summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nouveau_calc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_calc.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_calc.c237
1 files changed, 12 insertions, 225 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_calc.c b/drivers/gpu/drm/nouveau/nouveau_calc.c
index dad96cce5e39..6da576445b3d 100644
--- a/drivers/gpu/drm/nouveau/nouveau_calc.c
+++ b/drivers/gpu/drm/nouveau/nouveau_calc.c
@@ -21,8 +21,10 @@
* SOFTWARE.
*/
-#include "drmP.h"
-#include "nouveau_drv.h"
+#include <drm/drmP.h>
+
+#include "nouveau_drm.h"
+#include "nouveau_reg.h"
#include "nouveau_hw.h"
/****************************************************************************\
@@ -195,12 +197,13 @@ static void
nv04_update_arb(struct drm_device *dev, int VClk, int bpp,
int *burst, int *lwm)
{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_drm *drm = nouveau_drm(dev);
+ struct nouveau_device *device = nouveau_dev(dev);
struct nv_fifo_info fifo_data;
struct nv_sim_state sim_data;
int MClk = nouveau_hw_get_clock(dev, PLL_MEMORY);
int NVClk = nouveau_hw_get_clock(dev, PLL_CORE);
- uint32_t cfg1 = nvReadFB(dev, NV04_PFB_CFG1);
+ uint32_t cfg1 = nv_rd32(device, NV04_PFB_CFG1);
sim_data.pclk_khz = VClk;
sim_data.mclk_khz = MClk;
@@ -218,13 +221,13 @@ nv04_update_arb(struct drm_device *dev, int VClk, int bpp,
sim_data.mem_latency = 3;
sim_data.mem_page_miss = 10;
} else {
- sim_data.memory_type = nvReadFB(dev, NV04_PFB_CFG0) & 0x1;
- sim_data.memory_width = (nvReadEXTDEV(dev, NV_PEXTDEV_BOOT_0) & 0x10) ? 128 : 64;
+ sim_data.memory_type = nv_rd32(device, NV04_PFB_CFG0) & 0x1;
+ sim_data.memory_width = (nv_rd32(device, NV_PEXTDEV_BOOT_0) & 0x10) ? 128 : 64;
sim_data.mem_latency = cfg1 & 0xf;
sim_data.mem_page_miss = ((cfg1 >> 4) & 0xf) + ((cfg1 >> 31) & 0x1);
}
- if (dev_priv->card_type == NV_04)
+ if (nv_device(drm->device)->card_type == NV_04)
nv04_calc_arb(&fifo_data, &sim_data);
else
nv10_calc_arb(&fifo_data, &sim_data);
@@ -249,9 +252,9 @@ nv20_update_arb(int *burst, int *lwm)
void
nouveau_calc_arb(struct drm_device *dev, int vclk, int bpp, int *burst, int *lwm)
{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_drm *drm = nouveau_drm(dev);
- if (dev_priv->card_type < NV_20)
+ if (nv_device(drm->device)->card_type < NV_20)
nv04_update_arb(dev, vclk, bpp, burst, lwm);
else if ((dev->pci_device & 0xfff0) == 0x0240 /*CHIPSET_C51*/ ||
(dev->pci_device & 0xfff0) == 0x03d0 /*CHIPSET_C512*/) {
@@ -260,219 +263,3 @@ nouveau_calc_arb(struct drm_device *dev, int vclk, int bpp, int *burst, int *lwm
} else
nv20_update_arb(burst, lwm);
}
-
-static int
-getMNP_single(struct drm_device *dev, struct pll_lims *pll_lim, int clk,
- struct nouveau_pll_vals *bestpv)
-{
- /* Find M, N and P for a single stage PLL
- *
- * Note that some bioses (NV3x) have lookup tables of precomputed MNP
- * values, but we're too lazy to use those atm
- *
- * "clk" parameter in kHz
- * returns calculated clock
- */
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- int cv = dev_priv->vbios.chip_version;
- int minvco = pll_lim->vco1.minfreq, maxvco = pll_lim->vco1.maxfreq;
- int minM = pll_lim->vco1.min_m, maxM = pll_lim->vco1.max_m;
- int minN = pll_lim->vco1.min_n, maxN = pll_lim->vco1.max_n;
- int minU = pll_lim->vco1.min_inputfreq;
- int maxU = pll_lim->vco1.max_inputfreq;
- int minP = pll_lim->max_p ? pll_lim->min_p : 0;
- int maxP = pll_lim->max_p ? pll_lim->max_p : pll_lim->max_usable_log2p;
- int crystal = pll_lim->refclk;
- int M, N, thisP, P;
- int clkP, calcclk;
- int delta, bestdelta = INT_MAX;
- int bestclk = 0;
-
- /* this division verified for nv20, nv18, nv28 (Haiku), and nv34 */
- /* possibly correlated with introduction of 27MHz crystal */
- if (dev_priv->card_type < NV_50) {
- if (cv < 0x17 || cv == 0x1a || cv == 0x20) {
- if (clk > 250000)
- maxM = 6;
- if (clk > 340000)
- maxM = 2;
- } else if (cv < 0x40) {
- if (clk > 150000)
- maxM = 6;
- if (clk > 200000)
- maxM = 4;
- if (clk > 340000)
- maxM = 2;
- }
- }
-
- P = pll_lim->max_p ? maxP : (1 << maxP);
- if ((clk * P) < minvco) {
- minvco = clk * maxP;
- maxvco = minvco * 2;
- }
-
- if (clk + clk/200 > maxvco) /* +0.5% */
- maxvco = clk + clk/200;
-
- /* NV34 goes maxlog2P->0, NV20 goes 0->maxlog2P */
- for (thisP = minP; thisP <= maxP; thisP++) {
- P = pll_lim->max_p ? thisP : (1 << thisP);
- clkP = clk * P;
-
- if (clkP < minvco)
- continue;
- if (clkP > maxvco)
- return bestclk;
-
- for (M = minM; M <= maxM; M++) {
- if (crystal/M < minU)
- return bestclk;
- if (crystal/M > maxU)
- continue;
-
- /* add crystal/2 to round better */
- N = (clkP * M + crystal/2) / crystal;
-
- if (N < minN)
- continue;
- if (N > maxN)
- break;
-
- /* more rounding additions */
- calcclk = ((N * crystal + P/2) / P + M/2) / M;
- delta = abs(calcclk - clk);
- /* we do an exhaustive search rather than terminating
- * on an optimality condition...
