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);
78 struct crystalhd_ioctl_data *chd_dec_alloc_iodata(struct crystalhd_adp *adp, bool isr)
80 unsigned long flags = 0;
81 struct crystalhd_ioctl_data *temp;
86 spin_lock_irqsave(&adp->lock, flags);
88 temp = adp->idata_free_head;
90 adp->idata_free_head = adp->idata_free_head->next;
91 memset(temp, 0, sizeof(*temp));
94 spin_unlock_irqrestore(&adp->lock, flags);
98 void chd_dec_free_iodata(struct crystalhd_adp *adp, struct crystalhd_ioctl_data *iodata,
101 unsigned long flags = 0;
106 spin_lock_irqsave(&adp->lock, flags);
107 iodata->next = adp->idata_free_head;
108 adp->idata_free_head = iodata;
109 spin_unlock_irqrestore(&adp->lock, flags);
112 static inline int crystalhd_user_data(unsigned long ud, void *dr, int size, int set)
117 BCMLOG_ERR("Invalid arg\n");
122 rc = copy_to_user((void *)ud, dr, size);
124 rc = copy_from_user(dr, (void *)ud, size);
127 BCMLOG_ERR("Invalid args for command\n");
134 static int chd_dec_fetch_cdata(struct crystalhd_adp *adp, struct crystalhd_ioctl_data *io,
135 uint32_t m_sz, unsigned long ua)
137 unsigned long ua_off;
140 if (!adp || !io || !ua || !m_sz) {
141 BCMLOG_ERR("Invalid Arg!!\n");
145 io->add_cdata = vmalloc(m_sz);
146 if (!io->add_cdata) {
147 BCMLOG_ERR("kalloc fail for sz:%x\n", m_sz);
151 io->add_cdata_sz = m_sz;
152 ua_off = ua + sizeof(io->udata);
153 rc = crystalhd_user_data(ua_off, io->add_cdata, io->add_cdata_sz, 0);
155 BCMLOG_ERR("failed to pull add_cdata sz:%x ua_off:%x\n",
156 io->add_cdata_sz, (unsigned int)ua_off);
157 kfree(io->add_cdata);
158 io->add_cdata = NULL;
165 static int chd_dec_release_cdata(struct crystalhd_adp *adp,
166 struct 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 struct 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 struct crystalhd_ioctl_data *temp;
235 enum 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 long chd_dec_ioctl(struct file *fd, unsigned int cmd, unsigned long ua)
266 struct crystalhd_adp *adp = chd_get_adp();
267 crystalhd_cmd_proc cproc;
268 struct crystalhd_user *uc;
272 BCMLOG_ERR("Invalid adp\n");
276 uc = fd->private_data;
278 BCMLOG_ERR("Failed to get uc\n");
282 mutex_lock(&chd_dec_mutex);
283 cproc = crystalhd_get_cmd_proc(&adp->cmds, cmd, uc);
285 BCMLOG_ERR("Unhandled command: %d\n", cmd);
286 mutex_unlock(&chd_dec_mutex);
290 ret = chd_dec_api_cmd(adp, ua, uc->uid, cmd, cproc);
291 mutex_unlock(&chd_dec_mutex);
295 static int chd_dec_open(struct inode *in, struct file *fd)
297 struct crystalhd_adp *adp = chd_get_adp();
299 enum BC_STATUS sts = BC_STS_SUCCESS;
300 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;
331 BCMLOG_ERR("Invalid adp\n");
335 uc = fd->private_data;
337 BCMLOG_ERR("Failed to get uc\n");
341 crystalhd_user_close(&adp->cmds, uc);
348 static const struct file_operations chd_dec_fops = {
349 .owner = THIS_MODULE,
350 .unlocked_ioctl = chd_dec_ioctl,
351 .open = chd_dec_open,
352 .release = chd_dec_close,
353 .llseek = noop_llseek,
356 static int 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 rc = PTR_ERR(crystalhd_class);
377 BCMLOG_ERR("failed to create class\n");
378 goto class_create_fail;
381 dev = device_create(crystalhd_class, NULL, MKDEV(adp->chd_dec_major, 0),
385 BCMLOG_ERR("failed to create device\n");
386 goto device_create_fail;
389 rc = crystalhd_create_elem_pool(adp, BC_LINK_ELEM_POOL_SZ);
391 BCMLOG_ERR("failed to create device\n");
395 /* Allocate general purpose ioctl pool. */
396 for (i = 0; i < CHD_IODATA_POOL_SZ; i++) {
397 temp = kzalloc(sizeof(struct crystalhd_ioctl_data), GFP_KERNEL);
399 BCMLOG_ERR("ioctl data pool kzalloc failed\n");
403 /* Add to global pool.. */
