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(void __user *ud, void *dr,
120 BCMLOG_ERR("Invalid arg\n");
125 rc = copy_to_user(ud, dr, size);
127 rc = copy_from_user(dr, 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((void __user *)ua_off, io->add_cdata,
157 io->add_cdata_sz, 0);
159 BCMLOG_ERR("failed to pull add_cdata sz:%x ua_off:%x\n",
160 io->add_cdata_sz, (unsigned int)ua_off);
161 vfree(io->add_cdata);
162 io->add_cdata = NULL;
169 static int chd_dec_release_cdata(struct crystalhd_adp *adp,
170 struct crystalhd_ioctl_data *io, unsigned long ua)
172 unsigned long ua_off;
175 if (!adp || !io || !ua) {
176 BCMLOG_ERR("Invalid Arg!!\n");
180 if (io->cmd != BCM_IOC_FW_DOWNLOAD) {
181 ua_off = ua + sizeof(io->udata);
182 rc = crystalhd_user_data((void __user *)ua_off, io->add_cdata,
183 io->add_cdata_sz, 1);
186 "failed to push add_cdata sz:%x ua_off:%x\n",
187 io->add_cdata_sz, (unsigned int)ua_off);
193 vfree(io->add_cdata);
194 io->add_cdata = NULL;
200 static int chd_dec_proc_user_data(struct crystalhd_adp *adp,
201 struct crystalhd_ioctl_data *io,
202 unsigned long ua, int set)
207 if (!adp || !io || !ua) {
208 BCMLOG_ERR("Invalid Arg!!\n");
212 rc = crystalhd_user_data((void __user *)ua, &io->udata,
213 sizeof(io->udata), set);
215 BCMLOG_ERR("failed to %s iodata\n", (set ? "set" : "get"));
222 case BCM_IOC_FW_DOWNLOAD:
223 m_sz = io->udata.u.devMem.NumDwords * 4;
225 rc = chd_dec_release_cdata(adp, io, ua);
227 rc = chd_dec_fetch_cdata(adp, io, m_sz, ua);
236 static int chd_dec_api_cmd(struct crystalhd_adp *adp, unsigned long ua,
237 uint32_t uid, uint32_t cmd, crystalhd_cmd_proc func)
240 struct crystalhd_ioctl_data *temp;
241 enum BC_STATUS sts = BC_STS_SUCCESS;
243 temp = chd_dec_alloc_iodata(adp, 0);
245 BCMLOG_ERR("Failed to get iodata..\n");
252 rc = chd_dec_proc_user_data(adp, temp, ua, 0);
254 sts = func(&adp->cmds, temp);
255 if (sts == BC_STS_PENDING)
256 sts = BC_STS_NOT_IMPL;
257 temp->udata.RetSts = sts;
258 rc = chd_dec_proc_user_data(adp, temp, ua, 1);
261 chd_dec_free_iodata(adp, temp, 0);
267 static long chd_dec_ioctl(struct file *fd, unsigned int cmd, unsigned long ua)
269 struct crystalhd_adp *adp = chd_get_adp();
270 crystalhd_cmd_proc cproc;
271 struct crystalhd_user *uc;
275 BCMLOG_ERR("Invalid adp\n");
279 uc = fd->private_data;
281 BCMLOG_ERR("Failed to get uc\n");
285 mutex_lock(&chd_dec_mutex);
286 cproc = crystalhd_get_cmd_proc(&adp->cmds, cmd, uc);
288 BCMLOG_ERR("Unhandled command: %d\n", cmd);
289 mutex_unlock(&chd_dec_mutex);
293 ret = chd_dec_api_cmd(adp, ua, uc->uid, cmd, cproc);
294 mutex_unlock(&chd_dec_mutex);
298 static int chd_dec_open(struct inode *in, struct file *fd)
300 struct crystalhd_adp *adp = chd_get_adp();
302 enum BC_STATUS sts = BC_STS_SUCCESS;
303 struct crystalhd_user *uc = NULL;
306 BCMLOG_ERR("Invalid adp\n");
310 if (adp->cfg_users >= BC_LINK_MAX_OPENS) {
311 BCMLOG(BCMLOG_INFO, "Already in use.%d\n", adp->cfg_users);
315 sts = crystalhd_user_open(&adp->cmds, &uc);
316 if (sts != BC_STS_SUCCESS) {
