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      1 /*	$NetBSD: radeon_r600_dpm.c,v 1.2 2021/12/18 23:45:43 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2011 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Alex Deucher
     25  */
     26 
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: radeon_r600_dpm.c,v 1.2 2021/12/18 23:45:43 riastradh Exp $");
     29 
     30 #include "radeon.h"
     31 #include "radeon_asic.h"
     32 #include "r600d.h"
     33 #include "r600_dpm.h"
     34 #include "atom.h"
     35 
     36 const u32 r600_utc[R600_PM_NUMBER_OF_TC] =
     37 {
     38 	R600_UTC_DFLT_00,
     39 	R600_UTC_DFLT_01,
     40 	R600_UTC_DFLT_02,
     41 	R600_UTC_DFLT_03,
     42 	R600_UTC_DFLT_04,
     43 	R600_UTC_DFLT_05,
     44 	R600_UTC_DFLT_06,
     45 	R600_UTC_DFLT_07,
     46 	R600_UTC_DFLT_08,
     47 	R600_UTC_DFLT_09,
     48 	R600_UTC_DFLT_10,
     49 	R600_UTC_DFLT_11,
     50 	R600_UTC_DFLT_12,
     51 	R600_UTC_DFLT_13,
     52 	R600_UTC_DFLT_14,
     53 };
     54 
     55 const u32 r600_dtc[R600_PM_NUMBER_OF_TC] =
     56 {
     57 	R600_DTC_DFLT_00,
     58 	R600_DTC_DFLT_01,
     59 	R600_DTC_DFLT_02,
     60 	R600_DTC_DFLT_03,
     61 	R600_DTC_DFLT_04,
     62 	R600_DTC_DFLT_05,
     63 	R600_DTC_DFLT_06,
     64 	R600_DTC_DFLT_07,
     65 	R600_DTC_DFLT_08,
     66 	R600_DTC_DFLT_09,
     67 	R600_DTC_DFLT_10,
     68 	R600_DTC_DFLT_11,
     69 	R600_DTC_DFLT_12,
     70 	R600_DTC_DFLT_13,
     71 	R600_DTC_DFLT_14,
     72 };
     73 
     74 void r600_dpm_print_class_info(u32 class, u32 class2)
     75 {
     76 	const char *s;
     77 
     78 	switch (class & ATOM_PPLIB_CLASSIFICATION_UI_MASK) {
     79 	case ATOM_PPLIB_CLASSIFICATION_UI_NONE:
     80 	default:
     81 		s = "none";
     82 		break;
     83 	case ATOM_PPLIB_CLASSIFICATION_UI_BATTERY:
     84 		s = "battery";
     85 		break;
     86 	case ATOM_PPLIB_CLASSIFICATION_UI_BALANCED:
     87 		s = "balanced";
     88 		break;
     89 	case ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE:
     90 		s = "performance";
     91 		break;
     92 	}
     93 	printk("\tui class: %s\n", s);
     94 
     95 	printk("\tinternal class:");
     96 	if (((class & ~ATOM_PPLIB_CLASSIFICATION_UI_MASK) == 0) &&
     97 	    (class2 == 0))
     98 		pr_cont(" none");
     99 	else {
    100 		if (class & ATOM_PPLIB_CLASSIFICATION_BOOT)
    101 			pr_cont(" boot");
    102 		if (class & ATOM_PPLIB_CLASSIFICATION_THERMAL)
    103 			pr_cont(" thermal");
    104 		if (class & ATOM_PPLIB_CLASSIFICATION_LIMITEDPOWERSOURCE)
    105 			pr_cont(" limited_pwr");
    106 		if (class & ATOM_PPLIB_CLASSIFICATION_REST)
    107 			pr_cont(" rest");
    108 		if (class & ATOM_PPLIB_CLASSIFICATION_FORCED)
    109 			pr_cont(" forced");
    110 		if (class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE)
    111 			pr_cont(" 3d_perf");
    112 		if (class & ATOM_PPLIB_CLASSIFICATION_OVERDRIVETEMPLATE)
    113 			pr_cont(" ovrdrv");
    114 		if (class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE)
    115 			pr_cont(" uvd");
    116 		if (class & ATOM_PPLIB_CLASSIFICATION_3DLOW)
    117 			pr_cont(" 3d_low");
    118 		if (class & ATOM_PPLIB_CLASSIFICATION_ACPI)
    119 			pr_cont(" acpi");
    120 		if (class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
    121 			pr_cont(" uvd_hd2");
    122 		if (class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
    123 			pr_cont(" uvd_hd");
    124 		if (class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
    125 			pr_cont(" uvd_sd");
    126 		if (class2 & ATOM_PPLIB_CLASSIFICATION2_LIMITEDPOWERSOURCE_2)
    127 			pr_cont(" limited_pwr2");
    128 		if (class2 & ATOM_PPLIB_CLASSIFICATION2_ULV)
    129 			pr_cont(" ulv");
    130 		if (class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
    131 			pr_cont(" uvd_mvc");
    132 	}
    133 	pr_cont("\n");
    134 }
    135 
    136 void r600_dpm_print_cap_info(u32 caps)
    137 {
    138 	printk("\tcaps:");
    139 	if (caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY)
    140 		pr_cont(" single_disp");
    141 	if (caps & ATOM_PPLIB_SUPPORTS_VIDEO_PLAYBACK)
    142 		pr_cont(" video");
    143 	if (caps & ATOM_PPLIB_DISALLOW_ON_DC)
    144 		pr_cont(" no_dc");
    145 	pr_cont("\n");
    146 }
    147 
    148 void r600_dpm_print_ps_status(struct radeon_device *rdev,
    149 			      struct radeon_ps *rps)
    150 {
    151 	printk("\tstatus:");
    152 	if (rps == rdev->pm.dpm.current_ps)
    153 		pr_cont(" c");
    154 	if (rps == rdev->pm.dpm.requested_ps)
    155 		pr_cont(" r");
    156 	if (rps == rdev->pm.dpm.boot_ps)
    157 		pr_cont(" b");
    158 	pr_cont("\n");
    159 }
    160 
    161 u32 r600_dpm_get_vblank_time(struct radeon_device *rdev)
    162 {
    163 	struct drm_device *dev = rdev->ddev;
    164 	struct drm_crtc *crtc;
    165 	struct radeon_crtc *radeon_crtc;
    166 	u32 vblank_in_pixels;
    167 	u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
    168 
    169 	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
    170 		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
    171 			radeon_crtc = to_radeon_crtc(crtc);
    172 			if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
    173 				vblank_in_pixels =
    174 					radeon_crtc->hw_mode.crtc_htotal *
    175 					(radeon_crtc->hw_mode.crtc_vblank_end -
    176 					 radeon_crtc->hw_mode.crtc_vdisplay +
    177 					 (radeon_crtc->v_border * 2));
    178 
    179 				vblank_time_us = vblank_in_pixels * 1000 / radeon_crtc->hw_mode.clock;
    180 				break;
    181 			}
    182 		}
    183 	}
    184 
    185 	return vblank_time_us;
    186 }
    187 
    188 u32 r600_dpm_get_vrefresh(struct radeon_device *rdev)
    189 {
    190 	struct drm_device *dev = rdev->ddev;
    191 	struct drm_crtc *crtc;
    192 	struct radeon_crtc *radeon_crtc;
    193 	u32 vrefresh = 0;
    194 
    195 	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
    196 		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
    197 			radeon_crtc = to_radeon_crtc(crtc);
    198 			if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
    199 				vrefresh = drm_mode_vrefresh(&radeon_crtc->hw_mode);
    200 				break;
    201 			}
    202 		}
    203 	}
    204 	return vrefresh;
    205 }
    206 
    207 void r600_calculate_u_and_p(u32 i, u32 r_c, u32 p_b,
    208 			    u32 *p, u32 *u)
    209 {
    210 	u32 b_c = 0;
    211 	u32 i_c;
    212 	u32 tmp;
    213 
    214 	i_c = (i * r_c) / 100;
    215 	tmp = i_c >> p_b;
    216 
    217 	while (tmp) {
    218 		b_c++;
    219 		tmp >>= 1;
    220 	}
    221 
    222 	*u = (b_c + 1) / 2;
    223 	*p = i_c / (1 << (2 * (*u)));
    224 }
    225 
    226 int r600_calculate_at(u32 t, u32 h, u32 fh, u32 fl, u32 *tl, u32 *th)