404 chd_dec_free_iodata(adp, temp, 0);
410 crystalhd_delete_elem_pool(adp);
412 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
414 class_destroy(crystalhd_class);
416 unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
421 static void chd_dec_release_chdev(struct crystalhd_adp *adp)
423 struct crystalhd_ioctl_data *temp = NULL;
427 if (adp->chd_dec_major > 0) {
428 /* unregister crystalhd class */
429 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
430 unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
431 BCMLOG(BCMLOG_INFO, "released api device - %d\n",
433 class_destroy(crystalhd_class);
435 adp->chd_dec_major = 0;
437 /* Clear iodata pool.. */
439 temp = chd_dec_alloc_iodata(adp, 0);
443 crystalhd_delete_elem_pool(adp);
446 static int chd_pci_reserve_mem(struct crystalhd_adp *pinfo)
449 unsigned long bar2 = pci_resource_start(pinfo->pdev, 2);
450 uint32_t mem_len = pci_resource_len(pinfo->pdev, 2);
451 unsigned long bar0 = pci_resource_start(pinfo->pdev, 0);
452 uint32_t i2o_len = pci_resource_len(pinfo->pdev, 0);
454 BCMLOG(BCMLOG_SSTEP, "bar2:0x%lx-0x%08x bar0:0x%lx-0x%08x\n",
455 bar2, mem_len, bar0, i2o_len);
457 rc = check_mem_region(bar2, mem_len);
459 BCMLOG_ERR("No valid mem region...\n");
463 pinfo->addr = ioremap_nocache(bar2, mem_len);
465 BCMLOG_ERR("Failed to remap mem region...\n");
469 pinfo->pci_mem_start = bar2;
470 pinfo->pci_mem_len = mem_len;
472 rc = check_mem_region(bar0, i2o_len);
474 BCMLOG_ERR("No valid mem region...\n");
478 pinfo->i2o_addr = ioremap_nocache(bar0, i2o_len);
479 if (!pinfo->i2o_addr) {
480 BCMLOG_ERR("Failed to remap mem region...\n");
484 pinfo->pci_i2o_start = bar0;
485 pinfo->pci_i2o_len = i2o_len;
487 rc = pci_request_regions(pinfo->pdev, pinfo->name);
489 BCMLOG_ERR("Region request failed: %d\n", rc);
493 BCMLOG(BCMLOG_SSTEP, "Mapped addr:0x%08lx i2o_addr:0x%08lx\n",
494 (unsigned long)pinfo->addr, (unsigned long)pinfo->i2o_addr);
499 static void chd_pci_release_mem(struct crystalhd_adp *pinfo)
505 iounmap(pinfo->addr);
508 iounmap(pinfo->i2o_addr);
510 pci_release_regions(pinfo->pdev);
514 static void chd_dec_pci_remove(struct pci_dev *pdev)
516 struct crystalhd_adp *pinfo;
517 enum BC_STATUS sts = BC_STS_SUCCESS;
519 pinfo = pci_get_drvdata(pdev);
521 BCMLOG_ERR("could not get adp\n");
525 sts = crystalhd_delete_cmd_context(&pinfo->cmds);
526 if (sts != BC_STS_SUCCESS)
527 BCMLOG_ERR("cmd delete :%d\n", sts);
529 chd_dec_release_chdev(pinfo);
531 chd_dec_disable_int(pinfo);
533 chd_pci_release_mem(pinfo);
534 pci_disable_device(pinfo->pdev);
540 static int chd_dec_pci_probe(struct pci_dev *pdev,
541 const struct pci_device_id *entry)
543 struct crystalhd_adp *pinfo;
545 enum BC_STATUS sts = BC_STS_SUCCESS;
547 BCMLOG(BCMLOG_DBG, "PCI_INFO: Vendor:0x%04x Device:0x%04x "
548 "s_vendor:0x%04x s_device: 0x%04x\n",
549 pdev->vendor, pdev->device, pdev->subsystem_vendor,
550 pdev->subsystem_device);
552 pinfo = kzalloc(sizeof(struct crystalhd_adp), GFP_KERNEL);
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, sizeof(pinfo->name), "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");
573 pci_disable_device(pdev);
579 pinfo->drv_data = entry->driver_data;
581 /* Setup adapter level lock.. */
582 spin_lock_init(&pinfo->lock);
584 /* setup api stuff.. */
585 chd_dec_init_chdev(pinfo);
586 rc = chd_dec_enable_int(pinfo);
588 BCMLOG_ERR("_enable_int err:%d\n", rc);
589 pci_disable_device(pdev);
594 /* Set dma mask... */
595 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
596 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
598 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
