From: Nabih Estefan Diaz <nabiheste...@google.com>
Implemented GMAC IRQ Handling and added relevant trace-events
Change-Id: I7a2d3cd3f493278bcd0cf483233c1e05c37488b7
Signed-off-by: Nabih Estefan <nabiheste...@google.com>
Reviewed-by: Tyrone Ting <kft...@nuvoton.com>
---
hw/net/npcm_gmac.c | 40 ++++++++++++++++++++++++++++++++++++++++
hw/net/trace-events | 1 +
2 files changed, 41 insertions(+)
diff --git a/hw/net/npcm_gmac.c b/hw/net/npcm_gmac.c
index 98b3c33c94..44c4ffaff4 100644
--- a/hw/net/npcm_gmac.c
+++ b/hw/net/npcm_gmac.c
@@ -149,6 +149,46 @@ static bool gmac_can_receive(NetClientState *nc)
return true;
}
+/*
+ * Function that updates the GMAC IRQ
+ * It find the logical OR of the enabled bits for NIS (if enabled)
+ * It find the logical OR of the enabled bits for AIS (if enabled)
+ */
+static void gmac_update_irq(NPCMGMACState *gmac)
+{
+ /*
+ * Check if the normal interrupts summary is enabled
+ * if so, add the bits for the summary that are enabled
+ */
+ if (gmac->regs[R_NPCM_DMA_INTR_ENA] & gmac->regs[R_NPCM_DMA_STATUS] &
+ (NPCM_DMA_INTR_ENAB_NIE_BITS)) {
+ gmac->regs[R_NPCM_DMA_STATUS] |= NPCM_DMA_STATUS_NIS;
+ }
+ /*
+ * Check if the abnormal interrupts summary is enabled
+ * if so, add the bits for the summary that are enabled
+ */
+ if (gmac->regs[R_NPCM_DMA_INTR_ENA] & gmac->regs[R_NPCM_DMA_STATUS] &
+ (NPCM_DMA_INTR_ENAB_AIE_BITS)) {
+ gmac->regs[R_NPCM_DMA_STATUS] |= NPCM_DMA_STATUS_AIS;
+ }
+
+ /* Get the logical OR of both normal and abnormal interrupts */
+ int level = !!((gmac->regs[R_NPCM_DMA_STATUS] &
+ gmac->regs[R_NPCM_DMA_INTR_ENA] &
+ NPCM_DMA_STATUS_NIS) |
+ (gmac->regs[R_NPCM_DMA_STATUS] &
+ gmac->regs[R_NPCM_DMA_INTR_ENA] &
+ NPCM_DMA_STATUS_AIS));
+
+ /* Set the IRQ */
+ trace_npcm_gmac_update_irq(DEVICE(gmac)->canonical_path,
+ gmac->regs[R_NPCM_DMA_STATUS],
+ gmac->regs[R_NPCM_DMA_INTR_ENA],
+ level);
+ qemu_set_irq(gmac->irq, level);
+}
+
static ssize_t gmac_receive(NetClientState *nc, const uint8_t *buf, size_t len)
{
/* Placeholder. Function will be filled in following patches */
diff --git a/hw/net/trace-events b/hw/net/trace-events
index 33514548b8..56057de47f 100644
--- a/hw/net/trace-events
+++ b/hw/net/trace-events
@@ -473,6 +473,7 @@ npcm_gmac_reg_write(const char *name, uint64_t offset,
uint32_t value) "%s: offs
npcm_gmac_mdio_access(const char *name, uint8_t is_write, uint8_t pa, uint8_t
gr, uint16_t val) "%s: is_write: %" PRIu8 " pa: %" PRIu8 " gr: %" PRIu8 " val:
0x%04" PRIx16
npcm_gmac_reset(const char *name, uint16_t value) "%s: phy_regs[0][1]: 0x%04"
PRIx16
npcm_gmac_set_link(bool active) "Set link: active=%u"
+npcm_gmac_update_irq(const char *name, uint32_t status, uint32_t intr_en, int
level) "%s: Status Reg: 0x%04" PRIX32 " Interrupt Enable Reg: 0x%04" PRIX32 "
IRQ Set: %d"
# npcm_pcs.c
npcm_pcs_reg_read(const char *name, uint16_t indirect_access_baes, uint64_t
offset, uint16_t value) "%s: IND: 0x%02" PRIx16 " offset: 0x%04" PRIx64 "
value: 0x%04" PRIx16
--
2.43.0.275.g3460e3d667-goog
