-----Original Message-----
From: Nabih Estefan <nabiheste...@google.com>
Sent: Saturday, October 28, 2023 1:55 AM
To: peter.mayd...@linaro.org
Cc: qemu-...@nongnu.org; qemu-devel@nongnu.org; CS20 KFTing
<kft...@nuvoton.com>; wuhao...@google.com; jasonw...@redhat.com; IS20 Avi
Fishman <avi.fish...@nuvoton.com>; nabiheste...@google.com; CS20 KWLiu
<kw...@nuvoton.com>; IS20 Tomer Maimon <tomer.mai...@nuvoton.com>; IN20 Hila
Miranda-Kuzi <hila.miranda-k...@nuvoton.com>
Subject: [PATCH v5 08/11] hw/net: General GMAC Implementation
From: Nabih Estefan Diaz <nabiheste...@google.com>
- General GMAC Register handling
- GMAC IRQ Handling
- Added traces in some methods for debugging
- Lots of declarations for accessing information on GMAC Descriptors
(npcm_gmac.h file)
NOTE: With code on this state, the GMAC can boot-up properly and will show up
in the ifconfig command on the BMC
Change-Id: I2658c0cbec4a73b5cd1ea90cfdcabec9eaca1c46
Signed-off-by: Nabih Estefan <nabiheste...@google.com>
---
hw/net/npcm_gmac.c | 26 -----
include/hw/net/npcm_gmac.h | 198 ++++++++++++++++++++++++++++++++++---
2 files changed, 184 insertions(+), 40 deletions(-)
diff --git a/hw/net/npcm_gmac.c b/hw/net/npcm_gmac.c index
6f8109e0ee..220955346c 100644
--- a/hw/net/npcm_gmac.c
+++ b/hw/net/npcm_gmac.c
@@ -305,22 +305,6 @@ static void npcm_gmac_write(void *opaque, hwaddr offset,
break;
case A_NPCM_GMAC_MAC_CONFIG:
- prev = gmac->regs[offset / sizeof(uint32_t)];
- gmac->regs[offset / sizeof(uint32_t)] = v;
-
- /* If transmit is being enabled for first time, update desc addr */
- if (~(prev & NPCM_GMAC_MAC_CONFIG_TX_EN) &
- (v & NPCM_GMAC_MAC_CONFIG_TX_EN)) {
- gmac->regs[R_NPCM_DMA_HOST_TX_DESC] =
- gmac->regs[R_NPCM_DMA_TX_BASE_ADDR];
- }
-
- /* If receive is being enabled for first time, update desc addr */
- if (~(prev & NPCM_GMAC_MAC_CONFIG_RX_EN) &
- (v & NPCM_GMAC_MAC_CONFIG_RX_EN)) {
- gmac->regs[R_NPCM_DMA_HOST_RX_DESC] =
- gmac->regs[R_NPCM_DMA_RX_BASE_ADDR];
- }
break;
case A_NPCM_GMAC_MII_ADDR:
@@ -371,16 +355,6 @@ static void npcm_gmac_write(void *opaque, hwaddr offset,
"%s: Write of read-only bits of reg: offset: 0x%04"
HWADDR_PRIx ", value: 0x%04" PRIx64 "\n",
DEVICE(gmac)->canonical_path, offset, v);
- } else {
- /* for W1c bits, implement W1C */
- gmac->regs[offset / sizeof(uint32_t)] &=
- ~NPCM_DMA_STATUS_W1C_MASK(v);
- if (v & NPCM_DMA_STATUS_NIS_BITS) {
- gmac->regs[offset / sizeof(uint32_t)] &= ~NPCM_DMA_STATUS_NIS;
- }
- if (v & NPCM_DMA_STATUS_AIS_BITS) {
- gmac->regs[offset / sizeof(uint32_t)] &= ~NPCM_DMA_STATUS_AIS;
- }
}
break;
diff --git a/include/hw/net/npcm_gmac.h b/include/hw/net/npcm_gmac.h index
e5729e83ea..c97eb6fe6e 100644
--- a/include/hw/net/npcm_gmac.h
+++ b/include/hw/net/npcm_gmac.h
@@ -34,13 +34,15 @@ struct NPCMGMACRxDesc { };
/* NPCMGMACRxDesc.flags values */
-/* RDES2 and RDES3 are buffer address pointers */
-/* Owner: 0 = software, 1 = gmac */
-#define RX_DESC_RDES0_OWNER_MASK BIT(31)
+/* RDES2 and RDES3 are buffer addresses */
+/* Owner: 0 = software, 1 = dma */
