e1000: Trivial implementation of various MAC registers

These registers appear in Intel's specs, but were not implemented.
These registers are now implemented trivially, i.e. they are initiated
with zero values, and if they are RW, they can be written or read by the
driver, or read only if they are R (essentially retaining their zero
values). For these registers no other procedures are performed.

For the trivially implemented Diagnostic registers, a debug warning is
produced on read/write attempts.

PLEASE NOTE: these registers will not be active, nor will migrate, until
a compatibility flag will be set (in a later patch in this series).

The registers implemented here are:

Transmit:
RW: AIT

Management:
RW: WUC     WUS     IPAV    IP6AT*  IP4AT*  FFLT*   WUPM*   FFMT*   FFVT*

Diagnostic:
RW: RDFH    RDFT    RDFHS   RDFTS   RDFPC   PBM*    TDFH    TDFT    TDFHS
    TDFTS   TDFPC

Statistic:
RW: FCRUC
R:  RNBC    TSCTFC  MGTPRC  MGTPDC  MGTPTC  RFC     RJC     SCC     ECOL
    LATECOL MCC     COLC    DC      TNCRS   SEC     CEXTERR RLEC    XONRXC
    XONTXC  XOFFRXC XOFFTXC

Signed-off-by: Leonid Bloch <leonid.bloch@ravellosystems.com>
Signed-off-by: Dmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

2 files changed, 100 insertions, 3 deletions

diff --git a/hw/net/e1000.c b/hw/net/e1000.c
index e079f25..767490c 100644
--- a/hw/net/e1000.c
+++ b/hw/net/e1000.c
@@ -172,7 +172,17 @@ enum {
     defreg(TPR),     defreg(TPT),     defreg(TXDCTL),  defreg(WUFC),
     defreg(RA),      defreg(MTA),     defreg(CRCERRS), defreg(VFTA),
     defreg(VET),     defreg(RDTR),    defreg(RADV),    defreg(TADV),
-    defreg(ITR),
+    defreg(ITR),     defreg(FCRUC),   defreg(TDFH),    defreg(TDFT),
+    defreg(TDFHS),   defreg(TDFTS),   defreg(TDFPC),   defreg(RDFH),
+    defreg(RDFT),    defreg(RDFHS),   defreg(RDFTS),   defreg(RDFPC),
+    defreg(IPAV),    defreg(WUC),     defreg(WUS),     defreg(AIT),
+    defreg(IP6AT),   defreg(IP4AT),   defreg(FFLT),    defreg(FFMT),
+    defreg(FFVT),    defreg(WUPM),    defreg(PBM),     defreg(SCC),
+    defreg(ECOL),    defreg(MCC),     defreg(LATECOL), defreg(COLC),
+    defreg(DC),      defreg(TNCRS),   defreg(SEC),     defreg(CEXTERR),
+    defreg(RLEC),    defreg(XONRXC),  defreg(XONTXC),  defreg(XOFFRXC),
+    defreg(XOFFTXC), defreg(RFC),     defreg(RJC),     defreg(RNBC),
+    defreg(TSCTFC),  defreg(MGTPRC),  defreg(MGTPDC),  defreg(MGTPTC)
 };
 
 static void
@@ -1122,6 +1132,30 @@ mac_readreg(E1000State *s, int index)
 }
 
 static uint32_t
+mac_low4_read(E1000State *s, int index)
+{
+    return s->mac_reg[index] & 0xf;
+}
+
+static uint32_t
+mac_low11_read(E1000State *s, int index)
+{
+    return s->mac_reg[index] & 0x7ff;
+}
+
+static uint32_t
+mac_low13_read(E1000State *s, int index)
+{
+    return s->mac_reg[index] & 0x1fff;
+}
+
+static uint32_t
+mac_low16_read(E1000State *s, int index)
+{
+    return s->mac_reg[index] & 0xffff;
+}
+
+static uint32_t
 mac_icr_read(E1000State *s, int index)
 {
     uint32_t ret = s->mac_reg[ICR];
@@ -1223,18 +1257,37 @@ static uint32_t (*macreg_readops[])(E1000State *, int) = {
     getreg(RDH),      getreg(RDT),      getreg(VET),      getreg(ICS),
     getreg(TDBAL),    getreg(TDBAH),    getreg(RDBAH),    getreg(RDBAL),
     getreg(TDLEN),    getreg(RDLEN),    getreg(RDTR),     getreg(RADV),
-    getreg(TADV),     getreg(ITR),
+    getreg(TADV),     getreg(ITR),      getreg(FCRUC),    getreg(IPAV),
+    getreg(WUC),      getreg(WUS),      getreg(SCC),      getreg(ECOL),
+    getreg(MCC),      getreg(LATECOL),  getreg(COLC),     getreg(DC),
+    getreg(TNCRS),    getreg(SEC),      getreg(CEXTERR),  getreg(RLEC),
+    getreg(XONRXC),   getreg(XONTXC),   getreg(XOFFRXC),  getreg(XOFFTXC),
+    getreg(RFC),      getreg(RJC),      getreg(RNBC),     getreg(TSCTFC),
+    getreg(MGTPRC),   getreg(MGTPDC),   getreg(MGTPTC),
 
