[PATCH 12/53] drm/radeon: add support for ASPM on CIK asics
Alex Deucher
alexdeucher at gmail.com
Mon Aug 12 09:43:04 PDT 2013
Enables PCIE ASPM (Active State Power Management) on
CIK asics.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/radeon/cik.c | 151 ++++++++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/radeon/cikd.h | 72 +++++++++++++++++++-
2 files changed, 222 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index a30fb32..0da9d67 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -62,6 +62,7 @@ extern void si_rlc_fini(struct radeon_device *rdev);
extern int si_rlc_init(struct radeon_device *rdev);
static void cik_rlc_stop(struct radeon_device *rdev);
static void cik_pcie_gen3_enable(struct radeon_device *rdev);
+static void cik_program_aspm(struct radeon_device *rdev);
/*
* Indirect registers accessor
@@ -5952,6 +5953,8 @@ static int cik_startup(struct radeon_device *rdev)
/* enable pcie gen2/3 link */
cik_pcie_gen3_enable(rdev);
+ /* enable aspm */
+ cik_program_aspm(rdev);
cik_mc_program(rdev);
@@ -7212,3 +7215,151 @@ static void cik_pcie_gen3_enable(struct radeon_device *rdev)
udelay(1);
}
}
+
+static void cik_program_aspm(struct radeon_device *rdev)
+{
+ u32 data, orig;
+ bool disable_l0s = false, disable_l1 = false, disable_plloff_in_l1 = false;
+ bool disable_clkreq = false;
+
+ if (radeon_aspm == 0)
+ return;
+
+ /* XXX double check IGPs */
+ if (rdev->flags & RADEON_IS_IGP)
+ return;
+
+ if (!(rdev->flags & RADEON_IS_PCIE))
+ return;
+
+ orig = data = RREG32_PCIE_PORT(PCIE_LC_N_FTS_CNTL);
+ data &= ~LC_XMIT_N_FTS_MASK;
+ data |= LC_XMIT_N_FTS(0x24) | LC_XMIT_N_FTS_OVERRIDE_EN;
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_LC_N_FTS_CNTL, data);
+
+ orig = data = RREG32_PCIE_PORT(PCIE_LC_CNTL3);
+ data |= LC_GO_TO_RECOVERY;
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_LC_CNTL3, data);
+
+ orig = data = RREG32_PCIE_PORT(PCIE_P_CNTL);
+ data |= P_IGNORE_EDB_ERR;
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_P_CNTL, data);
+
+ orig = data = RREG32_PCIE_PORT(PCIE_LC_CNTL);
+ data &= ~(LC_L0S_INACTIVITY_MASK | LC_L1_INACTIVITY_MASK);
+ data |= LC_PMI_TO_L1_DIS;
+ if (!disable_l0s)
+ data |= LC_L0S_INACTIVITY(7);
+
+ if (!disable_l1) {
+ data |= LC_L1_INACTIVITY(7);
+ data &= ~LC_PMI_TO_L1_DIS;
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_LC_CNTL, data);
+
+ if (!disable_plloff_in_l1) {
+ bool clk_req_support;
