diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_sor.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_sor.c | 514 |
1 files changed, 514 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c new file mode 100644 index 00000000..27464021 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv50_sor.c @@ -0,0 +1,514 @@ +/* + * Copyright (C) 2008 Maarten Maathuis. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial + * portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include "drmP.h" +#include "drm_crtc_helper.h" + +#define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO) +#include "nouveau_reg.h" +#include "nouveau_drv.h" +#include "nouveau_dma.h" +#include "nouveau_encoder.h" +#include "nouveau_connector.h" +#include "nouveau_crtc.h" +#include "nv50_display.h" + +static u32 +nv50_sor_dp_lane_map(struct drm_device *dev, struct dcb_entry *dcb, u8 lane) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + static const u8 nvaf[] = { 24, 16, 8, 0 }; /* thanks, apple.. */ + static const u8 nv50[] = { 16, 8, 0, 24 }; + if (dev_priv->chipset == 0xaf) + return nvaf[lane]; + return nv50[lane]; +} + +static void +nv50_sor_dp_train_set(struct drm_device *dev, struct dcb_entry *dcb, u8 pattern) +{ + u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1); + nv_mask(dev, NV50_SOR_DP_CTRL(or, link), 0x0f000000, pattern << 24); +} + +static void +nv50_sor_dp_train_adj(struct drm_device *dev, struct dcb_entry *dcb, + u8 lane, u8 swing, u8 preem) +{ + u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1); + u32 shift = nv50_sor_dp_lane_map(dev, dcb, lane); + u32 mask = 0x000000ff << shift; + u8 *table, *entry, *config; + + table = nouveau_dp_bios_data(dev, dcb, &entry); + if (!table || (table[0] != 0x20 && table[0] != 0x21)) { + NV_ERROR(dev, "PDISP: unsupported DP table for chipset\n"); + return; + } + + config = entry + table[4]; + while (config[0] != swing || config[1] != preem) { + config += table[5]; + if (config >= entry + table[4] + entry[4] * table[5]) + return; + } + + nv_mask(dev, NV50_SOR_DP_UNK118(or, link), mask, config[2] << shift); + nv_mask(dev, NV50_SOR_DP_UNK120(or, link), mask, config[3] << shift); + nv_mask(dev, NV50_SOR_DP_UNK130(or, link), 0x0000ff00, config[4] << 8); +} + +static void +nv50_sor_dp_link_set(struct drm_device *dev, struct dcb_entry *dcb, int crtc, + int link_nr, u32 link_bw, bool enhframe) +{ + u32 or = ffs(dcb->or) - 1, link = !(dcb->sorconf.link & 1); + u32 dpctrl = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link)) & ~0x001f4000; + u32 clksor = nv_rd32(dev, 0x614300 + (or * 0x800)) & ~0x000c0000; + u8 *table, *entry, mask; + int i; + + table = nouveau_dp_bios_data(dev, dcb, &entry); + if (!table || (table[0] != 0x20 && table[0] != 0x21)) { + NV_ERROR(dev, "PDISP: unsupported DP table for chipset\n"); + return; + } + + entry = ROMPTR(dev, entry[10]); + if (entry) { + while (link_bw < ROM16(entry[0]) * 10) + entry += 4; + + nouveau_bios_run_init_table(dev, ROM16(entry[2]), dcb, crtc); + } + + dpctrl |= ((1 << link_nr) - 1) << 16; + if (enhframe) + dpctrl |= 0x00004000; + + if (link_bw > 162000) + clksor |= 0x00040000; + + nv_wr32(dev, 0x614300 + (or * 0x800), clksor); + nv_wr32(dev, NV50_SOR_DP_CTRL(or, link), dpctrl); + + mask = 0; + for (i = 0; i < link_nr; i++) + mask |= 1 << (nv50_sor_dp_lane_map(dev, dcb, i) >> 3); + nv_mask(dev, NV50_SOR_DP_UNK130(or, link), 0x0000000f, mask); +} + +static void +nv50_sor_dp_link_get(struct drm_device *dev, u32 or, u32 link, u32 *nr, u32 *bw) +{ + u32 dpctrl = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link)) & 0x000f0000; + u32 clksor = nv_rd32(dev, 0x614300 + (or * 0x800)); + if (clksor & 0x000c0000) + *bw = 270000; + else + *bw = 162000; + + if (dpctrl > 0x00030000) *nr = 4; + else if (dpctrl > 0x00010000) *nr = 2; + else *nr = 1; +} + +void +nv50_sor_dp_calc_tu(struct drm_device *dev, int or, int link, u32 clk, u32 bpp) +{ + const u32 symbol = 100000; + 