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mailbox: ti-msgmgr: Change message count mask to be descriptor based

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Change mask used to extract the message count to be descriptor based.

This is to support changes for count location for various SoC
solutions.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Nishanth Menon 2018-07-16 13:06:04 -05:00 committed by Jassi Brar
parent 5ab935e194
commit 8e56086292
1 changed files with 18 additions and 7 deletions
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25
drivers/mailbox/ti-msgmgr.c
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@ -44,6 +44,7 @@ struct ti_msgmgr_valid_queue_desc {
* @max_messages: Number of messages
* @data_first_reg: First data register for proxy data region
* @data_last_reg: Last data register for proxy data region
* @status_cnt_mask: Mask for getting the status value
* @tx_polled: Do I need to use polled mechanism for tx
* @tx_poll_timeout_ms: Timeout in ms if polled
* @valid_queues: List of Valid queues that the processor can access
@ -58,6 +59,7 @@ struct ti_msgmgr_desc {
u8 max_messages;
u8 data_first_reg;
u8 data_last_reg;
u32 status_cnt_mask;
bool tx_polled;
int tx_poll_timeout_ms;
const struct ti_msgmgr_valid_queue_desc *valid_queues;
@ -116,20 +118,24 @@ struct ti_msgmgr_inst {
/**
* ti_msgmgr_queue_get_num_messages() - Get the number of pending messages
* @d: Description of message manager
* @qinst: Queue instance for which we check the number of pending messages
*
* Return: number of messages pending in the queue (0 == no pending messages)
*/
static inline int ti_msgmgr_queue_get_num_messages(struct ti_queue_inst *qinst)
static inline int
ti_msgmgr_queue_get_num_messages(const struct ti_msgmgr_desc *d,
struct ti_queue_inst *qinst)
{
u32 val;
u32 status_cnt_mask = d->status_cnt_mask;
/*
* We cannot use relaxed operation here - update may happen
* real-time.
*/
val = readl(qinst->queue_state) & Q_STATE_ENTRY_COUNT_MASK;
val >>= __ffs(Q_STATE_ENTRY_COUNT_MASK);
val = readl(qinst->queue_state) & status_cnt_mask;
val >>= __ffs(status_cnt_mask);
return val;
}
@ -167,8 +173,9 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p)
return IRQ_NONE;
}
desc = inst->desc;
/* Do I actually have messages to read? */
msg_count = ti_msgmgr_queue_get_num_messages(qinst);
msg_count = ti_msgmgr_queue_get_num_messages(desc, qinst);
if (!msg_count) {
/* Shared IRQ? */
dev_dbg(dev, "Spurious event - 0 pending data!\n");
@ -181,7 +188,6 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p)
* of how many bytes I should be reading. Let the client figure this
* out.. I just read the full message and pass it on..
*/
desc = inst->desc;
message.len = desc->max_message_size;
message.buf = (u8 *)qinst->rx_buff;
@ -224,12 +230,14 @@ static irqreturn_t ti_msgmgr_queue_rx_interrupt(int irq, void *p)
static bool ti_msgmgr_queue_peek_data(struct mbox_chan *chan)
{
struct ti_queue_inst *qinst = chan->con_priv;
struct device *dev = chan->mbox->dev;
struct ti_msgmgr_inst *inst = dev_get_drvdata(dev);
int msg_count;
if (qinst->is_tx)
return false;
msg_count = ti_msgmgr_queue_get_num_messages(qinst);
msg_count = ti_msgmgr_queue_get_num_messages(inst->desc, qinst);
return msg_count ? true : false;
}
@ -243,12 +251,14 @@ static bool ti_msgmgr_queue_peek_data(struct mbox_chan *chan)
static bool ti_msgmgr_last_tx_done(struct mbox_chan *chan)
{
struct ti_queue_inst *qinst = chan->con_priv;
struct device *dev = chan->mbox->dev;
struct ti_msgmgr_inst *inst = dev_get_drvdata(dev);
int msg_count;
if (!qinst->is_tx)
return false;
msg_count = ti_msgmgr_queue_get_num_messages(qinst);
msg_count = ti_msgmgr_queue_get_num_messages(inst->desc, qinst);
/* if we have any messages pending.. */
return msg_count ? false : true;
@ -523,6 +533,7 @@ static const struct ti_msgmgr_desc k2g_desc = {
.max_messages = 128,
.data_first_reg = 16,
.data_last_reg = 31,
.status_cnt_mask = Q_STATE_ENTRY_COUNT_MASK,
.tx_polled = false,
.valid_queues = k2g_valid_queues,
.num_valid_queues = ARRAY_SIZE(k2g_valid_queues),