+
+ orig = data = RREG32_PCIE_PORT(PB0_PIF_PWRDOWN_0);
+ data &= ~(PLL_POWER_STATE_IN_OFF_0_MASK | PLL_POWER_STATE_IN_TXS2_0_MASK);
+ data |= PLL_POWER_STATE_IN_OFF_0(7) | PLL_POWER_STATE_IN_TXS2_0(7);
+ if (orig != data)
+ WREG32_PCIE_PORT(PB0_PIF_PWRDOWN_0, data);
+
+ orig = data = RREG32_PCIE_PORT(PB0_PIF_PWRDOWN_1);
+ data &= ~(PLL_POWER_STATE_IN_OFF_1_MASK | PLL_POWER_STATE_IN_TXS2_1_MASK);
+ data |= PLL_POWER_STATE_IN_OFF_1(7) | PLL_POWER_STATE_IN_TXS2_1(7);
+ if (orig != data)
+ WREG32_PCIE_PORT(PB0_PIF_PWRDOWN_1, data);
+
+ orig = data = RREG32_PCIE_PORT(PB1_PIF_PWRDOWN_0);
+ data &= ~(PLL_POWER_STATE_IN_OFF_0_MASK | PLL_POWER_STATE_IN_TXS2_0_MASK);
+ data |= PLL_POWER_STATE_IN_OFF_0(7) | PLL_POWER_STATE_IN_TXS2_0(7);
+ if (orig != data)
+ WREG32_PCIE_PORT(PB1_PIF_PWRDOWN_0, data);
+
+ orig = data = RREG32_PCIE_PORT(PB1_PIF_PWRDOWN_1);
+ data &= ~(PLL_POWER_STATE_IN_OFF_1_MASK | PLL_POWER_STATE_IN_TXS2_1_MASK);
+ data |= PLL_POWER_STATE_IN_OFF_1(7) | PLL_POWER_STATE_IN_TXS2_1(7);
+ if (orig != data)
+ WREG32_PCIE_PORT(PB1_PIF_PWRDOWN_1, data);
+
+ orig = data = RREG32_PCIE_PORT(PCIE_LC_LINK_WIDTH_CNTL);
+ data &= ~LC_DYN_LANES_PWR_STATE_MASK;
+ data |= LC_DYN_LANES_PWR_STATE(3);
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_LC_LINK_WIDTH_CNTL, data);
+
+ if (!disable_clkreq) {
+ struct pci_dev *root = rdev->pdev->bus->self;
+ u32 lnkcap;
+
+ clk_req_support = false;
+ pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap);
+ if (lnkcap & PCI_EXP_LNKCAP_CLKPM)
+ clk_req_support = true;
+ } else {
+ clk_req_support = false;
+ }
+
+ if (clk_req_support) {
+ orig = data = RREG32_PCIE_PORT(PCIE_LC_CNTL2);
+ data |= LC_ALLOW_PDWN_IN_L1 | LC_ALLOW_PDWN_IN_L23;
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_LC_CNTL2, data);
+
+ orig = data = RREG32_SMC(THM_CLK_CNTL);
+ data &= ~(CMON_CLK_SEL_MASK | TMON_CLK_SEL_MASK);
+ data |= CMON_CLK_SEL(1) | TMON_CLK_SEL(1);
+ if (orig != data)
+ WREG32_SMC(THM_CLK_CNTL, data);
+
+ orig = data = RREG32_SMC(MISC_CLK_CTRL);
+ data &= ~(DEEP_SLEEP_CLK_SEL_MASK | ZCLK_SEL_MASK);
+ data |= DEEP_SLEEP_CLK_SEL(1) | ZCLK_SEL(1);
+ if (orig != data)
+ WREG32_SMC(MISC_CLK_CTRL, data);
+
+ orig = data = RREG32_SMC(CG_CLKPIN_CNTL);
+ data &= ~BCLK_AS_XCLK;
+ if (orig != data)
+ WREG32_SMC(CG_CLKPIN_CNTL, data);
+
+ orig = data = RREG32_SMC(CG_CLKPIN_CNTL_2);
+ data &= ~FORCE_BIF_REFCLK_EN;
+ if (orig != data)