- */
- if (delta < bestdelta) {
- bestdelta = delta;
- bestclk = calcclk;
- bestpv->N1 = N;
- bestpv->M1 = M;
- bestpv->log2P = thisP;
- if (delta == 0) /* except this one */
- return bestclk;
- }
- }
- }
-
- return bestclk;
-}
-
-static int
-getMNP_double(struct drm_device *dev, struct pll_lims *pll_lim, int clk,
- struct nouveau_pll_vals *bestpv)
-{
- /* Find M, N and P for a two stage PLL
- *
- * Note that some bioses (NV30+) have lookup tables of precomputed MNP
- * values, but we're too lazy to use those atm
- *
- * "clk" parameter in kHz
- * returns calculated clock
- */
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- int chip_version = dev_priv->vbios.chip_version;
- int minvco1 = pll_lim->vco1.minfreq, maxvco1 = pll_lim->vco1.maxfreq;
- int minvco2 = pll_lim->vco2.minfreq, maxvco2 = pll_lim->vco2.maxfreq;
- int minU1 = pll_lim->vco1.min_inputfreq, minU2 = pll_lim->vco2.min_inputfreq;
- int maxU1 = pll_lim->vco1.max_inputfreq, maxU2 = pll_lim->vco2.max_inputfreq;
- int minM1 = pll_lim->vco1.min_m, maxM1 = pll_lim->vco1.max_m;
- int minN1 = pll_lim->vco1.min_n, maxN1 = pll_lim->vco1.max_n;
- int minM2 = pll_lim->vco2.min_m, maxM2 = pll_lim->vco2.max_m;
- int minN2 = pll_lim->vco2.min_n, maxN2 = pll_lim->vco2.max_n;
- int maxlog2P = pll_lim->max_usable_log2p;
- int crystal = pll_lim->refclk;
- bool fixedgain2 = (minM2 == maxM2 && minN2 == maxN2);
- int M1, N1, M2, N2, log2P;
- int clkP, calcclk1, calcclk2, calcclkout;
- int delta, bestdelta = INT_MAX;
- int bestclk = 0;
-
- int vco2 = (maxvco2 - maxvco2/200) / 2;
- for (log2P = 0; clk && log2P < maxlog2P && clk <= (vco2 >> log2P); log2P++)
- ;
- clkP = clk << log2P;
-
- if (maxvco2 < clk + clk/200) /* +0.5% */
- maxvco2 = clk + clk/200;
-
- for (M1 = minM1; M1 <= maxM1; M1++) {
- if (crystal/M1 < minU1)
- return bestclk;
- if (crystal/M1 > maxU1)
- continue;
-
- for (N1 = minN1; N1 <= maxN1; N1++) {
- calcclk1 = crystal * N1 / M1;
- if (calcclk1 < minvco1)
- continue;
- if (calcclk1 > maxvco1)
- break;
-
- for (M2 = minM2; M2 <= maxM2; M2++) {
- if (calcclk1/M2 < minU2)
- break;
- if (calcclk1/M2 > maxU2)
- continue;
-
- /* add calcclk1/2 to round better */
- N2 = (clkP * M2 + calcclk1/2) / calcclk1;
- if (N2 < minN2)
- continue;
- if (N2 > maxN2)
- break;
-
- if (!fixedgain2) {
- if (chip_version < 0x60)
- if (N2/M2 < 4 || N2/M2 > 10)
- continue;
-
- calcclk2 = calcclk1 * N2 / M2;
- if (calcclk2 < minvco2)
- break;
- if (calcclk2 > maxvco2)
- continue;
- } else
- calcclk2 = calcclk1;
-
- calcclkout = calcclk2 >> log2P;
- delta = abs(calcclkout - clk);
- /* we do an exhaustive search rather than terminating
- * on an optimality condition...
- */
- if (delta < bestdelta) {
- bestdelta = delta;
- bestclk = calcclkout;
- bestpv->N1 = N1;
- bestpv->M1 = M1;
- bestpv->N2 = N2;
- bestpv->M2 = M2;
- bestpv->log2P = log2P;
- if (delta == 0) /* except this one */
- return bestclk;
- }
- }
- }
- }
-
- return bestclk;
-}
-
-int
-nouveau_calc_pll_mnp(struct drm_device *dev, struct pll_lims *pll_lim, int clk,
- struct nouveau_pll_vals *pv)
-{
- int outclk;
-
- if (!pll_lim->vco2.maxfreq)
- outclk = getMNP_single(dev, pll_lim, clk, pv);
- else
- outclk = getMNP_double(dev, pll_lim, clk, pv);
-
- if (!outclk)
- NV_ERROR(dev, "Could not find a compatible set of PLL values\n");
-
- return outclk;
-}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-19 20:19:17 +0300