317 BCMLOG_ERR("cmd_user_open - %d\n", sts);
323 fd->private_data = uc;
328 static int chd_dec_close(struct inode *in, struct file *fd)
330 struct crystalhd_adp *adp = chd_get_adp();
331 struct crystalhd_user *uc;
334 BCMLOG_ERR("Invalid adp\n");
338 uc = fd->private_data;
340 BCMLOG_ERR("Failed to get uc\n");
344 crystalhd_user_close(&adp->cmds, uc);
351 static const struct file_operations chd_dec_fops = {
352 .owner = THIS_MODULE,
353 .unlocked_ioctl = chd_dec_ioctl,
354 .open = chd_dec_open,
355 .release = chd_dec_close,
356 .llseek = noop_llseek,
359 static int chd_dec_init_chdev(struct crystalhd_adp *adp)
361 struct crystalhd_ioctl_data *temp;
363 int rc = -ENODEV, i = 0;
368 adp->chd_dec_major = register_chrdev(0, CRYSTALHD_API_NAME,
370 if (adp->chd_dec_major < 0) {
371 BCMLOG_ERR("Failed to create config dev\n");
372 rc = adp->chd_dec_major;
376 /* register crystalhd class */
377 crystalhd_class = class_create(THIS_MODULE, "crystalhd");
378 if (IS_ERR(crystalhd_class)) {
379 rc = PTR_ERR(crystalhd_class);
380 BCMLOG_ERR("failed to create class\n");
381 goto class_create_fail;
384 dev = device_create(crystalhd_class, NULL,
385 MKDEV(adp->chd_dec_major, 0), NULL, "crystalhd");
388 BCMLOG_ERR("failed to create device\n");
389 goto device_create_fail;
392 rc = crystalhd_create_elem_pool(adp, BC_LINK_ELEM_POOL_SZ);
394 BCMLOG_ERR("failed to create device\n");
398 /* Allocate general purpose ioctl pool. */
399 for (i = 0; i < CHD_IODATA_POOL_SZ; i++) {
400 temp = kzalloc(sizeof(struct crystalhd_ioctl_data),
403 BCMLOG_ERR("ioctl data pool kzalloc failed\n");
407 /* Add to global pool.. */
408 chd_dec_free_iodata(adp, temp, 0);
414 crystalhd_delete_elem_pool(adp);
416 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
418 class_destroy(crystalhd_class);
420 unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
425 static void chd_dec_release_chdev(struct crystalhd_adp *adp)
427 struct crystalhd_ioctl_data *temp = NULL;
431 if (adp->chd_dec_major > 0) {
432 /* unregister crystalhd class */
433 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
434 unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
435 BCMLOG(BCMLOG_INFO, "released api device - %d\n",
437 class_destroy(crystalhd_class);
439 adp->chd_dec_major = 0;
441 /* Clear iodata pool.. */
443 temp = chd_dec_alloc_iodata(adp, 0);
447 crystalhd_delete_elem_pool(adp);
450 static int chd_pci_reserve_mem(struct crystalhd_adp *pinfo)
453 unsigned long bar2 = pci_resource_start(pinfo->pdev, 2);
454 uint32_t mem_len = pci_resource_len(pinfo->pdev, 2);
455 unsigned long bar0 = pci_resource_start(pinfo->pdev, 0);
456 uint32_t i2o_len = pci_resource_len(pinfo->pdev, 0);
458 BCMLOG(BCMLOG_SSTEP, "bar2:0x%lx-0x%08x bar0:0x%lx-0x%08x\n",
459 bar2, mem_len, bar0, i2o_len);
461 rc = check_mem_region(bar2, mem_len);
463 BCMLOG_ERR("No valid mem region...\n");
467 pinfo->addr = ioremap_nocache(bar2, mem_len);
469 BCMLOG_ERR("Failed to remap mem region...\n");
473 pinfo->pci_mem_start = bar2;
474 pinfo->pci_mem_len = mem_len;
476 rc = check_mem_region(bar0, i2o_len);
