diff options
Diffstat (limited to 'drivers/staging/dream/qdsp5/adsp_driver.c')
| -rw-r--r-- | drivers/staging/dream/qdsp5/adsp_driver.c | 643 |
1 files changed, 0 insertions, 643 deletions
diff --git a/drivers/staging/dream/qdsp5/adsp_driver.c b/drivers/staging/dream/qdsp5/adsp_driver.c deleted file mode 100644 index 28a6f8da947..00000000000 --- a/drivers/staging/dream/qdsp5/adsp_driver.c +++ /dev/null @@ -1,643 +0,0 @@ -/* arch/arm/mach-msm/qdsp5/adsp_driver.c - * - * Copyright (C) 2008 Google, Inc. - * Author: Iliyan Malchev <ibm@android.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program 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. - * - */ - -#include <linux/cdev.h> -#include <linux/fs.h> -#include <linux/list.h> -#include <linux/platform_device.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/uaccess.h> - -#include "adsp.h" - -#include <linux/msm_adsp.h> -#include <linux/android_pmem.h> - -struct adsp_pmem_region { - struct hlist_node list; - void *vaddr; - unsigned long paddr; - unsigned long kvaddr; - unsigned long len; - struct file *file; -}; - -struct adsp_device { - struct msm_adsp_module *module; - - spinlock_t event_queue_lock; - wait_queue_head_t event_wait; - struct list_head event_queue; - int abort; - - const char *name; - struct device *device; - struct cdev cdev; -}; - -static struct adsp_device *inode_to_device(struct inode *inode); - -#define __CONTAINS(r, v, l) ({ \ - typeof(r) __r = r; \ - typeof(v) __v = v; \ - typeof(v) __e = __v + l; \ - int res = __v >= __r->vaddr && \ - __e <= __r->vaddr + __r->len; \ - res; \ -}) - -#define CONTAINS(r1, r2) ({ \ - typeof(r2) __r2 = r2; \ - __CONTAINS(r1, __r2->vaddr, __r2->len); \ -}) - -#define IN_RANGE(r, v) ({ \ - typeof(r) __r = r; \ - typeof(v) __vv = v; \ - int res = ((__vv >= __r->vaddr) && \ - (__vv < (__r->vaddr + __r->len))); \ - res; \ -}) - -#define OVERLAPS(r1, r2) ({ \ - typeof(r1) __r1 = r1; \ - typeof(r2) __r2 = r2; \ - typeof(__r2->vaddr) __v = __r2->vaddr; \ - typeof(__v) __e = __v + __r2->len - 1; \ - int res = (IN_RANGE(__r1, __v) || IN_RANGE(__r1, __e)); \ - res; \ -}) - -static int adsp_pmem_check(struct msm_adsp_module *module, - void *vaddr, unsigned long len) -{ - struct adsp_pmem_region *region_elt; - struct hlist_node *node; - struct adsp_pmem_region t = { .vaddr = vaddr, .len = len }; - - hlist_for_each_entry(region_elt, node, &module->pmem_regions, list) { - if (CONTAINS(region_elt, &t) || CONTAINS(&t, region_elt) || - OVERLAPS(region_elt, &t)) { - printk(KERN_ERR "adsp: module %s:" - " region (vaddr %p len %ld)" - " clashes with registered region" - " (vaddr %p paddr %p len %ld)\n", - module->name, - vaddr, len, - region_elt->vaddr, - (void *)region_elt->paddr, - region_elt->len); - return -EINVAL; - } - } - - return 0; -} - -static int adsp_pmem_add(struct msm_adsp_module *module, - struct adsp_pmem_info *info) -{ - unsigned long paddr, kvaddr, len; - struct file *file; - struct adsp_pmem_region *region; - int rc = -EINVAL; - - mutex_lock(&module->pmem_regions_lock); - region = kmalloc(sizeof(*region), GFP_KERNEL); - if (!region) { - rc = -ENOMEM; - goto end; - } - INIT_HLIST_NODE(®ion->list); - if (get_pmem_file(info->fd, &paddr, &kvaddr, &len, &file)) { - kfree(region); - goto end; - } - - rc = adsp_pmem_check(module, info->vaddr, len); - if (rc < 0) { - put_pmem_file(file); - kfree(region); - goto end; - } - - region->vaddr = info->vaddr; - region->paddr = paddr; - region->kvaddr = kvaddr; - region->len = len; - region->file = file; - - hlist_add_head(®ion->list, &module->pmem_regions); -end: - mutex_unlock(&module->pmem_regions_lock); - return rc; -} - -static int adsp_pmem_lookup_vaddr(struct msm_adsp_module *module, void **addr, - unsigned long len, struct adsp_pmem_region **region) -{ - struct hlist_node *node; - void *vaddr = *addr; - struct adsp_pmem_region *region_elt; - - int match_count = 0; - - *region = NULL; - - /* returns physical address or zero */ - hlist_for_each_entry(region_elt, node, &module->pmem_regions, list) { - if (vaddr >= region_elt->vaddr && - vaddr < region_elt->vaddr + region_elt->len && - vaddr + len <= region_elt->vaddr + region_elt->len) { - /* offset since we could pass vaddr inside a registerd - * pmem buffer - */ - - match_count++; - if (!