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 "crystalhd.h"
20 #include <linux/mutex.h>
21 #include <linux/slab.h>
24 static DEFINE_MUTEX(chd_dec_mutex);
25 static struct class *crystalhd_class;
27 static struct crystalhd_adp *g_adp_info;
29 static irqreturn_t chd_dec_isr(int irq, void *arg)
31 struct crystalhd_adp *adp = (struct crystalhd_adp *) arg;
34 rc = crystalhd_cmd_interrupt(&adp->cmds);
36 return IRQ_RETVAL(rc);
39 static int chd_dec_enable_int(struct crystalhd_adp *adp)
43 if (!adp || !adp->pdev) {
44 BCMLOG_ERR("Invalid arg!!\n");
48 if (adp->pdev->msi_enabled)
51 adp->msi = pci_enable_msi(adp->pdev);
53 rc = request_irq(adp->pdev->irq, chd_dec_isr, IRQF_SHARED,
54 adp->name, (void *)adp);
56 BCMLOG_ERR("Interrupt request failed..\n");
57 pci_disable_msi(adp->pdev);
63 static int chd_dec_disable_int(struct crystalhd_adp *adp)
65 if (!adp || !adp->pdev) {
66 BCMLOG_ERR("Invalid arg!!\n");
70 free_irq(adp->pdev->irq, adp);
73 pci_disable_msi(adp->pdev);
79 crystalhd_ioctl_data *chd_dec_alloc_iodata(struct crystalhd_adp *adp,
82 unsigned long flags = 0;
83 struct crystalhd_ioctl_data *temp;
88 spin_lock_irqsave(&adp->lock, flags);
90 temp = adp->idata_free_head;
92 adp->idata_free_head = adp->idata_free_head->next;
93 memset(temp, 0, sizeof(*temp));
96 spin_unlock_irqrestore(&adp->lock, flags);
100 static void chd_dec_free_iodata(struct crystalhd_adp *adp,
101 struct crystalhd_ioctl_data *iodata, bool isr)
103 unsigned long flags = 0;
108 spin_lock_irqsave(&adp->lock, flags);
109 iodata->next = adp->idata_free_head;
110 adp->idata_free_head = iodata;
111 spin_unlock_irqrestore(&adp->lock, flags);
114 static inline int crystalhd_user_data(unsigned long ud, void *dr,
120 BCMLOG_ERR("Invalid arg\n");
125 rc = copy_to_user((void *)ud, dr, size);
127 rc = copy_from_user(dr, (void *)ud, size);
130 BCMLOG_ERR("Invalid args for command\n");
137 static int chd_dec_fetch_cdata(struct crystalhd_adp *adp,
138 struct crystalhd_ioctl_data *io, uint32_t m_sz, unsigned long ua)
140 unsigned long ua_off;
143 if (!adp || !io || !ua || !m_sz) {
144 BCMLOG_ERR("Invalid Arg!!\n");
148 io->add_cdata = vmalloc(m_sz);
149 if (!io->add_cdata) {
150 BCMLOG_ERR("kalloc fail for sz:%x\n", m_sz);
154 io->add_cdata_sz = m_sz;
155 ua_off = ua + sizeof(io->udata);
156 rc = crystalhd_user_data(ua_off, io->add_cdata, io->add_cdata_sz, 0);
158 BCMLOG_ERR("failed to pull add_cdata sz:%x ua_off:%x\n",
159 io->add_cdata_sz, (unsigned int)ua_off);
160 vfree(io->add_cdata);
161 io->add_cdata = NULL;
168 static int chd_dec_release_cdata(struct crystalhd_adp *adp,
169 struct crystalhd_ioctl_data *io, unsigned long ua)
171 unsigned long ua_off;
174 if (!adp || !io || !ua) {
175 BCMLOG_ERR("Invalid Arg!!\n");
179 if (io->cmd != BCM_IOC_FW_DOWNLOAD) {
180 ua_off = ua + sizeof(io->udata);
181 rc = crystalhd_user_data(ua_off, io->add_cdata,
182 io->add_cdata_sz, 1);
185 "failed to push add_cdata sz:%x ua_off:%x\n",
186 io->add_cdata_sz, (unsigned int)ua_off);
192 vfree(io->add_cdata);
193 io->add_cdata = NULL;
199 static int chd_dec_proc_user_data(struct crystalhd_adp *adp,
200 struct crystalhd_ioctl_data *io,
201 unsigned long ua, int set)
206 if (!adp || !io || !ua) {
207 BCMLOG_ERR("Invalid Arg!!\n");
211 rc = crystalhd_user_data(ua, &io->udata, sizeof(io->udata), set);
213 BCMLOG_ERR("failed to %s iodata\n", (set ? "set" : "get"));
220 case BCM_IOC_FW_DOWNLOAD:
221 m_sz = io->udata.u.devMem.NumDwords * 4;
223 rc = chd_dec_release_cdata(adp, io, ua);
