static void sci_glb_unlock(unsigned long *flags, unsigned long *hw_flags)
{
if (arch_get_hwlock(HWLOCK_GLB))
hwspin_unlock_irqrestore(arch_get_hwlock(HWLOCK_GLB), flags);
else
arch_hwunlock_fast(HWLOCK_GLB);
}
/**
* qcom_smem_get() - resolve ptr of size of a smem item
* @host: the remote processor, or -1
* @item: smem item handle
* @size: pointer to be filled out with size of the item
*
* Looks up smem item and returns pointer to it. Size of smem
* item is returned in @size.
*/
void *qcom_smem_get(unsigned host, unsigned item, size_t *size)
{
unsigned long flags;
int ret;
void *ptr = ERR_PTR(-EPROBE_DEFER);
if (!__smem)
return ptr;
ret = hwspin_lock_timeout_irqsave(__smem->hwlock,
HWSPINLOCK_TIMEOUT,
&flags);
if (ret)
return ERR_PTR(ret);
if (host < SMEM_HOST_COUNT && __smem->partitions[host])
ptr = qcom_smem_get_private(__smem, host, item, size);
else
ptr = qcom_smem_get_global(__smem, item, size);
hwspin_unlock_irqrestore(__smem->hwlock, &flags);
return ptr;
}
/**
* qcom_smem_alloc() - allocate space for a smem item
* @host: remote processor id, or -1
* @item: smem item handle
* @size: number of bytes to be allocated
*
* Allocate space for a given smem item of size @size, given that the item is
* not yet allocated.
*/
int qcom_smem_alloc(unsigned host, unsigned item, size_t size)
{
unsigned long flags;
int ret;
if (!__smem)
return -EPROBE_DEFER;
if (item < SMEM_ITEM_LAST_FIXED) {
dev_err(__smem->dev,
"Rejecting allocation of static entry %d\n", item);
return -EINVAL;
}
ret = hwspin_lock_timeout_irqsave(__smem->hwlock,
HWSPINLOCK_TIMEOUT,
&flags);
if (ret)
return ret;
if (host < SMEM_HOST_COUNT && __smem->partitions[host])
ret = qcom_smem_alloc_private(__smem, host, item, size);
else
ret = qcom_smem_alloc_global(__smem, item, size);
hwspin_unlock_irqrestore(__smem->hwlock, &flags);
return ret;
}
static inline void hi3630_srcup_reg_write(struct hi3630_srcup_data *pdata,
unsigned int reg, unsigned int value)
{
unsigned long flag = 0;
BUG_ON(NULL == pdata);
if (hwspin_lock_timeout_irqsave(pdata->hwlock, HWLOCK_WAIT_TIME, &flag)) {
loge("%s: hwspinlock timeout!\n", __func__);
return;
}
hi3630_asp_irq_write(pdata->hi3630_asp_irq, reg, value);
hwspin_unlock_irqrestore(pdata->hwlock, &flag);
}
static inline int hi3630_srcup_reg_read(struct hi3630_srcup_data *pdata, unsigned int reg)
{
unsigned long flag = 0;
int ret = 0;
BUG_ON(NULL == pdata);
if (hwspin_lock_timeout_irqsave(pdata->hwlock, HWLOCK_WAIT_TIME, &flag)) {
loge("%s: hwspinlock timeout!\n", __func__);
return ret;
}
ret = hi3630_asp_irq_read(pdata->hi3630_asp_irq, reg);
hwspin_unlock_irqrestore(pdata->hwlock, &flag);
return ret;
}
static void smem_debug_read_mem(struct seq_file *s)
{
u32 *info;
size_t size;
int ret, i;
long flags;
info = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_HEAP_INFO, &size);
if (IS_ERR(info))
seq_printf(s, "Can't get global heap information pool\n");
else {
seq_printf(s, "global heap\n");
seq_printf(s, " initialized: %d offset: %08x avail: %08x\n",
info[0], info[1], info[2]);
for (i = 0; i < 512; i++) {
info = qcom_smem_get(QCOM_SMEM_HOST_ANY, i, &size);
if (IS_ERR(info))
continue;
seq_printf(s, " [%d]: p: %p s: %li\n", i, info,
size);
}
}
seq_printf(s, "\nSecure partitions accessible from APPS:\n");
ret = hwspin_lock_timeout_irqsave(__smem->hwlock,
HWSPINLOCK_TIMEOUT,
&flags);
for (i = 0; i < SMEM_HOST_COUNT; i++) {
struct smem_partition_header *part_hdr = __smem->partitions[i];
void *p;
if (!part_hdr)
continue;
if (part_hdr->magic != SMEM_PART_MAGIC) {
seq_printf(s, " part[%d]: incorrect magic\n", i);
continue;
}
seq_printf(s, " part[%d]: (%d <-> %d) size: %d off: %08x\n",
i, part_hdr->host0, part_hdr->host1, part_hdr->size,
part_hdr->offset_free_uncached);
p = (void *)part_hdr + sizeof(*part_hdr);
while (p < (void *)part_hdr + part_hdr->offset_free_uncached) {
struct smem_private_entry *entry = p;
seq_printf(s,
" [%d]: %s size: %d pd: %d\n",
entry->item,
(entry->canary == SMEM_PRIVATE_CANARY) ?
"valid" : "invalid",
entry->size,
entry->padding_data);
p += sizeof(*entry) + entry->padding_hdr + entry->size;
}
}
hwspin_unlock_irqrestore(__smem->hwlock, &flags);
}