Commit 8c7a5d9e authored by Jay Cornwall's avatar Jay Cornwall Committed by Alex Deucher
Browse files

drm/amdkfd: Use SQC when TCP would fail in gfx9 context save. 



When a wavefront raises TRAPSTS.XNACK_ERROR with STATUS.ALLOW_REPLAY=0
subsequent memory instructions have undefined behavior. In practice
SQC stores continue to work but TCP stores do not.

Context save is permitted to fail after XNACK error because the
wavefront will be halted and subsequently terminated. However the
debugger has an interest in retrieving the wavefront VGPR/LDS state.

Detect the out-of-spec case and use SQC stores during context save
in place of TCP stores.

Signed-off-by: default avatarJay Cornwall <jay.cornwall@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5f4814de

drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler.h

+239 −126
Original line number Diff line number Diff line
@@ -274,7 +274,7 @@ static const uint32_t cwsr_trap_gfx8_hex[] = { 




static const uint32_t cwsr_trap_gfx9_hex[] = {

	0xbf820001, 0xbf82015e,

	0xbf820001, 0xbf820241,

	0xb8f8f802, 0x89788678,

	0xb8fbf803, 0x866eff7b,

	0x00000400, 0xbf85003b,
@@ -404,15 +404,57 @@ static const uint32_t cwsr_trap_gfx9_hex[] = { 
	0xbefe00c1, 0xbeff00c1,

	0xbee80080, 0xbee90080,

	0xbef600ff, 0x01000000,

	0x867aff78, 0x00400000,

	0xbf850003, 0xb8faf803,

	0x897a7aff, 0x10000000,

	0xbf85004d, 0xbe840080,

	0xd2890000, 0x00000900,

	0x80048104, 0xd2890001,

	0x00000900, 0x80048104,

	0xd2890002, 0x00000900,

	0x80048104, 0xd2890003,

	0x00000900, 0x80048104,

	0xc069003a, 0x00000070,

	0xbf8cc07f, 0x80709070,

	0xbf06c004, 0xbf84ffee,

	0xbe840080, 0xd2890000,

	0x00000901, 0x80048104,

	0xd2890001, 0x00000901,

	0x80048104, 0xd2890002,

	0x00000901, 0x80048104,

	0xd2890003, 0x00000901,

	0x80048104, 0xc069003a,

	0x00000070, 0xbf8cc07f,

	0x80709070, 0xbf06c004,

	0xbf84ffee, 0xbe840080,

	0xd2890000, 0x00000902,

	0x80048104, 0xd2890001,

	0x00000902, 0x80048104,

	0xd2890002, 0x00000902,

	0x80048104, 0xd2890003,

	0x00000902, 0x80048104,

	0xc069003a, 0x00000070,

	0xbf8cc07f, 0x80709070,

	0xbf06c004, 0xbf84ffee,

	0xbe840080, 0xd2890000,

	0x00000903, 0x80048104,

	0xd2890001, 0x00000903,

	0x80048104, 0xd2890002,

	0x00000903, 0x80048104,

	0xd2890003, 0x00000903,

	0x80048104, 0xc069003a,

	0x00000070, 0xbf8cc07f,

	0x80709070, 0xbf06c004,

	0xbf84ffee, 0xbf820008,

	0xe0724000, 0x701d0000,

	0xe0724100, 0x701d0100,

	0xe0724200, 0x701d0200,

	0xe0724300, 0x701d0300,

	0xbefe00c1, 0xbeff00c1,

	0xb8fb4306, 0x867bc17b,

	0xbf84002c, 0xbf8a0000,

	0xbf840063, 0xbf8a0000,

	0x867aff6f, 0x04000000,

	0xbf840028, 0x8e7b867b,

	0xbf84005f, 0x8e7b867b,

	0x8e7b827b, 0xbef6007b,

	0xb8f02a05, 0x80708170,

	0x8e708a70, 0xb8fa1605,
@@ -422,144 +464,215 @@ static const uint32_t cwsr_trap_gfx9_hex[] = { 
	0x01000000, 0xbefc0080,

