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path: root/src/southbridge/amd/rs780/gfx.c
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Diffstat (limited to 'src/southbridge/amd/rs780/gfx.c')
-rw-r--r--src/southbridge/amd/rs780/gfx.c183
1 files changed, 181 insertions, 2 deletions
diff --git a/src/southbridge/amd/rs780/gfx.c b/src/southbridge/amd/rs780/gfx.c
index 973e9c017f..9262bb9437 100644
--- a/src/southbridge/amd/rs780/gfx.c
+++ b/src/southbridge/amd/rs780/gfx.c
@@ -303,6 +303,43 @@ static void ProgramMMIO(MMIORANGE *pMMIO, u8 LinkID, u8 Attribute)
}
#endif
+#define GFX_CONFIG_DDI1 0x04
+#define GFX_CONFIG_DDI2 0x08
+#define GFX_CONFIG_DDI (GFX_CONFIG_DDI1 | GFX_CONFIG_DDI2)
+
+/**
+ * Force poweron pads for lanes used for DDI
+ * reference CIMx PCIEL_PowerOnDDILanes()
+ *
+ * Inactive B_PRX_PDNB_FDIS B_PTX_PDNB_FDIS
+ * Lanes
+ * Lanes 0-1 Bit 8 Bit 0
+ * Lanes 2-3 Bit 9 Bit 1
+ * Lanes 4-5 Bit 10 Bit 2
+ * Lanes 6-7 Bit 11 Bit 3
+ * Lanes 8-9 Bit 12 Bit 4
+ * Lanes 10-11 Bit 13 Bit 5
+ * Lanes 12-13 Bit 14 Bit 6
+ * Lanes 14-15 Bit 15 Bit 7
+ */
+static void poweron_ddi_lanes(device_t nb_dev)
+{
+ u8 i;
+ u32 gfx_cfg = 0;
+ u32 ddi_pads = 0;
+
+ ddi_pads = ~(nbpcie_ind_read_index(nb_dev, 0x65)); /* save original setting */
+ gfx_cfg = nbmisc_read_index(nb_dev, 0x74);
+ for (i = 0; i < 3 ; i++) {
+ if (gfx_cfg & GFX_CONFIG_DDI) {
+ ddi_pads |= (3 << (i * 2));
+ }
+ gfx_cfg >>= 8;
+ }
+ ddi_pads |= ddi_pads << 8; /* both TX and RX */
+ nbpcie_ind_write_index(nb_dev, 0x65, ~ddi_pads);
+}
+
static void internal_gfx_pci_dev_init(struct device *dev)
{
unsigned char * bpointer;
@@ -535,6 +572,9 @@ static void internal_gfx_pci_dev_init(struct device *dev)
}
}
+ /* Poweron DDI Lanes */
+ poweron_ddi_lanes(nb_dev);
+
/* Transfer the Table to VBIOS. */
pointer = (u32 *)&vgainfo;
for(i=0; i<sizeof(ATOM_INTEGRATED_SYSTEM_INFO_V2); i+=4)
@@ -1111,6 +1151,147 @@ void rs780_gfx_init(device_t nb_dev, device_t dev, u32 port)
/* step 2, TMDS, (only need if CMOS option is enabled) */
if (cfg->gfx_tmds) {
+ /**
+ * PCIe Initialization for DDI.
+ * The VBIOS/Driver is responsible for DDI programming sequence,
+ * The SBIOS is responsible for programming the lane and clock muxing specific to each case.
+ * Refer to RPR Chapter 7: "PCIe Initialization for DDI".
+ * Note: This programming must be done before hold training is released.
+ */
+ switch (cfg->gfx_pcie_config) {
+ case 1: /* 1x16 GFX -default case, no programming required */
+ break;
+ case 2: /* 1x8 GFX on Lanes 0-7 */
+ case 5: /* 1x4 GPP on Lanes 0-3 */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 6, 0x1 << 6); /* Disables PCIe mode on PHY Lanes 8-11 */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 7, 0x1 << 7); /* Disables PCIe mode on PHY Lanes 12-15 */
+ break;
+ case 3: /* 1x8 on Lanes 8-15 */
+ case 7: /* 1x4 GPP on Lanes 8-11 */
+ /* TXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 16, 1 << 16);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0xF << 12, 0xF << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0x3 << 24, 0x2 << 24);
+ set_nbmisc_enable_bits(nb_dev, 0x28, 0x3 << 0, 0x0 << 0);
+ /* RXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 8, 0x2 << 8);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 10, 0x2 << 10);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 12, 0x2 << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 14, 0x2 << 14);
+ /* TX Lane Muxing */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 2, 0x1 << 2);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 3, 0x1 << 3);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 4, 0x1 << 4);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 5, 0x1 << 5);
+ break;
+ case 4: /* 2x8 */
+ case 10: /* 1x4 GPP on Lanes 0-3 and 1x4 GPP on Lanes 8-11 */
+ case 14: /* 1x8 GFX on Lanes 0-7 and 1x4 GPP on Lanes 8-11 */
+ case 17: /* 1x4 GPP on Lanes 0-3 and 1x8 GFX on Lanes 8-15 */
+ /* Set dual slot configuration */
+ set_nbmisc_enable_bits(nb_dev, 0x08, 0xF << 8, 0x5 << 8);
+ break;
+ case 9: /* PCIe 2x4 GPPs on Lanes 0-7 */
+ case 6: /* PCIe 1x4 GPP on Lanes 4-7 */
+ /* Set dual slot configuration */
+ set_nbmisc_enable_bits(nb_dev, 0x08, 0xF << 8, 0x5 << 8);
+ /* TXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 16, 0 << 16);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0xF << 12, 0x0 << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0x3 << 20, 0x0 << 20);
+ set_nbmisc_enable_bits(nb_dev, 0x28, 0x1 << 0, 0x0 << 0);
+ /* RXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 8, 0x0 << 8);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 10, 0x1 << 10);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 12, 0x3 << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 14, 0x0 << 14);
