[Intel-gfx] [PATCH 01/28] drm/i915: Add modular FIA
Ville Syrjälä
ville.syrjala at linux.intel.com
Wed Jun 26 15:50:14 UTC 2019
On Tue, Jun 25, 2019 at 10:54:10AM -0700, Lucas De Marchi wrote:
> From: Anusha Srivatsa <anusha.srivatsa at intel.com>
>
> Some platforms may have Modular FIA. If Modular FIA is used in the SOC,
> then Display Driver will access the additional instances of
> FIA based on pre-assigned offset in GTTMADDR space.
>
> Each Modular FIA instance has its own IOSF Sideband Port ID
> and it houses only 2 Type-C Port. In SOC that has more than
> two Type-C Ports, there are multiple instances of Modular FIA.
> Gunit will need to use different destination ID when it access
> different pair of Type-C Port.
>
> The DFLEXDPSP register has Modular FIA bit. If Modular FIA is
> used in the SOC, this register bit exists in all the instances of
> Modular FIA. IOM FW is required to program only the MF bit in
> first FIA instance that houses the Type-C Port 0 and Port 1, for
> Display Driver to read from.
>
> Cc: Jani Nikula <jani.nikula at intel.com>
> Signed-off-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_ddi.c | 9 ++++---
> drivers/gpu/drm/i915/display/intel_display.c | 27 ++++++++++++++++++++
> drivers/gpu/drm/i915/display/intel_display.h | 6 +++++
> drivers/gpu/drm/i915/display/intel_dp.c | 25 ++++++++++++------
> drivers/gpu/drm/i915/i915_reg.h | 13 +++++++---
> drivers/gpu/drm/i915/intel_device_info.h | 1 +
> drivers/gpu/drm/i915/intel_drv.h | 2 ++
> 7 files changed, 68 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 7925a176f900..b717562fcce5 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -2997,6 +2997,7 @@ static void icl_program_mg_dp_mode(struct intel_digital_port *intel_dig_port)
> enum port port = intel_dig_port->base.port;
> enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
> u32 ln0, ln1, lane_info;
> + enum display_fia fia;
Can we stick this into the new enum phy namespace we're going to need
anyway for ehl?
>
> if (tc_port == PORT_TC_NONE || intel_dig_port->tc_type == TC_PORT_TBT)
> return;
> @@ -3009,7 +3010,8 @@ static void icl_program_mg_dp_mode(struct intel_digital_port *intel_dig_port)
> ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
> ln1 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE);
>
> - lane_info = (I915_READ(PORT_TX_DFLEXDPSP) &
> + fia = intel_tc_port_to_fia(dev_priv, tc_port);
> + lane_info = (I915_READ(PORT_TX_DFLEXDPSP(fia)) &
> DP_LANE_ASSIGNMENT_MASK(tc_port)) >>
> DP_LANE_ASSIGNMENT_SHIFT(tc_port);
>
> @@ -3598,7 +3600,8 @@ static void intel_ddi_set_fia_lane_count(struct intel_encoder *encoder,
> struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
> enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
> - u32 val = I915_READ(PORT_TX_DFLEXDPMLE1);
> + enum display_fia fia = intel_tc_port_to_fia(dev_priv, tc_port);
> + u32 val = I915_READ(PORT_TX_DFLEXDPMLE1(fia));
> bool lane_reversal = dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
>
> val &= ~DFLEXDPMLE1_DPMLETC_MASK(tc_port);
> @@ -3617,7 +3620,7 @@ static void intel_ddi_set_fia_lane_count(struct intel_encoder *encoder,
> default:
> MISSING_CASE(pipe_config->lane_count);
> }
> - I915_WRITE(PORT_TX_DFLEXDPMLE1, val);
> + I915_WRITE(PORT_TX_DFLEXDPMLE1(fia), val);
> }
>
> static void
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 8592a7d422de..6217b5bcea2a 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -6590,6 +6590,33 @@ enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
> return port - PORT_C;
> }
>
> +static bool intel_has_modular_fia(struct drm_i915_private *dev_priv)
> +{
> + if (!INTEL_INFO(dev_priv)->display.has_modular_fia)
> + return false;
> +
> + return I915_READ(PORT_TX_DFLEXDPSP(FIA_1)) & MODULAR_FIA_MASK;
> +}
> +
> +enum display_fia intel_tc_port_to_fia(struct drm_i915_private *dev_priv,
> + enum tc_port tc_port)
> +{
> + if (!intel_has_modular_fia(dev_priv))
> + return FIA_1;
> +
> + switch (tc_port) {
> + case PORT_TC1:
> + case PORT_TC2:
> + return FIA_1;
> + case PORT_TC3:
> + case PORT_TC4:
> + return FIA_2;
> + default:
> + WARN_ON(tc_port);
> + return FIA_1;
> + }
> +}
> +
