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From 442969b0213becab817ad626597c1c7eeaf15ebc Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineeringinc.com>
Date: Sat, 8 Aug 2015 20:30:36 -0500
Subject: [PATCH 105/139] cpu/amd/family_10h-family_15h: Set up Family 15h Link
Base Channel Buffer Count registers
Change-Id: I8d616a64a5a9cf0b51288535f5050c6866d0996b
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
---
src/cpu/amd/family_10h-family_15h/init_cpus.c | 159 +++++++++++++++++++++++++-
1 file changed, 155 insertions(+), 4 deletions(-)
diff --git a/src/cpu/amd/family_10h-family_15h/init_cpus.c b/src/cpu/amd/family_10h-family_15h/init_cpus.c
index 10c676f..63ad346 100644
--- a/src/cpu/amd/family_10h-family_15h/init_cpus.c
+++ b/src/cpu/amd/family_10h-family_15h/init_cpus.c
@@ -1203,6 +1203,161 @@ static void cpuSetAMDPCI(u8 node)
dword |= (compute_unit_buffer_count << 4);
pci_write_config32(NODE_PCI(node, 3), 0x1a0, dword);
+ uint8_t link;
+ uint8_t ganged;
+ uint8_t iolink;
+ uint8_t probe_filter_enabled = !!dual_node;
+
+ /* Set up the Link Base Channel Buffer Count */
+ uint8_t isoc_rsp_data;
+ uint8_t isoc_np_req_data;
+ uint8_t isoc_rsp_cmd;
+ uint8_t isoc_preq;
+ uint8_t isoc_np_req_cmd;
+ uint8_t free_data;
+ uint8_t free_cmd;
+ uint8_t rsp_data;
+ uint8_t np_req_data;
+ uint8_t probe_cmd;
+ uint8_t rsp_cmd;
+ uint8_t preq;
+ uint8_t np_req_cmd;
+
+ for (link = 0; link < 4; link++) {
+ if (AMD_CpuFindCapability(node, link, &offset)) {
+ ganged = !!(pci_read_config32(NODE_PCI(node, 0), (link << 2) + 0x170) & 0x1);
+ iolink = (AMD_checkLinkType(node, link, offset) & HTPHY_LINKTYPE_NONCOHERENT);
+
+ if (!iolink && ganged) {
+ if (probe_filter_enabled) {
+ isoc_rsp_data = 0;
+ isoc_np_req_data = 0;
+ isoc_rsp_cmd = 0;
+ isoc_preq = 0;
+ isoc_np_req_cmd = 1;
+ free_data = 0;
+ free_cmd = 8;
+ rsp_data = 3;
+ np_req_data = 3;
+ probe_cmd = 4;
+ rsp_cmd = 9;
+ preq = 2;
+ np_req_cmd = 8;
+ } else {
+ isoc_rsp_data = 0;
+ isoc_np_req_data = 0;
+ isoc_rsp_cmd = 0;
+ isoc_preq = 0;
+ isoc_np_req_cmd = 1;
+ free_data = 0;
+ free_cmd = 8;
+ rsp_data = 3;
+ np_req_data = 3;
+ probe_cmd = 8;
+ rsp_cmd = 9;
+ preq = 2;
+ np_req_cmd = 4;
+ }
+ } else if (!iolink && !ganged) {
+ if (probe_filter_enabled) {
+ isoc_rsp_data = 0;
+ isoc_np_req_data = 0;
+ isoc_rsp_cmd = 0;
+ isoc_preq = 0;
+ isoc_np_req_cmd = 1;
+ free_data = 0;
+ free_cmd = 8;
+ rsp_data = 3;
+ np_req_data = 3;
+ probe_cmd = 4;
+ rsp_cmd = 9;
+ preq = 2;
+ np_req_cmd = 8;
+ } else {
+ isoc_rsp_data = 0;
+ isoc_np_req_data = 0;
+ isoc_rsp_cmd = 0;
+ isoc_preq = 0;
+ isoc_np_req_cmd = 1;
+ free_data = 0;
+ free_cmd = 4;
+ rsp_data = 3;
+ np_req_data = 3;
+ probe_cmd = 4;
+ rsp_cmd = 9;
+ preq = 2;
+ np_req_cmd = 4;
+ }
+ } else if (iolink && ganged) {
+ isoc_rsp_data = 0;
+ isoc_np_req_data = 0;
+ isoc_rsp_cmd = 0;
+ isoc_preq = 0;
+ isoc_np_req_cmd = 1;
+ free_data = 0;
+ free_cmd = 8;
+ rsp_data = 1;
+ np_req_data = 0;
+ probe_cmd = 0;
+ rsp_cmd = 2;
+ preq = 7;
+ np_req_cmd = 14;
+ } else {
+ /* FIXME
+ * This is an educated guess as the BKDG does not specify
+ * the appropriate buffer counts for this case!
