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drm/radeon/kms: add support for gen2 pcie link speeds

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Supported on rv6xx/r7xx/evergreen.  Cards come up in gen1 mode.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2011-01-06 18:49:35 -05:00
committed by Dave Airlie
parent 3313e3d433
commit 9e46a48df2
7 changed files with 348 additions and 0 deletions
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38
drivers/gpu/drm/radeon/evergreend.h
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@@ -581,6 +581,44 @@
# define DC_HPDx_RX_INT_TIMER(x) ((x) << 16)
# define DC_HPDx_EN (1 << 28)
/* PCIE link stuff */
#define PCIE_LC_TRAINING_CNTL 0xa1 /* PCIE_P */
#define PCIE_LC_LINK_WIDTH_CNTL 0xa2 /* PCIE_P */
# define LC_LINK_WIDTH_SHIFT 0
# define LC_LINK_WIDTH_MASK 0x7
# define LC_LINK_WIDTH_X0 0
# define LC_LINK_WIDTH_X1 1
# define LC_LINK_WIDTH_X2 2
# define LC_LINK_WIDTH_X4 3
# define LC_LINK_WIDTH_X8 4
# define LC_LINK_WIDTH_X16 6
# define LC_LINK_WIDTH_RD_SHIFT 4
# define LC_LINK_WIDTH_RD_MASK 0x70
# define LC_RECONFIG_ARC_MISSING_ESCAPE (1 << 7)
# define LC_RECONFIG_NOW (1 << 8)
# define LC_RENEGOTIATION_SUPPORT (1 << 9)
# define LC_RENEGOTIATE_EN (1 << 10)
# define LC_SHORT_RECONFIG_EN (1 << 11)
# define LC_UPCONFIGURE_SUPPORT (1 << 12)
# define LC_UPCONFIGURE_DIS (1 << 13)
#define PCIE_LC_SPEED_CNTL 0xa4 /* PCIE_P */
# define LC_GEN2_EN_STRAP (1 << 0)
# define LC_TARGET_LINK_SPEED_OVERRIDE_EN (1 << 1)
# define LC_FORCE_EN_HW_SPEED_CHANGE (1 << 5)
# define LC_FORCE_DIS_HW_SPEED_CHANGE (1 << 6)
# define LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_MASK (0x3 << 8)
# define LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_SHIFT 3
# define LC_CURRENT_DATA_RATE (1 << 11)
# define LC_VOLTAGE_TIMER_SEL_MASK (0xf << 14)
# define LC_CLR_FAILED_SPD_CHANGE_CNT (1 << 21)
# define LC_OTHER_SIDE_EVER_SENT_GEN2 (1 << 23)
# define LC_OTHER_SIDE_SUPPORTS_GEN2 (1 << 24)
#define MM_CFGREGS_CNTL 0x544c
# define MM_WR_TO_CFG_EN (1 << 3)
#define LINK_CNTL2 0x88 /* F0 */
# define TARGET_LINK_SPEED_MASK (0xf << 0)
# define SELECTABLE_DEEMPHASIS (1 << 6)
/*
* PM4
*/