	0xd28c0002, 0x000100c1,

	0xd28d0003, 0x000204c1,

	0xd1060002, 0x00011103,

	0x7e0602ff, 0x00000200,

	0xbefc00ff, 0x00010000,

	0xbe800077, 0x8677ff77,

	0xff7fffff, 0x8777ff77,

	0x00058000, 0xd8ec0000,

	0x00000002, 0xbf8cc07f,

	0xe0765000, 0x701d0002,

	0x68040702, 0xd0c9006a,

	0x0000f702, 0xbf87fff7,

	0xbef70000, 0xbef000ff,

	0x00000400, 0xbefe00c1,

	0xbeff00c1, 0xb8fb2a05,

	0x807b817b, 0x8e7b827b,

	0x8e76887b, 0xbef600ff,

	0x01000000, 0xbefc0084,

	0xbf0a7b7c, 0xbf840015,

	0xbf11017c, 0x807bff7b,

	0x00001000, 0x7e000300,

	0x7e020301, 0x7e040302,

	0x7e060303, 0xe0724000,

	0x701d0000, 0xe0724100,

	0x701d0100, 0xe0724200,

	0x701d0200, 0xe0724300,

	0x701d0300, 0x807c847c,

	0x8070ff70, 0x00000400,

	0xbf0a7b7c, 0xbf85ffef,

	0xbf9c0000, 0xbf8200da,

	0xbef4007e, 0x8675ff7f,

	0x0000ffff, 0x8775ff75,

	0x00040000, 0xbef60080,

	0xbef700ff, 0x00807fac,

	0x866eff7f, 0x08000000,

	0x8f6e836e, 0x87776e77,

	0x866eff7f, 0x70000000,

	0x8f6e816e, 0x87776e77,

	0x866eff7f, 0x04000000,

	0xbf84001e, 0xbefe00c1,

	0xbeff00c1, 0xb8ef4306,

	0x866fc16f, 0xbf840019,

	0x8e6f866f, 0x8e6f826f,

	0xbef6006f, 0xb8f82a05,

	0x80788178, 0x8e788a78,

	0xb8ee1605, 0x806e816e,

	0x8e6e866e, 0x80786e78,

	0x8078ff78, 0x00000080,

	0xbef600ff, 0x01000000,

	0xbefc0080, 0xe0510000,

	0x781d0000, 0xe0510100,

	0x781d0000, 0x807cff7c,

	0x00000200, 0x8078ff78,

	0x00000200, 0xbf0a6f7c,

	0xbf85fff6, 0xbef80080,

	0x867aff78, 0x00400000,

	0xbf850003, 0xb8faf803,

	0x897a7aff, 0x10000000,

	0xbf850030, 0x24040682,

	0xd86e4000, 0x00000002,

	0xbf8cc07f, 0xbe840080,

	0xd2890000, 0x00000900,

	0x80048104, 0xd2890001,

	0x00000900, 0x80048104,

	0xd2890002, 0x00000900,

	0x80048104, 0xd2890003,

	0x00000900, 0x80048104,

	0xc069003a, 0x00000070,

	0xbf8cc07f, 0x80709070,

	0xbf06c004, 0xbf84ffee,

	0xbe840080, 0xd2890000,

	0x00000901, 0x80048104,

	0xd2890001, 0x00000901,

	0x80048104, 0xd2890002,

	0x00000901, 0x80048104,

	0xd2890003, 0x00000901,

	0x80048104, 0xc069003a,

	0x00000070, 0xbf8cc07f,

	0x80709070, 0xbf06c004,

	0xbf84ffee, 0x680404ff,

	0x00000200, 0xd0c9006a,

	0x0000f702, 0xbf87ffd2,

	0xbf820015, 0xd1060002,

	0x00011103, 0x7e0602ff,

	0x00000200, 0xbefc00ff,

	0x00010000, 0xbe800077,

	0x8677ff77, 0xff7fffff,

	0x8777ff77, 0x00058000,

	0xd8ec0000, 0x00000002,

	0xbf8cc07f, 0xe0765000,

	0x701d0002, 0x68040702,

	0xd0c9006a, 0x0000f702,

	0xbf87fff7, 0xbef70000,

	0xbef000ff, 0x00000400,

	0xbefe00c1, 0xbeff00c1,

	0xb8ef2a05, 0x806f816f,

	0x8e6f826f, 0x8e76886f,

	0xb8fb2a05, 0x807b817b,

	0x8e7b827b, 0x8e76887b,

	0xbef600ff, 0x01000000,

	0xbeee0078, 0x8078ff78,

