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net: ipa: pass a value to gsi_irq_type_update() 

Now that all of the GSI interrupts are handled uniformly,
change gsi_irq_type_update() so it takes a value.  Have the
function assign that value to the cached mask of enabled GSI
IRQ types before writing it to hardware.

Note that gsi_irq_teardown() will only be called after
gsi_irq_disable(), so it's not necessary for the former
to disable all IRQ types.  Get rid of that.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alex Elder 2020-11-05 12:14:07 -06:00 committed by Jakub Kicinski
parent 352f26a886
commit 8194be79fb
1 changed files with 13 additions and 18 deletions
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31
drivers/net/ipa/gsi.c
View File

@ -231,30 +231,29 @@ static u32 gsi_channel_id(struct gsi_channel *channel)
}
/* Update the GSI IRQ type register with the cached value */
static void gsi_irq_type_update(struct gsi *gsi)
static void gsi_irq_type_update(struct gsi *gsi, u32 val)
{
iowrite32(gsi->type_enabled_bitmap,
gsi->virt + GSI_CNTXT_TYPE_IRQ_MSK_OFFSET);
gsi->type_enabled_bitmap = val;
iowrite32(val, gsi->virt + GSI_CNTXT_TYPE_IRQ_MSK_OFFSET);
}
static void gsi_irq_type_enable(struct gsi *gsi, enum gsi_irq_type_id type_id)
{
gsi->type_enabled_bitmap |= BIT(type_id);
gsi_irq_type_update(gsi);
gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | BIT(type_id));
}
static void gsi_irq_type_disable(struct gsi *gsi, enum gsi_irq_type_id type_id)
{
gsi->type_enabled_bitmap &= ~BIT(type_id);
gsi_irq_type_update(gsi);
gsi_irq_type_update(gsi, gsi->type_enabled_bitmap & ~BIT(type_id));
}
/* Turn off all GSI interrupts initially */
static void gsi_irq_setup(struct gsi *gsi)
{
gsi->type_enabled_bitmap = 0;
gsi_irq_type_update(gsi);
/* Disable all interrupt types */
gsi_irq_type_update(gsi, 0);
/* Clear all type-specific interrupt masks */
iowrite32(0, gsi->virt + GSI_CNTXT_SRC_CH_IRQ_MSK_OFFSET);
iowrite32(0, gsi->virt + GSI_CNTXT_SRC_EV_CH_IRQ_MSK_OFFSET);
iowrite32(0, gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
@ -267,8 +266,7 @@ static void gsi_irq_setup(struct gsi *gsi)
/* Turn off all GSI interrupts when we're all done */
static void gsi_irq_teardown(struct gsi *gsi)
{
gsi->type_enabled_bitmap = 0;
gsi_irq_type_update(gsi);
/* Nothing to do */
}
static void gsi_irq_ieob_enable(struct gsi *gsi, u32 evt_ring_id)
@ -308,7 +306,7 @@ static void gsi_irq_enable(struct gsi *gsi)
* that so we can at least report the error should it occur.
*/
iowrite32(ERROR_INT_FMASK, gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
gsi->type_enabled_bitmap |= BIT(GSI_GLOB_EE);
gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | BIT(GSI_GLOB_EE));
/* General GSI interrupts are reported to all EEs; if they occur
* they are unrecoverable (without reset). A breakpoint interrupt
@ -319,18 +317,15 @@ static void gsi_irq_enable(struct gsi *gsi)
val |= CMD_FIFO_OVRFLOW_FMASK;
val |= MCS_STACK_OVRFLOW_FMASK;
iowrite32(val, gsi->virt + GSI_CNTXT_GSI_IRQ_EN_OFFSET);
gsi->type_enabled_bitmap |= BIT(GSI_GENERAL);
/* Finally update the interrupt types we want enabled */
gsi_irq_type_update(gsi);
gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | BIT(GSI_GENERAL));
}
/* Disable all GSI interrupt types */
static void gsi_irq_disable(struct gsi *gsi)
{
gsi->type_enabled_bitmap = 0;
gsi_irq_type_update(gsi);
gsi_irq_type_update(gsi, 0);
/* Clear the type-specific interrupt masks set by gsi_irq_enable() */
iowrite32(0, gsi->virt + GSI_CNTXT_GSI_IRQ_EN_OFFSET);
iowrite32(0, gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
}