    227 {
    228 	u32 k, a, ah, al;
    229 	u32 t1;
    230 
    231 	if ((fl == 0) || (fh == 0) || (fl > fh))
    232 		return -EINVAL;
    233 
    234 	k = (100 * fh) / fl;
    235 	t1 = (t * (k - 100));
    236 	a = (1000 * (100 * h + t1)) / (10000 + (t1 / 100));
    237 	a = (a + 5) / 10;
    238 	ah = ((a * t) + 5000) / 10000;
    239 	al = a - ah;
    240 
    241 	*th = t - ah;
    242 	*tl = t + al;
    243 
    244 	return 0;
    245 }
    246 
    247 void r600_gfx_clockgating_enable(struct radeon_device *rdev, bool enable)
    248 {
    249 	int i;
    250 
    251 	if (enable) {
    252 		WREG32_P(SCLK_PWRMGT_CNTL, DYN_GFX_CLK_OFF_EN, ~DYN_GFX_CLK_OFF_EN);
    253 	} else {
    254 		WREG32_P(SCLK_PWRMGT_CNTL, 0, ~DYN_GFX_CLK_OFF_EN);
    255 
    256 		WREG32(CG_RLC_REQ_AND_RSP, 0x2);
    257 
    258 		for (i = 0; i < rdev->usec_timeout; i++) {
    259 			if (((RREG32(CG_RLC_REQ_AND_RSP) & CG_RLC_RSP_TYPE_MASK) >> CG_RLC_RSP_TYPE_SHIFT) == 1)
    260 				break;
    261 			udelay(1);
    262 		}
    263 
    264 		WREG32(CG_RLC_REQ_AND_RSP, 0x0);
    265 
    266 		WREG32(GRBM_PWR_CNTL, 0x1);
    267 		RREG32(GRBM_PWR_CNTL);
    268 	}
    269 }
    270 
    271 void r600_dynamicpm_enable(struct radeon_device *rdev, bool enable)
    272 {
    273 	if (enable)
    274 		WREG32_P(GENERAL_PWRMGT, GLOBAL_PWRMGT_EN, ~GLOBAL_PWRMGT_EN);
    275 	else
    276 		WREG32_P(GENERAL_PWRMGT, 0, ~GLOBAL_PWRMGT_EN);
    277 }
    278 
    279 void r600_enable_thermal_protection(struct radeon_device *rdev, bool enable)
    280 {
    281 	if (enable)
    282 		WREG32_P(GENERAL_PWRMGT, 0, ~THERMAL_PROTECTION_DIS);
    283 	else
    284 		WREG32_P(GENERAL_PWRMGT, THERMAL_PROTECTION_DIS, ~THERMAL_PROTECTION_DIS);
    285 }
    286 
    287 void r600_enable_acpi_pm(struct radeon_device *rdev)
    288 {
    289 	WREG32_P(GENERAL_PWRMGT, STATIC_PM_EN, ~STATIC_PM_EN);
    290 }
    291 
    292 void r600_enable_dynamic_pcie_gen2(struct radeon_device *rdev, bool enable)
    293 {
    294 	if (enable)
    295 		WREG32_P(GENERAL_PWRMGT, ENABLE_GEN2PCIE, ~ENABLE_GEN2PCIE);
    296 	else
    297 		WREG32_P(GENERAL_PWRMGT, 0, ~ENABLE_GEN2PCIE);
    298 }
    299 
    300 bool r600_dynamicpm_enabled(struct radeon_device *rdev)
    301 {
    302 	if (RREG32(GENERAL_PWRMGT) & GLOBAL_PWRMGT_EN)
    303 		return true;
    304 	else
    305 		return false;
    306 }
    307 
    308 void r600_enable_sclk_control(struct radeon_device *rdev, bool enable)
    309 {
    310 	if (enable)
    311 		WREG32_P(SCLK_PWRMGT_CNTL, 0, ~SCLK_PWRMGT_OFF);
    312 	else
    313 		WREG32_P(SCLK_PWRMGT_CNTL, SCLK_PWRMGT_OFF, ~SCLK_PWRMGT_OFF);
    314 }
    315 
    316 void r600_enable_mclk_control(struct radeon_device *rdev, bool enable)
    317 {
    318 	if (enable)
    319 		WREG32_P(MCLK_PWRMGT_CNTL, 0, ~MPLL_PWRMGT_OFF);
    320 	else
    321 		WREG32_P(MCLK_PWRMGT_CNTL, MPLL_PWRMGT_OFF, ~MPLL_PWRMGT_OFF);
    322 }
    323 
    324 void r600_enable_spll_bypass(struct radeon_device *rdev, bool enable)
    325 {
    326 	if (enable)
    327 		WREG32_P(CG_SPLL_FUNC_CNTL, SPLL_BYPASS_EN, ~SPLL_BYPASS_EN);
    328 	else
    329 		WREG32_P(CG_SPLL_FUNC_CNTL, 0, ~SPLL_BYPASS_EN);
    330 }
    331 
    332 void r600_wait_for_spll_change(struct radeon_device *rdev)
    333 {
    334 	int i;
    335 
    336 	for (i = 0; i < rdev->usec_timeout; i++) {
    337 		if (RREG32(CG_SPLL_FUNC_CNTL) & SPLL_CHG_STATUS)
    338 			break;
    339 		udelay(1);
    340 	}
    341 }
    342 
    343 void r600_set_bsp(struct radeon_device *rdev, u32 u, u32 p)
    344 {
    345 	WREG32(CG_BSP, BSP(p) | BSU(u));
    346 }
    347 
    348 void r600_set_at(struct radeon_device *rdev,
    349 		 u32 l_to_m, u32 m_to_h,
    350 		 u32 h_to_m, u32 m_to_l)
    351 {
    352 	WREG32(CG_RT, FLS(l_to_m) | FMS(m_to_h));
    353 	WREG32(CG_LT, FHS(h_to_m) | FMS(m_to_l));
    354 }
    355 
    356 void r600_set_tc(struct radeon_device *rdev,
    357 		 u32 index, u32 u_t, u32 d_t)
    358 {
    359 	WREG32(CG_FFCT_0 + (index * 4), UTC_0(u_t) | DTC_0(d_t));
    360 }
    361 
    362 void r600_select_td(struct radeon_device *rdev,
    363 		    enum r600_td td)
    364 {
    365 	if (td == R600_TD_AUTO)
    366 		WREG32_P(SCLK_PWRMGT_CNTL, 0, ~FIR_FORCE_TREND_SEL);
    367 	else
    368 		WREG32_P(SCLK_PWRMGT_CNTL, FIR_FORCE_TREND_SEL, ~FIR_FORCE_TREND_SEL);
    369 	if (td == R600_TD_UP)
    370 		WREG32_P(SCLK_PWRMGT_CNTL, 0, ~FIR_TREND_MODE);
    371 	if (td == R600_TD_DOWN)
    372 		WREG32_P(SCLK_PWRMGT_CNTL, FIR_TREND_MODE, ~FIR_TREND_MODE);
    373 }
    374 
    375 void r600_set_vrc(struct radeon_device *rdev, u32 vrv)
    376 {
    377 	WREG32(CG_FTV, vrv);
    378 }
    379 
    380 void r600_set_tpu(struct radeon_device *rdev, u32 u)
    381 {
    382 	WREG32_P(CG_TPC, TPU(u), ~TPU_MASK);
    383 }
    384 
    385 void r600_set_tpc(struct radeon_device *rdev, u32 c)
    386 {
    387 	WREG32_P(CG_TPC, TPCC(c), ~TPCC_MASK);
    388 }
    389 
    390 void r600_set_sstu(struct radeon_device *rdev, u32 u)
    391 {
    392 	WREG32_P(CG_SSP, CG_SSTU(u), ~CG_SSTU_MASK);
    393 }
    394 
    395 void r600_set_sst(struct radeon_device *rdev, u32 t)
    396 {
    397 	WREG32_P(CG_SSP, CG_SST(t), ~CG_SST_MASK);
    398 }
    399 
    400 void r600_set_git(struct radeon_device *rdev, u32 t)
    401 {
    402 	WREG32_P(CG_GIT, CG_GICST(t), ~CG_GICST_MASK);
    403 }
    404 
    405 void r600_set_fctu(struct radeon_device *rdev, u32 u)
    406 {
    407 	WREG32_P(CG_FC_T, FC_TU(u), ~FC_TU_MASK);
    408 }
    409 
    410 void r600_set_fct(struct radeon_device *rdev, u32 t)
    411 {
    412 	WREG32_P(CG_FC_T, FC_T(t), ~FC_T_MASK);
    413 }
    414 
    415 void r600_set_ctxcgtt3d_rphc(struct radeon_device *rdev, u32 p)
    416 {
    417 	WREG32_P(CG_CTX_CGTT3D_R, PHC(p), ~PHC_MASK);
    418 }
    419 
    420 void r600_set_ctxcgtt3d_rsdc(struct radeon_device *rdev, u32 s)
    421 {
    422 	WREG32_P(CG_CTX_CGTT3D_R, SDC(s), ~SDC_MASK);
    423 }
    424 
    425 void r600_set_vddc3d_oorsu(struct radeon_device *rdev, u32 u)
    426 {
    427 	WREG32_P(CG_VDDC3D_OOR, SU(u), ~SU_MASK);
    428 }
    429 
    430 void r600_set_vddc3d_oorphc(struct radeon_device *rdev, u32 p)
    431 {
    432 	WREG32_P(CG_VDDC3D_OOR, PHC(p), ~PHC_MASK);
    433 }
    434 
    435 void r600_set_vddc3d_oorsdc(struct radeon_device *rdev, u32 s)
    436 {
    437 	WREG32_P(CG_VDDC3D_OOR, SDC(s), ~SDC_MASK);
    438 }
    439 
    440 void r600_set_mpll_lock_time(struct radeon_device *rdev, u32 lock_time)
    441 {
    442 	WREG32_P(MPLL_TIME, MPLL_LOCK_TIME(lock_time), ~MPLL_LOCK_TIME_MASK);
    443 }
    444 
    445 void r600_set_mpll_reset_time(struct radeon_device *rdev, u32 reset_time)
    446 {