225 rc = chd_dec_fetch_cdata(adp, io, m_sz, ua);
234 static int chd_dec_api_cmd(struct crystalhd_adp *adp, unsigned long ua,
235 uint32_t uid, uint32_t cmd, crystalhd_cmd_proc func)
238 struct crystalhd_ioctl_data *temp;
239 enum BC_STATUS sts = BC_STS_SUCCESS;
241 temp = chd_dec_alloc_iodata(adp, 0);
243 BCMLOG_ERR("Failed to get iodata..\n");
250 rc = chd_dec_proc_user_data(adp, temp, ua, 0);
252 sts = func(&adp->cmds, temp);
253 if (sts == BC_STS_PENDING)
254 sts = BC_STS_NOT_IMPL;
255 temp->udata.RetSts = sts;
256 rc = chd_dec_proc_user_data(adp, temp, ua, 1);
259 chd_dec_free_iodata(adp, temp, 0);
265 static long chd_dec_ioctl(struct file *fd, unsigned int cmd, unsigned long ua)
267 struct crystalhd_adp *adp = chd_get_adp();
268 crystalhd_cmd_proc cproc;
269 struct crystalhd_user *uc;
273 BCMLOG_ERR("Invalid adp\n");
277 uc = fd->private_data;
279 BCMLOG_ERR("Failed to get uc\n");
283 mutex_lock(&chd_dec_mutex);
284 cproc = crystalhd_get_cmd_proc(&adp->cmds, cmd, uc);
286 BCMLOG_ERR("Unhandled command: %d\n", cmd);
287 mutex_unlock(&chd_dec_mutex);
291 ret = chd_dec_api_cmd(adp, ua, uc->uid, cmd, cproc);
292 mutex_unlock(&chd_dec_mutex);
296 static int chd_dec_open(struct inode *in, struct file *fd)
298 struct crystalhd_adp *adp = chd_get_adp();
300 enum BC_STATUS sts = BC_STS_SUCCESS;
301 struct crystalhd_user *uc = NULL;
304 BCMLOG_ERR("Invalid adp\n");
308 if (adp->cfg_users >= BC_LINK_MAX_OPENS) {
309 BCMLOG(BCMLOG_INFO, "Already in use.%d\n", adp->cfg_users);
313 sts = crystalhd_user_open(&adp->cmds, &uc);
314 if (sts != BC_STS_SUCCESS) {
315 BCMLOG_ERR("cmd_user_open - %d\n", sts);
321 fd->private_data = uc;
326 static int chd_dec_close(struct inode *in, struct file *fd)
328 struct crystalhd_adp *adp = chd_get_adp();
329 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,
354 .llseek = noop_llseek,
357 static int chd_dec_init_chdev(struct crystalhd_adp *adp)
359 struct crystalhd_ioctl_data *temp;
361 int rc = -ENODEV, i = 0;
366 adp->chd_dec_major = register_chrdev(0, CRYSTALHD_API_NAME,
368 if (adp->chd_dec_major < 0) {
369 BCMLOG_ERR("Failed to create config dev\n");
370 rc = adp->chd_dec_major;
374 /* register crystalhd class */
375 crystalhd_class = class_create(THIS_MODULE, "crystalhd");
376 if (IS_ERR(crystalhd_class)) {
377 rc = PTR_ERR(crystalhd_class);
378 BCMLOG_ERR("failed to create class\n");
379 goto class_create_fail;
382 dev = device_create(crystalhd_class, NULL,
383 MKDEV(adp->chd_dec_major, 0), NULL, "crystalhd");
386 BCMLOG_ERR("failed to create device\n");
387 goto device_create_fail;
390 rc = crystalhd_create_elem_pool(adp, BC_LINK_ELEM_POOL_SZ);
392 BCMLOG_ERR("failed to create device\n");
396 /* Allocate general purpose ioctl pool. */
397 for (i = 0; i < CHD_IODATA_POOL_SZ; i++) {
398 temp = kzalloc(sizeof(struct crystalhd_ioctl_data),
401 BCMLOG_ERR("ioctl data pool kzalloc failed\n");
405 /* Add to global pool.. */
406 chd_dec_free_iodata(adp, temp, 0);
412 crystalhd_delete_elem_pool(adp);
414 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
416 class_destroy(crystalhd_class);
418 unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
423 static void chd_dec_release_chdev(struct crystalhd_adp *adp)
425 struct crystalhd_ioctl_data *temp = NULL;
429 if (adp->chd_dec_major > 0) {
430 /* unregister crystalhd class */
431 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
432 unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
433 BCMLOG(BCMLOG_INFO, "released api device - %d\n",
