- 根目录:
- drivers
- staging
- crystalhd
- crystalhd_lnx.c
/***************************************************************************
BCM70010 Linux driver
Copyright (c) 2005-2009, Broadcom Corporation.
This driver is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 2 of the License.
This driver is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this driver. If not, see <http://www.gnu.org/licenses/>.
***************************************************************************/
#include "crystalhd.h"
#include <linux/mutex.h>
#include <linux/slab.h>
static DEFINE_MUTEX(chd_dec_mutex);
static struct class *crystalhd_class;
static struct crystalhd_adp *g_adp_info;
static irqreturn_t chd_dec_isr(int irq, void *arg)
{
struct crystalhd_adp *adp = (struct crystalhd_adp *) arg;
int rc = 0;
if (adp)
rc = crystalhd_cmd_interrupt(&adp->cmds);
return IRQ_RETVAL(rc);
}
static int chd_dec_enable_int(struct crystalhd_adp *adp)
{
int rc = 0;
if (!adp || !adp->pdev) {
BCMLOG_ERR("Invalid arg!!\n");
return -EINVAL;
}
if (adp->pdev->msi_enabled)
adp->msi = 1;
else
adp->msi = pci_enable_msi(adp->pdev);
rc = request_irq(adp->pdev->irq, chd_dec_isr, IRQF_SHARED,
adp->name, (void *)adp);
if (rc) {
BCMLOG_ERR("Interrupt request failed..\n");
pci_disable_msi(adp->pdev);
}
return rc;
}
static int chd_dec_disable_int(struct crystalhd_adp *adp)
{
if (!adp || !adp->pdev) {
BCMLOG_ERR("Invalid arg!!\n");
return -EINVAL;
}
free_irq(adp->pdev->irq, adp);
if (adp->msi)
pci_disable_msi(adp->pdev);
return 0;
}
struct crystalhd_ioctl_data *chd_dec_alloc_iodata(struct crystalhd_adp *adp, bool isr)
{
unsigned long flags = 0;
struct crystalhd_ioctl_data *temp;
if (!adp)
return NULL;
spin_lock_irqsave(&adp->lock, flags);
temp = adp->idata_free_head;
if (temp) {
adp->idata_free_head = adp->idata_free_head->next;
memset(temp, 0, sizeof(*temp));
}
spin_unlock_irqrestore(&adp->lock, flags);
return temp;
}
void chd_dec_free_iodata(struct crystalhd_adp *adp, struct crystalhd_ioctl_data *iodata,
bool isr)
{
unsigned long flags = 0;
if (!adp || !iodata)
return;
spin_lock_irqsave(&adp->lock, flags);
iodata->next = adp->idata_free_head;
adp->idata_free_head = iodata;
spin_unlock_irqrestore(&adp->lock, flags);
}
static inline int crystalhd_user_data(unsigned long ud, void *dr, int size, int set)
{
int rc;
if (!ud || !dr) {
BCMLOG_ERR("Invalid arg\n");
return -EINVAL;
}
if (set)
rc = copy_to_user((void *)ud, dr, size);
else
rc = copy_from_user(dr, (void *)ud, size);
if (rc) {
BCMLOG_ERR("Invalid args for command\n");
rc = -EFAULT;
}
return rc;
}
static int chd_dec_fetch_cdata(struct crystalhd_adp *adp, struct crystalhd_ioctl_data *io,
uint32_t m_sz, unsigned long ua)
{
unsigned long ua_off;
int rc = 0;
if (!adp || !io || !ua || !m_sz) {
BCMLOG_ERR("Invalid Arg!!\n");
return -EINVAL;
}
io->add_cdata = vmalloc(m_sz);
if (!io->add_cdata) {
BCMLOG_ERR("kalloc fail for sz:%x\n", m_sz);
return -ENOMEM;
}
io->add_cdata_sz = m_sz;
ua_off = ua + sizeof(io->udata);
rc = crystalhd_user_data(ua_off, io->add_cdata, io->add_cdata_sz, 0);
if (rc) {
BCMLOG_ERR("failed to pull add_cdata sz:%x ua_off:%x\n",
io->add_cdata_sz, (unsigned int)ua_off);
kfree(io->add_cdata);
