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path: root/drivers/soc/qcom/smd.c
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Diffstat (limited to 'drivers/soc/qcom/smd.c')
-rw-r--r--drivers/soc/qcom/smd.c181
1 files changed, 116 insertions, 65 deletions
diff --git a/drivers/soc/qcom/smd.c b/drivers/soc/qcom/smd.c
index f9768bf..18964f1 100644
--- a/drivers/soc/qcom/smd.c
+++ b/drivers/soc/qcom/smd.c
@@ -212,7 +212,7 @@ struct qcom_smd {
* Format of the smd_info smem items, for byte aligned channels.
*/
struct smd_channel_info {
- u32 state;
+ __le32 state;
u8 fDSR;
u8 fCTS;
u8 fCD;
@@ -221,8 +221,8 @@ struct smd_channel_info {
u8 fTAIL;
u8 fSTATE;
u8 fBLOCKREADINTR;
- u32 tail;
- u32 head;
+ __le32 tail;
+ __le32 head;
};
struct smd_channel_info_pair {
@@ -234,17 +234,17 @@ struct smd_channel_info_pair {
* Format of the smd_info smem items, for word aligned channels.
*/
struct smd_channel_info_word {
- u32 state;
- u32 fDSR;
- u32 fCTS;
- u32 fCD;
- u32 fRI;
- u32 fHEAD;
- u32 fTAIL;
- u32 fSTATE;
- u32 fBLOCKREADINTR;
- u32 tail;
- u32 head;
+ __le32 state;
+ __le32 fDSR;
+ __le32 fCTS;
+ __le32 fCD;
+ __le32 fRI;
+ __le32 fHEAD;
+ __le32 fTAIL;
+ __le32 fSTATE;
+ __le32 fBLOCKREADINTR;
+ __le32 tail;
+ __le32 head;
};
struct smd_channel_info_word_pair {
@@ -252,25 +252,73 @@ struct smd_channel_info_word_pair {
struct smd_channel_info_word rx;
};
-#define GET_RX_CHANNEL_INFO(channel, param) \
- (channel->info_word ? \
- channel->info_word->rx.param : \
- channel->info->rx.param)
-
-#define SET_RX_CHANNEL_INFO(channel, param, value) \
- (channel->info_word ? \
- (channel->info_word->rx.param = value) : \
- (channel->info->rx.param = value))
-
-#define GET_TX_CHANNEL_INFO(channel, param) \
- (channel->info_word ? \
- channel->info_word->tx.param : \
- channel->info->tx.param)
-
-#define SET_TX_CHANNEL_INFO(channel, param, value) \
- (channel->info_word ? \
- (channel->info_word->tx.param = value) : \
- (channel->info->tx.param = value))
+#define GET_RX_CHANNEL_FLAG(channel, param) \
+ ({ \
+ BUILD_BUG_ON(sizeof(channel->info->rx.param) != sizeof(u8)); \
+ channel->info_word ? \
+ le32_to_cpu(channel->info_word->rx.param) : \
+ channel->info->rx.param; \
+ })
+
+#define GET_RX_CHANNEL_INFO(channel, param) \
+ ({ \
+ BUILD_BUG_ON(sizeof(channel->info->rx.param) != sizeof(u32)); \
+ le32_to_cpu(channel->info_word ? \
+ channel->info_word->rx.param : \
+ channel->info->rx.param); \
+ })
+
+#define SET_RX_CHANNEL_FLAG(channel, param, value) \
+ ({ \
+ BUILD_BUG_ON(sizeof(channel->info->rx.param) != sizeof(u8)); \
+ if (channel->info_word) \
+ channel->info_word->rx.param = cpu_to_le32(value); \
+ else \
+ channel->info->rx.param = value; \
+ })
+
+#define SET_RX_CHANNEL_INFO(channel, param, value) \
+ ({ \
+ BUILD_BUG_ON(sizeof(channel->info->rx.param) != sizeof(u32)); \
+ if (channel->info_word) \
+ channel->info_word->rx.param = cpu_to_le32(value); \
+ else \
+ channel->info->rx.param = cpu_to_le32(value); \
+ })
+
+#define GET_TX_CHANNEL_FLAG(channel, param) \
+ ({ \
+ BUILD_BUG_ON(sizeof(channel->info->tx.param) != sizeof(u8)); \
+ channel->info_word ? \
+ le32_to_cpu(channel->info_word->tx.param) : \
+ channel->info->tx.param; \
+ })
+
+#define GET_TX_CHANNEL_INFO(channel, param) \
+ ({ \
+ BUILD_BUG_ON(sizeof(channel->info->tx.param) != sizeof(u32)); \
+ le32_to_cpu(channel->info_word ? \
+ channel->info_word->tx.param : \
+ channel->info->tx.param); \
+ })
