* [9front] [PATCH] bcm: medium to low quality 5717 series support.
@ 2022-09-04 19:54 james palmer
0 siblings, 0 replies; only message in thread
From: james palmer @ 2022-09-04 19:54 UTC (permalink / raw)
To: 9front
introduces support for the first port on 5717 series cards.
turns out broadcom stuck a maximum rx frame size
field into the rx return ring control block, with a default of 0.
an attempt was made at getting the other ports to talk to the right phy,
but it is not yet successful.
---
diff a87619ffb1719c4ed2d1eae6a8c60d06bddd6272 0b25e6516af7de8de981668efacbbb0bee885455
--- a/sys/src/9/pc/etherbcm.c Sun Sep 4 16:02:48 2022
+++ b/sys/src/9/pc/etherbcm.c Sun Sep 4 20:54:41 2022
@@ -143,6 +143,8 @@
ReadDMAMode = 0x4800,
ReadDMAStatus = 0x4804,
+ ReadDMALsoCrptenCtrl = 0x4910, /* no clue, for rdma workaround on 57[19, 20] */
+ ReadDMALength = 0x4be0,
WriteDMAMode = 0x4C00,
WriteDMAStatus = 0x4C04,
@@ -218,13 +220,14 @@
BCM5705_2 = 0x1654,
BCM5717 = 0x1655,
BCM5718 = 0x1656,
- BCM5720 = 0x1658,
+ BCM5719 = 0x1657,
BCM5721 = 0x1659,
BCM5722 = 0x165a,
BCM5723 = 0x165b,
BCM5724 = 0x165c,
BCM5705M = 0x165d,
- BCM5705M_2 = 0x165e,
+ BCM5705M_2 = 0x165e,
+ BCM5720 = 0x165f,
BCM5714 = 0x1668,
BCM5780 = 0x166a,
BCM5780S = 0x166b,
@@ -289,11 +292,28 @@
return x;
}
+static uint
+phyno(Ctlr *ctlr)
+{
+ uint pa;
+
+ pa = 1;
+ switch(ctlr->pdev->did) {
+ case BCM5717:
+ case BCM5718:
+ case BCM5719:
+ case BCM5720:
+ pa = BUSFNO(ctlr->pdev->tbdf);
+ }
+
+ return pa;
+}
+
static int
miir(Ctlr *ctlr, int ra)
{
while(csr32(ctlr, MIComm) & (1<<29));
- csr32(ctlr, MIComm) = (ra << 16) | (1 << 21) | (1 << 27) | (1 << 29);
+ csr32(ctlr, MIComm) = (ra << 16) | (phyno(ctlr) << 21) | (1 << 27) | (1 << 29);
while(csr32(ctlr, MIComm) & (1<<29));
if(csr32(ctlr, MIComm) & (1<<28)) return -1;
return csr32(ctlr, MIComm) & 0xFFFF;
@@ -303,7 +323,7 @@
miiw(Ctlr *ctlr, int ra, int value)
{
while(csr32(ctlr, MIComm) & (1<<29));
- csr32(ctlr, MIComm) = (value & 0xFFFF) | (ra << 16) | (1 << 21) | (1 << 27) | (1 << 29);
+ csr32(ctlr, MIComm) = (value & 0xFFFF) | (ra << 16) | (phyno(ctlr) << 21) | (1 << 26) | (1 << 29);
while(csr32(ctlr, MIComm) & (1<<29));
return 0;
}
@@ -547,6 +567,9 @@
csr32(ctlr, MiscHostCtl) |= IndirectAccessEnable | EnablePCIStateRegister | EnableClockControlRegister;
csr32(ctlr, MiscHostCtl) = (csr32(ctlr, MiscHostCtl) & ~(ByteSwap|WordSwap)) | WordSwap;
csr32(ctlr, ModeControl) |= ByteWordSwap;
+ if(ctlr->pdev->did == BCM5720)
+ csr32(ctlr, ModeControl) |= (1<<6) | (1<<7) | (1<<15)| (1<<18);
+
csr32(ctlr, MemoryWindow) = 0;
mem32(ctlr, 0xB50) = 0x4B657654; /* magic number bullshit */
csr32(ctlr, MiscConfiguration) |= GPHYPowerDownOverride | DisableGRCResetOnPCIE;
@@ -599,8 +622,23 @@
pa = PCIWADDR(ctlr->recvprod);
csr32(ctlr, ReceiveBDHostAddr + 0) = pa >> 32;
csr32(ctlr, ReceiveBDHostAddr + 4) = pa;
- csr32(ctlr, ReceiveBDFlags) = RecvProdRingLen << 16;
- csr32(ctlr, ReceiveBDNIC) = 0x6000;
+ switch(ctlr->pdev->did) {
