ioctl_data *temp;
85 spin_lock_irqsave(&adp->lock, flags);
87 temp = adp->idata_free_head;
89 adp->idata_free_head = adp->idata_free_head->next;
90 memset(temp, 0, sizeof(*temp));
93 spin_unlock_irqrestore(&adp->lock, flags);
97 void chd_dec_free_iodata(struct crystalhd_adp *adp, struct crystalhd_ioctl_data *iodata,
100 unsigned long flags = 0;
105 spin_lock_irqsave(&adp->lock, flags);
106 iodata->next = adp->idata_free_head;
107 adp->idata_free_head = iodata;
108 spin_unlock_irqrestore(&adp->lock, flags);
111 static inline int crystalhd_user_data(unsigned long ud, void *dr, int size, int set)
116 BCMLOG_ERR("Invalid arg\n");
121 rc = copy_to_user((void *)ud, dr, size);
123 rc = copy_from_user(dr, (void *)ud, size);
126 BCMLOG_ERR("Invalid args for command\n");
133 static int chd_dec_fetch_cdata(struct crystalhd_adp *adp, struct crystalhd_ioctl_data *io,
134 uint32_t m_sz, unsigned long ua)
136 unsigned long ua_off;
139 if (!adp || !io || !ua || !m_sz) {
140 BCMLOG_ERR("Invalid Arg!!\n");
144 io->add_cdata = vmalloc(m_sz);
145 if (!io->add_cdata) {
146 BCMLOG_ERR("kalloc fail for sz:%x\n", m_sz);
150 io->add_cdata_sz = m_sz;
151 ua_off = ua + sizeof(io->udata);
152 rc = crystalhd_user_data(ua_off, io->add_cdata, io->add_cdata_sz, 0);
154 BCMLOG_ERR("failed to pull add_cdata sz:%x ua_off:%x\n",
155 io->add_cdata_sz, (unsigned int)ua_off);
156 kfree(io->add_cdata);
157 io->add_cdata = NULL;
164 static int chd_dec_release_cdata(struct crystalhd_adp *adp,
165 struct crystalhd_ioctl_data *io, unsigned long ua)
167 unsigned long ua_off;
170 if (!adp || !io || !ua) {
171 BCMLOG_ERR("Invalid Arg!!\n");
175 if (io->cmd != BCM_IOC_FW_DOWNLOAD) {
176 ua_off = ua + sizeof(io->udata);
177 rc = crystalhd_user_data(ua_off, io->add_cdata,
178 io->add_cdata_sz, 1);
180 BCMLOG_ERR("failed to push add_cdata sz:%x ua_off:%x\n",
181 io->add_cdata_sz, (unsigned int)ua_off);
187 vfree(io->add_cdata);
188 io->add_cdata = NULL;
194 static int chd_dec_proc_user_data(struct crystalhd_adp *adp,
195 struct crystalhd_ioctl_data *io,
196 unsigned long ua, int set)
201 if (!adp || !io || !ua) {
202 BCMLOG_ERR("Invalid Arg!!\n");
206 rc = crystalhd_user_data(ua, &io->udata, sizeof(io->udata), set);
208 BCMLOG_ERR("failed to %s iodata\n", (set ? "set" : "get"));
215 case BCM_IOC_FW_DOWNLOAD:
216 m_sz = io->udata.u.devMem.NumDwords * 4;
218 rc = chd_dec_release_cdata(adp, io, ua);
220 rc = chd_dec_fetch_cdata(adp, io, m_sz, ua);
229 static int chd_dec_api_cmd(struct crystalhd_adp *adp, unsigned long ua,
230 uint32_t uid, uint32_t cmd, crystalhd_cmd_proc func)
233 struct crystalhd_ioctl_data *temp;
234 enum BC_STATUS sts = BC_STS_SUCCESS;
236 temp = chd_dec_alloc_iodata(adp, 0);
238 BCMLOG_ERR("Failed to get iodata..\n");
245 rc = chd_dec_proc_user_data(adp, temp, ua, 0);
247 sts = func(&adp->cmds, temp);
248 if (sts == BC_STS_PENDING)
249 sts = BC_STS_NOT_IMPL;
250 temp->udata.RetSts = sts;
251 rc = chd_dec_proc_user_data(adp, temp, ua, 1);
255 chd_dec_free_iodata(adp, temp, 0);
263 static long chd_dec_ioctl(struct file *fd, unsigned int cmd, unsigned long ua)
265 struct crystalhd_adp *adp = chd_get_adp();
266 crystalhd_cmd_proc cproc;
267 struct crystalhd_user *uc;
271 BCMLOG_ERR("Invalid adp\n");
275 uc = fd->private_data;
277 BCMLOG_ERR("Failed to get uc\n");