    447 	WREG32_P(MPLL_TIME, MPLL_RESET_TIME(reset_time), ~MPLL_RESET_TIME_MASK);
    448 }
    449 
    450 void r600_engine_clock_entry_enable(struct radeon_device *rdev,
    451 				    u32 index, bool enable)
    452 {
    453 	if (enable)
    454 		WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART2 + (index * 4 * 2),
    455 			 STEP_0_SPLL_ENTRY_VALID, ~STEP_0_SPLL_ENTRY_VALID);
    456 	else
    457 		WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART2 + (index * 4 * 2),
    458 			 0, ~STEP_0_SPLL_ENTRY_VALID);
    459 }
    460 
    461 void r600_engine_clock_entry_enable_pulse_skipping(struct radeon_device *rdev,
    462 						   u32 index, bool enable)
    463 {
    464 	if (enable)
    465 		WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART2 + (index * 4 * 2),
    466 			 STEP_0_SPLL_STEP_ENABLE, ~STEP_0_SPLL_STEP_ENABLE);
    467 	else
    468 		WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART2 + (index * 4 * 2),
    469 			 0, ~STEP_0_SPLL_STEP_ENABLE);
    470 }
    471 
    472 void r600_engine_clock_entry_enable_post_divider(struct radeon_device *rdev,
    473 						 u32 index, bool enable)
    474 {
    475 	if (enable)
    476 		WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART2 + (index * 4 * 2),
    477 			 STEP_0_POST_DIV_EN, ~STEP_0_POST_DIV_EN);
    478 	else
    479 		WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART2 + (index * 4 * 2),
    480 			 0, ~STEP_0_POST_DIV_EN);
    481 }
    482 
    483 void r600_engine_clock_entry_set_post_divider(struct radeon_device *rdev,
    484 					      u32 index, u32 divider)
    485 {
    486 	WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART1 + (index * 4 * 2),
    487 		 STEP_0_SPLL_POST_DIV(divider), ~STEP_0_SPLL_POST_DIV_MASK);
    488 }
    489 
    490 void r600_engine_clock_entry_set_reference_divider(struct radeon_device *rdev,
    491 						   u32 index, u32 divider)
    492 {
    493 	WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART1 + (index * 4 * 2),
    494 		 STEP_0_SPLL_REF_DIV(divider), ~STEP_0_SPLL_REF_DIV_MASK);
    495 }
    496 
    497 void r600_engine_clock_entry_set_feedback_divider(struct radeon_device *rdev,
    498 						  u32 index, u32 divider)
    499 {
    500 	WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART1 + (index * 4 * 2),
    501 		 STEP_0_SPLL_FB_DIV(divider), ~STEP_0_SPLL_FB_DIV_MASK);
    502 }
    503 
    504 void r600_engine_clock_entry_set_step_time(struct radeon_device *rdev,
    505 					   u32 index, u32 step_time)
    506 {
    507 	WREG32_P(SCLK_FREQ_SETTING_STEP_0_PART1 + (index * 4 * 2),
    508 		 STEP_0_SPLL_STEP_TIME(step_time), ~STEP_0_SPLL_STEP_TIME_MASK);
    509 }
    510 
    511 void r600_vid_rt_set_ssu(struct radeon_device *rdev, u32 u)
    512 {
    513 	WREG32_P(VID_RT, SSTU(u), ~SSTU_MASK);
    514 }
    515 
    516 void r600_vid_rt_set_vru(struct radeon_device *rdev, u32 u)
    517 {
    518 	WREG32_P(VID_RT, VID_CRTU(u), ~VID_CRTU_MASK);
    519 }
    520 
    521 void r600_vid_rt_set_vrt(struct radeon_device *rdev, u32 rt)
    522 {
    523 	WREG32_P(VID_RT, VID_CRT(rt), ~VID_CRT_MASK);
    524 }
    525 
    526 void r600_voltage_control_enable_pins(struct radeon_device *rdev,
    527 				      u64 mask)
    528 {
    529 	WREG32(LOWER_GPIO_ENABLE, mask & 0xffffffff);
    530 	WREG32(UPPER_GPIO_ENABLE, upper_32_bits(mask));
    531 }
    532 
    533 
    534 void r600_voltage_control_program_voltages(struct radeon_device *rdev,
    535 					   enum r600_power_level index, u64 pins)
    536 {
    537 	u32 tmp, mask;
    538 	u32 ix = 3 - (3 & index);
    539 
    540 	WREG32(CTXSW_VID_LOWER_GPIO_CNTL + (ix * 4), pins & 0xffffffff);
    541 
    542 	mask = 7 << (3 * ix);
    543 	tmp = RREG32(VID_UPPER_GPIO_CNTL);
    544 	tmp = (tmp & ~mask) | ((pins >> (32 - (3 * ix))) & mask);
    545 	WREG32(VID_UPPER_GPIO_CNTL, tmp);
    546 }
    547 
    548 void r600_voltage_control_deactivate_static_control(struct radeon_device *rdev,
    549 						    u64 mask)
    550 {
    551 	u32 gpio;
    552 
    553 	gpio = RREG32(GPIOPAD_MASK);
    554 	gpio &= ~mask;
    555 	WREG32(GPIOPAD_MASK, gpio);
    556 
    557 	gpio = RREG32(GPIOPAD_EN);
    558 	gpio &= ~mask;
    559 	WREG32(GPIOPAD_EN, gpio);
    560 
    561 	gpio = RREG32(GPIOPAD_A);
    562 	gpio &= ~mask;
    563 	WREG32(GPIOPAD_A, gpio);
    564 }
    565 
    566 void r600_power_level_enable(struct radeon_device *rdev,
    567 			     enum r600_power_level index, bool enable)
    568 {
    569 	u32 ix = 3 - (3 & index);
    570 
    571 	if (enable)
    572 		WREG32_P(CTXSW_PROFILE_INDEX + (ix * 4), CTXSW_FREQ_STATE_ENABLE,
    573 			 ~CTXSW_FREQ_STATE_ENABLE);
    574 	else
    575 		WREG32_P(CTXSW_PROFILE_INDEX + (ix * 4), 0,
    576 			 ~CTXSW_FREQ_STATE_ENABLE);
    577 }
    578 
    579 void r600_power_level_set_voltage_index(struct radeon_device *rdev,
    580 					enum r600_power_level index, u32 voltage_index)
    581 {
    582 	u32 ix = 3 - (3 & index);
    583 
    584 	WREG32_P(CTXSW_PROFILE_INDEX + (ix * 4),
    585 		 CTXSW_FREQ_VIDS_CFG_INDEX(voltage_index), ~CTXSW_FREQ_VIDS_CFG_INDEX_MASK);
    586 }
    587 
    588 void r600_power_level_set_mem_clock_index(struct radeon_device *rdev,
    589 					  enum r600_power_level index, u32 mem_clock_index)
    590 {
    591 	u32 ix = 3 - (3 & index);
    592 
    593 	WREG32_P(CTXSW_PROFILE_INDEX + (ix * 4),
    594 		 CTXSW_FREQ_MCLK_CFG_INDEX(mem_clock_index), ~CTXSW_FREQ_MCLK_CFG_INDEX_MASK);
    595 }
    596 
    597 void r600_power_level_set_eng_clock_index(struct radeon_device *rdev,
    598 					  enum r600_power_level index, u32 eng_clock_index)
    599 {
    600 	u32 ix = 3 - (3 & index);
    601 
    602 	WREG32_P(CTXSW_PROFILE_INDEX + (ix * 4),
    603 		 CTXSW_FREQ_SCLK_CFG_INDEX(eng_clock_index), ~CTXSW_FREQ_SCLK_CFG_INDEX_MASK);
    604 }
    605 
    606 void r600_power_level_set_watermark_id(struct radeon_device *rdev,
    607 				       enum r600_power_level index,
    608 				       enum r600_display_watermark watermark_id)
    609 {
    610 	u32 ix = 3 - (3 & index);
    611 	u32 tmp = 0;
    612 
    613 	if (watermark_id == R600_DISPLAY_WATERMARK_HIGH)
    614 		tmp = CTXSW_FREQ_DISPLAY_WATERMARK;
    615 	WREG32_P(CTXSW_PROFILE_INDEX + (ix * 4), tmp, ~CTXSW_FREQ_DISPLAY_WATERMARK);
    616 }
    617 
    618 void r600_power_level_set_pcie_gen2(struct radeon_device *rdev,
    619 				    enum r600_power_level index, bool compatible)
    620 {
    621 	u32 ix = 3 - (3 & index);
    622 	u32 tmp = 0;
    623 
    624 	if (compatible)
    625 		tmp = CTXSW_FREQ_GEN2PCIE_VOLT;
    626 	WREG32_P(CTXSW_PROFILE_INDEX + (ix * 4), tmp, ~CTXSW_FREQ_GEN2PCIE_VOLT);
    627 }
    628 
    629 enum r600_power_level r600_power_level_get_current_index(struct radeon_device *rdev)