*region) - *region = region_elt; - } - } - - if (match_count > 1) { - printk(KERN_ERR "adsp: module %s: " - "multiple hits for vaddr %p, len %ld\n", - module->name, vaddr, len); - hlist_for_each_entry(region_elt, node, - &module->pmem_regions, list) { - if (vaddr >= region_elt->vaddr && - vaddr < region_elt->vaddr + region_elt->len && - vaddr + len <= region_elt->vaddr + region_elt->len) - printk(KERN_ERR "\t%p, %ld --> %p\n", - region_elt->vaddr, - region_elt->len, - (void *)region_elt->paddr); - } - } - - return *region ? 0 : -1; -} - -int adsp_pmem_fixup_kvaddr(struct msm_adsp_module *module, void **addr, - unsigned long *kvaddr, unsigned long len) -{ - struct adsp_pmem_region *region; - void *vaddr = *addr; - unsigned long *paddr = (unsigned long *)addr; - int ret; - - ret = adsp_pmem_lookup_vaddr(module, addr, len, ®ion); - if (ret) { - printk(KERN_ERR "adsp: not patching %s (paddr & kvaddr)," - " lookup (%p, %ld) failed\n", - module->name, vaddr, len); - return ret; - } - *paddr = region->paddr + (vaddr - region->vaddr); - *kvaddr = region->kvaddr + (vaddr - region->vaddr); - return 0; -} - -int adsp_pmem_fixup(struct msm_adsp_module *module, void **addr, - unsigned long len) -{ - struct adsp_pmem_region *region; - void *vaddr = *addr; - unsigned long *paddr = (unsigned long *)addr; - int ret; - - ret = adsp_pmem_lookup_vaddr(module, addr, len, ®ion); - if (ret) { - printk(KERN_ERR "adsp: not patching %s, lookup (%p, %ld) failed\n", - module->name, vaddr, len); - return ret; - } - - *paddr = region->paddr + (vaddr - region->vaddr); - return 0; -} - -static int adsp_verify_cmd(struct msm_adsp_module *module, - unsigned int queue_id, void *cmd_data, - size_t cmd_size) -{ - /* call the per module verifier */ - if (module->verify_cmd) - return module->verify_cmd(module, queue_id, cmd_data, - cmd_size); - else - printk(KERN_INFO "adsp: no packet verifying function " - "for task %s\n", module->name); - return 0; -} - -static long adsp_write_cmd(struct adsp_device *adev, void __user *arg) -{ - struct adsp_command_t cmd; - unsigned char buf[256]; - void *cmd_data; - long rc; - - if (copy_from_user(&cmd, (void __user *)arg, sizeof(cmd))) - return -EFAULT; - - if (cmd.len > 256) { - cmd_data = kmalloc(cmd.len, GFP_USER); - if (!cmd_data) - return -ENOMEM; - } else { - cmd_data = buf; - } - - if (copy_from_user(cmd_data, (void __user *)(cmd.data), cmd.len)) { - rc = -EFAULT; - goto end; - } - - mutex_lock(&adev->module->pmem_regions_lock); - if (adsp_verify_cmd(adev->module, cmd.queue, cmd_data, cmd.len)) { - printk(KERN_ERR "module %s: verify failed.\n", - adev->module->name); - rc = -EINVAL; - goto end; - } - rc = msm_adsp_write(adev->module, cmd.queue, cmd_data, cmd.len); -end: - mutex_unlock(&adev->module->pmem_regions_lock); - - if (cmd.len > 256) - kfree(cmd_data); - - return rc; -} - -static int adsp_events_pending(struct adsp_device *adev) -{ - unsigned long flags; - int yes; - spin_lock_irqsave(&adev->event_queue_lock, flags); - yes = !list_empty(&adev->event_queue); - spin_unlock_irqrestore(&adev->event_queue_lock, flags); - return yes || adev->abort; -} - -static int adsp_pmem_lookup_paddr(struct msm_adsp_module *module, void **addr, - struct adsp_pmem_region **region) -{ - struct hlist_node *node; - unsigned long paddr = (unsigned long)(*addr); - struct adsp_pmem_region *region_elt; - - hlist_for_each_entry(region_elt, node, &module->pmem_regions, list) { - if (paddr >= region_elt->paddr && - paddr < region_elt->paddr + region_elt->len) { - *region = region_elt; - return 0; - } - } - return -1; -} - -int adsp_pmem_paddr_fixup(struct msm_adsp_module *module, void **addr) -{ - struct adsp_pmem_region *region; - unsigned long paddr = (unsigned long)(*addr); - unsigned long *vaddr = (unsigned long *)addr; - int ret; - - ret = adsp_pmem_lookup_paddr(module, addr, ®ion); - if (ret) { - printk(KERN_ERR "adsp: not patching %s, paddr %p lookup failed\n", - module->name, vaddr); - return ret; - } - - *vaddr = (unsigned long)region->vaddr + (paddr - region->paddr); - return 0; -} - -static int adsp_patch_event(struct msm_adsp_module *module, - struct adsp_event *event) -{ - /* call the per-module msg verifier */ - if (module->patch_event) - return module->patch_event(module, event); - return 0; -} - -static long adsp_get_event(struct adsp_device *adev, void __user *arg) -{ - unsigned long flags; - struct adsp_event *data = NULL; - struct adsp_event_t evt; - int timeout; - long rc = 0; - - if (copy_from_user(&evt, arg, sizeof(struct adsp_event_t))) - return -EFAULT; - - timeout = (int)evt.timeout_ms; - - if (timeout > 0) { - rc = wait_event_interruptible_timeout( - adev->event_wait, adsp_events_pending(adev), - msecs_to_jiffies(timeout)); - if (rc == 0) - return -ETIMEDOUT; - } else { - rc = wait_event_interruptible( - adev->event_wait, adsp_events_pending(adev)); - } - if (rc < 0) - return rc; - - if (adev->abort) - return -ENODEV; - - spin_lock_irqsave(&adev->event_queue_lock, flags); - if (!list_empty(&adev->event_queue)) { - data = list_first_entry(&adev->event_queue, - struct adsp_event, list); - list_del(&data->list); - } - spin_unlock_irqrestore(&adev->event_queue_lock, flags); - - if (!data) - return -EAGAIN; - - /* DSP messages are type 0; they may contain physical addresses */ - if (data->type == 0) - adsp_patch_event(adev->module, data); - - /* map adsp_event --> adsp_event_t */ - if (evt.len < data->size) { - rc = -ETOOSMALL; - goto end; - } - if (data->msg_id != EVENT_MSG_ID) { - if (copy_to_user((void *)(evt.data), data->data.msg16, - data->size)) { - rc = -EFAULT; - goto end; - } - } else { - if (copy_to_user((void *)(evt.data), data->data.msg32, - data->size)) { - rc = -EFAULT; - goto end; - } - } - - evt.type = data->type; /* 0 --> from aDSP, 1 --> from ARM9 */ - evt.msg_id = data->msg_id; - evt.flags = data->is16; - evt.len = data->size; - if (copy_to_user(arg, &evt, sizeof(evt))) - rc = -EFAULT; -end: - kfree(data); - return rc; -} - -static long adsp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - struct adsp_device *adev = filp->private_data; - - switch (cmd) { - case ADSP_IOCTL_ENABLE: - return msm_adsp_enable(adev->module); - - case ADSP_IOCTL_DISABLE: - return msm_adsp_disable(adev->module); - - case ADSP_IOCTL_DISABLE_EVENT_RSP: - return 0; - - case ADSP_IOCTL_DISABLE_ACK: - pr_err("adsp: ADSP_IOCTL_DISABLE_ACK is not implemented.\n"); - break; - - case ADSP_IOCTL_WRITE_COMMAND: - return adsp_write_cmd(adev, (void __user *) arg); - - case ADSP_IOCTL_GET_EVENT: - return adsp_get_event(adev, (void __user *) arg); - - case ADSP_IOCTL_SET_CLKRATE: { -#if CONFIG_MSM_AMSS_VERSION==6350 - unsigned long clk_rate; - if (copy_from_user(&clk_rate, (void *) arg, sizeof(clk_rate))) - return -EFAULT; - return adsp_set_clkrate(adev->module, clk_rate); -#endif - } - - case ADSP_IOCTL_REGISTER_PMEM: { - struct adsp_pmem_info info; - if (copy_from_user(&info, (void *) arg, sizeof(info))) - return -EFAULT; - return adsp_pmem_add(adev->module, &info); - } - - case ADSP_IOCTL_ABORT_EVENT_READ: - adev->abort = 1; - wake_up(&adev->event_wait); - break; - - default: - break; - } - return -EINVAL; -} - -static int adsp_release(struct inode *inode, struct file *filp) -{ - struct adsp_device *adev = filp->private_data; - struct msm_adsp_module *module = adev->module; - struct hlist_node *node, *tmp; - struct adsp_pmem_region *region; - - pr_info("adsp_release() '%s'\n", adev->name); - - /* clear