diff options
Diffstat (limited to 'drivers/net/ipa/gsi.c')
| -rw-r--r-- | drivers/net/ipa/gsi.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c index 67e9eb8fe329..c4795249719d 100644 --- a/drivers/net/ipa/gsi.c +++ b/drivers/net/ipa/gsi.c @@ -195,6 +195,8 @@ static void gsi_irq_type_disable(struct gsi *gsi, enum gsi_irq_type_id type_id) /* Turn off all GSI interrupts initially */ static void gsi_irq_setup(struct gsi *gsi) { + u32 adjust; + /* Disable all interrupt types */ gsi_irq_type_update(gsi, 0); @@ -203,8 +205,12 @@ static void gsi_irq_setup(struct gsi *gsi) iowrite32(0, gsi->virt + GSI_CNTXT_SRC_EV_CH_IRQ_MSK_OFFSET); iowrite32(0, gsi->virt + GSI_CNTXT_GLOB_IRQ_EN_OFFSET); iowrite32(0, gsi->virt + GSI_CNTXT_SRC_IEOB_IRQ_MSK_OFFSET); - iowrite32(0, gsi->virt + GSI_INTER_EE_SRC_CH_IRQ_OFFSET); - iowrite32(0, gsi->virt + GSI_INTER_EE_SRC_EV_CH_IRQ_OFFSET); + + /* Reverse the offset adjustment for inter-EE register offsets */ + adjust = gsi->version < IPA_VERSION_4_5 ? 0 : GSI_EE_REG_ADJUST; + iowrite32(0, gsi->virt + adjust + GSI_INTER_EE_SRC_CH_IRQ_OFFSET); + iowrite32(0, gsi->virt + adjust + GSI_INTER_EE_SRC_EV_CH_IRQ_OFFSET); + iowrite32(0, gsi->virt + GSI_CNTXT_GSI_IRQ_EN_OFFSET); } @@ -2089,6 +2095,7 @@ int gsi_init(struct gsi *gsi, struct platform_device *pdev, struct device *dev = &pdev->dev; struct resource *res; resource_size_t size; + u32 adjust; int ret; gsi_validate_build(); @@ -2115,11 +2122,21 @@ int gsi_init(struct gsi *gsi, struct platform_device *pdev, return -EINVAL; } + /* Make sure we can make our pointer adjustment if necessary */ + adjust = gsi->version < IPA_VERSION_4_5 ? 0 : GSI_EE_REG_ADJUST; + if (res->start < adjust) { + dev_err(dev, "DT memory resource \"gsi\" too low (< %u)\n", + adjust); + return -EINVAL; + } + gsi->virt = ioremap(res->start, size); if (!gsi->virt) { dev_err(dev, "unable to remap \"gsi\" memory\n"); return -ENOMEM; } + /* Adjust register range pointer downward for newer IPA versions */ + gsi->virt -= adjust; init_completion(&gsi->completion); |