    630 {
    631 	u32 tmp;
    632 
    633 	tmp = RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & CURRENT_PROFILE_INDEX_MASK;
    634 	tmp >>= CURRENT_PROFILE_INDEX_SHIFT;
    635 	return tmp;
    636 }
    637 
    638 enum r600_power_level r600_power_level_get_target_index(struct radeon_device *rdev)
    639 {
    640 	u32 tmp;
    641 
    642 	tmp = RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & TARGET_PROFILE_INDEX_MASK;
    643 	tmp >>= TARGET_PROFILE_INDEX_SHIFT;
    644 	return tmp;
    645 }
    646 
    647 void r600_power_level_set_enter_index(struct radeon_device *rdev,
    648 				      enum r600_power_level index)
    649 {
    650 	WREG32_P(TARGET_AND_CURRENT_PROFILE_INDEX, DYN_PWR_ENTER_INDEX(index),
    651 		 ~DYN_PWR_ENTER_INDEX_MASK);
    652 }
    653 
    654 void r600_wait_for_power_level_unequal(struct radeon_device *rdev,
    655 				       enum r600_power_level index)
    656 {
    657 	int i;
    658 
    659 	for (i = 0; i < rdev->usec_timeout; i++) {
    660 		if (r600_power_level_get_target_index(rdev) != index)
    661 			break;
    662 		udelay(1);
    663 	}
    664 
    665 	for (i = 0; i < rdev->usec_timeout; i++) {
    666 		if (r600_power_level_get_current_index(rdev) != index)
    667 			break;
    668 		udelay(1);
    669 	}
    670 }
    671 
    672 void r600_wait_for_power_level(struct radeon_device *rdev,
    673 			       enum r600_power_level index)
    674 {
    675 	int i;
    676 
    677 	for (i = 0; i < rdev->usec_timeout; i++) {
    678 		if (r600_power_level_get_target_index(rdev) == index)
    679 			break;
    680 		udelay(1);
    681 	}
    682 
    683 	for (i = 0; i < rdev->usec_timeout; i++) {
    684 		if (r600_power_level_get_current_index(rdev) == index)
    685 			break;
    686 		udelay(1);
    687 	}
    688 }
    689 
    690 void r600_start_dpm(struct radeon_device *rdev)
    691 {
    692 	r600_enable_sclk_control(rdev, false);
    693 	r600_enable_mclk_control(rdev, false);
    694 
    695 	r600_dynamicpm_enable(rdev, true);
    696 
    697 	radeon_wait_for_vblank(rdev, 0);
    698 	radeon_wait_for_vblank(rdev, 1);
    699 
    700 	r600_enable_spll_bypass(rdev, true);
    701 	r600_wait_for_spll_change(rdev);
    702 	r600_enable_spll_bypass(rdev, false);
    703 	r600_wait_for_spll_change(rdev);
    704 
    705 	r600_enable_spll_bypass(rdev, true);
    706 	r600_wait_for_spll_change(rdev);
    707 	r600_enable_spll_bypass(rdev, false);
    708 	r600_wait_for_spll_change(rdev);
    709 
    710 	r600_enable_sclk_control(rdev, true);
    711 	r600_enable_mclk_control(rdev, true);
    712 }
    713 
    714 void r600_stop_dpm(struct radeon_device *rdev)
    715 {
    716 	r600_dynamicpm_enable(rdev, false);
    717 }
    718 
    719 int r600_dpm_pre_set_power_state(struct radeon_device *rdev)
    720 {
    721 	return 0;
    722 }
    723 
    724 void r600_dpm_post_set_power_state(struct radeon_device *rdev)
    725 {
    726 
    727 }
    728 
    729 bool r600_is_uvd_state(u32 class, u32 class2)
    730 {
    731 	if (class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE)
    732 		return true;
    733 	if (class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
    734 		return true;
    735 	if (class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
    736 		return true;
    737 	if (class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
    738 		return true;
    739 	if (class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
    740 		return true;
    741 	return false;
    742 }
    743 
    744 static int r600_set_thermal_temperature_range(struct radeon_device *rdev,
    745 					      int min_temp, int max_temp)
    746 {
    747 	int low_temp = 0 * 1000;
    748 	int high_temp = 255 * 1000;
    749 
    750 	if (low_temp < min_temp)
    751 		low_temp = min_temp;
    752 	if (high_temp > max_temp)
    753 		high_temp = max_temp;
    754 	if (high_temp < low_temp) {
    755 		DRM_ERROR("invalid thermal range: %d - %d\n", low_temp, high_temp);
    756 		return -EINVAL;
    757 	}
    758 
    759 	WREG32_P(CG_THERMAL_INT, DIG_THERM_INTH(high_temp / 1000), ~DIG_THERM_INTH_MASK);
    760 	WREG32_P(CG_THERMAL_INT, DIG_THERM_INTL(low_temp / 1000), ~DIG_THERM_INTL_MASK);
    761 	WREG32_P(CG_THERMAL_CTRL, DIG_THERM_DPM(high_temp / 1000), ~DIG_THERM_DPM_MASK);
    762 
    763 	rdev->pm.dpm.thermal.min_temp = low_temp;
    764 	rdev->pm.dpm.thermal.max_temp = high_temp;
    765 
    766 	return 0;
    767 }
    768 
    769 bool r600_is_internal_thermal_sensor(enum radeon_int_thermal_type sensor)
    770 {
    771 	switch (sensor) {
    772 	case THERMAL_TYPE_RV6XX:
    773 	case THERMAL_TYPE_RV770:
    774 	case THERMAL_TYPE_EVERGREEN:
    775 	case THERMAL_TYPE_SUMO:
    776 	case THERMAL_TYPE_NI:
    777 	case THERMAL_TYPE_SI:
    778 	case THERMAL_TYPE_CI:
    779 	case THERMAL_TYPE_KV:
    780 		return true;
    781 	case THERMAL_TYPE_ADT7473_WITH_INTERNAL:
    782 	case THERMAL_TYPE_EMC2103_WITH_INTERNAL:
    783 		return false; /* need special handling */
    784 	case THERMAL_TYPE_NONE:
    785 	case THERMAL_TYPE_EXTERNAL:
    786 	case THERMAL_TYPE_EXTERNAL_GPIO:
    787 	default:
    788 		return false;
    789 	}
    790 }
    791 
    792 int r600_dpm_late_enable(struct radeon_device *rdev)
    793 {
    794 	int ret;
    795 
    796 	if (rdev->irq.installed &&
    797 	    r600_is_internal_thermal_sensor(rdev->pm.int_thermal_type)) {
    798 		ret = r600_set_thermal_temperature_range(rdev, R600_TEMP_RANGE_MIN, R600_TEMP_RANGE_MAX);
    799 		if (ret)
    800 			return ret;
    801 		rdev->irq.dpm_thermal = true;
    802 		radeon_irq_set(rdev);
    803 	}
    804 
    805 	return 0;
    806 }
    807 
    808 union power_info {
    809 	struct _ATOM_POWERPLAY_INFO info;
    810 	struct _ATOM_POWERPLAY_INFO_V2 info_2;
    811 	struct _ATOM_POWERPLAY_INFO_V3 info_3;
    812 	struct _ATOM_PPLIB_POWERPLAYTABLE pplib;
    813 	struct _ATOM_PPLIB_POWERPLAYTABLE2 pplib2;
    814 	struct _ATOM_PPLIB_POWERPLAYTABLE3 pplib3;
    815 	struct _ATOM_PPLIB_POWERPLAYTABLE4 pplib4;
    816 	struct _ATOM_PPLIB_POWERPLAYTABLE5 pplib5;
    817 };
    818 
    819 union fan_info {
    820 	struct _ATOM_PPLIB_FANTABLE fan;
    821 	struct _ATOM_PPLIB_FANTABLE2 fan2;
    822 	struct _ATOM_PPLIB_FANTABLE3 fan3;
    823 };
    824 
    825 static int r600_parse_clk_voltage_dep_table(struct radeon_clock_voltage_dependency_table *radeon_table,
    826 					    ATOM_PPLIB_Clock_Voltage_Dependency_Table *atom_table)
    827 {
    828 	u32 size = atom_table->ucNumEntries *
    829 		sizeof(struct radeon_clock_voltage_dependency_entry);
    830 	int i;
    831 	ATOM_PPLIB_Clock_Voltage_Dependency_Record *entry;
    832 