io->add_cdata = NULL;
return -ENODATA;
}
return rc;
}
static int chd_dec_release_cdata(struct crystalhd_adp *adp,
struct crystalhd_ioctl_data *io, unsigned long ua)
{
unsigned long ua_off;
int rc;
if (!adp || !io || !ua) {
BCMLOG_ERR("Invalid Arg!!\n");
return -EINVAL;
}
if (io->cmd != BCM_IOC_FW_DOWNLOAD) {
ua_off = ua + sizeof(io->udata);
rc = crystalhd_user_data(ua_off, io->add_cdata,
io->add_cdata_sz, 1);
if (rc) {
BCMLOG_ERR("failed to push add_cdata sz:%x ua_off:%x\n",
io->add_cdata_sz, (unsigned int)ua_off);
return -ENODATA;
}
}
if (io->add_cdata) {
vfree(io->add_cdata);
io->add_cdata = NULL;
}
return 0;
}
static int chd_dec_proc_user_data(struct crystalhd_adp *adp,
struct crystalhd_ioctl_data *io,
unsigned long ua, int set)
{
int rc;
uint32_t m_sz = 0;
if (!adp || !io || !ua) {
BCMLOG_ERR("Invalid Arg!!\n");
return -EINVAL;
}
rc = crystalhd_user_data(ua, &io->udata, sizeof(io->udata), set);
if (rc) {
BCMLOG_ERR("failed to %s iodata\n", (set ? "set" : "get"));
return rc;
}
switch (io->cmd) {
case BCM_IOC_MEM_RD:
case BCM_IOC_MEM_WR:
case BCM_IOC_FW_DOWNLOAD:
m_sz = io->udata.u.devMem.NumDwords * 4;
if (set)
rc = chd_dec_release_cdata(adp, io, ua);
else
rc = chd_dec_fetch_cdata(adp, io, m_sz, ua);
break;
default:
break;
}
return rc;
}
static int chd_dec_api_cmd(struct crystalhd_adp *adp, unsigned long ua,
uint32_t uid, uint32_t cmd, crystalhd_cmd_proc func)
{
int rc;
struct crystalhd_ioctl_data *temp;
enum BC_STATUS sts = BC_STS_SUCCESS;
temp = chd_dec_alloc_iodata(adp, 0);
if (!temp) {
BCMLOG_ERR("Failed to get iodata..\n");
return -EINVAL;
}
temp->u_id = uid;
temp->cmd = cmd;
rc = chd_dec_proc_user_data(adp, temp, ua, 0);
if (!rc) {
sts = func(&adp->cmds, temp);
if (sts == BC_STS_PENDING)
sts = BC_STS_NOT_IMPL;
temp->udata.RetSts = sts;
rc = chd_dec_proc_user_data(adp, temp, ua, 1);
}
if (temp) {
chd_dec_free_iodata(adp, temp, 0);
temp = NULL;
}
return rc;
}
/* API interfaces */
static long chd_dec_ioctl(struct file *fd, unsigned int cmd, unsigned long ua)
{
struct crystalhd_adp *adp = chd_get_adp();
crystalhd_cmd_proc cproc;
struct crystalhd_user *uc;
int ret;
if (!adp || !fd) {
BCMLOG_ERR("Invalid adp\n");
return -EINVAL;
}
uc = fd->private_data;
if (!uc) {
BCMLOG_ERR("Failed to get uc\n");
return -ENODATA;
}
mutex_lock(&chd_dec_mutex);
cproc = crystalhd_get_cmd_proc(&adp->cmds, cmd, uc);
if (!cproc) {
BCMLOG_ERR("Unhandled command: %d\n", cmd);
mutex_unlock(&chd_dec_mutex);
return -EINVAL;
}
ret = chd_dec_api_cmd(adp, ua, uc->uid, cmd, cproc);
mutex_unlock(&chd_dec_mutex);
return ret;
}
static int chd_dec_open(struct inode *in, struct file *fd)
{
struct crystalhd_adp *adp = chd_get_adp();
int rc = 0;
enum BC_STATUS sts = BC_STS_SUCCESS;
struct crystalhd_user *uc = NULL;
if (!adp) {
BCMLOG_ERR("Invalid adp\n");
return -EINVAL;
}
if (adp->cfg_users >= BC_LINK_MAX_OPENS) {
BCMLOG(BCMLOG_INFO, "Already in use.%d\n", adp->cfg_users);
return -EBUSY;
}
sts = crystalhd_user_open(&adp->cmds, &uc);
if (sts != BC_STS_SUCCESS) {
BCMLOG_ERR("cmd_user_open - %d\n", sts);
rc = -EBUSY;
}
adp->cfg_users++;
fd->private_data = uc;
return rc;
}
static int chd_dec_close(struct inode *in, struct file *fd)
{
struct crystalhd_adp *adp = chd_get_adp();