+#define RX_DESC_RDES0_OWN BIT(31)
/* Destination Address Filter Fail */
-#define RX_DESC_RDES0_DEST_ADDR_FILT_FAIL_MASK BIT(30)
-/* Frame length*/
-#define RX_DESC_RDES0_FRAME_LEN_MASK(word) extract32(word, 16, 29)
+#define RX_DESC_RDES0_DEST_ADDR_FILT_FAIL BIT(30)
+/* Frame length */
+#define RX_DESC_RDES0_FRAME_LEN_MASK(word) extract32(word, 16, 14)
+/* Frame length Shift*/
+#define RX_DESC_RDES0_FRAME_LEN_SHIFT 16
/* Error Summary */
#define RX_DESC_RDES0_ERR_SUMM_MASK BIT(15)
/* Descriptor Error */
@@ -83,9 +85,9 @@ struct NPCMGMACRxDesc {
/* Receive Buffer 2 Size */
#define RX_DESC_RDES1_BFFR2_SZ_SHIFT 11 #define
RX_DESC_RDES1_BFFR2_SZ_MASK(word) extract32(word, \
- RX_DESC_RDES1_BFFR2_SZ_SHIFT, 10 + RX_DESC_RDES1_BFFR2_SZ_SHIFT)
+ RX_DESC_RDES1_BFFR2_SZ_SHIFT, 11)
/* Receive Buffer 1 Size */
-#define RX_DESC_RDES1_BFFR1_SZ_MASK(word) extract32(word, 0, 10)
+#define RX_DESC_RDES1_BFFR1_SZ_MASK(word) extract32(word, 0, 11)
struct NPCMGMACTxDesc {
@@ -96,9 +98,9 @@ struct NPCMGMACTxDesc { };
/* NPCMGMACTxDesc.flags values */
-/* TDES2 and TDES3 are buffer address pointers */
+/* TDES2 and TDES3 are buffer addresses */
/* Owner: 0 = software, 1 = gmac */
-#define TX_DESC_TDES0_OWNER_MASK BIT(31)
+#define TX_DESC_TDES0_OWN BIT(31)
/* Tx Time Stamp Status */
#define TX_DESC_TDES0_TTSS_MASK BIT(17)
/* IP Header Error */
@@ -122,7 +124,7 @@ struct NPCMGMACTxDesc {
/* VLAN Frame */
#define TX_DESC_TDES0_VLAN_FRM_MASK BIT(7)
/* Collision Count */
-#define TX_DESC_TDES0_COLL_CNT_MASK(word) extract32(word, 3, 6)
+#define TX_DESC_TDES0_COLL_CNT_MASK(word) extract32(word, 3, 4)
/* Excessive Deferral */
#define TX_DESC_TDES0_EXCS_DEF_MASK BIT(2)
/* Underflow Error */
@@ -137,7 +139,7 @@ struct NPCMGMACTxDesc {
/* Last Segment */
#define TX_DESC_TDES1_FIRST_SEG_MASK BIT(29)
/* Checksum Insertion Control */
-#define TX_DESC_TDES1_CHKSM_INS_CTRL_MASK(word) extract32(word, 27, 28)
+#define TX_DESC_TDES1_CHKSM_INS_CTRL_MASK(word) extract32(word, 27, 2)
/* Disable Cyclic Redundancy Check */
#define TX_DESC_TDES1_DIS_CDC_MASK BIT(26)
/* Transmit End of Ring */
@@ -145,9 +147,9 @@ struct NPCMGMACTxDesc {
/* Secondary Address Chained */
#define TX_DESC_TDES1_SEC_ADDR_CHND_MASK BIT(24)
/* Transmit Buffer 2 Size */
-#define TX_DESC_TDES1_BFFR2_SZ_MASK(word) extract32(word, 11, 21)
+#define TX_DESC_TDES1_BFFR2_SZ_MASK(word) extract32(word, 11, 11)
/* Transmit Buffer 1 Size */
-#define TX_DESC_TDES1_BFFR1_SZ_MASK(word) extract32(word, 0, 10)
+#define TX_DESC_TDES1_BFFR1_SZ_MASK(word) extract32(word, 0, 11)
typedef struct NPCMGMACState {
SysBusDevice parent;
@@ -165,4 +167,172 @@ typedef struct NPCMGMACState { #define TYPE_NPCM_GMAC
"npcm-gmac"
OBJECT_DECLARE_SIMPLE_TYPE(NPCMGMACState, NPCM_GMAC)
+/* Mask for RO bits in Status */
+#define NPCM_DMA_STATUS_RO_MASK(word) (word & 0xfffe0000)
+/* Mask for RO bits in Status */
+#define NPCM_DMA_STATUS_W1C_MASK(word) (word & 0x1e7ff)
+
+/* Transmit Process State */
+#define NPCM_DMA_STATUS_TX_PROCESS_STATE_SHIFT 20
+/* Transmit States */