    833 	radeon_table->entries = kzalloc(size, GFP_KERNEL);
    834 	if (!radeon_table->entries)
    835 		return -ENOMEM;
    836 
    837 	entry = &atom_table->entries[0];
    838 	for (i = 0; i < atom_table->ucNumEntries; i++) {
    839 		radeon_table->entries[i].clk = le16_to_cpu(entry->usClockLow) |
    840 			(entry->ucClockHigh << 16);
    841 		radeon_table->entries[i].v = le16_to_cpu(entry->usVoltage);
    842 		entry = (ATOM_PPLIB_Clock_Voltage_Dependency_Record *)
    843 			((u8 *)entry + sizeof(ATOM_PPLIB_Clock_Voltage_Dependency_Record));
    844 	}
    845 	radeon_table->count = atom_table->ucNumEntries;
    846 
    847 	return 0;
    848 }
    849 
    850 int r600_get_platform_caps(struct radeon_device *rdev)
    851 {
    852 	struct radeon_mode_info *mode_info = &rdev->mode_info;
    853 	union power_info *power_info;
    854 	int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
    855 	u16 data_offset;
    856 	u8 frev, crev;
    857 
    858 	if (!atom_parse_data_header(mode_info->atom_context, index, NULL,
    859 				   &frev, &crev, &data_offset))
    860 		return -EINVAL;
    861 	power_info = (union power_info *)(mode_info->atom_context->bios + data_offset);
    862 
    863 	rdev->pm.dpm.platform_caps = le32_to_cpu(power_info->pplib.ulPlatformCaps);
    864 	rdev->pm.dpm.backbias_response_time = le16_to_cpu(power_info->pplib.usBackbiasTime);
    865 	rdev->pm.dpm.voltage_response_time = le16_to_cpu(power_info->pplib.usVoltageTime);
    866 
    867 	return 0;
    868 }
    869 
    870 /* sizeof(ATOM_PPLIB_EXTENDEDHEADER) */
    871 #define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V2 12
    872 #define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V3 14
    873 #define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V4 16
    874 #define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V5 18
    875 #define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V6 20
    876 #define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V7 22
    877 
    878 int r600_parse_extended_power_table(struct radeon_device *rdev)
    879 {
    880 	struct radeon_mode_info *mode_info = &rdev->mode_info;
    881 	union power_info *power_info;
    882 	union fan_info *fan_info;
    883 	ATOM_PPLIB_Clock_Voltage_Dependency_Table *dep_table;
    884 	int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
    885 	u16 data_offset;
    886 	u8 frev, crev;
    887 	int ret, i;
    888 
    889 	if (!atom_parse_data_header(mode_info->atom_context, index, NULL,
    890 				   &frev, &crev, &data_offset))
    891 		return -EINVAL;
    892 	power_info = (union power_info *)(mode_info->atom_context->bios + data_offset);
    893 
    894 	/* fan table */
    895 	if (le16_to_cpu(power_info->pplib.usTableSize) >=
    896 	    sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE3)) {
    897 		if (power_info->pplib3.usFanTableOffset) {
    898 			fan_info = (union fan_info *)(mode_info->atom_context->bios + data_offset +
    899 						      le16_to_cpu(power_info->pplib3.usFanTableOffset));
    900 			rdev->pm.dpm.fan.t_hyst = fan_info->fan.ucTHyst;
    901 			rdev->pm.dpm.fan.t_min = le16_to_cpu(fan_info->fan.usTMin);
    902 			rdev->pm.dpm.fan.t_med = le16_to_cpu(fan_info->fan.usTMed);
    903 			rdev->pm.dpm.fan.t_high = le16_to_cpu(fan_info->fan.usTHigh);
    904 			rdev->pm.dpm.fan.pwm_min = le16_to_cpu(fan_info->fan.usPWMMin);
    905 			rdev->pm.dpm.fan.pwm_med = le16_to_cpu(fan_info->fan.usPWMMed);
    906 			rdev->pm.dpm.fan.pwm_high = le16_to_cpu(fan_info->fan.usPWMHigh);
    907 			if (fan_info->fan.ucFanTableFormat >= 2)
    908 				rdev->pm.dpm.fan.t_max = le16_to_cpu(fan_info->fan2.usTMax);
    909 			else
    910 				rdev->pm.dpm.fan.t_max = 10900;
    911 			rdev->pm.dpm.fan.cycle_delay = 100000;
    912 			if (fan_info->fan.ucFanTableFormat >= 3) {
    913 				rdev->pm.dpm.fan.control_mode = fan_info->fan3.ucFanControlMode;
    914 				rdev->pm.dpm.fan.default_max_fan_pwm =
    915 					le16_to_cpu(fan_info->fan3.usFanPWMMax);
    916 				rdev->pm.dpm.fan.default_fan_output_sensitivity = 4836;
    917 				rdev->pm.dpm.fan.fan_output_sensitivity =
    918 					le16_to_cpu(fan_info->fan3.usFanOutputSensitivity);
    919 			}
    920 			rdev->pm.dpm.fan.ucode_fan_control = true;
    921 		}
    922 	}
    923 
    924 	/* clock dependancy tables, shedding tables */
    925 	if (le16_to_cpu(power_info->pplib.usTableSize) >=
    926 	    sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE4)) {
    927 		if (power_info->pplib4.usVddcDependencyOnSCLKOffset) {
    928 			dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
    929 				(mode_info->atom_context->bios + data_offset +
    930 				 le16_to_cpu(power_info->pplib4.usVddcDependencyOnSCLKOffset));
    931 			ret = r600_parse_clk_voltage_dep_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
    932 							       dep_table);
    933 			if (ret)
    934 				return ret;
    935 		}
    936 		if (power_info->pplib4.usVddciDependencyOnMCLKOffset) {
    937 			dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
    938 				(mode_info->atom_context->bios + data_offset +
    939 				 le16_to_cpu(power_info->pplib4.usVddciDependencyOnMCLKOffset));
    940 			ret = r600_parse_clk_voltage_dep_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
    941 							       dep_table);
    942 			if (ret) {
    943 				kfree(rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries);
    944 				return ret;
    945 			}
    946 		}
    947 		if (power_info->pplib4.usVddcDependencyOnMCLKOffset) {
    948 			dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
    949 				(mode_info->atom_context->bios + data_offset +
    950 				 le16_to_cpu(power_info->pplib4.usVddcDependencyOnMCLKOffset));
    951 			ret = r600_parse_clk_voltage_dep_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
    952 							       dep_table);
    953 			if (ret) {
    954 				kfree(rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries);
    955 				kfree(rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk.entries);
    956 				return ret;
    957 			}
    958 		}
    959 		if (power_info->pplib4.usMvddDependencyOnMCLKOffset) {
    960 			dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
    961 				(mode_info->atom_context->bios + data_offset +
    962 				 le16_to_cpu(power_info->pplib4.usMvddDependencyOnMCLKOffset));
    963 			ret = r600_parse_clk_voltage_dep_table(&rdev->pm.dpm.dyn_state.mvdd_dependency_on_mclk,
    964 							       dep_table);
    965 			if (ret) {
    966 				kfree(rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries);
    967 				kfree(rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk.entries);
    968 				kfree(rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk.entries);