+ WREG32_SMC(CG_CLKPIN_CNTL_2, data);
+
+ orig = data = RREG32_SMC(MPLL_BYPASSCLK_SEL);
+ data &= ~MPLL_CLKOUT_SEL_MASK;
+ data |= MPLL_CLKOUT_SEL(4);
+ if (orig != data)
+ WREG32_SMC(MPLL_BYPASSCLK_SEL, data);
+ }
+ }
+ } else {
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_LC_CNTL, data);
+ }
+
+ orig = data = RREG32_PCIE_PORT(PCIE_CNTL2);
+ data |= SLV_MEM_LS_EN | MST_MEM_LS_EN | REPLAY_MEM_LS_EN;
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_CNTL2, data);
+
+ if (!disable_l0s) {
+ data = RREG32_PCIE_PORT(PCIE_LC_N_FTS_CNTL);
+ if((data & LC_N_FTS_MASK) == LC_N_FTS_MASK) {
+ data = RREG32_PCIE_PORT(PCIE_LC_STATUS1);
+ if ((data & LC_REVERSE_XMIT) && (data & LC_REVERSE_RCVR)) {
+ orig = data = RREG32_PCIE_PORT(PCIE_LC_CNTL);
+ data &= ~LC_L0S_INACTIVITY_MASK;
+ if (orig != data)
+ WREG32_PCIE_PORT(PCIE_LC_CNTL, data);
+ }
+ }
+ }
+}
diff --git a/drivers/gpu/drm/radeon/cikd.h b/drivers/gpu/drm/radeon/cikd.h
index a1f376e..d50593f 100644
--- a/drivers/gpu/drm/radeon/cikd.h
+++ b/drivers/gpu/drm/radeon/cikd.h
@@ -32,10 +32,53 @@
#define GENERAL_PWRMGT 0xC0200000
# define GPU_COUNTER_CLK (1 << 15)
+#define MPLL_BYPASSCLK_SEL 0xC050019C
+# define MPLL_CLKOUT_SEL(x) ((x) << 8)
+# define MPLL_CLKOUT_SEL_MASK 0xFF00
#define CG_CLKPIN_CNTL 0xC05001A0
# define XTALIN_DIVIDE (1 << 1)
+# define BCLK_AS_XCLK (1 << 2)
+#define CG_CLKPIN_CNTL_2 0xC05001A4
+# define FORCE_BIF_REFCLK_EN (1 << 3)
+# define MUX_TCLK_TO_XCLK (1 << 8)
+#define THM_CLK_CNTL 0xC05001A8
+# define CMON_CLK_SEL(x) ((x) << 0)
+# define CMON_CLK_SEL_MASK 0xFF
+# define TMON_CLK_SEL(x) ((x) << 8)
+# define TMON_CLK_SEL_MASK 0xFF00
+#define MISC_CLK_CTRL 0xC05001AC
+# define DEEP_SLEEP_CLK_SEL(x) ((x) << 0)
+# define DEEP_SLEEP_CLK_SEL_MASK 0xFF
+# define ZCLK_SEL(x) ((x) << 8)
+# define ZCLK_SEL_MASK 0xFF00
/* PCIE registers idx/data 0x38/0x3c */
+#define PB0_PIF_PWRDOWN_0 0x1100012 /* PCIE */
+# define PLL_POWER_STATE_IN_TXS2_0(x) ((x) << 7)
+# define PLL_POWER_STATE_IN_TXS2_0_MASK (0x7 << 7)
+# define PLL_POWER_STATE_IN_TXS2_0_SHIFT 7
+# define PLL_POWER_STATE_IN_OFF_0(x) ((x) << 10)
+# define PLL_POWER_STATE_IN_OFF_0_MASK (0x7 << 10)
+# define PLL_POWER_STATE_IN_OFF_0_SHIFT 10
+# define PLL_RAMP_UP_TIME_0(x) ((x) << 24)
+# define PLL_RAMP_UP_TIME_0_MASK (0x7 << 24)
+# define PLL_RAMP_UP_TIME_0_SHIFT 24
+#define PB0_PIF_PWRDOWN_1 0x1100013 /* PCIE */
+# define PLL_POWER_STATE_IN_TXS2_1(x) ((x) << 7)
