net: ipa: use bitmasks for GSI IRQ values

There are seven GSI interrupt types that can be signaled by a single
GSI IRQ.  These are represented in a bitmask, and the gsi_irq_type_id
enumerated type defines what each bit position represents.

Similarly, the global and general GSI interrupt types each has a set
of conditions it signals, and both types have an enumerated type
that defines which bit that represents each condition.

When used, these enumerated values are passed as an argument to BIT()
in *all* cases.  So clean up the code a little bit by defining the
enumerated type values as one-bit masks rather than bit positions.

Rename gsi_general_id to be gsi_general_irq_id for consistency.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 19 insertions, 19 deletions

diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index f1a393829486..da90785e8df5 100644
--- a/drivers/net/ipa/gsi.c
+++ b/drivers/net/ipa/gsi.c
@@ -191,12 +191,12 @@ static void gsi_irq_type_update(struct gsi *gsi, u32 val)
 
 static void gsi_irq_type_enable(struct gsi *gsi, enum gsi_irq_type_id type_id)
 {
-	gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | BIT(type_id));
+	gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | type_id);
 }
 
 static void gsi_irq_type_disable(struct gsi *gsi, enum gsi_irq_type_id type_id)
 {
-	gsi_irq_type_update(gsi, gsi->type_enabled_bitmap & ~BIT(type_id));
+	gsi_irq_type_update(gsi, gsi->type_enabled_bitmap & ~type_id);
 }
 
 /* Event ring commands are performed one at a time.  Their completion
@@ -292,19 +292,19 @@ static void gsi_irq_enable(struct gsi *gsi)
 	/* Global interrupts include hardware error reports.  Enable
 	 * that so we can at least report the error should it occur.
 	 */
-	iowrite32(BIT(ERROR_INT), gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
-	gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | BIT(GSI_GLOB_EE));
+	iowrite32(ERROR_INT, gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
+	gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | GSI_GLOB_EE);
 
 	/* General GSI interrupts are reported to all EEs; if they occur
 	 * they are unrecoverable (without reset).  A breakpoint interrupt
 	 * also exists, but we don't support that.  We want to be notified
 	 * of errors so we can report them, even if they can't be handled.
 	 */
-	val = BIT(BUS_ERROR);
-	val |= BIT(CMD_FIFO_OVRFLOW);
-	val |= BIT(MCS_STACK_OVRFLOW);
+	val = BUS_ERROR;
+	val |= CMD_FIFO_OVRFLOW;
+	val |= MCS_STACK_OVRFLOW;
 	iowrite32(val, gsi->virt + GSI_CNTXT_GSI_IRQ_EN_OFFSET);
-	gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | BIT(GSI_GENERAL));
+	gsi_irq_type_update(gsi, gsi->type_enabled_bitmap | GSI_GENERAL);
 }
 
 /* Disable all GSI interrupt types */
@@ -1195,15 +1195,15 @@ static void gsi_isr_glob_ee(struct gsi *gsi)
 
 	val = ioread32(gsi->virt + GSI_CNTXT_GLOB_IRQ_STTS_OFFSET);
 
-	if (val & BIT(ERROR_INT))
+	if (val & ERROR_INT)
 		gsi_isr_glob_err(gsi);
 
 	iowrite32(val, gsi->virt + GSI_CNTXT_GLOB_IRQ_CLR_OFFSET);
 
-	val &= ~BIT(ERROR_INT);
+	val &= ~ERROR_INT;
 
-	if (val & BIT(GP_INT1)) {
-		val ^= BIT(GP_INT1);
+	if (val & GP_INT1) {
+		val ^= GP_INT1;
 		gsi_isr_gp_int1(gsi);
 	}
 
@@ -1264,19 +1264,19 @@ static irqreturn_t gsi_isr(int irq, void *dev_id)
 			intr_mask ^= gsi_intr;
 
 			switch (gsi_intr) {
-			case BIT(GSI_CH_CTRL):
+			case GSI_CH_CTRL:
 				gsi_isr_chan_ctrl(gsi);
 				break;
-			case BIT(GSI_EV_CTRL):
+			case GSI_EV_CTRL:
 				gsi_isr_evt_ctrl(gsi);
 				break;
-			case BIT(GSI_GLOB_EE):
+			case GSI_GLOB_EE:
 				gsi_isr_glob_ee(gsi);
 				break;
-			case BIT(GSI_IEOB):
+			case GSI_IEOB:
 				gsi_isr_ieob(gsi);
 				break;
-			case BIT(GSI_GENERAL):
+			case GSI_GENERAL:
 				gsi_isr_general(gsi);
 				break;
 			default:
@@ -1654,7 +1654,7 @@ static int gsi_generic_command(struct gsi *gsi, u32 channel_id,
 	 * channel), and only from this function.  So we enable the GP_INT1
 	 * IRQ type here, and disable it again after the command completes.
 	 */
-	val = BIT(ERROR_INT) | BIT(GP_INT1);
+	val = ERROR_INT | GP_INT1;
 	iowrite32(val, gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
 
 	/* First zero the result code field */
@@ -1672,7 +1672,7 @@ static int gsi_generic_command(struct gsi *gsi, u32 channel_id,
 	timeout = !gsi_command(gsi, GSI_GENERIC_CMD_OFFSET, val);
 
 	/* Disable the GP_INT1 IRQ type again */
-	iowrite32(BIT(ERROR_INT), gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
+	iowrite32(ERROR_INT, gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
 
 	if (!timeout)
 		return gsi->result;