    969 				return ret;
    970 			}
    971 		}
    972 		if (power_info->pplib4.usMaxClockVoltageOnDCOffset) {
    973 			ATOM_PPLIB_Clock_Voltage_Limit_Table *clk_v =
    974 				(ATOM_PPLIB_Clock_Voltage_Limit_Table *)
    975 				(mode_info->atom_context->bios + data_offset +
    976 				 le16_to_cpu(power_info->pplib4.usMaxClockVoltageOnDCOffset));
    977 			if (clk_v->ucNumEntries) {
    978 				rdev->pm.dpm.dyn_state.max_clock_voltage_on_dc.sclk =
    979 					le16_to_cpu(clk_v->entries[0].usSclkLow) |
    980 					(clk_v->entries[0].ucSclkHigh << 16);
    981 				rdev->pm.dpm.dyn_state.max_clock_voltage_on_dc.mclk =
    982 					le16_to_cpu(clk_v->entries[0].usMclkLow) |
    983 					(clk_v->entries[0].ucMclkHigh << 16);
    984 				rdev->pm.dpm.dyn_state.max_clock_voltage_on_dc.vddc =
    985 					le16_to_cpu(clk_v->entries[0].usVddc);
    986 				rdev->pm.dpm.dyn_state.max_clock_voltage_on_dc.vddci =
    987 					le16_to_cpu(clk_v->entries[0].usVddci);
    988 			}
    989 		}
    990 		if (power_info->pplib4.usVddcPhaseShedLimitsTableOffset) {
    991 			ATOM_PPLIB_PhaseSheddingLimits_Table *psl =
    992 				(ATOM_PPLIB_PhaseSheddingLimits_Table *)
    993 				(mode_info->atom_context->bios + data_offset +
    994 				 le16_to_cpu(power_info->pplib4.usVddcPhaseShedLimitsTableOffset));
    995 			ATOM_PPLIB_PhaseSheddingLimits_Record *entry;
    996 
    997 			rdev->pm.dpm.dyn_state.phase_shedding_limits_table.entries =
    998 				kcalloc(psl->ucNumEntries,
    999 					sizeof(struct radeon_phase_shedding_limits_entry),
   1000 					GFP_KERNEL);
   1001 			if (!rdev->pm.dpm.dyn_state.phase_shedding_limits_table.entries) {
   1002 				r600_free_extended_power_table(rdev);
   1003 				return -ENOMEM;
   1004 			}
   1005 
   1006 			entry = &psl->entries[0];
   1007 			for (i = 0; i < psl->ucNumEntries; i++) {
   1008 				rdev->pm.dpm.dyn_state.phase_shedding_limits_table.entries[i].sclk =
   1009 					le16_to_cpu(entry->usSclkLow) | (entry->ucSclkHigh << 16);
   1010 				rdev->pm.dpm.dyn_state.phase_shedding_limits_table.entries[i].mclk =
   1011 					le16_to_cpu(entry->usMclkLow) | (entry->ucMclkHigh << 16);
   1012 				rdev->pm.dpm.dyn_state.phase_shedding_limits_table.entries[i].voltage =
   1013 					le16_to_cpu(entry->usVoltage);
   1014 				entry = (ATOM_PPLIB_PhaseSheddingLimits_Record *)
   1015 					((u8 *)entry + sizeof(ATOM_PPLIB_PhaseSheddingLimits_Record));
   1016 			}
   1017 			rdev->pm.dpm.dyn_state.phase_shedding_limits_table.count =
   1018 				psl->ucNumEntries;
   1019 		}
   1020 	}
   1021 
   1022 	/* cac data */
   1023 	if (le16_to_cpu(power_info->pplib.usTableSize) >=
   1024 	    sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE5)) {
   1025 		rdev->pm.dpm.tdp_limit = le32_to_cpu(power_info->pplib5.ulTDPLimit);
   1026 		rdev->pm.dpm.near_tdp_limit = le32_to_cpu(power_info->pplib5.ulNearTDPLimit);
   1027 		rdev->pm.dpm.near_tdp_limit_adjusted = rdev->pm.dpm.near_tdp_limit;
   1028 		rdev->pm.dpm.tdp_od_limit = le16_to_cpu(power_info->pplib5.usTDPODLimit);
   1029 		if (rdev->pm.dpm.tdp_od_limit)
   1030 			rdev->pm.dpm.power_control = true;
   1031 		else
   1032 			rdev->pm.dpm.power_control = false;
   1033 		rdev->pm.dpm.tdp_adjustment = 0;
   1034 		rdev->pm.dpm.sq_ramping_threshold = le32_to_cpu(power_info->pplib5.ulSQRampingThreshold);
   1035 		rdev->pm.dpm.cac_leakage = le32_to_cpu(power_info->pplib5.ulCACLeakage);
   1036 		rdev->pm.dpm.load_line_slope = le16_to_cpu(power_info->pplib5.usLoadLineSlope);
   1037 		if (power_info->pplib5.usCACLeakageTableOffset) {
   1038 			ATOM_PPLIB_CAC_Leakage_Table *cac_table =
   1039 				(ATOM_PPLIB_CAC_Leakage_Table *)
   1040 				(mode_info->atom_context->bios + data_offset +
   1041 				 le16_to_cpu(power_info->pplib5.usCACLeakageTableOffset));
   1042 			ATOM_PPLIB_CAC_Leakage_Record *entry;
   1043 			u32 size = cac_table->ucNumEntries * sizeof(struct radeon_cac_leakage_table);
   1044 			rdev->pm.dpm.dyn_state.cac_leakage_table.entries = kzalloc(size, GFP_KERNEL);
   1045 			if (!rdev->pm.dpm.dyn_state.cac_leakage_table.entries) {
   1046 				r600_free_extended_power_table(rdev);
   1047 				return -ENOMEM;
   1048 			}
   1049 			entry = &cac_table->entries[0];
   1050 			for (i = 0; i < cac_table->ucNumEntries; i++) {
   1051 				if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_EVV) {
   1052 					rdev->pm.dpm.dyn_state.cac_leakage_table.entries[i].vddc1 =
   1053 						le16_to_cpu(entry->usVddc1);
   1054 					rdev->pm.dpm.dyn_state.cac_leakage_table.entries[i].vddc2 =
   1055 						le16_to_cpu(entry->usVddc2);
   1056 					rdev->pm.dpm.dyn_state.cac_leakage_table.entries[i].vddc3 =
   1057 						le16_to_cpu(entry->usVddc3);
   1058 				} else {
   1059 					rdev->pm.dpm.dyn_state.cac_leakage_table.entries[i].vddc =
   1060 						le16_to_cpu(entry->usVddc);
   1061 					rdev->pm.dpm.dyn_state.cac_leakage_table.entries[i].leakage =
   1062 						le32_to_cpu(entry->ulLeakageValue);
   1063 				}
   1064 				entry = (ATOM_PPLIB_CAC_Leakage_Record *)
   1065 					((u8 *)entry + sizeof(ATOM_PPLIB_CAC_Leakage_Record));
   1066 			}
   1067 			rdev->pm.dpm.dyn_state.cac_leakage_table.count = cac_table->ucNumEntries;
   1068 		}
   1069 	}
   1070 
   1071 	/* ext tables */
   1072 	if (le16_to_cpu(power_info->pplib.usTableSize) >=
   1073 	    sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE3)) {
   1074 		ATOM_PPLIB_EXTENDEDHEADER *ext_hdr = (ATOM_PPLIB_EXTENDEDHEADER *)
   1075 			(mode_info->atom_context->bios + data_offset +
   1076 			 le16_to_cpu(power_info->pplib3.usExtendendedHeaderOffset));
   1077 		if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V2) &&
   1078 			ext_hdr->usVCETableOffset) {
   1079 			VCEClockInfoArray *array = (VCEClockInfoArray *)
   1080 				(mode_info->atom_context->bios + data_offset +
   1081 				 le16_to_cpu(ext_hdr->usVCETableOffset) + 1);
   1082 			ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table *limits =
   1083 				(ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table *)
   1084 				(mode_info->atom_context->bios + data_offset +
   1085 				 le16_to_cpu(ext_hdr->usVCETableOffset) + 1 +
   1086 				 1 + array->ucNumEntries * sizeof(VCEClockInfo));
   1087 			ATOM_PPLIB_VCE_State_Table *states =
   1088 				(ATOM_PPLIB_VCE_State_Table *)
   1089 				(mode_info->atom_context->bios + data_offset +
   1090 				 le16_to_cpu(ext_hdr->usVCETableOffset) + 1 +
   1091 				 1 + (array->ucNumEntries * sizeof (VCEClockInfo)) +
   1092 				 1 + (limits->numEntries * sizeof(ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record)));
   1093 			ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record *entry;
   1094 			ATOM_PPLIB_VCE_State_Record *state_entry;
