drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)

The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree.  The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 0 insertions, 534 deletions

diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c
deleted file mode 100644
index 07ad01247675..000000000000
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c
+++ /dev/null
@@ -1,534 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * 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 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 HOLDER(S) OR AUTHOR(S) 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.
- *
- * Authors: Ben Skeggs
- *          Roy Spliet
- */
-
-#include <engine/fifo.h>
-#include <subdev/bios.h>
-#include <subdev/bios/pll.h>
-#include <subdev/timer.h>
-
-#include "pll.h"
-
-#include "nva3.h"
-
-struct nva3_clock_priv {
-	struct nouveau_clock base;
-	struct nva3_clock_info eng[nv_clk_src_max];
-};
-
-static u32 read_clk(struct nva3_clock_priv *, int, bool);
-static u32 read_pll(struct nva3_clock_priv *, int, u32);
-
-static u32
-read_vco(struct nva3_clock_priv *priv, int clk)
-{
-	u32 sctl = nv_rd32(priv, 0x4120 + (clk * 4));
-
-	switch (sctl & 0x00000030) {
-	case 0x00000000:
-		return nv_device(priv)->crystal;
-	case 0x00000020:
-		return read_pll(priv, 0x41, 0x00e820);
-	case 0x00000030:
-		return read_pll(priv, 0x42, 0x00e8a0);
-	default:
-		return 0;
-	}
-}
-
-static u32
-read_clk(struct nva3_clock_priv *priv, int clk, bool ignore_en)
-{
-	u32 sctl, sdiv, sclk;
-
-	/* refclk for the 0xe8xx plls is a fixed frequency */
-	if (clk >= 0x40) {
-		if (nv_device(priv)->chipset == 0xaf) {
-			/* no joke.. seriously.. sigh.. */
-			return nv_rd32(priv, 0x00471c) * 1000;
-		}
-
-		return nv_device(priv)->crystal;
-	}
-
-	sctl = nv_rd32(priv, 0x4120 + (clk * 4));
-	if (!ignore_en && !(sctl & 0x00000100))
-		return 0;
-
-	/* out_alt */
-	if (sctl & 0x00000400)
-		return 108000;
-
-	/* vco_out */
-	switch (sctl & 0x00003000) {
-	case 0x00000000:
-		if (!(sctl & 0x00000200))
-			return nv_device(priv)->crystal;
-		return 0;
-	case 0x00002000:
-		if (sctl & 0x00000040)
-			return 108000;
-		return 100000;
-	case 0x00003000:
-		/* vco_enable */
-		if (!(sctl & 0x00000001))
-			return 0;
-
-		sclk = read_vco(priv, clk);
-		sdiv = ((sctl & 0x003f0000) >> 16) + 2;
-		return (sclk * 2) / sdiv;
-	default:
-		return 0;
-	}
-}
-
-static u32
-read_pll(struct nva3_clock_priv *priv, int clk, u32 pll)
-{
-	u32 ctrl = nv_rd32(priv, pll + 0);
-	u32 sclk = 0, P = 1, N = 1, M = 1;
-
-	if (!(ctrl & 0x00000008)) {
-		if (ctrl & 0x00000001) {
-			u32 coef = nv_rd32(priv, pll + 4);
-			M = (coef & 0x000000ff) >> 0;
-			N = (coef & 0x0000ff00) >> 8;
-			P = (coef & 0x003f0000) >> 16;
-
-			/* no post-divider on these..