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 */ + nv50_sor_dp_link_get(dev, or, link, &link_nr, &link_bw); + link_data_rate = (clk * bpp / 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(dev, "DP: unable to find suitable 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(dev, NV50_SOR_DP_CTRL(or, link), 0x000001fc, bestTU << 2); + nv_mask(dev, NV50_SOR_DP_SCFG(or, link), 0x010f7f3f, bestVTUa << 24 | + bestVTUf << 16 | + bestVTUi << 8 | + unk); +} +static void +nv50_sor_disconnect(struct drm_encoder *encoder) +{ + struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); + struct drm_device *dev = encoder->dev; + struct nouveau_channel *evo = nv50_display(dev)->master; + int ret; + + if (!nv_encoder->crtc) + return; + nv50_crtc_blank(nouveau_crtc(nv_encoder->crtc), true); + + NV_DEBUG_KMS(dev, "Disconnecting SOR %d\n", nv_encoder->or); + + ret = RING_SPACE(evo, 4); + if (ret) { + NV_ERROR(dev, "no space while disconnecting SOR\n"); + return; + } + BEGIN_RING(evo, 0, NV50_EVO_SOR(nv_encoder->or, MODE_CTRL), 1); + OUT_RING (evo, 0); + BEGIN_RING(evo, 0, NV50_EVO_UPDATE, 1); + OUT_RING (evo, 0); + + nouveau_hdmi_mode_set(encoder, NULL); + + nv_encoder->crtc = NULL; + nv_encoder->last_dpms = DRM_MODE_DPMS_OFF; +} + +static void +nv50_sor_dpms(struct drm_encoder *encoder, int mode) +{ + struct drm_device *dev = encoder->dev; + struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); + struct drm_encoder *enc; + uint32_t val; + int or = nv_encoder->or; + + NV_DEBUG_KMS(dev, "or %d type %d mode %d\n", or, nv_encoder->dcb->type, mode); + + nv_encoder->last_dpms = mode; + list_for_each_entry(enc, &dev->mode_config.encoder_list, head) { + struct nouveau_encoder *nvenc = nouveau_encoder(enc); + + if (nvenc == nv_encoder || + (nvenc->dcb->type != OUTPUT_TMDS && + nvenc->dcb->type != OUTPUT_LVDS && + nvenc->dcb->type != OUTPUT_DP) || + nvenc->dcb->or != nv_encoder->dcb->or) + continue; + + if (nvenc->last_dpms == DRM_MODE_DPMS_ON) + return; + } + + /* wait for it to be done */ + if (!nv_wait(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or), + NV50_PDISPLAY_SOR_DPMS_CTRL_PENDING, 0)) { + NV_ERROR(dev, "timeout: SOR_DPMS_CTRL_PENDING(%d) == 0\n", or); + NV_ERROR(dev, "SOR_DPMS_CTRL(%d) = 0x%08x\n", or, + nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or))); + } + + val = nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or)); + + if (mode == DRM_MODE_DPMS_ON) + val |= NV50_PDISPLAY_SOR_DPMS_CTRL_ON; + else + val &= ~NV50_PDISPLAY_SOR_DPMS_CTRL_ON; + + nv_wr32(dev, NV50_PDISPLAY_SOR_DPMS_CTRL(or), val | + NV50_PDISPLAY_SOR_DPMS_CTRL_PENDING); + if (!nv_wait(dev, NV50_PDISPLAY_SOR_DPMS_STATE(or), + NV50_PDISPLAY_SOR_DPMS_STATE_WAIT, 0)) { + NV_ERROR(dev, "timeout: SOR_DPMS_STATE_WAIT(%d) == 0\n", or); + NV_ERROR(dev, "SOR_DPMS_STATE(%d) = 0x%08x\n", or, + nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_STATE(or))); + } + + if (nv_encoder->dcb->type == OUTPUT_DP) { + struct dp_train_func func = { + .link_set = nv50_sor_dp_link_set, + .train_set = nv50_sor_dp_train_set, + .train_adj = nv50_sor_dp_train_adj + }; + + nouveau_dp_dpms(encoder, mode, nv_encoder->dp.datarate, &func); + } +} + +static void +nv50_sor_save(struct drm_encoder *encoder) +{ + NV_ERROR(encoder->dev, "!!\n"); +} + +static void +nv50_sor_restore(struct drm_encoder *encoder) +{ + NV_ERROR(encoder->dev, "!!\n"); +} + +static bool +nv50_sor_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); + struct nouveau_connector *connector; + + NV_DEBUG_KMS(encoder->dev, "or %d\n", nv_encoder->or); + + connector = nouveau_encoder_connector_get(nv_encoder); + if (!connector) { + NV_ERROR(encoder->dev, "Encoder has no connector\n"); + return false; + } + + if (connector->scaling_mode != DRM_MODE_SCALE_NONE && + connector->native_mode) + drm_mode_copy(adjusted_mode, connector->native_mode); + + return true; +} + +static void +nv50_sor_prepare(struct drm_encoder *encoder) +{ + struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); + nv50_sor_disconnect(encoder); + if (nv_encoder->dcb->type == OUTPUT_DP) { + /* avoid race between link training and supervisor intr */ + nv50_display_sync(encoder->dev); + } +} + +static void +nv50_sor_commit(struct drm_encoder *encoder) +{ +} + +static void +nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *umode, + struct drm_display_mode *mode) +{ + struct nouveau_channel *evo = nv50_display(encoder->dev)->master; + struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); + struct drm_device *dev = encoder->dev; + struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc); + struct nouveau_connector *nv_connector; + uint32_t mode_ctl = 0; + int ret; + + NV_DEBUG_KMS(dev, "or %d type %d -> crtc %d\n", + nv_encoder->or, nv_encoder->dcb->type, crtc->index); + nv_encoder->crtc = encoder->crtc; + + switch (nv_encoder->dcb->type) { + case OUTPUT_TMDS: + if (nv_encoder->dcb->sorconf.link & 1) { + if (mode->clock < 165000) + mode_ctl = 0x0100; + else + mode_ctl = 0x0500; + } else + mode_ctl = 0x0200; + + nouveau_hdmi_mode_set(encoder, mode); + break; + case OUTPUT_DP: + nv_connector = nouveau_encoder_connector_get(nv_encoder); + if (nv_connector && nv_connector->base.display_info.bpc == 6) { + nv_encoder->dp.datarate = mode->clock * 18 / 8; + mode_ctl |= 0x00020000; + } else { + nv_encoder->dp.datarate = mode->clock * 24 / 8; + mode_ctl |= 0x00050000; + } + + if (nv_encoder->dcb->sorconf.link & 1) + mode_ctl |= 0x00000800; + else + mode_ctl |= 0x00000900; + break; + default: + break; + } + + if (crtc->index == 1) + mode_ctl |= NV50_EVO_SOR_MODE_CTRL_CRTC1; + else + mode_ctl |= NV50_EVO_SOR_MODE_CTRL_CRTC0; + + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + mode_ctl |= NV50_EVO_SOR_MODE_CTRL_NHSYNC; + + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + mode_ctl |= NV50_EVO_SOR_MODE_CTRL_NVSYNC; + + nv50_sor_dpms(encoder, DRM_MODE_DPMS_ON); + + ret = RING_SPACE(evo, 2); + if (ret) { + NV_ERROR(dev, "no space while connecting SOR\n"); + nv_encoder->crtc = NULL; + return; + } + BEGIN_RING(evo, 0, NV50_EVO_SOR(nv_encoder->or, MODE_CTRL), 1); + OUT_RING(evo, mode_ctl); +} + +static struct drm_crtc * +nv50_sor_crtc_get(struct drm_encoder *encoder) +{ + return nouveau_encoder(encoder)->crtc; +} + +static const struct drm_encoder_helper_funcs nv50_sor_helper_funcs = { + .dpms = nv50_sor_dpms, + .save = nv50_sor_save, + .restore = nv50_sor_restore, + .mode_fixup = nv50_sor_mode_fixup, + .prepare = nv50_sor_prepare, + .commit = nv50_sor_commit, + .mode_set = nv50_sor_mode_set, + .get_crtc = nv50_sor_crtc_get, + .detect = NULL, + .disable = nv50_sor_disconnect +}; + +static void +nv50_sor_destroy(struct drm_encoder *encoder) +{ + struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); + + if (!encoder) + return; + + NV_DEBUG_KMS(encoder->dev, "\n"); + + drm_encoder_cleanup(encoder); + + kfree(nv_encoder); +} + +static const struct drm_encoder_funcs nv50_sor_encoder_funcs = { + .destroy = nv50_sor_destroy, +}; + +int +nv50_sor_create(struct drm_connector *connector, struct dcb_entry *entry) +{ + struct nouveau_encoder *nv_encoder = NULL; + struct drm_device *dev = connector->dev; + struct drm_encoder *encoder; + int type; + + NV_DEBUG_KMS(dev, "\n"); + + switch (entry->type) { + case OUTPUT_TMDS: + case OUTPUT_DP: + type = DRM_MODE_ENCODER_TMDS; + break; + case OUTPUT_LVDS: + type = DRM_MODE_ENCODER_LVDS; + break; + default: + return -EINVAL; + } + + nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL); + if (!nv_encoder) + return -ENOMEM; + encoder = to_drm_encoder(nv_encoder); + + nv_encoder->dcb = entry; + nv_encoder->or = ffs(entry->or) - 1; + nv_encoder->last_dpms = DRM_MODE_DPMS_OFF; + + drm_encoder_init(dev, encoder, &nv50_sor_encoder_funcs, type); + drm_encoder_helper_add(encoder, &nv50_sor_helper_funcs); + + encoder->possible_crtcs = entry->heads; + encoder->possible_clones = 0; + + drm_mode_connector_attach_encoder(connector, encoder); + return 0; +} |