   1095 			VCEClockInfo *vce_clk;
   1096 			u32 size = limits->numEntries *
   1097 				sizeof(struct radeon_vce_clock_voltage_dependency_entry);
   1098 			rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries =
   1099 				kzalloc(size, GFP_KERNEL);
   1100 			if (!rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries) {
   1101 				r600_free_extended_power_table(rdev);
   1102 				return -ENOMEM;
   1103 			}
   1104 			rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.count =
   1105 				limits->numEntries;
   1106 			entry = &limits->entries[0];
   1107 			state_entry = &states->entries[0];
   1108 			for (i = 0; i < limits->numEntries; i++) {
   1109 				vce_clk = (VCEClockInfo *)
   1110 					((u8 *)&array->entries[0] +
   1111 					 (entry->ucVCEClockInfoIndex * sizeof(VCEClockInfo)));
   1112 				rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].evclk =
   1113 					le16_to_cpu(vce_clk->usEVClkLow) | (vce_clk->ucEVClkHigh << 16);
   1114 				rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].ecclk =
   1115 					le16_to_cpu(vce_clk->usECClkLow) | (vce_clk->ucECClkHigh << 16);
   1116 				rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].v =
   1117 					le16_to_cpu(entry->usVoltage);
   1118 				entry = (ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record *)
   1119 					((u8 *)entry + sizeof(ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record));
   1120 			}
   1121 			for (i = 0; i < states->numEntries; i++) {
   1122 				if (i >= RADEON_MAX_VCE_LEVELS)
   1123 					break;
   1124 				vce_clk = (VCEClockInfo *)
   1125 					((u8 *)&array->entries[0] +
   1126 					 (state_entry->ucVCEClockInfoIndex * sizeof(VCEClockInfo)));
   1127 				rdev->pm.dpm.vce_states[i].evclk =
   1128 					le16_to_cpu(vce_clk->usEVClkLow) | (vce_clk->ucEVClkHigh << 16);
   1129 				rdev->pm.dpm.vce_states[i].ecclk =
   1130 					le16_to_cpu(vce_clk->usECClkLow) | (vce_clk->ucECClkHigh << 16);
   1131 				rdev->pm.dpm.vce_states[i].clk_idx =
   1132 					state_entry->ucClockInfoIndex & 0x3f;
   1133 				rdev->pm.dpm.vce_states[i].pstate =
   1134 					(state_entry->ucClockInfoIndex & 0xc0) >> 6;
   1135 				state_entry = (ATOM_PPLIB_VCE_State_Record *)
   1136 					((u8 *)state_entry + sizeof(ATOM_PPLIB_VCE_State_Record));
   1137 			}
   1138 		}
   1139 		if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V3) &&
   1140 			ext_hdr->usUVDTableOffset) {
   1141 			UVDClockInfoArray *array = (UVDClockInfoArray *)
   1142 				(mode_info->atom_context->bios + data_offset +
   1143 				 le16_to_cpu(ext_hdr->usUVDTableOffset) + 1);
   1144 			ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table *limits =
   1145 				(ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table *)
   1146 				(mode_info->atom_context->bios + data_offset +
   1147 				 le16_to_cpu(ext_hdr->usUVDTableOffset) + 1 +
   1148 				 1 + (array->ucNumEntries * sizeof (UVDClockInfo)));
   1149 			ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record *entry;
   1150 			u32 size = limits->numEntries *
   1151 				sizeof(struct radeon_uvd_clock_voltage_dependency_entry);
   1152 			rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries =
   1153 				kzalloc(size, GFP_KERNEL);
   1154 			if (!rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries) {
   1155 				r600_free_extended_power_table(rdev);
   1156 				return -ENOMEM;
   1157 			}
   1158 			rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.count =
   1159 				limits->numEntries;
   1160 			entry = &limits->entries[0];
   1161 			for (i = 0; i < limits->numEntries; i++) {
   1162 				UVDClockInfo *uvd_clk = (UVDClockInfo *)
   1163 					((u8 *)&array->entries[0] +
   1164 					 (entry->ucUVDClockInfoIndex * sizeof(UVDClockInfo)));
   1165 				rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries[i].vclk =
   1166 					le16_to_cpu(uvd_clk->usVClkLow) | (uvd_clk->ucVClkHigh << 16);
   1167 				rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries[i].dclk =
   1168 					le16_to_cpu(uvd_clk->usDClkLow) | (uvd_clk->ucDClkHigh << 16);
   1169 				rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries[i].v =
   1170 					le16_to_cpu(entry->usVoltage);
   1171 				entry = (ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record *)
   1172 					((u8 *)entry + sizeof(ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record));
   1173 			}
   1174 		}
   1175 		if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V4) &&
   1176 			ext_hdr->usSAMUTableOffset) {
   1177 			ATOM_PPLIB_SAMClk_Voltage_Limit_Table *limits =
   1178 				(ATOM_PPLIB_SAMClk_Voltage_Limit_Table *)
   1179 				(mode_info->atom_context->bios + data_offset +
   1180 				 le16_to_cpu(ext_hdr->usSAMUTableOffset) + 1);
   1181 			ATOM_PPLIB_SAMClk_Voltage_Limit_Record *entry;
   1182 			u32 size = limits->numEntries *
   1183 				sizeof(struct radeon_clock_voltage_dependency_entry);
   1184 			rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries =
   1185 				kzalloc(size, GFP_KERNEL);
   1186 			if (!rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries) {
   1187 				r600_free_extended_power_table(rdev);
   1188 				return -ENOMEM;
   1189 			}
   1190 			rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.count =
   1191 				limits->numEntries;
   1192 			entry = &limits->entries[0];
   1193 			for (i = 0; i < limits->numEntries; i++) {
   1194 				rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries[i].clk =
   1195 					le16_to_cpu(entry->usSAMClockLow) | (entry->ucSAMClockHigh << 16);
   1196 				rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries[i].v =
   1197 					le16_to_cpu(entry->usVoltage);
   1198 				entry = (ATOM_PPLIB_SAMClk_Voltage_Limit_Record *)
   1199 					((u8 *)entry + sizeof(ATOM_PPLIB_SAMClk_Voltage_Limit_Record));
   1200 			}
   1201 		}
   1202 		if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V5) &&
   1203 		    ext_hdr->usPPMTableOffset) {
   1204 			ATOM_PPLIB_PPM_Table *ppm = (ATOM_PPLIB_PPM_Table *)
   1205 				(mode_info->atom_context->bios + data_offset +
   1206 				 le16_to_cpu(ext_hdr->usPPMTableOffset));
   1207 			rdev->pm.dpm.dyn_state.ppm_table =
   1208 				kzalloc(sizeof(struct radeon_ppm_table), GFP_KERNEL);
   1209 			if (!rdev->pm.dpm.dyn_state.ppm_table) {
   1210 				r600_free_extended_power_table(rdev);
   1211 				return -ENOMEM;
   1212 			}
   1213 			rdev->pm.dpm.dyn_state.ppm_table->ppm_design = ppm->ucPpmDesign;
   1214 			rdev->pm.dpm.dyn_state.ppm_table->cpu_core_number =
   1215 				le16_to_cpu(ppm->usCpuCoreNumber);
   1216 			rdev->pm.dpm.dyn_state.ppm_table->platform_tdp =
   1217 				le32_to_cpu(ppm->ulPlatformTDP);
   1218 			rdev->pm.dpm.dyn_state.ppm_table->small_ac_platform_tdp =