+ /* TX Lane Muxing */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 1, 0x1 << 1);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 6, 0x1 << 6);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 7, 0x1 << 7);
+ break;
+ case 13: /* 2x4 GPPs on Lanes 8-15 */
+ case 8: /* 1x4 GPP on Lanes 12-15 */
+ /* Set dual slot configuration */
+ set_nbmisc_enable_bits(nb_dev, 0x08, 0xF << 8, 0x5 << 8);
+ /* TXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 16, 1 << 16);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0xF << 12, 0xF << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0x3 << 24, 0x2 << 24);
+ set_nbmisc_enable_bits(nb_dev, 0x28, 0x3 << 0, 0x3 << 0);
+ /* RXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 8, 0x2 << 8);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 10, 0x3 << 10);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 12, 0x1 << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 14, 0x2 << 14);
+ /* TX Lane Muxing */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 2, 0x1 << 2);
+ set_nbmisc_enable_bits(nb_dev, 0x28, 0x1 << 14, 0x1 << 14);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 4, 0x1 << 4);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 5, 0x1 << 5);
+ break;
+ case 15: /* 1x8 GFX on Lanes 0-7 and 1x4 GPP on Lanes 12-15 */
+ case 11: /* 1x4 GPP on Lanes 0-3 and 1x4 GPP on Lanes 12-15 */
+ /* Set dual slot configuration */
+ set_nbmisc_enable_bits(nb_dev, 0x08, 0xF << 8, 0x5 << 8);
+ /* TXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 16, 0 << 16);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0xF << 12, 0x0 << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0x3 << 20, 0x0 << 20);
+ set_nbmisc_enable_bits(nb_dev, 0x28, 0x3 << 0, 0x1 << 0);
+ /* RXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 8, 0x0 << 8);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 10, 0x0 << 10);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 12, 0x1 << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 14, 0x3 << 14);
+ /* TX Lane Muxing */
+ set_nbmisc_enable_bits(nb_dev, 0x28, 0x1 << 14, 0x1 << 14);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 6, 0x1 << 6);
+ break;
+ case 16: /* 1x8 GFX on Lanes 8-15 and 1x4 GPP on Lanes 4-7 */
+ case 12: /* 1x4 GPP on Lanes 4-7 and 1x8 GFX on Lanes 8-15 */
+ /* Set dual slot configuration */
+ set_nbmisc_enable_bits(nb_dev, 0x08, 0xF << 8, 0x5 << 8);
+ /* TXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 16, 1 << 16);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0xF << 12, 0xF << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0x3 << 24, 0x2 << 24);
+ set_nbmisc_enable_bits(nb_dev, 0x07, 0x3 << 22, 0x2 << 22);
+ set_nbmisc_enable_bits(nb_dev, 0x28, 0x3 << 0, 0x2 << 0);
+ /* RXCLK */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 8, 0x2 << 8);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 10, 0x2 << 10);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 12, 0x3 << 12);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x3 << 14, 0x1 << 14);
+ /* TX Lane Muxing */
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 2, 0x1 << 2);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 3, 0x1 << 3);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 1, 0x1 << 1);
+ set_nbmisc_enable_bits(nb_dev, 0x27, 0x1 << 4, 0x1 << 4);
+ break;
+ default:
+ printk(BIOS_INFO, "Incorrect configuration of external GFX slot.\n");
+ break;
+ }
+
+ /* DDI Configuration */
+ switch (cfg->gfx_ddi_config) {
+ case 1: /* DDI_SL lanes0-3 */
+ nbmisc_write_index(nb_dev, 0x74, GFX_CONFIG_DDI);
+ break;
+ case 2: /* DDI_SL lanes4-7 */
+ nbmisc_write_index(nb_dev, 0x74, (GFX_CONFIG_DDI << 8));
+ break;
+ case 5: /* DDI_SL lanes0-4, lanes4-7 */
+ nbmisc_write_index(nb_dev, 0x74, (GFX_CONFIG_DDI << 8) | GFX_CONFIG_DDI);
+ break;
+ case 6: /* DDI_DL lanes0-7 */
+ nbmisc_write_index(nb_dev, 0x74, (GFX_CONFIG_DDI << 8) | GFX_CONFIG_DDI);
+ break;
+ default:
+ printk(BIOS_INFO, "Incorrect configuration of external GFX slot.\n");
+ break;
+ }
}
#if 1 /* external clock mode */
@@ -1123,8 +1304,6 @@ void rs780_gfx_init(device_t nb_dev, device_t dev, u32 port)
/* 5.9.1.3 Selects the GFX REFCLK to be the source for PLL A. */
/* 5.9.1.4 Selects the GFX REFCLK to be the source for PLL B. */
/* 5.9.1.5 Selects the GFX REFCLK to be the source for PLL C. */
- set_nbmisc_enable_bits(nb_dev, 0x28, 3 << 6 | 3 << 8 | 3 << 10,
- 1 << 6 | 1 << 8 | 1 << 10);
reg32 = nbmisc_read_index(nb_dev, 0x28);
printk(BIOS_DEBUG, "misc 28 = %x\n", reg32);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 21:11:43 +0000