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lib: sbi: Simplify ipi platform operations

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Instead of having ipi_send() and ipi_clear() callbacks in
platform operations, it will be much simpler for ipi driver
to directly register these operations as a device to sbi_ipi
implementation.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Anup Patel
2021-04-22 10:27:15 +05:30
committed by Anup Patel
parent 559a8f1d3b
commit dc39c7b630
18 changed files with 72 additions and 109 deletions
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32
lib/sbi/sbi_ipi.c
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@@ -25,7 +25,7 @@ struct sbi_ipi_data {
};
static unsigned long ipi_data_off;
static const struct sbi_ipi_device *ipi_dev = NULL;
static const struct sbi_ipi_event_ops *ipi_ops_array[SBI_IPI_EVENT_MAX];
static int sbi_ipi_send(struct sbi_scratch *scratch, u32 remote_hartid,
@@ -33,7 +33,6 @@ static int sbi_ipi_send(struct sbi_scratch *scratch, u32 remote_hartid,
{
int ret;
struct sbi_scratch *remote_scratch = NULL;
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
struct sbi_ipi_data *ipi_data;
const struct sbi_ipi_event_ops *ipi_ops;
@@ -61,7 +60,9 @@ static int sbi_ipi_send(struct sbi_scratch *scratch, u32 remote_hartid,
*/
atomic_raw_set_bit(event, &ipi_data->ipi_type);
smp_wmb();
sbi_platform_ipi_send(plat, remote_hartid);
if (ipi_dev && ipi_dev->ipi_send)
ipi_dev->ipi_send(remote_hartid);
if (ipi_ops->sync)
ipi_ops->sync(scratch);
@@ -178,12 +179,12 @@ void sbi_ipi_process(void)
unsigned int ipi_event;
const struct sbi_ipi_event_ops *ipi_ops;
struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
struct sbi_ipi_data *ipi_data =
sbi_scratch_offset_ptr(scratch, ipi_data_off);
u32 hartid = current_hartid();
sbi_platform_ipi_clear(plat, hartid);
if (ipi_dev && ipi_dev->ipi_clear)
ipi_dev->ipi_clear(hartid);
ipi_type = atomic_raw_xchg_ulong(&ipi_data->ipi_type, 0);
ipi_event = 0;
@@ -201,6 +202,25 @@ skip:
};
}
void sbi_ipi_raw_send(u32 target_hart)
{
if (ipi_dev && ipi_dev->ipi_send)
ipi_dev->ipi_send(target_hart);
}
const struct sbi_ipi_device *sbi_ipi_get_device(void)
{
return ipi_dev;
}
void sbi_ipi_set_device(const struct sbi_ipi_device *dev)
{
if (!dev || ipi_dev)
return;
ipi_dev = dev;
}
int sbi_ipi_init(struct sbi_scratch *scratch, bool cold_boot)
{
int ret;