[PATCH v2 05/19] hw/net/bcm2838_genet: add GENET register structs, part 1/4

From: Sergey Kambalin <[email protected]>

Add the SYS, GR_BRIDGE, EXT, INTRL0, and INTRL1 register block
layouts and the top-level BCM2838GenetRegs/BCM2838GenetState
structs, plus REG32/FIELD accessors for the revision-control and
interrupt-status registers.

Part of Sergey Kambalin's original Raspberry Pi 4B PCIe/GENET
networking series (patchwork series 829638, posted to qemu-devel in
2024, never merged). Carried forward and completed by Marcelo Manzo.

Signed-off-by: Sergey Kambalin <[email protected]>
Signed-off-by: Marcelo Manzo <[email protected]>
---
 hw/net/bcm2838_genet.c         | 37 ++++++++++++++++
 include/hw/net/bcm2838_genet.h | 77 +++++++++++++++++++++++++++++++++-
 2 files changed, 113 insertions(+), 1 deletion(-)

diff --git a/hw/net/bcm2838_genet.c b/hw/net/bcm2838_genet.c
index 2ff93a3417..ff6602c1f3 100644
--- a/hw/net/bcm2838_genet.c
+++ b/hw/net/bcm2838_genet.c
@@ -15,10 +15,47 @@
 #include "hw/core/irq.h"
 #include "net/checksum.h"
 #include "system/dma.h"
+#include "hw/core/registerfields.h"
 #include "hw/core/resettable.h"
 #include "hw/net/bcm2838_genet.h"
 #include "trace.h"
 
+REG32(GENET_SYS_REV_CTRL,              0)
+FIELD(GENET_SYS_REV_CTRL, GPHY_REV,    0, 16)
+FIELD(GENET_SYS_REV_CTRL, MINOR_REV,   16, 4)
+FIELD(GENET_SYS_REV_CTRL, RSVD_20_23,  20, 4)
+FIELD(GENET_SYS_REV_CTRL, MAJOR_REV,   24, 4)
+FIELD(GENET_SYS_REV_CTRL, RSVD_28_31,  28, 4)
+
+REG32(GENET_INTRL_0,                0)
+FIELD(GENET_INTRL_0, SCB,           0, 1)
+FIELD(GENET_INTRL_0, EPHY,          1, 1)
+FIELD(GENET_INTRL_0, PHY_DET_R,     2, 1)
+FIELD(GENET_INTRL_0, PHY_DET_F,     3, 1)
+FIELD(GENET_INTRL_0, LINK_UP,       4, 1)
+FIELD(GENET_INTRL_0, LINK_DOWN,     5, 1)
+FIELD(GENET_INTRL_0, UMAC,          6, 1)
+FIELD(GENET_INTRL_0, UMAC_TSV,      7, 1)
+FIELD(GENET_INTRL_0, TBUF_UNDERRUN, 8, 1)
+FIELD(GENET_INTRL_0, RBUF_OVERFLOW, 9, 1)
+FIELD(GENET_INTRL_0, HFB_SM,        10, 1)
+FIELD(GENET_INTRL_0, HFB_MM,        11, 1)
+FIELD(GENET_INTRL_0, MPD_R,         12, 1)
+FIELD(GENET_INTRL_0, RXDMA_MBDONE,  13, 1)
+FIELD(GENET_INTRL_0, RXDMA_PDONE,   14, 1)
+FIELD(GENET_INTRL_0, RXDMA_BDONE,   15, 1)
+FIELD(GENET_INTRL_0, TXDMA_MBDONE,  16, 1)
+FIELD(GENET_INTRL_0, TXDMA_PDONE,   17, 1)
+FIELD(GENET_INTRL_0, TXDMA_BDONE,   18, 1)
+FIELD(GENET_INTRL_0, RSVD_19_22,    19, 4)
+FIELD(GENET_INTRL_0, MDIO_DONE,     23, 1)
+FIELD(GENET_INTRL_0, MDIO_ERROR,    24, 1)
+FIELD(GENET_INTRL_0, RSVD_25_31,    25, 4)
+
+REG32(GENET_INTRL_1,              0)
+FIELD(GENET_INTRL_1, TX_INTRS,    0, 16)
+FIELD(GENET_INTRL_1, RX_INTRS,    16, 16)
+
 