+ */
+ isoc_rsp_data = 0;
+ isoc_np_req_data = 0;
+ isoc_rsp_cmd = 0;
+ isoc_preq = 0;
+ isoc_np_req_cmd = 1;
+ free_data = 1;
+ free_cmd = 8;
+ rsp_data = 1;
+ np_req_data = 1;
+ probe_cmd = 0;
+ rsp_cmd = 2;
+ preq = 4;
+ np_req_cmd = 12;
+ }
+
+ dword = pci_read_config32(NODE_PCI(node, 0), (link * 0x20) + 0x94);
+ dword &= ~(0x3 << 27); /* IsocRspData = isoc_rsp_data */
+ dword |= ((isoc_rsp_data & 0x3) << 27);
+ dword &= ~(0x3 << 25); /* IsocNpReqData = isoc_np_req_data */
+ dword |= ((isoc_np_req_data & 0x3) << 25);
+ dword &= ~(0x7 << 22); /* IsocRspCmd = isoc_rsp_cmd */
+ dword |= ((isoc_rsp_cmd & 0x7) << 22);
+ dword &= ~(0x7 << 19); /* IsocPReq = isoc_preq */
+ dword |= ((isoc_preq & 0x7) << 19);
+ dword &= ~(0x7 << 16); /* IsocNpReqCmd = isoc_np_req_cmd */
+ dword |= ((isoc_np_req_cmd & 0x7) << 16);
+ pci_write_config32(NODE_PCI(node, 0), (link * 0x20) + 0x94, dword);
+
+ dword = pci_read_config32(NODE_PCI(node, 0), (link * 0x20) + 0x90);
+ dword &= ~(0x1 << 31); /* LockBc = 0x1 */
+ dword |= ((0x1 & 0x1) << 31);
+ dword &= ~(0x7 << 25); /* FreeData = free_data */
+ dword |= ((free_data & 0x7) << 25);
+ dword &= ~(0x1f << 20); /* FreeCmd = free_cmd */
+ dword |= ((free_cmd & 0x1f) << 20);
+ dword &= ~(0x3 << 18); /* RspData = rsp_data */
+ dword |= ((rsp_data & 0x3) << 18);
+ dword &= ~(0x3 << 16); /* NpReqData = np_req_data */
+ dword |= ((np_req_data & 0x3) << 16);
+ dword &= ~(0xf << 12); /* ProbeCmd = probe_cmd */
+ dword |= ((probe_cmd & 0xf) << 12);
+ dword &= ~(0xf << 8); /* RspCmd = rsp_cmd */
+ dword |= ((rsp_cmd & 0xf) << 8);
+ dword &= ~(0x7 << 5); /* PReq = preq */
+ dword |= ((preq & 0x7) << 5);
+ dword &= ~(0x1f << 0); /* NpReqCmd = np_req_cmd */
+ dword |= ((np_req_cmd & 0x1f) << 0);
+ pci_write_config32(NODE_PCI(node, 0), (link * 0x20) + 0x90, dword);
+ }
+ }
+
/* Set up the Link to XCS Token Counts */
uint8_t isoc_rsp_tok_1;
uint8_t isoc_preq_tok_1;
@@ -1220,10 +1375,6 @@ static void cpuSetAMDPCI(u8 node)
uint8_t preq_tok_0;
uint8_t req_tok_0;
- uint8_t link;
- uint8_t ganged;
- uint8_t iolink;
- uint8_t probe_filter_enabled = !!dual_node;
for (link = 0; link < 4; link++) {
if (AMD_CpuFindCapability(node, link, &offset)) {
ganged = !!(pci_read_config32(NODE_PCI(node, 0), (link << 2) + 0x170) & 0x1);
--
1.9.1
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