+ case BCM5717:
+ case BCM5718:
+ case BCM5719:
+ case BCM5720:
+ /* 5717 series cards have a different nic addr,
+ * and have a max frame length in bits 2 to 15 */
+ csr32(ctlr, ReceiveBDFlags) = RecvProdRingLen << 16 | 1536 << 2;
+ csr32(ctlr, ReceiveBDNIC) = 0x40000;
+ break;
+
+ default:
+ csr32(ctlr, ReceiveBDFlags) = RecvProdRingLen << 16;
+ csr32(ctlr, ReceiveBDNIC) = 0x6000;
+ break;
+ }
+
csr32(ctlr, ReceiveBDRepl) = 25;
csr32(ctlr, SendBDRingHostIndex) = 0;
csr32(ctlr, SendBDRingHostIndex+4) = 0;
@@ -619,10 +657,10 @@
csr32(ctlr, RecvProdBDRingIndex+4) = 0;
/* this delay is not in the datasheet, but necessary; Broadcom is fucking with us */
microdelay(1000);
- i = csr32(ctlr, 0x410);
+ i = csr32(ctlr, MACAddress + BUSFNO(ctlr->pdev->tbdf) * 8);
j = edev->ea[0] = i >> 8;
j += edev->ea[1] = i;
- i = csr32(ctlr, MACAddress + 4);
+ i = csr32(ctlr, MACAddress + BUSFNO(ctlr->pdev->tbdf) * 8 + 4);
j += edev->ea[2] = i >> 24;
j += edev->ea[3] = i >> 16;
j += edev->ea[4] = i >> 8;
@@ -659,6 +697,28 @@
csr32(ctlr, InterruptMailbox) = 0;
csr32(ctlr, WriteDMAMode) |= 0x200003fe; /* pulled out of my nose */
csr32(ctlr, ReadDMAMode) |= 0x3fe;
+
+ /* workaround for broken rdma on the 5719 and 5720 */
+ microdelay(40);
+ switch(ctlr->pdev->did) {
+ case BCM5719:
+ case BCM5720:
+ for(i = 0; i < 2; i++) {
+ j = csr32(ctlr, ReadDMALength + i * 4);
+ if((j & 0xffff) > ETHERMAXTU + 2) /* max ether mtu with crc */
+ break;
+ if(((j >> 16) & 0xffff) > ETHERMAXTU + 2)
+ break;
+ }
+
+ if(i != 2) {
+ if(ctlr->pdev->did == BCM5719)
+ csr32(ctlr, ReadDMALsoCrptenCtrl) |= 0x2000000;
+ else
+ csr32(ctlr, ReadDMALsoCrptenCtrl) |= 0x200000;
+ }
+ }
+
csr32(ctlr, ReceiveDataCompletionMode) |= Enable | Attn;
csr32(ctlr, SendDataCompletionMode) |= Enable;
csr32(ctlr, SendBDCompletionMode) |= Enable | Attn;
@@ -675,7 +735,7 @@
csr32(ctlr, MIStatus) |= 1<<0;
csr32(ctlr, MACEventEnable) = 0;
csr32(ctlr, MACEventStatus) |= (1<<12);
- csr32(ctlr, MIMode) = 0xC0000;
+ csr32(ctlr, MIMode) = 0xC0000 | (phyno(ctlr) << 5);
microdelay(40);
miiw(ctlr, PhyControl, 1<<15);
for(i = 0; i < 1000 && miir(ctlr, PhyControl) & (1<<15); i++)
@@ -694,7 +754,7 @@
csr32(ctlr, MACHash+4) = -1;
csr32(ctlr, MACHash+8) = -1;
csr32(ctlr, MACHash+12) = -1;
- for(i = 0; i < 8; i++) csr32(ctlr, ReceiveRules + 8 * i) = 0;
+ for(i = 0; i < 16; i++) csr32(ctlr, ReceiveRules + 8 * i) = 0;
csr32(ctlr, ReceiveRulesConfiguration) = 1 << 3;
csr32(ctlr, MSIMode) |= Enable;
csr32(ctlr, MiscHostCtl) &= ~(MaskPCIInt | ClearIntA);
@@ -743,13 +803,14 @@
case BCM5705_2:
case BCM5717:
case BCM5718:
- case BCM5720:
+ case BCM5719:
case BCM5721:
case BCM5722:
case BCM5723:
case BCM5724:
case BCM5705M:
case BCM5705M_2:
+ case BCM5720:
case BCM5714:
case BCM5780:
case BCM5780S:
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2022-09-04 19:54 [9front] [PATCH] bcm: medium to low quality 5717 series support james palmer
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