     [TOTH]    = mac_read_clr8,      [TORH]    = mac_read_clr8,
     [GPRC]    = mac_read_clr4,      [GPTC]    = mac_read_clr4,
     [TPT]     = mac_read_clr4,      [TPR]     = mac_read_clr4,
     [ICR]     = mac_icr_read,       [EECD]    = get_eecd,
     [EERD]    = flash_eerd_read,
+    [RDFH]    = mac_low13_read,     [RDFT]    = mac_low13_read,
+    [RDFHS]   = mac_low13_read,     [RDFTS]   = mac_low13_read,
+    [RDFPC]   = mac_low13_read,
+    [TDFH]    = mac_low11_read,     [TDFT]    = mac_low11_read,
+    [TDFHS]   = mac_low13_read,     [TDFTS]   = mac_low13_read,
+    [TDFPC]   = mac_low13_read,
+    [AIT]     = mac_low16_read,
 
     [CRCERRS ... MPC]   = &mac_readreg,
+    [IP6AT ... IP6AT+3] = &mac_readreg,    [IP4AT ... IP4AT+6] = &mac_readreg,
+    [FFLT ... FFLT+6]   = &mac_low11_read,
     [RA ... RA+31]      = &mac_readreg,
+    [WUPM ... WUPM+31]  = &mac_readreg,
     [MTA ... MTA+127]   = &mac_readreg,
     [VFTA ... VFTA+127] = &mac_readreg,
+    [FFMT ... FFMT+254] = &mac_low4_read,
+    [FFVT ... FFVT+254] = &mac_readreg,
+    [PBM ... PBM+16383] = &mac_readreg,
 };
 enum { NREADOPS = ARRAY_SIZE(macreg_readops) };
 
@@ -1242,7 +1295,11 @@ enum { NREADOPS = ARRAY_SIZE(macreg_readops) };
 static void (*macreg_writeops[])(E1000State *, int, uint32_t) = {
     putreg(PBA),      putreg(EERD),     putreg(SWSM),     putreg(WUFC),
     putreg(TDBAL),    putreg(TDBAH),    putreg(TXDCTL),   putreg(RDBAH),
-    putreg(RDBAL),    putreg(LEDCTL),   putreg(VET),
+    putreg(RDBAL),    putreg(LEDCTL),   putreg(VET),      putreg(FCRUC),
+    putreg(TDFH),     putreg(TDFT),     putreg(TDFHS),    putreg(TDFTS),
+    putreg(TDFPC),    putreg(RDFH),     putreg(RDFT),     putreg(RDFHS),
+    putreg(RDFTS),    putreg(RDFPC),    putreg(IPAV),     putreg(WUC),
+    putreg(WUS),      putreg(AIT),
 
     [TDLEN]  = set_dlen,   [RDLEN]  = set_dlen,       [TCTL] = set_tctl,
     [TDT]    = set_tctl,   [MDIC]   = set_mdic,       [ICS]  = set_ics,
@@ -1252,9 +1309,14 @@ static void (*macreg_writeops[])(E1000State *, int, uint32_t) = {
     [RDTR]   = set_16bit,  [RADV]   = set_16bit,      [TADV] = set_16bit,
     [ITR]    = set_16bit,
 