435 class_destroy(crystalhd_class);
437 adp->chd_dec_major = 0;
439 /* Clear iodata pool.. */
441 temp = chd_dec_alloc_iodata(adp, 0);
445 crystalhd_delete_elem_pool(adp);
448 static int chd_pci_reserve_mem(struct crystalhd_adp *pinfo)
451 unsigned long bar2 = pci_resource_start(pinfo->pdev, 2);
452 uint32_t mem_len = pci_resource_len(pinfo->pdev, 2);
453 unsigned long bar0 = pci_resource_start(pinfo->pdev, 0);
454 uint32_t i2o_len = pci_resource_len(pinfo->pdev, 0);
456 BCMLOG(BCMLOG_SSTEP, "bar2:0x%lx-0x%08x bar0:0x%lx-0x%08x\n",
457 bar2, mem_len, bar0, i2o_len);
459 rc = check_mem_region(bar2, mem_len);
461 BCMLOG_ERR("No valid mem region...\n");
465 pinfo->addr = ioremap_nocache(bar2, mem_len);
467 BCMLOG_ERR("Failed to remap mem region...\n");
471 pinfo->pci_mem_start = bar2;
472 pinfo->pci_mem_len = mem_len;
474 rc = check_mem_region(bar0, i2o_len);
476 BCMLOG_ERR("No valid mem region...\n");
480 pinfo->i2o_addr = ioremap_nocache(bar0, i2o_len);
481 if (!pinfo->i2o_addr) {
482 BCMLOG_ERR("Failed to remap mem region...\n");
486 pinfo->pci_i2o_start = bar0;
487 pinfo->pci_i2o_len = i2o_len;
489 rc = pci_request_regions(pinfo->pdev, pinfo->name);
491 BCMLOG_ERR("Region request failed: %d\n", rc);
495 BCMLOG(BCMLOG_SSTEP, "Mapped addr:0x%08lx i2o_addr:0x%08lx\n",
496 (unsigned long)pinfo->addr, (unsigned long)pinfo->i2o_addr);
501 static void chd_pci_release_mem(struct crystalhd_adp *pinfo)
507 iounmap(pinfo->addr);
510 iounmap(pinfo->i2o_addr);
512 pci_release_regions(pinfo->pdev);
516 static void chd_dec_pci_remove(struct pci_dev *pdev)
518 struct crystalhd_adp *pinfo;
519 enum BC_STATUS sts = BC_STS_SUCCESS;
521 pinfo = pci_get_drvdata(pdev);
523 BCMLOG_ERR("could not get adp\n");
527 sts = crystalhd_delete_cmd_context(&pinfo->cmds);
528 if (sts != BC_STS_SUCCESS)
529 BCMLOG_ERR("cmd delete :%d\n", sts);
531 chd_dec_release_chdev(pinfo);
533 chd_dec_disable_int(pinfo);
535 chd_pci_release_mem(pinfo);
536 pci_disable_device(pinfo->pdev);
542 static int chd_dec_pci_probe(struct pci_dev *pdev,
543 const struct pci_device_id *entry)
545 struct crystalhd_adp *pinfo;
547 enum BC_STATUS sts = BC_STS_SUCCESS;
549 BCMLOG(BCMLOG_DBG, "PCI_INFO: Vendor:0x%04x Device:0x%04x s_vendor:0x%04x s_device: 0x%04x\n",
550 pdev->vendor, pdev->device, pdev->subsystem_vendor,
551 pdev->subsystem_device);
553 pinfo = kzalloc(sizeof(struct crystalhd_adp), GFP_KERNEL);
555 BCMLOG_ERR("Failed to allocate memory\n");
561 rc = pci_enable_device(pdev);
563 BCMLOG_ERR("Failed to enable PCI device\n");
567 snprintf(pinfo->name, sizeof(pinfo->name), "crystalhd_pci_e:%d:%d:%d",
568 pdev->bus->number, PCI_SLOT(pdev->devfn),
569 PCI_FUNC(pdev->devfn));
571 rc = chd_pci_reserve_mem(pinfo);
573 BCMLOG_ERR("Failed to setup memory regions.\n");
574 pci_disable_device(pdev);
580 pinfo->drv_data = entry->driver_data;
582 /* Setup adapter level lock.. */
583 spin_lock_init(&pinfo->lock);
585 /* setup api stuff.. */
586 chd_dec_init_chdev(pinfo);
587 rc = chd_dec_enable_int(pinfo);
589 BCMLOG_ERR("_enable_int err:%d\n", rc);
590 pci_disable_device(pdev);
595 /* Set dma mask... */
596 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
597 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
599 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
600 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
603 BCMLOG_ERR("Unabled to setup DMA %d\n", rc);
604 pci_disable_device(pdev);
609 sts = crystalhd_setup_cmd_context(&pinfo->cmds, pinfo);
610 if (sts != BC_STS_SUCCESS) {