struct crystalhd_user *uc;
if (!adp) {
BCMLOG_ERR("Invalid adp\n");
return -EINVAL;
}
uc = fd->private_data;
if (!uc) {
BCMLOG_ERR("Failed to get uc\n");
return -ENODATA;
}
crystalhd_user_close(&adp->cmds, uc);
adp->cfg_users--;
return 0;
}
static const struct file_operations chd_dec_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = chd_dec_ioctl,
.open = chd_dec_open,
.release = chd_dec_close,
.llseek = noop_llseek,
};
static int chd_dec_init_chdev(struct crystalhd_adp *adp)
{
struct crystalhd_ioctl_data *temp;
struct device *dev;
int rc = -ENODEV, i = 0;
if (!adp)
goto fail;
adp->chd_dec_major = register_chrdev(0, CRYSTALHD_API_NAME,
&chd_dec_fops);
if (adp->chd_dec_major < 0) {
BCMLOG_ERR("Failed to create config dev\n");
rc = adp->chd_dec_major;
goto fail;
}
/* register crystalhd class */
crystalhd_class = class_create(THIS_MODULE, "crystalhd");
if (IS_ERR(crystalhd_class)) {
rc = PTR_ERR(crystalhd_class);
BCMLOG_ERR("failed to create class\n");
goto class_create_fail;
}
dev = device_create(crystalhd_class, NULL, MKDEV(adp->chd_dec_major, 0),
NULL, "crystalhd");
if (IS_ERR(dev)) {
rc = PTR_ERR(dev);
BCMLOG_ERR("failed to create device\n");
goto device_create_fail;
}
rc = crystalhd_create_elem_pool(adp, BC_LINK_ELEM_POOL_SZ);
if (rc) {
BCMLOG_ERR("failed to create device\n");
goto elem_pool_fail;
}
/* Allocate general purpose ioctl pool. */
for (i = 0; i < CHD_IODATA_POOL_SZ; i++) {
temp = kzalloc(sizeof(struct crystalhd_ioctl_data), GFP_KERNEL);
if (!temp) {
BCMLOG_ERR("ioctl data pool kzalloc failed\n");
rc = -ENOMEM;
goto kzalloc_fail;
}
/* Add to global pool.. */
chd_dec_free_iodata(adp, temp, 0);
}
return 0;
kzalloc_fail:
crystalhd_delete_elem_pool(adp);
elem_pool_fail:
device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
device_create_fail:
class_destroy(crystalhd_class);
class_create_fail:
unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
fail:
return rc;
}
static void chd_dec_release_chdev(struct crystalhd_adp *adp)
{
struct crystalhd_ioctl_data *temp = NULL;
if (!adp)
return;
if (adp->chd_dec_major > 0) {
/* unregister crystalhd class */
device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
BCMLOG(BCMLOG_INFO, "released api device - %d\n",
adp->chd_dec_major);
class_destroy(crystalhd_class);
}
adp->chd_dec_major = 0;
/* Clear iodata pool.. */
do {
temp = chd_dec_alloc_iodata(adp, 0);
kfree(temp);
} while (temp);
crystalhd_delete_elem_pool(adp);
}
static int chd_pci_reserve_mem(struct crystalhd_adp *pinfo)
{
int rc;
unsigned long bar2 = pci_resource_start(pinfo->pdev, 2);
uint32_t mem_len = pci_resource_len(pinfo->pdev, 2);
unsigned long bar0 = pci_resource_start(pinfo->pdev, 0);
uint32_t i2o_len = pci_resource_len(pinfo->pdev, 0);
BCMLOG(BCMLOG_SSTEP, "bar2:0x%lx-0x%08x bar0:0x%lx-0x%08x\n",
bar2, mem_len, bar0, i2o_len);
rc = check_mem_region(bar2, mem_len);
if (rc) {
BCMLOG_ERR("No valid mem region...\n");
return -ENOMEM;
}
pinfo->addr = ioremap_nocache(bar2, mem_len);
if (!pinfo->addr) {
BCMLOG_ERR("Failed to remap mem region...\n");
return -ENOMEM;
}
pinfo->pci_mem_start = bar2;
pinfo->pci_mem_len = mem_len;
rc = check_mem_region(bar0, i2o_len);
if (rc) {