+#define NPCM_DMA_STATUS_TX_STOPPED_STATE \
+ (0b000 << NPCM_DMA_STATUS_TX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_TX_RUNNING_FETCHING_STATE \
+ (0b001 << NPCM_DMA_STATUS_TX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_TX_RUNNING_WAITING_STATE \
+ (0b010 << NPCM_DMA_STATUS_TX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_TX_RUNNING_READ_STATE \
+ (0b011 << NPCM_DMA_STATUS_TX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_TX_SUSPENDED_STATE \
+ (0b110 << NPCM_DMA_STATUS_TX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_TX_RUNNING_CLOSING_STATE \
+ (0b111 << NPCM_DMA_STATUS_TX_PROCESS_STATE_SHIFT)
+/* Transmit Process State */
+#define NPCM_DMA_STATUS_RX_PROCESS_STATE_SHIFT 17
+/* Receive States */
+#define NPCM_DMA_STATUS_RX_STOPPED_STATE \
+ (0b000 << NPCM_DMA_STATUS_RX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_RX_RUNNING_FETCHING_STATE \
+ (0b001 << NPCM_DMA_STATUS_RX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_RX_RUNNING_WAITING_STATE \
+ (0b011 << NPCM_DMA_STATUS_RX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_RX_SUSPENDED_STATE \
+ (0b100 << NPCM_DMA_STATUS_RX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_RX_RUNNING_CLOSING_STATE \
+ (0b101 << NPCM_DMA_STATUS_RX_PROCESS_STATE_SHIFT)
+#define NPCM_DMA_STATUS_RX_RUNNING_TRANSFERRING_STATE \
+ (0b111 << NPCM_DMA_STATUS_RX_PROCESS_STATE_SHIFT)
+
+
+/* Early Receive Interrupt */
+#define NPCM_DMA_STATUS_ERI BIT(14)
+/* Fatal Bus Error Interrupt */
+#define NPCM_DMA_STATUS_FBI BIT(13)
+/* Early transmit Interrupt */
+#define NPCM_DMA_STATUS_ETI BIT(10)
+/* Receive Watchdog Timout */
+#define NPCM_DMA_STATUS_RWT BIT(9)
+/* Receive Process Stopped */
+#define NPCM_DMA_STATUS_RPS BIT(8)
+/* Receive Buffer Unavailable */
+#define NPCM_DMA_STATUS_RU BIT(7)
+/* Receive Interrupt */
+#define NPCM_DMA_STATUS_RI BIT(6)
+/* Transmit Underflow */
+#define NPCM_DMA_STATUS_UNF BIT(5)
+/* Receive Overflow */
+#define NPCM_DMA_STATUS_OVF BIT(4)
+/* Transmit Jabber Timeout */
+#define NPCM_DMA_STATUS_TJT BIT(3)
+/* Transmit Buffer Unavailable */
+#define NPCM_DMA_STATUS_TU BIT(2)
+/* Transmit Process Stopped */
+#define NPCM_DMA_STATUS_TPS BIT(1)
+/* Transmit Interrupt */
+#define NPCM_DMA_STATUS_TI BIT(0)
+
+/* Normal Interrupt Summary */
+#define NPCM_DMA_STATUS_NIS BIT(16)
+/* Interrupts enabled by NIE */
+#define NPCM_DMA_STATUS_NIS_BITS (NPCM_DMA_STATUS_TI | \
+ NPCM_DMA_STATUS_TU | \
+ NPCM_DMA_STATUS_RI | \
+ NPCM_DMA_STATUS_ERI)
+/* Abnormal Interrupt Summary */
+#define NPCM_DMA_STATUS_AIS BIT(15)
+/* Interrupts enabled by AIE */
+#define NPCM_DMA_STATUS_AIS_BITS (NPCM_DMA_STATUS_TPS | \
+ NPCM_DMA_STATUS_TJT | \
+ NPCM_DMA_STATUS_OVF | \
+ NPCM_DMA_STATUS_UNF | \
+ NPCM_DMA_STATUS_RU | \
+ NPCM_DMA_STATUS_RPS | \
+ NPCM_DMA_STATUS_RWT | \
+ NPCM_DMA_STATUS_ETI | \
+ NPCM_DMA_STATUS_FBI)
+
+/* Early Receive Interrupt Enable */
+#define NPCM_DMA_INTR_ENAB_ERE BIT(14)
+/* Fatal Bus Error Interrupt Enable */
+#define NPCM_DMA_INTR_ENAB_FBE BIT(13)