+
+#define SET_TX_CHANNEL_FLAG(channel, param, value) \
+ ({ \
+ BUILD_BUG_ON(sizeof(channel->info->tx.param) != sizeof(u8)); \
+ if (channel->info_word) \
+ channel->info_word->tx.param = cpu_to_le32(value); \
+ else \
+ channel->info->tx.param = value; \
+ })
+
+#define SET_TX_CHANNEL_INFO(channel, param, value) \
+ ({ \
+ BUILD_BUG_ON(sizeof(channel->info->tx.param) != sizeof(u32)); \
+ if (channel->info_word) \
+ channel->info_word->tx.param = cpu_to_le32(value); \
+ else \
+ channel->info->tx.param = cpu_to_le32(value); \
+ })
/**
* struct qcom_smd_alloc_entry - channel allocation entry
@@ -281,9 +329,9 @@ struct smd_channel_info_word_pair {
*/
struct qcom_smd_alloc_entry {
u8 name[20];
- u32 cid;
- u32 flags;
- u32 ref_count;
+ __le32 cid;
+ __le32 flags;
+ __le32 ref_count;
} __packed;
#define SMD_CHANNEL_FLAGS_EDGE_MASK 0xff
@@ -312,14 +360,14 @@ static void qcom_smd_signal_channel(struct qcom_smd_channel *channel)
static void qcom_smd_channel_reset(struct qcom_smd_channel *channel)
{
SET_TX_CHANNEL_INFO(channel, state, SMD_CHANNEL_CLOSED);
- SET_TX_CHANNEL_INFO(channel, fDSR, 0);
- SET_TX_CHANNEL_INFO(channel, fCTS, 0);
- SET_TX_CHANNEL_INFO(channel, fCD, 0);
- SET_TX_CHANNEL_INFO(channel, fRI, 0);
- SET_TX_CHANNEL_INFO(channel, fHEAD, 0);
- SET_TX_CHANNEL_INFO(channel, fTAIL, 0);
- SET_TX_CHANNEL_INFO(channel, fSTATE, 1);
- SET_TX_CHANNEL_INFO(channel, fBLOCKREADINTR, 1);
+ SET_TX_CHANNEL_FLAG(channel, fDSR, 0);
+ SET_TX_CHANNEL_FLAG(channel, fCTS, 0);
+ SET_TX_CHANNEL_FLAG(channel, fCD, 0);
+ SET_TX_CHANNEL_FLAG(channel, fRI, 0);
+ SET_TX_CHANNEL_FLAG(channel, fHEAD, 0);
+ SET_TX_CHANNEL_FLAG(channel, fTAIL, 0);
+ SET_TX_CHANNEL_FLAG(channel, fSTATE, 1);
+ SET_TX_CHANNEL_FLAG(channel, fBLOCKREADINTR, 1);
SET_TX_CHANNEL_INFO(channel, head, 0);
SET_TX_CHANNEL_INFO(channel, tail, 0);
@@ -357,12 +405,12 @@ static void qcom_smd_channel_set_state(struct qcom_smd_channel *channel,
dev_dbg(edge->smd->dev, "set_state(%s, %d)\n", channel->name, state);
- SET_TX_CHANNEL_INFO(channel, fDSR, is_open);
- SET_TX_CHANNEL_INFO(channel, fCTS, is_open);
- SET_TX_CHANNEL_INFO(channel, fCD, is_open);
+ SET_TX_CHANNEL_FLAG(channel, fDSR, is_open);
+ SET_TX_CHANNEL_FLAG(channel, fCTS, is_open);
+ SET_TX_CHANNEL_FLAG(channel, fCD, is_open);
SET_TX_CHANNEL_INFO(channel, state, state);
- SET_TX_CHANNEL_INFO(channel, fSTATE, 1);
+ SET_TX_CHANNEL_FLAG(channel, fSTATE, 1);
channel->state = state;
qcom_smd_signal_channel(channel);
@@ -397,7 +445,7 @@ static void smd_copy_from_fifo(void *_dst,
if (word_aligned) {
count /= sizeof(u32);
while (count--)
- *dst++ = readl_relaxed(src++);
+ *dst++ = __raw_readl(src++);
} else {
memcpy_fromio(_dst, _src, count);
}
@@ -493,7 +541,7 @@ static bool qcom_smd_channel_intr(struct qcom_smd_channel *channel)
{
bool need_state_scan = false;
int remote_state;
- u32 pktlen;
+ __le32 pktlen;
int avail;
int ret;
@@ -504,10 +552,10 @@ static bool qcom_smd_channel_intr(struct qcom_smd_channel *channel)
need_state_scan = true;
}
/* Indicate that we have seen any state change */
- SET_RX_CHANNEL_INFO(channel, fSTATE, 0);
+ SET_RX_CHANNEL_FLAG(channel, fSTATE, 0);
/* Signal waiting qcom_smd_send() about the interrupt */
- if (!GET_TX_CHANNEL_INFO(channel, fBLOCKREADINTR))
+ if (!GET_TX_CHANNEL_FLAG(channel, fBLOCKREADINTR))
wake_up_interruptible(&channel->fblockread_event);
/* Don't consume any data until we've opened the channel */
