drm/nv50/disp: move remaining interrupt handling into core
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
index 1b1a384..c9cfd02 100644
--- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
@@ -30,9 +30,15 @@
#include <engine/software.h>
#include <engine/disp.h>
+#include <subdev/bios.h>
+#include <subdev/bios/dcb.h>
+#include <subdev/bios/disp.h>
+#include <subdev/bios/init.h>
+#include <subdev/bios/pll.h>
#include <subdev/timer.h>
#include <subdev/fb.h>
#include <subdev/bar.h>
+#include <subdev/clock.h>
#include "nv50.h"
@@ -730,6 +736,27 @@
******************************************************************************/
static void
+nv50_disp_intr_error(struct nv50_disp_priv *priv)
+{
+ u32 channels = (nv_rd32(priv, 0x610020) & 0x001f0000) >> 16;
+ u32 addr, data;
+ int chid;
+
+ for (chid = 0; chid < 5; chid++) {
+ if (!(channels & (1 << chid)))
+ continue;
+
+ nv_wr32(priv, 0x610020, 0x00010000 << chid);
+ addr = nv_rd32(priv, 0x610080 + (chid * 0x08));
+ data = nv_rd32(priv, 0x610084 + (chid * 0x08));
+ nv_wr32(priv, 0x610080 + (chid * 0x08), 0x90000000);
+
+ nv_error(priv, "chid %d mthd 0x%04x data 0x%08x 0x%08x\n",
+ chid, addr & 0xffc, data, addr);
+ }
+}
+
+static void
nv50_disp_intr_vblank(struct nv50_disp_priv *priv, int crtc)
{
struct nouveau_disp *disp = &priv->base;
@@ -766,24 +793,413 @@
disp->vblank.notify(disp->vblank.data, crtc);
}
+static u16
+exec_lookup(struct nv50_disp_priv *priv, int head, int outp, u32 ctrl,
+ struct dcb_output *dcb, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+ struct nvbios_outp *info)
+{
+ struct nouveau_bios *bios = nouveau_bios(priv);
+ u16 mask, type, data;
+
+ if (outp < 4) {
+ type = DCB_OUTPUT_ANALOG;
+ mask = 0;
+ } else {
+ outp -= 4;
+ switch (ctrl & 0x00000f00) {
+ case 0x00000000: type = DCB_OUTPUT_LVDS; mask = 1; break;
+ case 0x00000100: type = DCB_OUTPUT_TMDS; mask = 1; break;
+ case 0x00000200: type = DCB_OUTPUT_TMDS; mask = 2; break;
+ case 0x00000500: type = DCB_OUTPUT_TMDS; mask = 3; break;
+ case 0x00000800: type = DCB_OUTPUT_DP; mask = 1; break;
+ case 0x00000900: type = DCB_OUTPUT_DP; mask = 2; break;
+ default:
+ nv_error(priv, "unknown SOR mc 0x%08x\n", ctrl);
+ return 0x0000;
+ }
+ }
+
+ mask = 0x00c0 & (mask << 6);
+ mask |= 0x0001 << outp;
+ mask |= 0x0100 << head;
+
+ data = dcb_outp_match(bios, type, mask, ver, hdr, dcb);
+ if (!data)
+ return 0x0000;
+
+ return nvbios_outp_match(bios, type, mask, ver, hdr, cnt, len, info);
+}
+
+static bool
+exec_script(struct nv50_disp_priv *priv, int head, int id)
+{
+ struct nouveau_bios *bios = nouveau_bios(priv);
+ struct nvbios_outp info;
+ struct dcb_output dcb;
+ u8 ver, hdr, cnt, len;
+ u16 data;
+ u32 ctrl = 0x00000000;
+ int i;
+
+ for (i = 0; !(ctrl & (1 << head)) && i < 3; i++)
+ ctrl = nv_rd32(priv, 0x610b5c + (i * 8));
+
+ if (nv_device(priv)->chipset < 0x90 ||
+ nv_device(priv)->chipset == 0x92 ||
+ nv_device(priv)->chipset == 0xa0) {
+ for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
+ ctrl = nv_rd32(priv, 0x610b74 + (i * 8));
+ i += 3;
+ } else {
+ for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
+ ctrl = nv_rd32(priv, 0x610798 + (i * 8));
+ i += 3;
+ }
+
+ if (!(ctrl & (1 << head)))