module before putting it to avoid race with open() */ - adev->module = NULL; - - mutex_lock(&module->pmem_regions_lock); - hlist_for_each_safe(node, tmp, &module->pmem_regions) { - region = hlist_entry(node, struct adsp_pmem_region, list); - hlist_del(node); - put_pmem_file(region->file); - kfree(region); - } - mutex_unlock(&module->pmem_regions_lock); - BUG_ON(!hlist_empty(&module->pmem_regions)); - - msm_adsp_put(module); - return 0; -} - -static void adsp_event(void *driver_data, unsigned id, size_t len, - void (*getevent)(void *ptr, size_t len)) -{ - struct adsp_device *adev = driver_data; - struct adsp_event *event; - unsigned long flags; - - if (len > ADSP_EVENT_MAX_SIZE) { - pr_err("adsp_event: event too large (%d bytes)\n", len); - return; - } - - event = kmalloc(sizeof(*event), GFP_ATOMIC); - if (!event) { - pr_err("adsp_event: cannot allocate buffer\n"); - return; - } - - if (id != EVENT_MSG_ID) { - event->type = 0; - event->is16 = 0; - event->msg_id = id; - event->size = len; - - getevent(event->data.msg16, len); - } else { - event->type = 1; - event->is16 = 1; - event->msg_id = id; - event->size = len; - getevent(event->data.msg32, len); - } - - spin_lock_irqsave(&adev->event_queue_lock, flags); - list_add_tail(&event->list, &adev->event_queue); - spin_unlock_irqrestore(&adev->event_queue_lock, flags); - wake_up(&adev->event_wait); -} - -static struct msm_adsp_ops adsp_ops = { - .event = adsp_event, -}; - -static int adsp_open(struct inode *inode, struct file *filp) -{ - struct adsp_device *adev; - int rc; - - rc = nonseekable_open(inode, filp); - if (rc < 0) - return rc; - - adev = inode_to_device(inode); - if (!adev) - return -ENODEV; - - pr_info("adsp_open() name = '%s'\n", adev->name); - - rc = msm_adsp_get(adev->name, &adev->module, &adsp_ops, adev); - if (rc) - return rc; - - pr_info("adsp_open() module '%s' adev %p\n", adev->name, adev); - filp->private_data = adev; - adev->abort = 0; - INIT_HLIST_HEAD(&adev->module->pmem_regions); - mutex_init(&adev->module->pmem_regions_lock); - - return 0; -} - -static unsigned adsp_device_count; -static struct adsp_device *adsp_devices; - -static struct adsp_device *inode_to_device(struct inode *inode) -{ - unsigned n = MINOR(inode->i_rdev); - if (n < adsp_device_count) { - if (adsp_devices[n].device) - return adsp_devices + n; - } - return NULL; -} - -static dev_t adsp_devno; -static struct class *adsp_class; - -static struct file_operations adsp_fops = { - .owner = THIS_MODULE, - .open = adsp_open, - .unlocked_ioctl = adsp_ioctl, - .release = adsp_release, - .llseek = no_llseek, -}; - -static void adsp_create(struct adsp_device *adev, const char *name, - struct device *parent, dev_t devt) -{ - struct device *dev; - int rc; - - dev = device_create(adsp_class, parent, devt, "%s", name); - if (IS_ERR(dev)) - return; - - init_waitqueue_head(&adev->event_wait); - INIT_LIST_HEAD(&adev->event_queue); - spin_lock_init(&adev->event_queue_lock); - - cdev_init(&adev->cdev, &adsp_fops); - adev->cdev.owner = THIS_MODULE; - - rc = cdev_add(&adev->cdev, devt, 1); - if (rc < 0) { - device_destroy(adsp_class, devt); - } else { - adev->device = dev; - adev->name = name; - } -} - -void msm_adsp_publish_cdevs(struct msm_adsp_module *modules, unsigned n) -{ - int rc; - - adsp_devices = kzalloc(sizeof(struct adsp_device) * n, GFP_KERNEL); - if (!adsp_devices) - return; - - adsp_class = class_create(THIS_MODULE, "adsp"); - if (IS_ERR(adsp_class)) - goto fail_create_class; - - rc = alloc_chrdev_region(&adsp_devno, 0, n, "adsp"); - if (rc < 0) - goto fail_alloc_region; - - adsp_device_count = n; - for (n = 0; n < adsp_device_count; n++) { - adsp_create(adsp_devices + n, - modules[n].name, &modules[n].pdev.dev, - MKDEV(MAJOR(adsp_devno), n)); - } - - return; - -fail_alloc_region: - class_unregister(adsp_class); -fail_create_class: - kfree(adsp_devices); -} |