int q6usm_us_param_buf_alloc(unsigned int dir,
struct us_client *usc,
unsigned int bufsz)
{
int rc = 0;
struct us_port_data *port = NULL;
unsigned int size = 0;
if ((usc == NULL) ||
((dir != IN) && (dir != OUT)) ||
(usc->session <= 0 || usc->session > SESSION_MAX)) {
pr_err("%s: wrong parameters: direction=%d, bufsz=%d\n",
__func__, dir, bufsz);
return -EINVAL;
}
mutex_lock(&usc->cmd_lock);
port = &usc->port[dir];
if (bufsz == 0) {
pr_debug("%s: bufsz=0, get/set param commands are forbidden\n",
__func__);
port->param_buf = NULL;
mutex_unlock(&usc->cmd_lock);
return rc;
}
port->param_buf = dma_alloc_coherent(NULL, bufsz,
&(port->param_phys), GFP_KERNEL);
if (port->param_buf == NULL) {
pr_err("%s: Parameter buffer allocation failed\n", __func__);
mutex_unlock(&usc->cmd_lock);
return -ENOMEM;
}
port->param_buf_size = bufsz;
pr_debug("%s: param_buf[%p]; param_phys[%p]; [%p]\n", __func__,
(void *)port->param_buf,
(void *)port->param_phys,
(void *)&port->param_phys);
size = (bufsz + MEM_4K_OFFSET) & MEM_4K_MASK;
rc = q6usm_memory_map(port->param_phys, (IN | OUT), size, 1,
usc->session, (uint32_t *)port->param_buf_mem_handle);
if (rc < 0) {
pr_err("%s: CMD Memory_map failed\n", __func__);
mutex_unlock(&usc->cmd_lock);
q6usm_us_client_buf_free(dir, usc);
q6usm_us_param_buf_free(dir, usc);
} else {
mutex_unlock(&usc->cmd_lock);
rc = 0;
}
return rc;
}
int q6usm_us_client_buf_alloc(unsigned int dir,
struct us_client *usc,
unsigned int bufsz,
unsigned int bufcnt)
{
int rc = 0;
struct us_port_data *port = NULL;
unsigned int size = bufsz*bufcnt;
if ((usc == NULL) ||
((dir != IN) && (dir != OUT)) || (size == 0) ||
(usc->session <= 0 || usc->session > SESSION_MAX)) {
pr_err("%s: wrong parameters: size=%d; bufcnt=%d\n",
__func__, size, bufcnt);
return -EINVAL;
}
mutex_lock(&usc->cmd_lock);
port = &usc->port[dir];
port->data = dma_alloc_coherent(NULL, size, &(port->phys), GFP_KERNEL);
if (port->data == NULL) {
pr_err("%s: US region allocation failed\n", __func__);
mutex_unlock(&usc->cmd_lock);
return -ENOMEM;
}
port->buf_cnt = bufcnt;
port->buf_size = bufsz;
pr_debug("%s: data[%p]; phys[%p]; [%p]\n", __func__,
(void *)port->data,
(void *)port->phys,
(void *)&port->phys);
size = (size + MEM_4K_OFFSET) & MEM_4K_MASK;
rc = q6usm_memory_map(port->phys, dir, size, 1, usc->session,
(uint32_t *)port->ext);
if (rc < 0) {
pr_err("%s: CMD Memory_map failed\n", __func__);
mutex_unlock(&usc->cmd_lock);
q6usm_us_client_buf_free(dir, usc);
q6usm_us_param_buf_free(dir, usc);
} else {
mutex_unlock(&usc->cmd_lock);
rc = 0;
}
return rc;
}
int q6usm_us_param_buf_alloc(unsigned int dir,
struct us_client *usc,
unsigned int bufsz)
{
int rc = 0;
struct us_port_data *port = NULL;
unsigned int size = bufsz;
size_t len;
if ((usc == NULL) ||
((dir != IN) && (dir != OUT)) ||
(usc->session <= 0 || usc->session > USM_SESSION_MAX)) {
pr_err("%s: wrong parameters: direction=%d, bufsz=%d\n",
__func__, dir, bufsz);
return -EINVAL;
}
mutex_lock(&usc->cmd_lock);
port = &usc->port[dir];
if (bufsz == 0) {
pr_debug("%s: bufsz=0, get/set param commands are forbidden\n",
__func__);
port->param_buf = NULL;
mutex_unlock(&usc->cmd_lock);
return rc;
}
/* The size to allocate should be multiple of 4K bytes */
size = PAGE_ALIGN(size);
rc = msm_audio_ion_alloc("ultrasound_client",
&port->param_client, &port->param_handle,
size, &port->param_phys,
&len, &port->param_buf);
if (rc) {
pr_err("%s: US ION allocation failed, rc = %d\n",
__func__, rc);
mutex_unlock(&usc->cmd_lock);
return -ENOMEM;
}
port->param_buf_size = bufsz;
pr_debug("%s: param_buf[%p]; param_phys[%llx]; [%p]\n", __func__,
(void *)port->param_buf,
(u64)port->param_phys,
(void *)&port->param_phys);
rc = q6usm_memory_map(port->param_phys, (IN | OUT), size, 1,
usc->session, (uint32_t *)port->param_buf_mem_handle);
if (rc < 0) {
pr_err("%s: CMD Memory_map failed\n", __func__);
mutex_unlock(&usc->cmd_lock);
q6usm_us_client_buf_free(dir, usc);
q6usm_us_param_buf_free(dir, usc);
} else {
mutex_unlock(&usc->cmd_lock);
rc = 0;
}
return rc;
}