BCMLOG_ERR("No valid mem region...\n");
return -ENOMEM;
}
pinfo->i2o_addr = ioremap_nocache(bar0, i2o_len);
if (!pinfo->i2o_addr) {
BCMLOG_ERR("Failed to remap mem region...\n");
return -ENOMEM;
}
pinfo->pci_i2o_start = bar0;
pinfo->pci_i2o_len = i2o_len;
rc = pci_request_regions(pinfo->pdev, pinfo->name);
if (rc < 0) {
BCMLOG_ERR("Region request failed: %d\n", rc);
return rc;
}
BCMLOG(BCMLOG_SSTEP, "Mapped addr:0x%08lx i2o_addr:0x%08lx\n",
(unsigned long)pinfo->addr, (unsigned long)pinfo->i2o_addr);
return 0;
}
static void chd_pci_release_mem(struct crystalhd_adp *pinfo)
{
if (!pinfo)
return;
if (pinfo->addr)
iounmap(pinfo->addr);
if (pinfo->i2o_addr)
iounmap(pinfo->i2o_addr);
pci_release_regions(pinfo->pdev);
}
static void chd_dec_pci_remove(struct pci_dev *pdev)
{
struct crystalhd_adp *pinfo;
enum BC_STATUS sts = BC_STS_SUCCESS;
pinfo = pci_get_drvdata(pdev);
if (!pinfo) {
BCMLOG_ERR("could not get adp\n");
return;
}
sts = crystalhd_delete_cmd_context(&pinfo->cmds);
if (sts != BC_STS_SUCCESS)
BCMLOG_ERR("cmd delete :%d\n", sts);
chd_dec_release_chdev(pinfo);
chd_dec_disable_int(pinfo);
chd_pci_release_mem(pinfo);
pci_disable_device(pinfo->pdev);
kfree(pinfo);
g_adp_info = NULL;
}
static int chd_dec_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *entry)
{
struct crystalhd_adp *pinfo;
int rc;
enum BC_STATUS sts = BC_STS_SUCCESS;
BCMLOG(BCMLOG_DBG, "PCI_INFO: Vendor:0x%04x Device:0x%04x "
"s_vendor:0x%04x s_device: 0x%04x\n",
pdev->vendor, pdev->device, pdev->subsystem_vendor,
pdev->subsystem_device);
pinfo = kzalloc(sizeof(struct crystalhd_adp), GFP_KERNEL);
if (!pinfo) {
BCMLOG_ERR("Failed to allocate memory\n");
return -ENOMEM;
}
pinfo->pdev = pdev;
rc = pci_enable_device(pdev);
if (rc) {
BCMLOG_ERR("Failed to enable PCI device\n");
goto err;
}
snprintf(pinfo->name, sizeof(pinfo->name), "crystalhd_pci_e:%d:%d:%d",
pdev->bus->number, PCI_SLOT(pdev->devfn),
PCI_FUNC(pdev->devfn));
rc = chd_pci_reserve_mem(pinfo);
if (rc) {
BCMLOG_ERR("Failed to setup memory regions.\n");
pci_disable_device(pdev);
rc = -ENOMEM;
goto err;
}
pinfo->present = 1;
pinfo->drv_data = entry->driver_data;
/* Setup adapter level lock.. */
spin_lock_init(&pinfo->lock);
/* setup api stuff.. */
chd_dec_init_chdev(pinfo);
rc = chd_dec_enable_int(pinfo);
if (rc) {
BCMLOG_ERR("_enable_int err:%d\n", rc);
pci_disable_device(pdev);
rc = -ENODEV;
goto err;
}
/* Set dma mask... */
if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
pinfo->dmabits = 64;
} else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
pinfo->dmabits = 32;
} else {
BCMLOG_ERR("Unabled to setup DMA %d\n", rc);
pci_disable_device(pdev);
rc = -ENODEV;
goto err;
}
sts = crystalhd_setup_cmd_context(&pinfo->cmds, pinfo);
if (sts != BC_STS_SUCCESS) {
BCMLOG_ERR("cmd setup :%d\n", sts);
pci_disable_device(pdev);
rc = -ENODEV;
goto err;
}
pci_set_master(pdev);
pci_set_drvdata(pdev, pinfo);
g_adp_info = pinfo;
return 0;
err:
kfree(pinfo);
return rc;
}
#ifdef CONFIG_PM
int chd_dec_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct crystalhd_adp *adp;
struct crystalhd_ioctl_data *temp;
enum BC_STATUS sts = BC_STS_SUCCESS;
adp = pci_get_drvdata(pdev);
if (!adp) {
BCMLOG_ERR("could not get adp\n");