+ return false;
+
+ data = exec_lookup(priv, head, i, ctrl, &dcb, &ver, &hdr, &cnt, &len, &info);
+ if (data) {
+ struct nvbios_init init = {
+ .subdev = nv_subdev(priv),
+ .bios = bios,
+ .offset = info.script[id],
+ .outp = &dcb,
+ .crtc = head,
+ .execute = 1,
+ };
+
+ return nvbios_exec(&init) == 0;
+ }
+
+ return false;
+}
+
+static u32
+exec_clkcmp(struct nv50_disp_priv *priv, int head, int id, u32 pclk,
+ struct dcb_output *outp)
+{
+ struct nouveau_bios *bios = nouveau_bios(priv);
+ struct nvbios_outp info1;
+ struct nvbios_ocfg info2;
+ u8 ver, hdr, cnt, len;
+ u16 data, conf;
+ u32 ctrl = 0x00000000;
+ int i;
+
+ for (i = 0; !(ctrl & (1 << head)) && i < 3; i++)
+ ctrl = nv_rd32(priv, 0x610b58 + (i * 8));
+
+ if (nv_device(priv)->chipset < 0x90 ||
+ nv_device(priv)->chipset == 0x92 ||
+ nv_device(priv)->chipset == 0xa0) {
+ for (i = 0; !(ctrl & (1 << head)) && i < 2; i++)
+ ctrl = nv_rd32(priv, 0x610b70 + (i * 8));
+ i += 3;
+ } else {
+ for (i = 0; !(ctrl & (1 << head)) && i < 4; i++)
+ ctrl = nv_rd32(priv, 0x610794 + (i * 8));
+ i += 3;
+ }
+
+ if (!(ctrl & (1 << head)))
+ return 0x0000;
+
+ data = exec_lookup(priv, head, i, ctrl, outp, &ver, &hdr, &cnt, &len, &info1);
+ if (!data)
+ return 0x0000;
+
+ switch (outp->type) {
+ case DCB_OUTPUT_TMDS:
+ conf = (ctrl & 0x00000f00) >> 8;
+ if (pclk >= 165000)
+ conf |= 0x0100;
+ break;
+ case DCB_OUTPUT_LVDS:
+ conf = priv->sor.lvdsconf;
+ break;
+ case DCB_OUTPUT_DP:
+ conf = (ctrl & 0x00000f00) >> 8;
+ break;
+ case DCB_OUTPUT_ANALOG:
+ default:
+ conf = 0x00ff;
+ break;
+ }
+
+ data = nvbios_ocfg_match(bios, data, conf, &ver, &hdr, &cnt, &len, &info2);
+ if (data) {
+ data = nvbios_oclk_match(bios, info2.clkcmp[id], pclk);
+ if (data) {
+ struct nvbios_init init = {
+ .subdev = nv_subdev(priv),
+ .bios = bios,
+ .offset = data,
+ .outp = outp,
+ .crtc = head,
+ .execute = 1,
+ };
+
+ if (nvbios_exec(&init))
+ return 0x0000;
+ return conf;
+ }
+ }
+
+ return 0x0000;
+}
+
+static void
+nv50_disp_intr_unk10(struct nv50_disp_priv *priv, u32 super)
+{
+ int head = ffs((super & 0x00000060) >> 5) - 1;
+ if (head >= 0) {
+ head = ffs((super & 0x00000180) >> 7) - 1;
+ if (head >= 0)
+ exec_script(priv, head, 1);
+ }
+
+ nv_wr32(priv, 0x610024, 0x00000010);
+ nv_wr32(priv, 0x610030, 0x80000000);
+}
+
+static void
+nv50_disp_intr_unk20_dp(struct nv50_disp_priv *priv,
+ struct dcb_output *outp, u32 pclk)
+{
+ const int link = !(outp->sorconf.link & 1);
+ const int or = ffs(outp->or) - 1;
+ const u32 soff = ( or * 0x800);
+ const u32 loff = (link * 0x080) + soff;
+ const u32 ctrl = nv_rd32(priv, 0x610794 + (or * 8));
+ const u32 bits = ((ctrl & 0x000f0000) == 0x00020000) ? 18 : 24;
+ const u32 symbol = 100000;
+ u32 dpctrl = nv_rd32(priv, 0x61c10c + loff) & 0x0000f0000;
+ u32 clksor = nv_rd32(priv, 0x614300 + soff);
+ int bestTU = 0, bestVTUi = 0, bestVTUf = 0, bestVTUa = 0;
+ int TU, VTUi, VTUf, VTUa;
+ u64 link_data_rate, link_ratio, unk;
+ u32 best_diff = 64 * symbol;
+ u32 link_nr, link_bw, r;
+
+ /* calculate packed data rate for each lane */
+ if (dpctrl > 0x00030000) link_nr = 4;
+ else if (dpctrl > 0x00010000) link_nr = 2;
+ else link_nr = 1;
+
+ if (clksor & 0x000c0000)