281 mutex_lock(&chd_dec_mutex);
282 cproc = crystalhd_get_cmd_proc(&adp->cmds, cmd, uc);
284 BCMLOG_ERR("Unhandled command: %d\n", cmd);
285 mutex_unlock(&chd_dec_mutex);
289 ret = chd_dec_api_cmd(adp, ua, uc->uid, cmd, cproc);
290 mutex_unlock(&chd_dec_mutex);
294 static int chd_dec_open(struct inode *in, struct file *fd)
296 struct crystalhd_adp *adp = chd_get_adp();
298 enum BC_STATUS sts = BC_STS_SUCCESS;
299 struct crystalhd_user *uc = NULL;
303 BCMLOG_ERR("Invalid adp\n");
307 if (adp->cfg_users >= BC_LINK_MAX_OPENS) {
308 BCMLOG(BCMLOG_INFO, "Already in use.%d\n", adp->cfg_users);
312 sts = crystalhd_user_open(&adp->cmds, &uc);
313 if (sts != BC_STS_SUCCESS) {
314 BCMLOG_ERR("cmd_user_open - %d\n", sts);
320 fd->private_data = uc;
325 static int chd_dec_close(struct inode *in, struct file *fd)
327 struct crystalhd_adp *adp = chd_get_adp();
328 struct crystalhd_user *uc;
332 BCMLOG_ERR("Invalid adp\n");
336 uc = fd->private_data;
338 BCMLOG_ERR("Failed to get uc\n");
342 crystalhd_user_close(&adp->cmds, uc);
349 static const struct file_operations chd_dec_fops = {
350 .owner = THIS_MODULE,
351 .unlocked_ioctl = chd_dec_ioctl,
352 .open = chd_dec_open,
353 .release = chd_dec_close,
356 static int __devinit chd_dec_init_chdev(struct crystalhd_adp *adp)
358 struct crystalhd_ioctl_data *temp;
360 int rc = -ENODEV, i = 0;
365 adp->chd_dec_major = register_chrdev(0, CRYSTALHD_API_NAME,
367 if (adp->chd_dec_major < 0) {
368 BCMLOG_ERR("Failed to create config dev\n");
369 rc = adp->chd_dec_major;
373 /* register crystalhd class */
374 crystalhd_class = class_create(THIS_MODULE, "crystalhd");
375 if (IS_ERR(crystalhd_class)) {
376 BCMLOG_ERR("failed to create class\n");
380 dev = device_create(crystalhd_class, NULL, MKDEV(adp->chd_dec_major, 0),
383 BCMLOG_ERR("failed to create device\n");
384 goto device_create_fail;
387 rc = crystalhd_create_elem_pool(adp, BC_LINK_ELEM_POOL_SZ);
389 BCMLOG_ERR("failed to create device\n");
393 /* Allocate general purpose ioctl pool. */
394 for (i = 0; i < CHD_IODATA_POOL_SZ; i++) {
395 /* FIXME: jarod: why atomic? */
396 temp = kzalloc(sizeof(struct crystalhd_ioctl_data), GFP_ATOMIC);
398 BCMLOG_ERR("ioctl data pool kzalloc failed\n");
402 /* Add to global pool.. */
403 chd_dec_free_iodata(adp, temp, 0);
409 crystalhd_delete_elem_pool(adp);
411 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
413 class_destroy(crystalhd_class);
418 static void __devexit chd_dec_release_chdev(struct crystalhd_adp *adp)
420 struct crystalhd_ioctl_data *temp = NULL;
424 if (adp->chd_dec_major > 0) {
425 /* unregister crystalhd class */
426 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
427 unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
428 BCMLOG(BCMLOG_INFO, "released api device - %d\n",
430 class_destroy(crystalhd_class);
432 adp->chd_dec_major = 0;
434 /* Clear iodata pool.. */
436 temp = chd_dec_alloc_iodata(adp, 0);
440 crystalhd_delete_elem_pool(adp);
443 static int __devinit chd_pci_reserve_mem(struct crystalhd_adp *pinfo)
446 unsigned long bar2 = pci_resource_start(pinfo->pdev, 2);
447 uint32_t mem_len = pci_resource_len(pinfo->pdev, 2);
448 unsigned long bar0 = pci_resource_start(pinfo->pdev, 0);
449 uint32_t i2o_len = pci_resource_len(pinfo->pdev, 0);