+    [IP6AT ... IP6AT+3] = &mac_writereg, [IP4AT ... IP4AT+6] = &mac_writereg,
+    [FFLT ... FFLT+6]   = &mac_writereg,
     [RA ... RA+31]      = &mac_writereg,
+    [WUPM ... WUPM+31]  = &mac_writereg,
     [MTA ... MTA+127]   = &mac_writereg,
     [VFTA ... VFTA+127] = &mac_writereg,
+    [FFMT ... FFMT+254] = &mac_writereg, [FFVT ... FFVT+254] = &mac_writereg,
+    [PBM ... PBM+16383] = &mac_writereg,
 };
 
 enum { NWRITEOPS = ARRAY_SIZE(macreg_writeops) };
@@ -1269,6 +1331,35 @@ enum { MAC_ACCESS_PARTIAL = 1, MAC_ACCESS_FLAG_NEEDED = 2 };
 static const uint8_t mac_reg_access[0x8000] = {
     [RDTR]    = markflag(MIT),    [TADV]    = markflag(MIT),
     [RADV]    = markflag(MIT),    [ITR]     = markflag(MIT),
+
+    [IPAV]    = markflag(MAC),    [WUC]     = markflag(MAC),
+    [IP6AT]   = markflag(MAC),    [IP4AT]   = markflag(MAC),
+    [FFVT]    = markflag(MAC),    [WUPM]    = markflag(MAC),
+    [ECOL]    = markflag(MAC),    [MCC]     = markflag(MAC),
+    [DC]      = markflag(MAC),    [TNCRS]   = markflag(MAC),
+    [RLEC]    = markflag(MAC),    [XONRXC]  = markflag(MAC),
+    [XOFFTXC] = markflag(MAC),    [RFC]     = markflag(MAC),
+    [TSCTFC]  = markflag(MAC),    [MGTPRC]  = markflag(MAC),
+    [WUS]     = markflag(MAC),    [AIT]     = markflag(MAC),
+    [FFLT]    = markflag(MAC),    [FFMT]    = markflag(MAC),
+    [SCC]     = markflag(MAC),    [FCRUC]   = markflag(MAC),
+    [LATECOL] = markflag(MAC),    [COLC]    = markflag(MAC),
+    [SEC]     = markflag(MAC),    [CEXTERR] = markflag(MAC),
+    [XONTXC]  = markflag(MAC),    [XOFFRXC] = markflag(MAC),
+    [RJC]     = markflag(MAC),    [RNBC]    = markflag(MAC),
+    [MGTPDC]  = markflag(MAC),    [MGTPTC]  = markflag(MAC),
+
+    [TDFH]  = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [TDFT]  = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [TDFHS] = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [TDFTS] = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [TDFPC] = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [RDFH]  = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [RDFT]  = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [RDFHS] = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [RDFTS] = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [RDFPC] = markflag(MAC) | MAC_ACCESS_PARTIAL,
+    [PBM]   = markflag(MAC) | MAC_ACCESS_PARTIAL,
 };
 
 static void
diff --git a/hw/net/e1000_regs.h b/hw/net/e1000_regs.h
index afd81cc..1c40244 100644
--- a/hw/net/e1000_regs.h
+++ b/hw/net/e1000_regs.h
@@ -158,6 +158,7 @@
 #define E1000_PHY_CTRL     0x00F10  /* PHY Control Register in CSR */
 #define FEXTNVM_SW_CONFIG  0x0001
 #define E1000_PBA      0x01000  /* Packet Buffer Allocation - RW */
+#define E1000_PBM      0x10000  /* Packet Buffer Memory - RW */
 #define E1000_PBS      0x01008  /* Packet Buffer Size - RW */
 #define E1000_EEMNGCTL 0x01010  /* MNG EEprom Control */
 #define E1000_FLASH_UPDATES 1000
@@ -191,6 +192,11 @@
 #define E1000_RAID     0x02C08  /* Receive Ack Interrupt Delay - RW */
 #define E1000_TXDMAC   0x03000  /* TX DMA Control - RW */
 #define E1000_KABGTXD  0x03004  /* AFE Band Gap Transmit Ref Data */
+#define E1000_RDFH     0x02410  /* Receive Data FIFO Head Register - RW */
+#define E1000_RDFT     0x02418  /* Receive Data FIFO Tail Register - RW */
+#define E1000_RDFHS    0x02420  /* Receive Data FIFO Head Saved Register - RW */
+#define E1000_RDFTS    0x02428  /* Receive Data FIFO Tail Saved Register - RW */
+#define E1000_RDFPC    0x02430  /* Receive Data FIFO Packet Count - RW */
 #define E1000_TDFH     0x03410  /* TX Data FIFO Head - RW */
 #define E1000_TDFT     0x03418  /* TX Data FIFO Tail - RW */
 #define E1000_TDFHS    0x03420  /* TX Data FIFO Head Saved - RW */