-			 * XXX: it looks more like two post-"dividers" that
-			 * cross each other out in the default RPLL config */
-			if ((pll & 0x00ff00) == 0x00e800)
-				P = 1;
-
-			sclk = read_clk(priv, 0x00 + clk, false);
-		}
-	} else {
-		sclk = read_clk(priv, 0x10 + clk, false);
-	}
-
-	if (M * P)
-		return sclk * N / (M * P);
-	return 0;
-}
-
-static int
-nva3_clock_read(struct nouveau_clock *clk, enum nv_clk_src src)
-{
-	struct nva3_clock_priv *priv = (void *)clk;
-	u32 hsrc;
-
-	switch (src) {
-	case nv_clk_src_crystal:
-		return nv_device(priv)->crystal;
-	case nv_clk_src_core:
-	case nv_clk_src_core_intm:
-		return read_pll(priv, 0x00, 0x4200);
-	case nv_clk_src_shader:
-		return read_pll(priv, 0x01, 0x4220);
-	case nv_clk_src_mem:
-		return read_pll(priv, 0x02, 0x4000);
-	case nv_clk_src_disp:
-		return read_clk(priv, 0x20, false);
-	case nv_clk_src_vdec:
-		return read_clk(priv, 0x21, false);
-	case nv_clk_src_daemon:
-		return read_clk(priv, 0x25, false);
-	case nv_clk_src_host:
-		hsrc = (nv_rd32(priv, 0xc040) & 0x30000000) >> 28;
-		switch (hsrc) {
-		case 0:
-			return read_clk(priv, 0x1d, false);
-		case 2:
-		case 3:
-			return 277000;
-		default:
-			nv_error(clk, "unknown HOST clock source %d\n", hsrc);
-			return -EINVAL;
-		}
-	default:
-		nv_error(clk, "invalid clock source %d\n", src);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-int
-nva3_clk_info(struct nouveau_clock *clock, int clk, u32 khz,
-		struct nva3_clock_info *info)
-{
-	struct nva3_clock_priv *priv = (void *)clock;
-	u32 oclk, sclk, sdiv, diff;
-
-	info->clk = 0;
-
-	switch (khz) {
-	case 27000:
-		info->clk = 0x00000100;
-		return khz;
-	case 100000:
-		info->clk = 0x00002100;
-		return khz;
-	case 108000:
-		info->clk = 0x00002140;
-		return khz;
-	default:
-		sclk = read_vco(priv, clk);
-		sdiv = min((sclk * 2) / khz, (u32)65);
-		oclk = (sclk * 2) / sdiv;
-		diff = ((khz + 3000) - oclk);
-
-		/* When imprecise, play it safe and aim for a clock lower than
-		 * desired rather than higher */
-		if (diff < 0) {
-			sdiv++;
-			oclk = (sclk * 2) / sdiv;
-		}
-
-		/* divider can go as low as 2, limited here because NVIDIA
-		 * and the VBIOS on my NVA8 seem to prefer using the PLL
-		 * for 810MHz - is there a good reason?
-		 * XXX: PLLs with refclk 810MHz?  */
-		if (sdiv > 4) {
-			info->clk = (((sdiv - 2) << 16) | 0x00003100);
-			return oclk;
-		}
-
-		break;
-	}
-
-	return -ERANGE;
-}
-
-int
-nva3_pll_info(struct nouveau_clock *clock, int clk, u32 pll, u32 khz,
-		struct nva3_clock_info *info)
-{
-	struct nouveau_bios *bios = nouveau_bios(clock);
-	struct nva3_clock_priv *priv = (void *)clock;
-	struct nvbios_pll limits;
-	int P, N, M, diff;
-	int ret;
-
-	info->pll = 0;
-
-	/* If we can get a within [-2, 3) MHz of a divider, we'll disable the
-	 * PLL and use the divider instead. */
-	ret = nva3_clk_info(clock, clk, khz, info);
-	diff = khz - ret;
-	if (!pll || (diff >= -2000 && diff < 3000)) {
-		goto out;
-	}
-
-	/* Try with PLL */
-	ret = nvbios_pll_parse(bios, pll, &limits);
-	if (ret)
-		return ret;
-
-	ret = nva3_clk_info(clock, clk - 0x10, limits.refclk, info);
-	if (ret != limits.refclk)
-		return -EINVAL;
-
-	ret = nva3_pll_calc(nv_subdev(priv), &limits, khz, &N, NULL, &M, &P);
-	if (ret >= 0) {
-		info->pll = (P << 16) | (N << 8) | M;
-	}
-
-out:
-	info->fb_delay = max(((khz + 7566) / 15133), (u32) 18);
-
-	return ret ? ret : -ERANGE;
-}
-
-static int
-calc_clk(struct nva3_clock_priv *priv, struct nouveau_cstate *cstate,