 static uint64_t bcm2838_genet_read(void *opaque, hwaddr offset, unsigned size)
 {
diff --git a/include/hw/net/bcm2838_genet.h b/include/hw/net/bcm2838_genet.h
index 91cf1773d5..af5e8abd2e 100644
--- a/include/hw/net/bcm2838_genet.h
+++ b/include/hw/net/bcm2838_genet.h
@@ -19,7 +19,82 @@ OBJECT_DECLARE_SIMPLE_TYPE(BCM2838GenetState, BCM2838_GENET)
 #define BCM2838_GENET_REV_MINOR         0
 
 typedef struct {
-    uint8_t stub_area[0x10000]; /* temporary stub */
+    uint32_t rev_ctrl;
+    uint32_t port_ctrl;
+    uint32_t rbuf_flush_ctrl;
+    uint32_t tbuf_flush_ctrl;
+    uint32_t reserved_0x10[12];
+} BCM2838GenetRegsSys;
+
+typedef struct {
+    uint32_t reserved_0x0[16];
+} BCM2838GenetRegsGrBridge;
+
+typedef struct {
+    uint32_t pwr_mgmt;
+    uint32_t reserved_0x4[2];
+    uint32_t rgmii_oob_ctrl;
+    uint32_t reserved_0x10[3];
+    uint32_t gphy_ctrl;
+    uint32_t reserved_0x20[24];
+} BCM2838GenetRegsExt;
+
+typedef struct {
+    uint32_t stat;
+    uint32_t set;
+    uint32_t clear;
+    uint32_t mask_status;
+    uint32_t mask_set;
+    uint32_t mask_clear;
+    uint32_t reserved_0x18[10];
+} BCM2838GenetRegsIntrl0;
+
+typedef struct {
+    uint32_t stat;
+    uint32_t set;
+    uint32_t clear;
+    uint32_t mask_status;
+    uint32_t mask_set;
+    uint32_t mask_clear;
+    uint32_t reserved_0x18[10];
+} BCM2838GenetRegsIntrl1;
+
+typedef struct {
+    uint32_t ctrl;
+    uint32_t reserved_0x4[2];
+    uint32_t status;
+    uint32_t reserved_0x10;
+    uint32_t chk_ctrl;
+    uint32_t reserved_0x18[31];
+    uint32_t ovfl_cnt;
+    uint32_t err_cnt;
+    uint32_t energy_ctrl;
+    uint32_t reserved_0xA0[5];
+    uint32_t size_ctrl;
+    uint32_t reserved_0xB8[18];
+} BCM2838GenetRegsRbuf;
+
+typedef struct {
+    uint32_t ctrl;
+    uint32_t reserved_0x4[2];
+    uint32_t bp_mc;
+    uint32_t reserved_0x10;
+    uint32_t energy_ctrl;
+    uint32_t reserved_0x18[58];
+} BCM2838GenetRegsTbuf;
+
+typedef struct {
+    BCM2838GenetRegsSys sys;
+    BCM2838GenetRegsGrBridge gr_bridge;
+    BCM2838GenetRegsExt ext;
+    uint32_t reserved_0x100[64];
+    BCM2838GenetRegsIntrl0 intrl0;
+    BCM2838GenetRegsIntrl1 intrl1;
+    uint32_t reserved_0x280[32];
+    BCM2838GenetRegsRbuf rbuf;
+    uint32_t reserved_0x400[128];
+    BCM2838GenetRegsTbuf tbuf;
+    uint32_t reserved_0x700[64];
 } BCM2838GenetRegs;
 
 struct BCM2838GenetState {
-- 
2.47.1