478 BCMLOG_ERR("No valid mem region...\n");
482 pinfo->i2o_addr = ioremap_nocache(bar0, i2o_len);
483 if (!pinfo->i2o_addr) {
484 BCMLOG_ERR("Failed to remap mem region...\n");
488 pinfo->pci_i2o_start = bar0;
489 pinfo->pci_i2o_len = i2o_len;
491 rc = pci_request_regions(pinfo->pdev, pinfo->name);
493 BCMLOG_ERR("Region request failed: %d\n", rc);
497 BCMLOG(BCMLOG_SSTEP, "Mapped addr:0x%08lx i2o_addr:0x%08lx\n",
498 (unsigned long)pinfo->addr, (unsigned long)pinfo->i2o_addr);
503 static void chd_pci_release_mem(struct crystalhd_adp *pinfo)
509 iounmap(pinfo->addr);
512 iounmap(pinfo->i2o_addr);
514 pci_release_regions(pinfo->pdev);
518 static void chd_dec_pci_remove(struct pci_dev *pdev)
520 struct crystalhd_adp *pinfo;
521 enum BC_STATUS sts = BC_STS_SUCCESS;
523 pinfo = pci_get_drvdata(pdev);
525 BCMLOG_ERR("could not get adp\n");
529 sts = crystalhd_delete_cmd_context(&pinfo->cmds);
530 if (sts != BC_STS_SUCCESS)
531 BCMLOG_ERR("cmd delete :%d\n", sts);
533 chd_dec_release_chdev(pinfo);
535 chd_dec_disable_int(pinfo);
537 chd_pci_release_mem(pinfo);
538 pci_disable_device(pinfo->pdev);
544 static int chd_dec_pci_probe(struct pci_dev *pdev,
545 const struct pci_device_id *entry)
547 struct crystalhd_adp *pinfo;
549 enum BC_STATUS sts = BC_STS_SUCCESS;
552 "PCI_INFO: Vendor:0x%04x Device:0x%04x s_vendor:0x%04x s_device: 0x%04x\n",
553 pdev->vendor, pdev->device, pdev->subsystem_vendor,
554 pdev->subsystem_device);
556 pinfo = kzalloc(sizeof(struct crystalhd_adp), GFP_KERNEL);
558 BCMLOG_ERR("Failed to allocate memory\n");
564 rc = pci_enable_device(pdev);
566 BCMLOG_ERR("Failed to enable PCI device\n");
570 snprintf(pinfo->name, sizeof(pinfo->name), "crystalhd_pci_e:%d:%d:%d",
571 pdev->bus->number, PCI_SLOT(pdev->devfn),
572 PCI_FUNC(pdev->devfn));
574 rc = chd_pci_reserve_mem(pinfo);
576 BCMLOG_ERR("Failed to setup memory regions.\n");
577 pci_disable_device(pdev);
583 pinfo->drv_data = entry->driver_data;
585 /* Setup adapter level lock.. */
586 spin_lock_init(&pinfo->lock);
588 /* setup api stuff.. */
589 chd_dec_init_chdev(pinfo);
590 rc = chd_dec_enable_int(pinfo);
592 BCMLOG_ERR("_enable_int err:%d\n", rc);
593 pci_disable_device(pdev);
598 /* Set dma mask... */
599 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
600 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
602 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
603 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
606 BCMLOG_ERR("Unabled to setup DMA %d\n", rc);
607 pci_disable_device(pdev);
612 sts = crystalhd_setup_cmd_context(&pinfo->cmds, pinfo);
613 if (sts != BC_STS_SUCCESS) {
614 BCMLOG_ERR("cmd setup :%d\n", sts);
615 pci_disable_device(pdev);
620 pci_set_master(pdev);
622 pci_set_drvdata(pdev, pinfo);
634 static int chd_dec_pci_suspend(struct pci_dev *pdev, pm_message_t state)
636 struct crystalhd_adp *adp;
637 struct crystalhd_ioctl_data *temp;
638 enum BC_STATUS sts = BC_STS_SUCCESS;
640 adp = pci_get_drvdata(pdev);
642 BCMLOG_ERR("could not get adp\n");
646 temp = chd_dec_alloc_iodata(adp, false);