return -ENODEV;
}
temp = chd_dec_alloc_iodata(adp, false);
if (!temp) {
BCMLOG_ERR("could not get ioctl data\n");
return -ENODEV;
}
sts = crystalhd_suspend(&adp->cmds, temp);
if (sts != BC_STS_SUCCESS) {
BCMLOG_ERR("BCM70012 Suspend %d\n", sts);
return -ENODEV;
}
chd_dec_free_iodata(adp, temp, false);
chd_dec_disable_int(adp);
pci_save_state(pdev);
/* Disable IO/bus master/irq router */
pci_disable_device(pdev);
pci_set_power_state(pdev, pci_choose_state(pdev, state));
return 0;
}
int chd_dec_pci_resume(struct pci_dev *pdev)
{
struct crystalhd_adp *adp;
enum BC_STATUS sts = BC_STS_SUCCESS;
int rc;
adp = pci_get_drvdata(pdev);
if (!adp) {
BCMLOG_ERR("could not get adp\n");
return -ENODEV;
}
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
/* device's irq possibly is changed, driver should take care */
if (pci_enable_device(pdev)) {
BCMLOG_ERR("Failed to enable PCI device\n");
return 1;
}
pci_set_master(pdev);
rc = chd_dec_enable_int(adp);
if (rc) {
BCMLOG_ERR("_enable_int err:%d\n", rc);
pci_disable_device(pdev);
return -ENODEV;
}
sts = crystalhd_resume(&adp->cmds);
if (sts != BC_STS_SUCCESS) {
BCMLOG_ERR("BCM70012 Resume %d\n", sts);
pci_disable_device(pdev);
return -ENODEV;
}
return 0;
}
#endif
static DEFINE_PCI_DEVICE_TABLE(chd_dec_pci_id_table) = {
{ PCI_VDEVICE(BROADCOM, 0x1612), 8 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, chd_dec_pci_id_table);
static struct pci_driver bc_chd_70012_driver = {
.name = "Broadcom 70012 Decoder",
.probe = chd_dec_pci_probe,
.remove = chd_dec_pci_remove,
.id_table = chd_dec_pci_id_table,
#ifdef CONFIG_PM
.suspend = chd_dec_pci_suspend,
.resume = chd_dec_pci_resume
#endif
};
void chd_set_log_level(struct crystalhd_adp *adp, char *arg)
{
if ((!arg) || (strlen(arg) < 3))
g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA;
else if (!strncmp(arg, "sstep", 5))
g_linklog_level = BCMLOG_INFO | BCMLOG_DATA | BCMLOG_DBG |
BCMLOG_SSTEP | BCMLOG_ERROR;
else if (!strncmp(arg, "info", 4))
g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO;
else if (!strncmp(arg, "debug", 5))
g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO |
BCMLOG_DBG;
else if (!strncmp(arg, "pball", 5))
g_linklog_level = 0xFFFFFFFF & ~(BCMLOG_SPINLOCK);
else if (!strncmp(arg, "silent", 6))
g_linklog_level = 0;
else
g_linklog_level = 0;
}
struct crystalhd_adp *chd_get_adp(void)
{
return g_adp_info;
}
static int __init chd_dec_module_init(void)
{
int rc;
chd_set_log_level(NULL, "debug");
BCMLOG(BCMLOG_DATA, "Loading crystalhd %d.%d.%d\n",
crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
rc = pci_register_driver(&bc_chd_70012_driver);
if (rc < 0)
BCMLOG_ERR("Could not find any devices. err:%d\n", rc);
return rc;
}
module_init(chd_dec_module_init);
static void __exit chd_dec_module_cleanup(void)
{
BCMLOG(BCMLOG_DATA, "unloading crystalhd %d.%d.%d\n",
crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
pci_unregister_driver(&bc_chd_70012_driver);
}
module_exit(chd_dec_module_cleanup);
MODULE_AUTHOR("Naren Sankar <nsankar@broadcom.com>");
MODULE_AUTHOR("Prasad Bolisetty <prasadb@broadcom.com>");
MODULE_DESCRIPTION(CRYSTAL_HD_NAME);
MODULE_LICENSE("GPL");
MODULE_ALIAS("bcm70012");