+# define PLL_POWER_STATE_IN_TXS2_1_MASK (0x7 << 7)
+# define PLL_POWER_STATE_IN_TXS2_1_SHIFT 7
+# define PLL_POWER_STATE_IN_OFF_1(x) ((x) << 10)
+# define PLL_POWER_STATE_IN_OFF_1_MASK (0x7 << 10)
+# define PLL_POWER_STATE_IN_OFF_1_SHIFT 10
+# define PLL_RAMP_UP_TIME_1(x) ((x) << 24)
+# define PLL_RAMP_UP_TIME_1_MASK (0x7 << 24)
+# define PLL_RAMP_UP_TIME_1_SHIFT 24
+
+#define PCIE_CNTL2 0x1001001c /* PCIE */
+# define SLV_MEM_LS_EN (1 << 16)
+# define MST_MEM_LS_EN (1 << 18)
+# define REPLAY_MEM_LS_EN (1 << 19)
+
#define PCIE_LC_STATUS1 0x1400028 /* PCIE */
# define LC_REVERSE_RCVR (1 << 0)
# define LC_REVERSE_XMIT (1 << 1)
@@ -44,6 +87,22 @@
# define LC_DETECTED_LINK_WIDTH_MASK (0x7 << 5)
# define LC_DETECTED_LINK_WIDTH_SHIFT 5
+#define PCIE_P_CNTL 0x1400040 /* PCIE */
+# define P_IGNORE_EDB_ERR (1 << 6)
+
+#define PB1_PIF_PWRDOWN_0 0x2100012 /* PCIE */
+#define PB1_PIF_PWRDOWN_1 0x2100013 /* PCIE */
+
+#define PCIE_LC_CNTL 0x100100A0 /* PCIE */
+# define LC_L0S_INACTIVITY(x) ((x) << 8)
+# define LC_L0S_INACTIVITY_MASK (0xf << 8)
+# define LC_L0S_INACTIVITY_SHIFT 8
+# define LC_L1_INACTIVITY(x) ((x) << 12)
+# define LC_L1_INACTIVITY_MASK (0xf << 12)
+# define LC_L1_INACTIVITY_SHIFT 12
+# define LC_PMI_TO_L1_DIS (1 << 16)
+# define LC_ASPM_TO_L1_DIS (1 << 24)
+
#define PCIE_LC_LINK_WIDTH_CNTL 0x100100A2 /* PCIE */
# define LC_LINK_WIDTH_SHIFT 0
# define LC_LINK_WIDTH_MASK 0x7
@@ -65,7 +124,12 @@
# define LC_DYN_LANES_PWR_STATE(x) ((x) << 21)
# define LC_DYN_LANES_PWR_STATE_MASK (0x3 << 21)
# define LC_DYN_LANES_PWR_STATE_SHIFT 21
-
+#define PCIE_LC_N_FTS_CNTL 0x100100a3 /* PCIE */
+# define LC_XMIT_N_FTS(x) ((x) << 0)
+# define LC_XMIT_N_FTS_MASK (0xff << 0)
+# define LC_XMIT_N_FTS_SHIFT 0
+# define LC_XMIT_N_FTS_OVERRIDE_EN (1 << 8)
+# define LC_N_FTS_MASK (0xff << 24)
#define PCIE_LC_SPEED_CNTL 0x100100A4 /* PCIE */
# define LC_GEN2_EN_STRAP (1 << 0)
# define LC_GEN3_EN_STRAP (1 << 1)
@@ -87,6 +151,12 @@
# define LC_OTHER_SIDE_EVER_SENT_GEN3 (1 << 20)
# define LC_OTHER_SIDE_SUPPORTS_GEN3 (1 << 21)
+#define PCIE_LC_CNTL2 0x100100B1 /* PCIE */
+# define LC_ALLOW_PDWN_IN_L1 (1 << 17)
+# define LC_ALLOW_PDWN_IN_L23 (1 << 18)
+
+#define PCIE_LC_CNTL3 0x100100B5 /* PCIE */
+# define LC_GO_TO_RECOVERY (1 << 30)
#define PCIE_LC_CNTL4 0x100100B6 /* PCIE */
# define LC_REDO_EQ (1 << 5)
# define LC_SET_QUIESCE (1 << 13)
--
1.8.3.1
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