@@ -515,7 +563,7 @@ static bool qcom_smd_channel_intr(struct qcom_smd_channel *channel)
goto out;
/* Indicate that we've seen the new data */
- SET_RX_CHANNEL_INFO(channel, fHEAD, 0);
+ SET_RX_CHANNEL_FLAG(channel, fHEAD, 0);
/* Consume data */
for (;;) {
@@ -524,7 +572,7 @@ static bool qcom_smd_channel_intr(struct qcom_smd_channel *channel)
if (!channel->pkt_size && avail >= SMD_PACKET_HEADER_LEN) {
qcom_smd_channel_peek(channel, &pktlen, sizeof(pktlen));
qcom_smd_channel_advance(channel, SMD_PACKET_HEADER_LEN);
- channel->pkt_size = pktlen;
+ channel->pkt_size = le32_to_cpu(pktlen);
} else if (channel->pkt_size && avail >= channel->pkt_size) {
ret = qcom_smd_channel_recv_single(channel);
if (ret)
@@ -535,10 +583,10 @@ static bool qcom_smd_channel_intr(struct qcom_smd_channel *channel)
}
/* Indicate that we have seen and updated tail */
- SET_RX_CHANNEL_INFO(channel, fTAIL, 1);
+ SET_RX_CHANNEL_FLAG(channel, fTAIL, 1);
/* Signal the remote that we've consumed the data (if requested) */
- if (!GET_RX_CHANNEL_INFO(channel, fBLOCKREADINTR)) {
+ if (!GET_RX_CHANNEL_FLAG(channel, fBLOCKREADINTR)) {
/* Ensure ordering of channel info updates */
wmb();
@@ -667,7 +715,7 @@ static int qcom_smd_write_fifo(struct qcom_smd_channel *channel,
*/
int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len)
{
- u32 hdr[5] = {len,};
+ __le32 hdr[5] = { cpu_to_le32(len), };
int tlen = sizeof(hdr) + len;
int ret;
@@ -685,7 +733,7 @@ int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len)
goto out;
}
- SET_TX_CHANNEL_INFO(channel, fBLOCKREADINTR, 0);
+ SET_TX_CHANNEL_FLAG(channel, fBLOCKREADINTR, 0);
ret = wait_event_interruptible(channel->fblockread_event,
qcom_smd_get_tx_avail(channel) >= tlen ||
@@ -693,15 +741,15 @@ int qcom_smd_send(struct qcom_smd_channel *channel, const void *data, int len)
if (ret)
goto out;
- SET_TX_CHANNEL_INFO(channel, fBLOCKREADINTR, 1);
+ SET_TX_CHANNEL_FLAG(channel, fBLOCKREADINTR, 1);
}
- SET_TX_CHANNEL_INFO(channel, fTAIL, 0);
+ SET_TX_CHANNEL_FLAG(channel, fTAIL, 0);
qcom_smd_write_fifo(channel, hdr, sizeof(hdr));
qcom_smd_write_fifo(channel, data, len);
- SET_TX_CHANNEL_INFO(channel, fHEAD, 1);
+ SET_TX_CHANNEL_FLAG(channel, fHEAD, 1);
/* Ensure ordering of channel info updates */
wmb();
@@ -1055,6 +1103,7 @@ static void qcom_discover_channels(struct qcom_smd_edge *edge)
unsigned info_id;
int tbl;
int i;
+ u32 eflags, cid;
for (tbl = 0; tbl < SMD_ALLOC_TBL_COUNT; tbl++) {
alloc_tbl = qcom_smem_get(edge->remote_pid,
@@ -1064,6 +1113,7 @@ static void qcom_discover_channels(struct qcom_smd_edge *edge)
for (i = 0; i < SMD_ALLOC_TBL_SIZE; i++) {
entry = &alloc_tbl[i];
+ eflags = le32_to_cpu(entry->flags);
if (test_bit(i, edge->allocated[tbl]))
continue;
@@ -1073,14 +1123,15 @@ static void qcom_discover_channels(struct qcom_smd_edge *edge)
if (!entry->name[0])
continue;
- if (!(entry->flags & SMD_CHANNEL_FLAGS_PACKET))
+ if (!(eflags & SMD_CHANNEL_FLAGS_PACKET))
continue;
- if ((entry->flags & SMD_CHANNEL_FLAGS_EDGE_MASK) != edge->edge_id)
+ if ((eflags & SMD_CHANNEL_FLAGS_EDGE_MASK) != edge->edge_id)
continue;
- info_id = smem_items[tbl].info_base_id + entry->cid;
- fifo_id = smem_items[tbl].fifo_base_id + entry->cid;
+ cid = le32_to_cpu(entry->cid);
+ info_id = smem_items[tbl].info_base_id + cid;
+ fifo_id = smem_items[tbl].fifo_base_id + cid;
channel = qcom_smd_create_channel(edge, info_id, fifo_id, entry->name);
if (IS_ERR(channel))
generated by cgit v0.10.2 at 2024-09-19 21:27:34 (GMT)