611 BCMLOG_ERR("cmd setup :%d\n", sts);
612 pci_disable_device(pdev);
617 pci_set_master(pdev);
619 pci_set_drvdata(pdev, pinfo);
631 static int chd_dec_pci_suspend(struct pci_dev *pdev, pm_message_t state)
633 struct crystalhd_adp *adp;
634 struct crystalhd_ioctl_data *temp;
635 enum BC_STATUS sts = BC_STS_SUCCESS;
637 adp = pci_get_drvdata(pdev);
639 BCMLOG_ERR("could not get adp\n");
643 temp = chd_dec_alloc_iodata(adp, false);
645 BCMLOG_ERR("could not get ioctl data\n");
649 sts = crystalhd_suspend(&adp->cmds, temp);
650 if (sts != BC_STS_SUCCESS) {
651 BCMLOG_ERR("BCM70012 Suspend %d\n", sts);
655 chd_dec_free_iodata(adp, temp, false);
656 chd_dec_disable_int(adp);
657 pci_save_state(pdev);
659 /* Disable IO/bus master/irq router */
660 pci_disable_device(pdev);
661 pci_set_power_state(pdev, pci_choose_state(pdev, state));
665 static int chd_dec_pci_resume(struct pci_dev *pdev)
667 struct crystalhd_adp *adp;
668 enum BC_STATUS sts = BC_STS_SUCCESS;
671 adp = pci_get_drvdata(pdev);
673 BCMLOG_ERR("could not get adp\n");
677 pci_set_power_state(pdev, PCI_D0);
678 pci_restore_state(pdev);
680 /* device's irq possibly is changed, driver should take care */
681 if (pci_enable_device(pdev)) {
682 BCMLOG_ERR("Failed to enable PCI device\n");
686 pci_set_master(pdev);
688 rc = chd_dec_enable_int(adp);
690 BCMLOG_ERR("_enable_int err:%d\n", rc);
691 pci_disable_device(pdev);
695 sts = crystalhd_resume(&adp->cmds);
696 if (sts != BC_STS_SUCCESS) {
697 BCMLOG_ERR("BCM70012 Resume %d\n", sts);
698 pci_disable_device(pdev);
706 static const struct pci_device_id chd_dec_pci_id_table[] = {
707 { PCI_VDEVICE(BROADCOM, 0x1612), 8 },
710 MODULE_DEVICE_TABLE(pci, chd_dec_pci_id_table);
712 static struct pci_driver bc_chd_70012_driver = {
713 .name = "Broadcom 70012 Decoder",
714 .probe = chd_dec_pci_probe,
715 .remove = chd_dec_pci_remove,
716 .id_table = chd_dec_pci_id_table,
718 .suspend = chd_dec_pci_suspend,
719 .resume = chd_dec_pci_resume
723 void chd_set_log_level(struct crystalhd_adp *adp, char *arg)
725 if ((!arg) || (strlen(arg) < 3))
726 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA;
727 else if (!strncmp(arg, "sstep", 5))
728 g_linklog_level = BCMLOG_INFO | BCMLOG_DATA | BCMLOG_DBG |
729 BCMLOG_SSTEP | BCMLOG_ERROR;
730 else if (!strncmp(arg, "info", 4))
731 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO;
732 else if (!strncmp(arg, "debug", 5))
733 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO |
735 else if (!strncmp(arg, "pball", 5))
736 g_linklog_level = 0xFFFFFFFF & ~(BCMLOG_SPINLOCK);
737 else if (!strncmp(arg, "silent", 6))
743 struct crystalhd_adp *chd_get_adp(void)
748 static int __init chd_dec_module_init(void)
752 chd_set_log_level(NULL, "debug");
753 BCMLOG(BCMLOG_DATA, "Loading crystalhd %d.%d.%d\n",
754 crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
756 rc = pci_register_driver(&bc_chd_70012_driver);
759 BCMLOG_ERR("Could not find any devices. err:%d\n", rc);
763 module_init(chd_dec_module_init);
765 static void __exit chd_dec_module_cleanup(void)
767 BCMLOG(BCMLOG_DATA, "unloading crystalhd %d.%d.%d\n",
768 crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
770 pci_unregister_driver(&bc_chd_70012_driver);
772 module_exit(chd_dec_module_cleanup);
774 MODULE_AUTHOR("Naren Sankar <nsankar@broadcom.com>");
775 MODULE_AUTHOR("Prasad Bolisetty <prasadb@broadcom.com>");
776 MODULE_DESCRIPTION(CRYSTAL_HD_NAME);
777 MODULE_LICENSE("GPL");
778 MODULE_ALIAS("bcm70012");