451 BCMLOG(BCMLOG_SSTEP, "bar2:0x%lx-0x%08x bar0:0x%lx-0x%08x\n",
452 bar2, mem_len, bar0, i2o_len);
454 rc = check_mem_region(bar2, mem_len);
456 BCMLOG_ERR("No valid mem region...\n");
460 pinfo->addr = ioremap_nocache(bar2, mem_len);
462 BCMLOG_ERR("Failed to remap mem region...\n");
466 pinfo->pci_mem_start = bar2;
467 pinfo->pci_mem_len = mem_len;
469 rc = check_mem_region(bar0, i2o_len);
471 BCMLOG_ERR("No valid mem region...\n");
475 pinfo->i2o_addr = ioremap_nocache(bar0, i2o_len);
476 if (!pinfo->i2o_addr) {
477 BCMLOG_ERR("Failed to remap mem region...\n");
481 pinfo->pci_i2o_start = bar0;
482 pinfo->pci_i2o_len = i2o_len;
484 rc = pci_request_regions(pinfo->pdev, pinfo->name);
486 BCMLOG_ERR("Region request failed: %d\n", rc);
490 BCMLOG(BCMLOG_SSTEP, "Mapped addr:0x%08lx i2o_addr:0x%08lx\n",
491 (unsigned long)pinfo->addr, (unsigned long)pinfo->i2o_addr);
496 static void __devexit chd_pci_release_mem(struct crystalhd_adp *pinfo)
502 iounmap(pinfo->addr);
505 iounmap(pinfo->i2o_addr);
507 pci_release_regions(pinfo->pdev);
511 static void __devexit chd_dec_pci_remove(struct pci_dev *pdev)
513 struct crystalhd_adp *pinfo;
514 enum BC_STATUS sts = BC_STS_SUCCESS;
518 pinfo = (struct crystalhd_adp *) pci_get_drvdata(pdev);
520 BCMLOG_ERR("could not get adp\n");
524 sts = crystalhd_delete_cmd_context(&pinfo->cmds);
525 if (sts != BC_STS_SUCCESS)
526 BCMLOG_ERR("cmd delete :%d\n", sts);
528 chd_dec_release_chdev(pinfo);
530 chd_dec_disable_int(pinfo);
532 chd_pci_release_mem(pinfo);
533 pci_disable_device(pinfo->pdev);
539 static int __devinit chd_dec_pci_probe(struct pci_dev *pdev,
540 const struct pci_device_id *entry)
542 struct crystalhd_adp *pinfo;
544 enum BC_STATUS sts = BC_STS_SUCCESS;
546 BCMLOG(BCMLOG_DBG, "PCI_INFO: Vendor:0x%04x Device:0x%04x "
547 "s_vendor:0x%04x s_device: 0x%04x\n",
548 pdev->vendor, pdev->device, pdev->subsystem_vendor,
549 pdev->subsystem_device);
551 /* FIXME: jarod: why atomic? */
552 pinfo = kzalloc(sizeof(struct crystalhd_adp), GFP_ATOMIC);
554 BCMLOG_ERR("Failed to allocate memory\n");
560 rc = pci_enable_device(pdev);
562 BCMLOG_ERR("Failed to enable PCI device\n");
566 snprintf(pinfo->name, 31, "crystalhd_pci_e:%d:%d:%d",
567 pdev->bus->number, PCI_SLOT(pdev->devfn),
568 PCI_FUNC(pdev->devfn));
570 rc = chd_pci_reserve_mem(pinfo);
572 BCMLOG_ERR("Failed to setup memory regions.\n");
577 pinfo->drv_data = entry->driver_data;
579 /* Setup adapter level lock.. */
580 spin_lock_init(&pinfo->lock);
582 /* setup api stuff.. */
583 chd_dec_init_chdev(pinfo);
584 rc = chd_dec_enable_int(pinfo);
586 BCMLOG_ERR("_enable_int err:%d\n", rc);
587 pci_disable_device(pdev);
591 /* Set dma mask... */
592 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
593 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
595 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
596 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
599 BCMLOG_ERR("Unabled to setup DMA %d\n", rc);
600 pci_disable_device(pdev);
604 sts = crystalhd_setup_cmd_context(&pinfo->cmds, pinfo);
605 if (sts != BC_STS_SUCCESS) {
606 BCMLOG_ERR("cmd setup :%d\n", sts);
607 pci_disable_device(pdev);
611 pci_set_master(pdev);
613 pci_set_drvdata(pdev, pinfo);
621 int chd_dec_pci_suspend(struct pci_dev *pdev, pm_message_t state)
623 struct crystalhd_adp *adp;