	0x00000400, 0xbefc0084,

	0xbf11087c, 0x806fff6f,

	0x00008000, 0xe0524000,

	0x781d0000, 0xe0524100,

	0x781d0100, 0xe0524200,

	0x781d0200, 0xe0524300,

	0x781d0300, 0xbf8c0f70,

	0xbefc0084, 0xbf0a7b7c,

	0xbf84006d, 0xbf11017c,

	0x807bff7b, 0x00001000,

	0x867aff78, 0x00400000,

	0xbf850003, 0xb8faf803,

	0x897a7aff, 0x10000000,

	0xbf850051, 0xbe840080,

	0xd2890000, 0x00000900,

	0x80048104, 0xd2890001,

	0x00000900, 0x80048104,

	0xd2890002, 0x00000900,

	0x80048104, 0xd2890003,

	0x00000900, 0x80048104,

	0xc069003a, 0x00000070,

	0xbf8cc07f, 0x80709070,

	0xbf06c004, 0xbf84ffee,

	0xbe840080, 0xd2890000,

	0x00000901, 0x80048104,

	0xd2890001, 0x00000901,

	0x80048104, 0xd2890002,

	0x00000901, 0x80048104,

	0xd2890003, 0x00000901,

	0x80048104, 0xc069003a,

	0x00000070, 0xbf8cc07f,

	0x80709070, 0xbf06c004,

	0xbf84ffee, 0xbe840080,

	0xd2890000, 0x00000902,

	0x80048104, 0xd2890001,

	0x00000902, 0x80048104,

	0xd2890002, 0x00000902,

	0x80048104, 0xd2890003,

	0x00000902, 0x80048104,

	0xc069003a, 0x00000070,

	0xbf8cc07f, 0x80709070,

	0xbf06c004, 0xbf84ffee,

	0xbe840080, 0xd2890000,

	0x00000903, 0x80048104,

	0xd2890001, 0x00000903,

	0x80048104, 0xd2890002,

	0x00000903, 0x80048104,

	0xd2890003, 0x00000903,

	0x80048104, 0xc069003a,

	0x00000070, 0xbf8cc07f,

	0x80709070, 0xbf06c004,

	0xbf84ffee, 0x807c847c,

	0xbf0a7b7c, 0xbf85ffb1,

	0xbf9c0000, 0xbf820012,

	0x7e000300, 0x7e020301,

	0x7e040302, 0x7e060303,

	0x807c847c, 0x8078ff78,

	0x00000400, 0xbf0a6f7c,

	0xbf85ffee, 0xbf9c0000,

	0xe0524000, 0x6e1d0000,

	0xe0524100, 0x6e1d0100,

	0xe0524200, 0x6e1d0200,

	0xe0524300, 0x6e1d0300,

	0xe0724000, 0x701d0000,

	0xe0724100, 0x701d0100,

	0xe0724200, 0x701d0200,

	0xe0724300, 0x701d0300,

	0x807c847c, 0x8070ff70,

	0x00000400, 0xbf0a7b7c,

	0xbf85ffef, 0xbf9c0000,

	0xbf8200da, 0xbef4007e,

	0x8675ff7f, 0x0000ffff,

	0x8775ff75, 0x00040000,

	0xbef60080, 0xbef700ff,

	0x00807fac, 0x866eff7f,

	0x08000000, 0x8f6e836e,

	0x87776e77, 0x866eff7f,

	0x70000000, 0x8f6e816e,

	0x87776e77, 0x866eff7f,

	0x04000000, 0xbf84001e,

	0xbefe00c1, 0xbeff00c1,

	0xb8ef4306, 0x866fc16f,

	0xbf840019, 0x8e6f866f,

	0x8e6f826f, 0xbef6006f,

	0xb8f82a05, 0x80788178,

	0x8e788a78, 0xb8ee1605,

	0x806e816e, 0x8e6e866e,

	0x80786e78, 0x80f8c078,

	0xb8ef1605, 0x806f816f,

	0x8e6f846f, 0x8e76826f,

	0xbef600ff, 0x01000000,

	0xbefc006f, 0xc031003a,

	0x00000078, 0x80f8c078,

	0xbf8cc07f, 0x80fc907c,

	0xbf800000, 0xbe802d00,

	0xbe822d02, 0xbe842d04,

	0xbe862d06, 0xbe882d08,

	0xbe8a2d0a, 0xbe8c2d0c,

	0xbe8e2d0e, 0xbf06807c,

	0xbf84fff0, 0xb8f82a05,

	0x80786e78, 0x8078ff78,