648 BCMLOG_ERR("could not get ioctl data\n");
652 sts = crystalhd_suspend(&adp->cmds, temp);
653 if (sts != BC_STS_SUCCESS) {
654 BCMLOG_ERR("BCM70012 Suspend %d\n", sts);
658 chd_dec_free_iodata(adp, temp, false);
659 chd_dec_disable_int(adp);
660 pci_save_state(pdev);
662 /* Disable IO/bus master/irq router */
663 pci_disable_device(pdev);
664 pci_set_power_state(pdev, pci_choose_state(pdev, state));
668 static int chd_dec_pci_resume(struct pci_dev *pdev)
670 struct crystalhd_adp *adp;
671 enum BC_STATUS sts = BC_STS_SUCCESS;
674 adp = pci_get_drvdata(pdev);
676 BCMLOG_ERR("could not get adp\n");
680 pci_set_power_state(pdev, PCI_D0);
681 pci_restore_state(pdev);
683 /* device's irq possibly is changed, driver should take care */
684 if (pci_enable_device(pdev)) {
685 BCMLOG_ERR("Failed to enable PCI device\n");
689 pci_set_master(pdev);
691 rc = chd_dec_enable_int(adp);
693 BCMLOG_ERR("_enable_int err:%d\n", rc);
694 pci_disable_device(pdev);
698 sts = crystalhd_resume(&adp->cmds);
699 if (sts != BC_STS_SUCCESS) {
700 BCMLOG_ERR("BCM70012 Resume %d\n", sts);
701 pci_disable_device(pdev);
709 static const struct pci_device_id chd_dec_pci_id_table[] = {
710 { PCI_VDEVICE(BROADCOM, 0x1612), 8 },
713 MODULE_DEVICE_TABLE(pci, chd_dec_pci_id_table);
715 static struct pci_driver bc_chd_70012_driver = {
716 .name = "Broadcom 70012 Decoder",
717 .probe = chd_dec_pci_probe,
718 .remove = chd_dec_pci_remove,
719 .id_table = chd_dec_pci_id_table,
721 .suspend = chd_dec_pci_suspend,
722 .resume = chd_dec_pci_resume
726 void chd_set_log_level(struct crystalhd_adp *adp, char *arg)
728 if ((!arg) || (strlen(arg) < 3))
729 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA;
730 else if (!strncmp(arg, "sstep", 5))
731 g_linklog_level = BCMLOG_INFO | BCMLOG_DATA | BCMLOG_DBG |
732 BCMLOG_SSTEP | BCMLOG_ERROR;
733 else if (!strncmp(arg, "info", 4))
734 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO;
735 else if (!strncmp(arg, "debug", 5))
736 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO |
738 else if (!strncmp(arg, "pball", 5))
739 g_linklog_level = 0xFFFFFFFF & ~(BCMLOG_SPINLOCK);
740 else if (!strncmp(arg, "silent", 6))
746 struct crystalhd_adp *chd_get_adp(void)
751 static int __init chd_dec_module_init(void)
755 chd_set_log_level(NULL, "debug");
756 BCMLOG(BCMLOG_DATA, "Loading crystalhd %d.%d.%d\n",
757 crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
759 rc = pci_register_driver(&bc_chd_70012_driver);
762 BCMLOG_ERR("Could not find any devices. err:%d\n", rc);
766 module_init(chd_dec_module_init);
768 static void __exit chd_dec_module_cleanup(void)
770 BCMLOG(BCMLOG_DATA, "unloading crystalhd %d.%d.%d\n",
771 crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
773 pci_unregister_driver(&bc_chd_70012_driver);
775 module_exit(chd_dec_module_cleanup);
777 MODULE_AUTHOR("Naren Sankar <nsankar@broadcom.com>");
778 MODULE_AUTHOR("Prasad Bolisetty <prasadb@broadcom.com>");
779 MODULE_DESCRIPTION(CRYSTAL_HD_NAME);
780 MODULE_LICENSE("GPL");
781 MODULE_ALIAS("bcm70012");