-	 int clk, u32 pll, int idx)
-{
-	int ret = nva3_pll_info(&priv->base, clk, pll, cstate->domain[idx],
-				  &priv->eng[idx]);
-	if (ret >= 0)
-		return 0;
-	return ret;
-}
-
-static int
-calc_host(struct nva3_clock_priv *priv, struct nouveau_cstate *cstate)
-{
-	int ret = 0;
-	u32 kHz = cstate->domain[nv_clk_src_host];
-	struct nva3_clock_info *info = &priv->eng[nv_clk_src_host];
-
-	if (kHz == 277000) {
-		info->clk = 0;
-		info->host_out = NVA3_HOST_277;
-		return 0;
-	}
-
-	info->host_out = NVA3_HOST_CLK;
-
-	ret = nva3_clk_info(&priv->base, 0x1d, kHz, info);
-	if (ret >= 0)
-		return 0;
-	return ret;
-}
-
-int
-nva3_clock_pre(struct nouveau_clock *clk, unsigned long *flags)
-{
-	struct nouveau_fifo *pfifo = nouveau_fifo(clk);
-
-	/* halt and idle execution engines */
-	nv_mask(clk, 0x020060, 0x00070000, 0x00000000);
-	nv_mask(clk, 0x002504, 0x00000001, 0x00000001);
-	/* Wait until the interrupt handler is finished */
-	if (!nv_wait(clk, 0x000100, 0xffffffff, 0x00000000))
-		return -EBUSY;
-
-	if (pfifo)
-		pfifo->pause(pfifo, flags);
-
-	if (!nv_wait(clk, 0x002504, 0x00000010, 0x00000010))
-		return -EIO;
-	if (!nv_wait(clk, 0x00251c, 0x0000003f, 0x0000003f))
-		return -EIO;
-
-	return 0;
-}
-
-void
-nva3_clock_post(struct nouveau_clock *clk, unsigned long *flags)
-{
-	struct nouveau_fifo *pfifo = nouveau_fifo(clk);
-
-	if (pfifo && flags)
-		pfifo->start(pfifo, flags);
-
-	nv_mask(clk, 0x002504, 0x00000001, 0x00000000);
-	nv_mask(clk, 0x020060, 0x00070000, 0x00040000);
-}
-
-static void
-disable_clk_src(struct nva3_clock_priv *priv, u32 src)
-{
-	nv_mask(priv, src, 0x00000100, 0x00000000);
-	nv_mask(priv, src, 0x00000001, 0x00000000);
-}
-
-static void
-prog_pll(struct nva3_clock_priv *priv, int clk, u32 pll, int idx)
-{
-	struct nva3_clock_info *info = &priv->eng[idx];
-	const u32 src0 = 0x004120 + (clk * 4);
-	const u32 src1 = 0x004160 + (clk * 4);
-	const u32 ctrl = pll + 0;
-	const u32 coef = pll + 4;
-	u32 bypass;
-
-	if (info->pll) {
-		/* Always start from a non-PLL clock */
-		bypass = nv_rd32(priv, ctrl)  & 0x00000008;
-		if (!bypass) {
-			nv_mask(priv, src1, 0x00000101, 0x00000101);
-			nv_mask(priv, ctrl, 0x00000008, 0x00000008);
-			udelay(20);
-		}
-
-		nv_mask(priv, src0, 0x003f3141, 0x00000101 | info->clk);
-		nv_wr32(priv, coef, info->pll);
-		nv_mask(priv, ctrl, 0x00000015, 0x00000015);
-		nv_mask(priv, ctrl, 0x00000010, 0x00000000);
-		if (!nv_wait(priv, ctrl, 0x00020000, 0x00020000)) {
-			nv_mask(priv, ctrl, 0x00000010, 0x00000010);
-			nv_mask(priv, src0, 0x00000101, 0x00000000);
-			return;
-		}
-		nv_mask(priv, ctrl, 0x00000010, 0x00000010);
-		nv_mask(priv, ctrl, 0x00000008, 0x00000000);
-		disable_clk_src(priv, src1);
-	} else {
-		nv_mask(priv, src1, 0x003f3141, 0x00000101 | info->clk);
-		nv_mask(priv, ctrl, 0x00000018, 0x00000018);
-		udelay(20);
-		nv_mask(priv, ctrl, 0x00000001, 0x00000000);
-		disable_clk_src(priv, src0);
-	}
-}
-
-static void
-prog_clk(struct nva3_clock_priv *priv, int clk, int idx)
-{
-	struct nva3_clock_info *info = &priv->eng[idx];
-	nv_mask(priv, 0x004120 + (clk * 4), 0x003f3141, 0x00000101 | info->clk);
-}
-
-static void
-prog_host(struct nva3_clock_priv *priv)
-{
-	struct nva3_clock_info *info = &priv->eng[nv_clk_src_host];
-	u32 hsrc = (nv_rd32(priv, 0xc040));
-
-	switch (info->host_out) {
-	case NVA3_HOST_277:
-		if ((hsrc & 0x30000000) == 0) {
-			nv_wr32(priv, 0xc040, hsrc | 0x20000000);
-			disable_clk_src(priv, 0x4194);