	0x00000080, 0xbef600ff,

	0x01000000, 0xbefc0080,

	0xe0510000, 0x781d0000,

	0xe0510100, 0x781d0000,

	0x807cff7c, 0x00000200,

	0x8078ff78, 0x00000200,

	0xbf0a6f7c, 0xbf85fff6,

	0xbef80080, 0xbefe00c1,

	0xbeff00c1, 0xb8ef2a05,

	0x806f816f, 0x8e6f826f,

	0x8e76886f, 0xbef600ff,

	0x01000000, 0xbeee0078,

	0x8078ff78, 0x00000400,

	0xbefc0084, 0xbf11087c,

	0x806fff6f, 0x00008000,

	0xe0524000, 0x781d0000,

	0xe0524100, 0x781d0100,

	0xe0524200, 0x781d0200,

	0xe0524300, 0x781d0300,

	0xbf8c0f70, 0x7e000300,

	0x7e020301, 0x7e040302,

	0x7e060303, 0x807c847c,

	0x8078ff78, 0x00000400,

	0xbf0a6f7c, 0xbf85ffee,

	0xbf9c0000, 0xe0524000,

	0x6e1d0000, 0xe0524100,

	0x6e1d0100, 0xe0524200,

	0x6e1d0200, 0xe0524300,

	0x6e1d0300, 0xb8f82a05,

	0x80788178, 0x8e788a78,

	0xb8ee1605, 0x806e816e,

	0x8e6e866e, 0x80786e78,

	0xbef60084, 0xbef600ff,

	0x01000000, 0xc0211bfa,

	0x80f8c078, 0xb8ef1605,

	0x806f816f, 0x8e6f846f,

	0x8e76826f, 0xbef600ff,

	0x01000000, 0xbefc006f,

	0xc031003a, 0x00000078,

	0x80f8c078, 0xbf8cc07f,

	0x80fc907c, 0xbf800000,

	0xbe802d00, 0xbe822d02,

	0xbe842d04, 0xbe862d06,

	0xbe882d08, 0xbe8a2d0a,

	0xbe8c2d0c, 0xbe8e2d0e,

	0xbf06807c, 0xbf84fff0,

	0xb8f82a05, 0x80788178,

	0x8e788a78, 0xb8ee1605,

	0x806e816e, 0x8e6e866e,

	0x80786e78, 0xbef60084,

	0xbef600ff, 0x01000000,

	0xc0211bfa, 0x00000078,

	0x80788478, 0xc0211b3a,

	0x00000078, 0x80788478,

	0xc0211b3a, 0x00000078,

	0x80788478, 0xc0211b7a,

	0xc0211b7a, 0x00000078,

	0x80788478, 0xc0211c3a,

	0x00000078, 0x80788478,

	0xc0211c3a, 0x00000078,

	0x80788478, 0xc0211c7a,

	0xc0211c7a, 0x00000078,

	0x80788478, 0xc0211eba,

	0x00000078, 0x80788478,

	0xc0211eba, 0x00000078,

	0x80788478, 0xc0211efa,

	0xc0211efa, 0x00000078,

	0x80788478, 0xc0211a3a,

	0x00000078, 0x80788478,

	0xc0211a3a, 0x00000078,

	0x80788478, 0xc0211a7a,

	0xc0211a7a, 0x00000078,

	0x80788478, 0xc0211cfa,

	0x00000078, 0x80788478,

	0xc0211cfa, 0x00000078,

	0x80788478, 0xbf8cc07f,

	0xbefc006f, 0xbefe0070,

	0xbeff0071, 0x866f7bff,

	0x000003ff, 0xb96f4803,

	0x866f7bff, 0xfffff800,

	0x8f6f8b6f, 0xb96fa2c3,

	0xb973f801, 0xb8ee2a05,

	0x806e816e, 0x8e6e8a6e,

	0xb8ef1605, 0x806f816f,

	0x8e6f866f, 0x806e6f6e,

	0x806e746e, 0x826f8075,

	0x866fff6f, 0x0000ffff,

	0xc00b1c37, 0x00000050,

	0xc00b1d37, 0x00000060,

	0xc0031e77, 0x00000074,

	0xbf8cc07f, 0x866fff6d,

	0xf8000000, 0x8f6f9b6f,

	0x8e6f906f, 0xbeee0080,

	0x876e6f6e, 0x866fff6d,

	0x04000000, 0x8f6f9a6f,

	0x8e6f8f6f, 0x876e6f6e,

	0x866fff7a, 0x00800000,

	0x8f6f976f, 0xb96ef807,

	0x866dff6d, 0x0000ffff,

	0x86fe7e7e, 0x86ea6a6a,