624 struct crystalhd_ioctl_data *temp;
625 enum BC_STATUS sts = BC_STS_SUCCESS;
627 adp = (struct crystalhd_adp *)pci_get_drvdata(pdev);
629 BCMLOG_ERR("could not get adp\n");
633 temp = chd_dec_alloc_iodata(adp, false);
635 BCMLOG_ERR("could not get ioctl data\n");
639 sts = crystalhd_suspend(&adp->cmds, temp);
640 if (sts != BC_STS_SUCCESS) {
641 BCMLOG_ERR("BCM70012 Suspend %d\n", sts);
645 chd_dec_free_iodata(adp, temp, false);
646 chd_dec_disable_int(adp);
647 pci_save_state(pdev);
649 /* Disable IO/bus master/irq router */
650 pci_disable_device(pdev);
651 pci_set_power_state(pdev, pci_choose_state(pdev, state));
655 int chd_dec_pci_resume(struct pci_dev *pdev)
657 struct crystalhd_adp *adp;
658 enum BC_STATUS sts = BC_STS_SUCCESS;
661 adp = (struct crystalhd_adp *)pci_get_drvdata(pdev);
663 BCMLOG_ERR("could not get adp\n");
667 pci_set_power_state(pdev, PCI_D0);
668 pci_restore_state(pdev);
670 /* device's irq possibly is changed, driver should take care */
671 if (pci_enable_device(pdev)) {
672 BCMLOG_ERR("Failed to enable PCI device\n");
676 pci_set_master(pdev);
678 rc = chd_dec_enable_int(adp);
680 BCMLOG_ERR("_enable_int err:%d\n", rc);
681 pci_disable_device(pdev);
685 sts = crystalhd_resume(&adp->cmds);
686 if (sts != BC_STS_SUCCESS) {
687 BCMLOG_ERR("BCM70012 Resume %d\n", sts);
688 pci_disable_device(pdev);
696 static DEFINE_PCI_DEVICE_TABLE(chd_dec_pci_id_table) = {
697 { PCI_VDEVICE(BROADCOM, 0x1612), 8 },
700 MODULE_DEVICE_TABLE(pci, chd_dec_pci_id_table);
702 static struct pci_driver bc_chd_70012_driver = {
703 .name = "Broadcom 70012 Decoder",
704 .probe = chd_dec_pci_probe,
705 .remove = __devexit_p(chd_dec_pci_remove),
706 .id_table = chd_dec_pci_id_table,
708 .suspend = chd_dec_pci_suspend,
709 .resume = chd_dec_pci_resume
713 void chd_set_log_level(struct crystalhd_adp *adp, char *arg)
715 if ((!arg) || (strlen(arg) < 3))
716 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA;
717 else if (!strncmp(arg, "sstep", 5))
718 g_linklog_level = BCMLOG_INFO | BCMLOG_DATA | BCMLOG_DBG |
719 BCMLOG_SSTEP | BCMLOG_ERROR;
720 else if (!strncmp(arg, "info", 4))
721 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO;
722 else if (!strncmp(arg, "debug", 5))
723 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO |
725 else if (!strncmp(arg, "pball", 5))
726 g_linklog_level = 0xFFFFFFFF & ~(BCMLOG_SPINLOCK);
727 else if (!strncmp(arg, "silent", 6))
733 struct crystalhd_adp *chd_get_adp(void)
738 static int __init chd_dec_module_init(void)
742 chd_set_log_level(NULL, "debug");
743 BCMLOG(BCMLOG_DATA, "Loading crystalhd %d.%d.%d\n",
744 crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
746 rc = pci_register_driver(&bc_chd_70012_driver);
749 BCMLOG_ERR("Could not find any devices. err:%d\n", rc);
753 module_init(chd_dec_module_init);
755 static void __exit chd_dec_module_cleanup(void)
757 BCMLOG(BCMLOG_DATA, "unloading crystalhd %d.%d.%d\n",
758 crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
760 pci_unregister_driver(&bc_chd_70012_driver);
762 module_exit(chd_dec_module_cleanup);
764 MODULE_AUTHOR("Naren Sankar <nsankar@broadcom.com>");
765 MODULE_AUTHOR("Prasad Bolisetty <prasadb@broadcom.com>");
766 MODULE_DESCRIPTION(CRYSTAL_HD_NAME);
767 MODULE_LICENSE("GPL");
768 MODULE_ALIAS("bcm70012");