+ link_bw = 270000;
+ else
+ link_bw = 162000;
+
+ link_data_rate = (pclk * bits / 8) / link_nr;
+
+ /* calculate ratio of packed data rate to link symbol rate */
+ link_ratio = link_data_rate * symbol;
+ r = do_div(link_ratio, link_bw);
+
+ for (TU = 64; TU >= 32; TU--) {
+ /* calculate average number of valid symbols in each TU */
+ u32 tu_valid = link_ratio * TU;
+ u32 calc, diff;
+
+ /* find a hw representation for the fraction.. */
+ VTUi = tu_valid / symbol;
+ calc = VTUi * symbol;
+ diff = tu_valid - calc;
+ if (diff) {
+ if (diff >= (symbol / 2)) {
+ VTUf = symbol / (symbol - diff);
+ if (symbol - (VTUf * diff))
+ VTUf++;
+
+ if (VTUf <= 15) {
+ VTUa = 1;
+ calc += symbol - (symbol / VTUf);
+ } else {
+ VTUa = 0;
+ VTUf = 1;
+ calc += symbol;
+ }
+ } else {
+ VTUa = 0;
+ VTUf = min((int)(symbol / diff), 15);
+ calc += symbol / VTUf;
+ }
+
+ diff = calc - tu_valid;
+ } else {
+ /* no remainder, but the hw doesn't like the fractional
+ * part to be zero. decrement the integer part and
+ * have the fraction add a whole symbol back
+ */
+ VTUa = 0;
+ VTUf = 1;
+ VTUi--;
+ }
+
+ if (diff < best_diff) {
+ best_diff = diff;
+ bestTU = TU;
+ bestVTUa = VTUa;
+ bestVTUf = VTUf;
+ bestVTUi = VTUi;
+ if (diff == 0)
+ break;
+ }
+ }
+
+ if (!bestTU) {
+ nv_error(priv, "unable to find suitable dp config\n");
+ return;
+ }
+
+ /* XXX close to vbios numbers, but not right */
+ unk = (symbol - link_ratio) * bestTU;
+ unk *= link_ratio;
+ r = do_div(unk, symbol);
+ r = do_div(unk, symbol);
+ unk += 6;
+
+ nv_mask(priv, 0x61c10c + loff, 0x000001fc, bestTU << 2);
+ nv_mask(priv, 0x61c128 + loff, 0x010f7f3f, bestVTUa << 24 |
+ bestVTUf << 16 |
+ bestVTUi << 8 | unk);
+}
+
+static void
+nv50_disp_intr_unk20(struct nv50_disp_priv *priv, u32 super)
+{
+ struct dcb_output outp;
+ u32 addr, mask, data;
+ int head;
+
+ /* finish detaching encoder? */
+ head = ffs((super & 0x00000180) >> 7) - 1;
+ if (head >= 0)
+ exec_script(priv, head, 2);
+
+ /* check whether a vpll change is required */
+ head = ffs((super & 0x00000600) >> 9) - 1;
+ if (head >= 0) {
+ u32 pclk = nv_rd32(priv, 0x610ad0 + (head * 0x540)) & 0x3fffff;
+ if (pclk) {
+ struct nouveau_clock *clk = nouveau_clock(priv);
+ clk->pll_set(clk, PLL_VPLL0 + head, pclk);
+ }
+
+ nv_mask(priv, 0x614200 + head * 0x800, 0x0000000f, 0x00000000);
+ }
+
+ /* (re)attach the relevant OR to the head */
+ head = ffs((super & 0x00000180) >> 7) - 1;
+ if (head >= 0) {
+ u32 pclk = nv_rd32(priv, 0x610ad0 + (head * 0x540)) & 0x3fffff;
+ u32 conf = exec_clkcmp(priv, head, 0, pclk, &outp);
+ if (conf) {
+ if (outp.type == DCB_OUTPUT_ANALOG) {
+ addr = 0x614280 + (ffs(outp.or) - 1) * 0x800;
+ mask = 0xffffffff;
+ data = 0x00000000;
+ } else {
+ if (outp.type == DCB_OUTPUT_DP)
+ nv50_disp_intr_unk20_dp(priv, &outp, pclk);
+ addr = 0x614300 + (ffs(outp.or) - 1) * 0x800;
+ mask = 0x00000707;
+ data = (conf & 0x0100) ? 0x0101 : 0x0000;
+ }
+
+ nv_mask(priv, addr, mask, data);
+ }
+ }
+
+ nv_wr32(priv, 0x610024, 0x00000020);
+ nv_wr32(priv, 0x610030, 0x80000000);
+}
+
+/* If programming a TMDS output on a SOR that can also be configured for
+ * DisplayPort, make sure NV50_SOR_DP_CTRL_ENABLE is forced off.