	0x8f6e837a, 0xb96ee0c2,

	0xbf800002, 0xb97a0002,

	0xbf8a0000, 0x95806f6c,

	0xbf810000, 0x00000000,

	0xbf8cc07f, 0xbefc006f,

	0xbefe0070, 0xbeff0071,

	0x866f7bff, 0x000003ff,

	0xb96f4803, 0x866f7bff,

	0xfffff800, 0x8f6f8b6f,

	0xb96fa2c3, 0xb973f801,

	0xb8ee2a05, 0x806e816e,

	0x8e6e8a6e, 0xb8ef1605,

	0x806f816f, 0x8e6f866f,

	0x806e6f6e, 0x806e746e,

	0x826f8075, 0x866fff6f,

	0x0000ffff, 0xc00b1c37,

	0x00000050, 0xc00b1d37,

	0x00000060, 0xc0031e77,

	0x00000074, 0xbf8cc07f,

	0x866fff6d, 0xf8000000,

	0x8f6f9b6f, 0x8e6f906f,

	0xbeee0080, 0x876e6f6e,

	0x866fff6d, 0x04000000,

	0x8f6f9a6f, 0x8e6f8f6f,

	0x876e6f6e, 0x866fff7a,

	0x00800000, 0x8f6f976f,

	0xb96ef807, 0x866dff6d,

	0x0000ffff, 0x86fe7e7e,

	0x86ea6a6a, 0x8f6e837a,

	0xb96ee0c2, 0xbf800002,

	0xb97a0002, 0xbf8a0000,

	0x95806f6c, 0xbf810000,

};



static const uint32_t cwsr_trap_gfx10_hex[] = {

drivers/gpu/drm/amd/amdkfd/cwsr_trap_handler_gfx9.asm

+81 −0
Original line number Diff line number Diff line
@@ -94,6 +94,7 @@ var SGPR_SAVE_USE_SQC = 1 //use SQC D$ to do the write 
var USE_MTBUF_INSTEAD_OF_MUBUF	    =	0		    //because TC EMU currently asserts on 0 of // overload DFMT field to carry 4 more bits of stride for MUBUF opcodes

var SWIZZLE_EN			    =	0		    //whether we use swizzled buffer addressing

var ACK_SQC_STORE		    =	1		    //workaround for suspected SQC store bug causing incorrect stores under concurrency

var SAVE_AFTER_XNACK_ERROR	    =	1		    //workaround for TCP store failure after XNACK error when ALLOW_REPLAY=0, for debugger



/**************************************************************************/

/*			variables					  */
@@ -107,6 +108,7 @@ var SQ_WAVE_STATUS_PRE_SPI_PRIO_SHIFT = 0 
var SQ_WAVE_STATUS_PRE_SPI_PRIO_SIZE    = 1

var SQ_WAVE_STATUS_POST_SPI_PRIO_SHIFT  = 3

var SQ_WAVE_STATUS_POST_SPI_PRIO_SIZE   = 29

var SQ_WAVE_STATUS_ALLOW_REPLAY_MASK    = 0x400000



var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SHIFT	= 12

var SQ_WAVE_LDS_ALLOC_LDS_SIZE_SIZE	= 9
@@ -127,6 +129,7 @@ var SQ_WAVE_TRAPSTS_POST_SAVECTX_MASK = 0xFFFFF800 
var SQ_WAVE_TRAPSTS_POST_SAVECTX_SHIFT	=   11

var SQ_WAVE_TRAPSTS_POST_SAVECTX_SIZE	=   21

var SQ_WAVE_TRAPSTS_ILLEGAL_INST_MASK	=   0x800

var SQ_WAVE_TRAPSTS_XNACK_ERROR_MASK	=   0x10000000



var SQ_WAVE_IB_STS_RCNT_SHIFT		=   16			//FIXME

var SQ_WAVE_IB_STS_FIRST_REPLAY_SHIFT	=   15			//FIXME
@@ -584,6 +587,16 @@ if G8SR_VGPR_SR_IN_DWX4 
	s_and_b32 s_save_buf_rsrc1, s_save_buf_rsrc1, 0x0000FFFF   // reset const stride to 0

	s_or_b32  s_save_buf_rsrc1, s_save_buf_rsrc1, S_SAVE_BUF_RSRC_WORD1_STRIDE  // reset const stride to 4 bytes