   1219 				le32_to_cpu(ppm->ulSmallACPlatformTDP);
   1220 			rdev->pm.dpm.dyn_state.ppm_table->platform_tdc =
   1221 				le32_to_cpu(ppm->ulPlatformTDC);
   1222 			rdev->pm.dpm.dyn_state.ppm_table->small_ac_platform_tdc =
   1223 				le32_to_cpu(ppm->ulSmallACPlatformTDC);
   1224 			rdev->pm.dpm.dyn_state.ppm_table->apu_tdp =
   1225 				le32_to_cpu(ppm->ulApuTDP);
   1226 			rdev->pm.dpm.dyn_state.ppm_table->dgpu_tdp =
   1227 				le32_to_cpu(ppm->ulDGpuTDP);
   1228 			rdev->pm.dpm.dyn_state.ppm_table->dgpu_ulv_power =
   1229 				le32_to_cpu(ppm->ulDGpuUlvPower);
   1230 			rdev->pm.dpm.dyn_state.ppm_table->tj_max =
   1231 				le32_to_cpu(ppm->ulTjmax);
   1232 		}
   1233 		if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V6) &&
   1234 			ext_hdr->usACPTableOffset) {
   1235 			ATOM_PPLIB_ACPClk_Voltage_Limit_Table *limits =
   1236 				(ATOM_PPLIB_ACPClk_Voltage_Limit_Table *)
   1237 				(mode_info->atom_context->bios + data_offset +
   1238 				 le16_to_cpu(ext_hdr->usACPTableOffset) + 1);
   1239 			ATOM_PPLIB_ACPClk_Voltage_Limit_Record *entry;
   1240 			u32 size = limits->numEntries *
   1241 				sizeof(struct radeon_clock_voltage_dependency_entry);
   1242 			rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries =
   1243 				kzalloc(size, GFP_KERNEL);
   1244 			if (!rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries) {
   1245 				r600_free_extended_power_table(rdev);
   1246 				return -ENOMEM;
   1247 			}
   1248 			rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.count =
   1249 				limits->numEntries;
   1250 			entry = &limits->entries[0];
   1251 			for (i = 0; i < limits->numEntries; i++) {
   1252 				rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries[i].clk =
   1253 					le16_to_cpu(entry->usACPClockLow) | (entry->ucACPClockHigh << 16);
   1254 				rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries[i].v =
   1255 					le16_to_cpu(entry->usVoltage);
   1256 				entry = (ATOM_PPLIB_ACPClk_Voltage_Limit_Record *)
   1257 					((u8 *)entry + sizeof(ATOM_PPLIB_ACPClk_Voltage_Limit_Record));
   1258 			}
   1259 		}
   1260 		if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V7) &&
   1261 			ext_hdr->usPowerTuneTableOffset) {
   1262 			u8 rev = *(u8 *)(mode_info->atom_context->bios + data_offset +
   1263 					 le16_to_cpu(ext_hdr->usPowerTuneTableOffset));
   1264 			ATOM_PowerTune_Table *pt;
   1265 			rdev->pm.dpm.dyn_state.cac_tdp_table =
   1266 				kzalloc(sizeof(struct radeon_cac_tdp_table), GFP_KERNEL);
   1267 			if (!rdev->pm.dpm.dyn_state.cac_tdp_table) {
   1268 				r600_free_extended_power_table(rdev);
   1269 				return -ENOMEM;
   1270 			}
   1271 			if (rev > 0) {
   1272 				ATOM_PPLIB_POWERTUNE_Table_V1 *ppt = (ATOM_PPLIB_POWERTUNE_Table_V1 *)
   1273 					(mode_info->atom_context->bios + data_offset +
   1274 					 le16_to_cpu(ext_hdr->usPowerTuneTableOffset));
   1275 				rdev->pm.dpm.dyn_state.cac_tdp_table->maximum_power_delivery_limit =
   1276 					le16_to_cpu(ppt->usMaximumPowerDeliveryLimit);
   1277 				pt = &ppt->power_tune_table;
   1278 			} else {
   1279 				ATOM_PPLIB_POWERTUNE_Table *ppt = (ATOM_PPLIB_POWERTUNE_Table *)
   1280 					(mode_info->atom_context->bios + data_offset +
   1281 					 le16_to_cpu(ext_hdr->usPowerTuneTableOffset));
   1282 				rdev->pm.dpm.dyn_state.cac_tdp_table->maximum_power_delivery_limit = 255;
   1283 				pt = &ppt->power_tune_table;
   1284 			}
   1285 			rdev->pm.dpm.dyn_state.cac_tdp_table->tdp = le16_to_cpu(pt->usTDP);
   1286 			rdev->pm.dpm.dyn_state.cac_tdp_table->configurable_tdp =
   1287 				le16_to_cpu(pt->usConfigurableTDP);
   1288 			rdev->pm.dpm.dyn_state.cac_tdp_table->tdc = le16_to_cpu(pt->usTDC);
   1289 			rdev->pm.dpm.dyn_state.cac_tdp_table->battery_power_limit =
   1290 				le16_to_cpu(pt->usBatteryPowerLimit);
   1291 			rdev->pm.dpm.dyn_state.cac_tdp_table->small_power_limit =
   1292 				le16_to_cpu(pt->usSmallPowerLimit);
   1293 			rdev->pm.dpm.dyn_state.cac_tdp_table->low_cac_leakage =
   1294 				le16_to_cpu(pt->usLowCACLeakage);
   1295 			rdev->pm.dpm.dyn_state.cac_tdp_table->high_cac_leakage =
   1296 				le16_to_cpu(pt->usHighCACLeakage);
   1297 		}
   1298 	}
   1299 
   1300 	return 0;
   1301 }
   1302 
   1303 void r600_free_extended_power_table(struct radeon_device *rdev)
   1304 {
   1305 	struct radeon_dpm_dynamic_state *dyn_state = &rdev->pm.dpm.dyn_state;
   1306 
   1307 	kfree(dyn_state->vddc_dependency_on_sclk.entries);
   1308 	kfree(dyn_state->vddci_dependency_on_mclk.entries);
   1309 	kfree(dyn_state->vddc_dependency_on_mclk.entries);
   1310 	kfree(dyn_state->mvdd_dependency_on_mclk.entries);
   1311 	kfree(dyn_state->cac_leakage_table.entries);
   1312 	kfree(dyn_state->phase_shedding_limits_table.entries);
   1313 	kfree(dyn_state->ppm_table);
   1314 	kfree(dyn_state->cac_tdp_table);
   1315 	kfree(dyn_state->vce_clock_voltage_dependency_table.entries);
   1316 	kfree(dyn_state->uvd_clock_voltage_dependency_table.entries);
   1317 	kfree(dyn_state->samu_clock_voltage_dependency_table.entries);
   1318 	kfree(dyn_state->acp_clock_voltage_dependency_table.entries);
   1319 }
   1320 
   1321 enum radeon_pcie_gen r600_get_pcie_gen_support(struct radeon_device *rdev,
   1322 					       u32 sys_mask,
   1323 					       enum radeon_pcie_gen asic_gen,
   1324 					       enum radeon_pcie_gen default_gen)
   1325 {
   1326 	switch (asic_gen) {
   1327 	case RADEON_PCIE_GEN1:
   1328 		return RADEON_PCIE_GEN1;
   1329 	case RADEON_PCIE_GEN2:
   1330 		return RADEON_PCIE_GEN2;
   1331 	case RADEON_PCIE_GEN3:
   1332 		return RADEON_PCIE_GEN3;
   1333 	default:
   1334 		if ((sys_mask & RADEON_PCIE_SPEED_80) && (default_gen == RADEON_PCIE_GEN3))
   1335 			return RADEON_PCIE_GEN3;
   1336 		else if ((sys_mask & RADEON_PCIE_SPEED_50) && (default_gen == RADEON_PCIE_GEN2))
   1337 			return RADEON_PCIE_GEN2;
   1338 		else
   1339 			return RADEON_PCIE_GEN1;
   1340 	}
   1341 	return RADEON_PCIE_GEN1;
   1342 }
   1343 
   1344 u16 r600_get_pcie_lane_support(struct radeon_device *rdev,
   1345 			       u16 asic_lanes,
   1346 			       u16 default_lanes)
   1347 {
   1348 	switch (asic_lanes) {
   1349 	case 0:
   1350 	default:
   1351 		return default_lanes;
   1352 	case 1:
   1353 		return 1;
   1354 	case 2:
   1355 		return 2;
   1356 	case 4:
   1357 		return 4;
   1358 	case 8:
   1359 		return 8;
   1360 	case 12:
   1361 		return 12;
   1362 	case 16:
   1363 		return 16;
   1364 	}
   1365 }
   1366 
   1367 u8 r600_encode_pci_lane_width(u32 lanes)
   1368 {
   1369 	u8 encoded_lanes[] = { 0, 1, 2, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0, 6 };
   1370 
   1371 	if (lanes > 16)
   1372 		return 0;
   1373 
   1374 	return encoded_lanes[lanes];
   1375 }
   1376