+ *
+ * It looks like the VBIOS TMDS scripts make an attempt at this, however,
+ * the VBIOS scripts on at least one board I have only switch it off on
+ * link 0, causing a blank display if the output has previously been
+ * programmed for DisplayPort.
+ */
+static void
+nv50_disp_intr_unk40_tmds(struct nv50_disp_priv *priv, struct dcb_output *outp)
+{
+ struct nouveau_bios *bios = nouveau_bios(priv);
+ const int link = !(outp->sorconf.link & 1);
+ const int or = ffs(outp->or) - 1;
+ const u32 loff = (or * 0x800) + (link * 0x80);
+ const u16 mask = (outp->sorconf.link << 6) | outp->or;
+ u8 ver, hdr;
+
+ if (dcb_outp_match(bios, DCB_OUTPUT_DP, mask, &ver, &hdr, outp))
+ nv_mask(priv, 0x61c10c + loff, 0x00000001, 0x00000000);
+}
+
+static void
+nv50_disp_intr_unk40(struct nv50_disp_priv *priv, u32 super)
+{
+ int head = ffs((super & 0x00000180) >> 7) - 1;
+ if (head >= 0) {
+ struct dcb_output outp;
+ u32 pclk = nv_rd32(priv, 0x610ad0 + (head * 0x540)) & 0x3fffff;
+ if (pclk && exec_clkcmp(priv, head, 1, pclk, &outp)) {
+ if (outp.type == DCB_OUTPUT_TMDS)
+ nv50_disp_intr_unk40_tmds(priv, &outp);
+ }
+ }
+
+ nv_wr32(priv, 0x610024, 0x00000040);
+ nv_wr32(priv, 0x610030, 0x80000000);
+}
+
+static void
+nv50_disp_intr_super(struct nv50_disp_priv *priv, u32 intr1)
+{
+ u32 super = nv_rd32(priv, 0x610030);
+
+ nv_debug(priv, "supervisor 0x%08x 0x%08x\n", intr1, super);
+
+ if (intr1 & 0x00000010)
+ nv50_disp_intr_unk10(priv, super);
+ if (intr1 & 0x00000020)
+ nv50_disp_intr_unk20(priv, super);
+ if (intr1 & 0x00000040)
+ nv50_disp_intr_unk40(priv, super);
+}
+
void
nv50_disp_intr(struct nouveau_subdev *subdev)
{
struct nv50_disp_priv *priv = (void *)subdev;
- u32 stat1 = nv_rd32(priv, 0x610024);
+ u32 intr0 = nv_rd32(priv, 0x610020);
+ u32 intr1 = nv_rd32(priv, 0x610024);
- if (stat1 & 0x00000004) {
+ if (intr0 & 0x001f0000) {
+ nv50_disp_intr_error(priv);
+ intr0 &= ~0x001f0000;
+ }
+
+ if (intr1 & 0x00000004) {
nv50_disp_intr_vblank(priv, 0);
nv_wr32(priv, 0x610024, 0x00000004);
- stat1 &= ~0x00000004;
+ intr1 &= ~0x00000004;
}
- if (stat1 & 0x00000008) {
+ if (intr1 & 0x00000008) {
nv50_disp_intr_vblank(priv, 1);
nv_wr32(priv, 0x610024, 0x00000008);
- stat1 &= ~0x00000008;
+ intr1 &= ~0x00000008;
}
+ if (intr1 & 0x00000070) {
+ nv50_disp_intr_super(priv, intr1);
+ intr1 &= ~0x00000070;
+ }
}
static int