> enum intel_display_power_domain intel_port_to_power_domain(enum port port)
> {
> switch (port) {
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
> index ee6b8194a459..12ded01ed5d3 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -196,6 +196,12 @@ enum tc_port_type {
> TC_PORT_LEGACY,
> };
>
> +enum display_fia {
> + FIA_1 = 0,
> + FIA_2,
> + FIA_3,
> +};
> +
> enum dpio_channel {
> DPIO_CH0,
> DPIO_CH1
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 4336df46fe78..5ed6e49fef33 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -218,13 +218,15 @@ static int intel_dp_get_fia_supported_lane_count(struct intel_dp *intel_dp)
> enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
> intel_wakeref_t wakeref;
> u32 lane_info;
> + enum display_fia fia;
>
> if (tc_port == PORT_TC_NONE || dig_port->tc_type != TC_PORT_TYPEC)
> return 4;
>
> + fia = intel_tc_port_to_fia(dev_priv, tc_port);
> lane_info = 0;
> with_intel_display_power(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref)
> - lane_info = (I915_READ(PORT_TX_DFLEXDPSP) &
> + lane_info = (I915_READ(PORT_TX_DFLEXDPSP(fia)) &
> DP_LANE_ASSIGNMENT_MASK(tc_port)) >>
> DP_LANE_ASSIGNMENT_SHIFT(tc_port);
>
> @@ -5300,12 +5302,14 @@ static bool icl_tc_phy_connect(struct drm_i915_private *dev_priv,
> {
> enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
> u32 val;
> + enum display_fia fia;
>
> if (dig_port->tc_type != TC_PORT_LEGACY &&
> dig_port->tc_type != TC_PORT_TYPEC)
> return true;
>
> - val = I915_READ(PORT_TX_DFLEXDPPMS);
> + fia = intel_tc_port_to_fia(dev_priv, tc_port);
> + val = I915_READ(PORT_TX_DFLEXDPPMS(fia));
> if (!(val & DP_PHY_MODE_STATUS_COMPLETED(tc_port))) {
> DRM_DEBUG_KMS("DP PHY for TC port %d not ready\n", tc_port);
> WARN_ON(dig_port->tc_legacy_port);
> @@ -5316,10 +5320,10 @@ static bool icl_tc_phy_connect(struct drm_i915_private *dev_priv,
> * This function may be called many times in a row without an HPD event
> * in between, so try to avoid the write when we can.
> */
> - val = I915_READ(PORT_TX_DFLEXDPCSSS);
> + val = I915_READ(PORT_TX_DFLEXDPCSSS(fia));
> if (!(val & DP_PHY_MODE_STATUS_NOT_SAFE(tc_port))) {
> val |= DP_PHY_MODE_STATUS_NOT_SAFE(tc_port);
> - I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
> + I915_WRITE(PORT_TX_DFLEXDPCSSS(fia), val);
> }
>
> /*
> @@ -5327,7 +5331,7 @@ static bool icl_tc_phy_connect(struct drm_i915_private *dev_priv,
> * became disconnected. Not necessary for legacy mode.
> */
> if (dig_port->tc_type == TC_PORT_TYPEC &&
> - !(I915_READ(PORT_TX_DFLEXDPSP) & TC_LIVE_STATE_TC(tc_port))) {
> + !(I915_READ(PORT_TX_DFLEXDPSP(fia)) & TC_LIVE_STATE_TC(tc_port))) {
> DRM_DEBUG_KMS("TC PHY %d sudden disconnect.\n", tc_port);
> icl_tc_phy_disconnect(dev_priv, dig_port);
> return false;
> @@ -5344,10 +5348,13 @@ void icl_tc_phy_disconnect(struct drm_i915_private *dev_priv,
> struct intel_digital_port *dig_port)
> {
> enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
> + enum display_fia fia;
>
> if (dig_port->tc_type == TC_PORT_UNKNOWN)
> return;
>
> + fia = intel_tc_port_to_fia(dev_priv, tc_port);
> +
> /*
> * TBT disconnection flow is read the live status, what was done in
> * caller.
> @@ -5356,9 +5363,9 @@ void icl_tc_phy_disconnect(struct drm_i915_private *dev_priv,
> dig_port->tc_type == TC_PORT_LEGACY) {
> u32 val;
>
> - val = I915_READ(PORT_TX_DFLEXDPCSSS);
> + val = I915_READ(PORT_TX_DFLEXDPCSSS(fia));
> val &= ~DP_PHY_MODE_STATUS_NOT_SAFE(tc_port);
> - I915_WRITE(PORT_TX_DFLEXDPCSSS, val);
> + I915_WRITE(PORT_TX_DFLEXDPCSSS(fia), val);
> }
>
> DRM_DEBUG_KMS("Port %c TC type %s disconnected\n",
> @@ -5383,6 +5390,7 @@ static bool icl_tc_port_connected(struct drm_i915_private *dev_priv,
> {
> enum port port = intel_dig_port->base.port;
> enum tc_port tc_port = intel_port_to_tc(dev_priv, port);
> + enum display_fia fia = intel_tc_port_to_fia(dev_priv, tc_port);
> bool is_legacy, is_typec, is_tbt;
> u32 dpsp;
>
> @@ -5402,7 +5410,8 @@ static bool icl_tc_port_connected(struct drm_i915_private *dev_priv,
> * The spec says we shouldn't be using the ISR bits for detecting
> * between TC and TBT. We should use DFLEXDPSP.
