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net: ipa: inter-EE interrupts aren't always available

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The GSI inter-EE interrupts are not supported prior to IPA v3.5.
Don't attempt to initialize them in gsi_irq_setup() for hardware
that does not support them.

Originally proposed by AngeloGioacchino Del Regno.

Link: https://lore.kernel.org/netdev/20210211175015.200772-4-angelogioacchino.delregno@somainline.org
Signed-off-by: Alex Elder <elder@linaro.org>
Acked-by: AngeloGioacchino Del Regno
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Elder 2021-06-21 12:56:23 -05:00 committed by David S. Miller
parent 2afd6c8b43
commit c31d73494f
2 changed files with 12 additions and 4 deletions
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13
drivers/net/ipa/gsi.c
View File

@ -210,9 +210,16 @@ static void gsi_irq_setup(struct gsi *gsi)
iowrite32(0, gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET);
iowrite32(0, gsi->virt + GSI_CNTXT_SRC_IEOB_IRQ_MSK_OFFSET);
/* The inter-EE registers are in the non-adjusted address range */
iowrite32(0, gsi->virt_raw + GSI_INTER_EE_SRC_CH_IRQ_MSK_OFFSET);
iowrite32(0, gsi->virt_raw + GSI_INTER_EE_SRC_EV_CH_IRQ_MSK_OFFSET);
/* The inter-EE interrupts are not supported for IPA v3.0-v3.1 */
if (gsi->version > IPA_VERSION_3_1) {
u32 offset;
/* These registers are in the non-adjusted address range */
offset = GSI_INTER_EE_SRC_CH_IRQ_MSK_OFFSET;
iowrite32(0, gsi->virt_raw + offset);
offset = GSI_INTER_EE_SRC_EV_CH_IRQ_MSK_OFFSET;
iowrite32(0, gsi->virt_raw + offset);
}
iowrite32(0, gsi->virt + GSI_CNTXT_GSI_IRQ_EN_OFFSET);
}

3
drivers/net/ipa/gsi_reg.h
View File

@ -52,7 +52,8 @@
*/
#define GSI_EE_REG_ADJUST 0x0000d000 /* IPA v4.5+ */
/* The two inter-EE IRQ register offsets are relative to gsi->virt_raw */
/* The inter-EE IRQ registers are relative to gsi->virt_raw (IPA v3.5+) */
#define GSI_INTER_EE_SRC_CH_IRQ_MSK_OFFSET \
GSI_INTER_EE_N_SRC_CH_IRQ_MSK_OFFSET(GSI_EE_AP)
#define GSI_INTER_EE_N_SRC_CH_IRQ_MSK_OFFSET(ee) \