-		}
-		break;
-	case NVA3_HOST_CLK:
-		prog_clk(priv, 0x1d, nv_clk_src_host);
-		if ((hsrc & 0x30000000) >= 0x20000000) {
-			nv_wr32(priv, 0xc040, hsrc & ~0x30000000);
-		}
-		break;
-	default:
-		break;
-	}
-
-	/* This seems to be a clock gating factor on idle, always set to 64 */
-	nv_wr32(priv, 0xc044, 0x3e);
-}
-
-static void
-prog_core(struct nva3_clock_priv *priv, int idx)
-{
-	struct nva3_clock_info *info = &priv->eng[idx];
-	u32 fb_delay = nv_rd32(priv, 0x10002c);
-
-	if (fb_delay < info->fb_delay)
-		nv_wr32(priv, 0x10002c, info->fb_delay);
-
-	prog_pll(priv, 0x00, 0x004200, idx);
-
-	if (fb_delay > info->fb_delay)
-		nv_wr32(priv, 0x10002c, info->fb_delay);
-}
-
-static int
-nva3_clock_calc(struct nouveau_clock *clk, struct nouveau_cstate *cstate)
-{
-	struct nva3_clock_priv *priv = (void *)clk;
-	struct nva3_clock_info *core = &priv->eng[nv_clk_src_core];
-	int ret;
-
-	if ((ret = calc_clk(priv, cstate, 0x10, 0x4200, nv_clk_src_core)) ||
-	    (ret = calc_clk(priv, cstate, 0x11, 0x4220, nv_clk_src_shader)) ||
-	    (ret = calc_clk(priv, cstate, 0x20, 0x0000, nv_clk_src_disp)) ||
-	    (ret = calc_clk(priv, cstate, 0x21, 0x0000, nv_clk_src_vdec)) ||
-	    (ret = calc_host(priv, cstate)))
-		return ret;
-
-	/* XXX: Should be reading the highest bit in the VBIOS clock to decide
-	 * whether to use a PLL or not... but using a PLL defeats the purpose */
-	if (core->pll) {
-		ret = nva3_clk_info(clk, 0x10,
-				cstate->domain[nv_clk_src_core_intm],
-				&priv->eng[nv_clk_src_core_intm]);
-		if (ret < 0)
-			return ret;
-	}
-
-	return 0;
-}
-
-static int
-nva3_clock_prog(struct nouveau_clock *clk)
-{
-	struct nva3_clock_priv *priv = (void *)clk;
-	struct nva3_clock_info *core = &priv->eng[nv_clk_src_core];
-	int ret = 0;
-	unsigned long flags;
-	unsigned long *f = &flags;
-
-	ret = nva3_clock_pre(clk, f);
-	if (ret)
-		goto out;
-
-	if (core->pll)
-		prog_core(priv, nv_clk_src_core_intm);
-
-	prog_core(priv,  nv_clk_src_core);
-	prog_pll(priv, 0x01, 0x004220, nv_clk_src_shader);
-	prog_clk(priv, 0x20, nv_clk_src_disp);
-	prog_clk(priv, 0x21, nv_clk_src_vdec);
-	prog_host(priv);
-
-out:
-	if (ret == -EBUSY)
-		f = NULL;
-
-	nva3_clock_post(clk, f);
-
-	return ret;
-}
-
-static void
-nva3_clock_tidy(struct nouveau_clock *clk)
-{
-}
-
-static struct nouveau_clocks
-nva3_domain[] = {
-	{ nv_clk_src_crystal  , 0xff },
-	{ nv_clk_src_core     , 0x00, 0, "core", 1000 },
-	{ nv_clk_src_shader   , 0x01, 0, "shader", 1000 },
-	{ nv_clk_src_mem      , 0x02, 0, "memory", 1000 },
-	{ nv_clk_src_vdec     , 0x03 },
-	{ nv_clk_src_disp     , 0x04 },
-	{ nv_clk_src_host     , 0x05 },
-	{ nv_clk_src_core_intm, 0x06 },
-	{ nv_clk_src_max }
-};
-
-static int
-nva3_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
-		struct nouveau_oclass *oclass, void *data, u32 size,
-		struct nouveau_object **pobject)
-{
-	struct nva3_clock_priv *priv;
-	int ret;
-
-	ret = nouveau_clock_create(parent, engine, oclass, nva3_domain, NULL, 0,
-				   true, &priv);
-	*pobject = nv_object(priv);
-	if (ret)
-		return ret;
-
-	priv->base.read = nva3_clock_read;
-	priv->base.calc = nva3_clock_calc;
-	priv->base.prog = nva3_clock_prog;
-	priv->base.tidy = nva3_clock_tidy;
-	return 0;
-}
-
-struct nouveau_oclass
-nva3_clock_oclass = {
-	.handle = NV_SUBDEV(CLOCK, 0xa3),
-	.ofuncs = &(struct nouveau_ofuncs) {
-		.ctor = nva3_clock_ctor,
-		.dtor = _nouveau_clock_dtor,
-		.init = _nouveau_clock_init,
-		.fini = _nouveau_clock_fini,
-	},
-};