> */
> - dpsp = I915_READ(PORT_TX_DFLEXDPSP);
> +
> + dpsp = I915_READ(PORT_TX_DFLEXDPSP(fia));
> is_typec = dpsp & TC_LIVE_STATE_TC(tc_port);
> is_tbt = dpsp & TC_LIVE_STATE_TBT(tc_port);
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 7e6009cefb18..8047f1bed314 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -2201,9 +2201,13 @@ enum i915_power_well_id {
> #define DW6_OLDO_DYN_PWR_DOWN_EN (1 << 28)
>
> #define FIA1_BASE 0x163000
> +#define FIA2_BASE 0x16E000
> +#define FIA3_BASE 0x16F000
> +#define _FIA(fia) _PICK((fia), FIA1_BASE, FIA2_BASE, FIA3_BASE)
> +#define _MMIO_FIA(fia, off) _MMIO(_FIA(fia) + (off))
>
> /* ICL PHY DFLEX registers */
> -#define PORT_TX_DFLEXDPMLE1 _MMIO(FIA1_BASE + 0x008C0)
> +#define PORT_TX_DFLEXDPMLE1(fia) _MMIO_FIA((fia), 0x008C0)
> #define DFLEXDPMLE1_DPMLETC_MASK(tc_port) (0xf << (4 * (tc_port)))
> #define DFLEXDPMLE1_DPMLETC_ML0(tc_port) (1 << (4 * (tc_port)))
> #define DFLEXDPMLE1_DPMLETC_ML1_0(tc_port) (3 << (4 * (tc_port)))
> @@ -11461,17 +11465,18 @@ enum skl_power_gate {
> _ICL_DSC1_RC_BUF_THRESH_1_UDW_PB, \
> _ICL_DSC1_RC_BUF_THRESH_1_UDW_PC)
>
> -#define PORT_TX_DFLEXDPSP _MMIO(FIA1_BASE + 0x008A0)
> +#define PORT_TX_DFLEXDPSP(fia) _MMIO_FIA((fia), 0x008A0)
> +#define MODULAR_FIA_MASK (1 << 4)
> #define TC_LIVE_STATE_TBT(tc_port) (1 << ((tc_port) * 8 + 6))
> #define TC_LIVE_STATE_TC(tc_port) (1 << ((tc_port) * 8 + 5))
> #define DP_LANE_ASSIGNMENT_SHIFT(tc_port) ((tc_port) * 8)
> #define DP_LANE_ASSIGNMENT_MASK(tc_port) (0xf << ((tc_port) * 8))
> #define DP_LANE_ASSIGNMENT(tc_port, x) ((x) << ((tc_port) * 8))
>
> -#define PORT_TX_DFLEXDPPMS _MMIO(FIA1_BASE + 0x00890)
> +#define PORT_TX_DFLEXDPPMS(fia) _MMIO_FIA((fia), 0x00890)
> #define DP_PHY_MODE_STATUS_COMPLETED(tc_port) (1 << (tc_port))
>
> -#define PORT_TX_DFLEXDPCSSS _MMIO(FIA1_BASE + 0x00894)
> +#define PORT_TX_DFLEXDPCSSS(fia) _MMIO_FIA((fia), 0x00894)
> #define DP_PHY_MODE_STATUS_NOT_SAFE(tc_port) (1 << (tc_port))
>
> #endif /* _I915_REG_H_ */
> diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
> index ddafc819bf30..e9dc86ed517b 100644
> --- a/drivers/gpu/drm/i915/intel_device_info.h
> +++ b/drivers/gpu/drm/i915/intel_device_info.h
> @@ -136,6 +136,7 @@ enum intel_ppgtt_type {
> func(has_gmch); \
> func(has_hotplug); \
> func(has_ipc); \
> + func(has_modular_fia); \
> func(has_overlay); \
> func(has_psr); \
> func(overlay_needs_physical); \
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 1d58f7ec5d84..e30cb4be4997 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1477,6 +1477,8 @@ bool intel_port_is_combophy(struct drm_i915_private *dev_priv, enum port port);
> bool intel_port_is_tc(struct drm_i915_private *dev_priv, enum port port);
> enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv,
> enum port port);
> +enum display_fia intel_tc_port_to_fia(struct drm_i915_private *dev_priv,
> + enum tc_port tc_port);
> int intel_get_pipe_from_crtc_id_ioctl(struct drm_device *dev, void *data,
> struct drm_file *file_priv);
> enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
> --
> 2.21.0
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
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--
Ville Syrjälä
Intel
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