+/* Early transmit Interrupt Enable */
+#define NPCM_DMA_INTR_ENAB_ETE BIT(10)
+/* Receive Watchdog Timout Enable */
+#define NPCM_DMA_INTR_ENAB_RWE BIT(9)
+/* Receive Process Stopped Enable */
+#define NPCM_DMA_INTR_ENAB_RSE BIT(8)
+/* Receive Buffer Unavailable Enable */ #define NPCM_DMA_INTR_ENAB_RUE
+BIT(7)
+/* Receive Interrupt Enable */
+#define NPCM_DMA_INTR_ENAB_RIE BIT(6)
+/* Transmit Underflow Enable */
+#define NPCM_DMA_INTR_ENAB_UNE BIT(5)
+/* Receive Overflow Enable */
+#define NPCM_DMA_INTR_ENAB_OVE BIT(4)
+/* Transmit Jabber Timeout Enable */
+#define NPCM_DMA_INTR_ENAB_TJE BIT(3)
+/* Transmit Buffer Unavailable Enable */ #define NPCM_DMA_INTR_ENAB_TUE
+BIT(2)
+/* Transmit Process Stopped Enable */
+#define NPCM_DMA_INTR_ENAB_TSE BIT(1)
+/* Transmit Interrupt Enable */
+#define NPCM_DMA_INTR_ENAB_TIE BIT(0)
+
+/* Normal Interrupt Summary Enable */
+#define NPCM_DMA_INTR_ENAB_NIE BIT(16)
+/* Interrupts enabled by NIE Enable */
+#define NPCM_DMA_INTR_ENAB_NIE_BITS (NPCM_DMA_INTR_ENAB_TIE | \
+ NPCM_DMA_INTR_ENAB_TUE | \
+ NPCM_DMA_INTR_ENAB_RIE | \
+ NPCM_DMA_INTR_ENAB_ERE)
+/* Abnormal Interrupt Summary Enable */ #define NPCM_DMA_INTR_ENAB_AIE
+BIT(15)
+/* Interrupts enabled by AIE Enable */
+#define NPCM_DMA_INTR_ENAB_AIE_BITS (NPCM_DMA_INTR_ENAB_TSE | \
+ NPCM_DMA_INTR_ENAB_TJE | \
+ NPCM_DMA_INTR_ENAB_OVE | \
+ NPCM_DMA_INTR_ENAB_UNE | \
+ NPCM_DMA_INTR_ENAB_RUE | \
+ NPCM_DMA_INTR_ENAB_RSE | \
+ NPCM_DMA_INTR_ENAB_RWE | \
+ NPCM_DMA_INTR_ENAB_ETE | \
+ NPCM_DMA_INTR_ENAB_FBE)
+
+/* Flushing Disabled */
+#define NPCM_DMA_CONTROL_FLUSH_MASK BIT(24)
+/* Start/stop Transmit */
+#define NPCM_DMA_CONTROL_START_STOP_TX BIT(13)
+/* Next receive descriptor start address */ #define
+NPCM_DMA_HOST_RX_DESC_MASK(word) ((uint32_t) (word) & ~3u)
+/* Next transmit descriptor start address */ #define
+NPCM_DMA_HOST_TX_DESC_MASK(word) ((uint32_t) (word) & ~3u)
+
+/* Receive enable */
+#define NPCM_GMAC_MAC_CONFIG_RX_EN BIT(2)
+/* Transmit enable */
+#define NPCM_GMAC_MAC_CONFIG_TX_EN BIT(3)
+
+/* Frame Receive All */
+#define NPCM_GMAC_FRAME_FILTER_REC_ALL_MASK BIT(31)
+/* Frame HPF Filter*/
+#define NPCM_GMAC_FRAME_FILTER_HPF_MASK BIT(10)
+/* Frame SAF Filter*/
+#define NPCM_GMAC_FRAME_FILTER_SAF_MASK BIT(9)
+/* Frame SAIF Filter*/
+#define NPCM_GMAC_FRAME_FILTER_SAIF_MASK BIT(8)
+/* Frame PCF Filter*/
+#define NPCM_GMAC_FRAME_FILTER_PCF_MASK BIT(word) extract32((word), 6,
+2)
+/* Frame DBF Filter*/
+#define NPCM_GMAC_FRAME_FILTER_DBF_MASK BIT(5)
+/* Frame PM Filter*/
+#define NPCM_GMAC_FRAME_FILTER_PM_MASK BIT(4)
+/* Frame DAIF Filter*/
+#define NPCM_GMAC_FRAME_FILTER_DAIF_MASK BIT(3)
+/* Frame HMC Filter*/
+#define NPCM_GMAC_FRAME_FILTER_HMC_MASK BIT(2)
+/* Frame HUC Filter*/
+#define NPCM_GMAC_FRAME_FILTER_HUC_MASK BIT(1)
+/* Frame PR Filter*/
+#define NPCM_GMAC_FRAME_FILTER_PR_MASK BIT(0)
+
#endif /* NPCM_GMAC_H */
--
2.42.0.820.g83a721a137-goog
Reviewed-by: Tyrone Ting <kft...@nuvoton.com>
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