599 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
602 BCMLOG_ERR("Unabled to setup DMA %d\n", rc);
603 pci_disable_device(pdev);
608 sts = crystalhd_setup_cmd_context(&pinfo->cmds, pinfo);
609 if (sts != BC_STS_SUCCESS) {
610 BCMLOG_ERR("cmd setup :%d\n", sts);
611 pci_disable_device(pdev);
616 pci_set_master(pdev);
618 pci_set_drvdata(pdev, pinfo);
630 int chd_dec_pci_suspend(struct pci_dev *pdev, pm_message_t state)
632 struct crystalhd_adp *adp;
633 struct crystalhd_ioctl_data *temp;
634 enum BC_STATUS sts = BC_STS_SUCCESS;
636 adp = pci_get_drvdata(pdev);
638 BCMLOG_ERR("could not get adp\n");
642 temp = chd_dec_alloc_iodata(adp, false);
644 BCMLOG_ERR("could not get ioctl data\n");
648 sts = crystalhd_suspend(&adp->cmds, temp);
649 if (sts != BC_STS_SUCCESS) {
650 BCMLOG_ERR("BCM70012 Suspend %d\n", sts);
654 chd_dec_free_iodata(adp, temp, false);
655 chd_dec_disable_int(adp);
656 pci_save_state(pdev);
658 /* Disable IO/bus master/irq router */
659 pci_disable_device(pdev);
660 pci_set_power_state(pdev, pci_choose_state(pdev, state));
664 int chd_dec_pci_resume(struct pci_dev *pdev)
666 struct crystalhd_adp *adp;
667 enum BC_STATUS sts = BC_STS_SUCCESS;
670 adp = pci_get_drvdata(pdev);
672 BCMLOG_ERR("could not get adp\n");
676 pci_set_power_state(pdev, PCI_D0);
677 pci_restore_state(pdev);
679 /* device's irq possibly is changed, driver should take care */
680 if (pci_enable_device(pdev)) {
681 BCMLOG_ERR("Failed to enable PCI device\n");
685 pci_set_master(pdev);
687 rc = chd_dec_enable_int(adp);
689 BCMLOG_ERR("_enable_int err:%d\n", rc);
690 pci_disable_device(pdev);
694 sts = crystalhd_resume(&adp->cmds);
695 if (sts != BC_STS_SUCCESS) {
696 BCMLOG_ERR("BCM70012 Resume %d\n", sts);
697 pci_disable_device(pdev);
705 static DEFINE_PCI_DEVICE_TABLE(chd_dec_pci_id_table) = {
706 { PCI_VDEVICE(BROADCOM, 0x1612), 8 },
709 MODULE_DEVICE_TABLE(pci, chd_dec_pci_id_table);
711 static struct pci_driver bc_chd_70012_driver = {
712 .name = "Broadcom 70012 Decoder",
713 .probe = chd_dec_pci_probe,
714 .remove = chd_dec_pci_remove,
715 .id_table = chd_dec_pci_id_table,
717 .suspend = chd_dec_pci_suspend,
718 .resume = chd_dec_pci_resume
722 void chd_set_log_level(struct crystalhd_adp *adp, char *arg)
724 if ((!arg) || (strlen(arg) < 3))
725 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA;
726 else if (!strncmp(arg, "sstep", 5))
727 g_linklog_level = BCMLOG_INFO | BCMLOG_DATA | BCMLOG_DBG |
728 BCMLOG_SSTEP | BCMLOG_ERROR;
729 else if (!strncmp(arg, "info", 4))
730 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO;
731 else if (!strncmp(arg, "debug", 5))
732 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO |
734 else if (!strncmp(arg, "pball", 5))
735 g_linklog_level = 0xFFFFFFFF & ~(BCMLOG_SPINLOCK);
736 else if (!strncmp(arg, "silent", 6))
742 struct crystalhd_adp *chd_get_adp(void)
747 static int __init chd_dec_module_init(void)
751 chd_set_log_level(NULL, "debug");
752 BCMLOG(BCMLOG_DATA, "Loading crystalhd %d.%d.%d\n",
753 crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
755 rc = pci_register_driver(&bc_chd_70012_driver);
758 BCMLOG_ERR("Could not find any devices. err:%d\n", rc);
762 module_init(chd_dec_module_init);
764 static void __exit chd_dec_module_cleanup(void)
766 BCMLOG(BCMLOG_DATA, "unloading crystalhd %d.%d.%d\n",
767 crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
769 pci_unregister_driver(&bc_chd_70012_driver);
771 module_exit(chd_dec_module_cleanup);
773 MODULE_AUTHOR("Naren Sankar <nsankar@broadcom.com>");
774 MODULE_AUTHOR("Prasad Bolisetty <prasadb@broadcom.com>");
775 MODULE_DESCRIPTION(CRYSTAL_HD_NAME);
776 MODULE_LICENSE("GPL");
777 MODULE_ALIAS("bcm70012");