else

if SAVE_AFTER_XNACK_ERROR

	check_if_tcp_store_ok()

	s_cbranch_scc1 L_SAVE_FIRST_VGPRS_WITH_TCP



	write_vgprs_to_mem_with_sqc(v0, 4, s_save_buf_rsrc0, s_save_mem_offset)

	s_branch L_SAVE_LDS



L_SAVE_FIRST_VGPRS_WITH_TCP:

end



	buffer_store_dword v0, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1

	buffer_store_dword v1, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256

	buffer_store_dword v2, v0, s_save_buf_rsrc0, s_save_mem_offset slc:1 glc:1  offset:256*2
@@ -683,6 +696,27 @@ elsif LDS_DMA_ENABLE==1 && UNROLL==1 // UNROOL , has ichace miss 
else   // BUFFER_STORE

      v_mbcnt_lo_u32_b32 v2, 0xffffffff, 0x0

      v_mbcnt_hi_u32_b32 v3, 0xffffffff, v2	// tid



if SAVE_AFTER_XNACK_ERROR

	check_if_tcp_store_ok()

	s_cbranch_scc1 L_SAVE_LDS_WITH_TCP



	v_lshlrev_b32 v2, 2, v3

L_SAVE_LDS_LOOP_SQC:

	ds_read2_b32 v[0:1], v2 offset0:0 offset1:0x40

	s_waitcnt lgkmcnt(0)



	write_vgprs_to_mem_with_sqc(v0, 2, s_save_buf_rsrc0, s_save_mem_offset)



	v_add_u32 v2, 0x200, v2

	v_cmp_lt_u32 vcc[0:1], v2, s_save_alloc_size

	s_cbranch_vccnz L_SAVE_LDS_LOOP_SQC



	s_branch L_SAVE_LDS_DONE



L_SAVE_LDS_WITH_TCP:

end



      v_mul_i32_i24 v2, v3, 8	// tid*8

      v_mov_b32 v3, 256*2

      s_mov_b32 m0, 0x10000
@@ -769,6 +803,21 @@ else 
    s_set_gpr_idx_on	m0, 0x1 //M0[7:0] = M0[7:0] and M0[15:12] = 0x1

    s_add_u32	    s_save_alloc_size, s_save_alloc_size, 0x1000		    //add 0x1000 since we compare m0 against it later



if SAVE_AFTER_XNACK_ERROR

	check_if_tcp_store_ok()

	s_cbranch_scc1 L_SAVE_VGPR_LOOP



L_SAVE_VGPR_LOOP_SQC:

	write_vgprs_to_mem_with_sqc(v0, 4, s_save_buf_rsrc0, s_save_mem_offset)



	s_add_u32 m0, m0, 4

	s_cmp_lt_u32 m0, s_save_alloc_size

	s_cbranch_scc1 L_SAVE_VGPR_LOOP_SQC



	s_set_gpr_idx_off

	s_branch L_SAVE_VGPR_END

end



  L_SAVE_VGPR_LOOP:

    v_mov_b32	    v0, v0		//v0 = v[0+m0]

    v_mov_b32	    v1, v1		//v0 = v[0+m0]
@@ -1265,7 +1314,39 @@ function read_16sgpr_from_mem(s, s_rsrc, s_mem_offset) 
    s_sub_u32	    s_mem_offset, s_mem_offset, 4*16

end



function check_if_tcp_store_ok

	// If STATUS.ALLOW_REPLAY=0 and TRAPSTS.XNACK_ERROR=1 then TCP stores will fail.

	s_and_b32 s_save_tmp, s_save_status, SQ_WAVE_STATUS_ALLOW_REPLAY_MASK

	s_cbranch_scc1 L_TCP_STORE_CHECK_DONE



	s_getreg_b32 s_save_tmp, hwreg(HW_REG_TRAPSTS)

	s_andn2_b32 s_save_tmp, SQ_WAVE_TRAPSTS_XNACK_ERROR_MASK, s_save_tmp



L_TCP_STORE_CHECK_DONE:

end



function write_vgpr_to_mem_with_sqc(v, s_rsrc, s_mem_offset)

	s_mov_b32 s4, 0



L_WRITE_VGPR_LANE_LOOP:

	for var lane = 0; lane < 4; ++ lane

		v_readlane_b32 s[lane], v, s4

		s_add_u32 s4, s4, 1

	end



	s_buffer_store_dwordx4 s[0:3], s_rsrc, s_mem_offset glc:1

	ack_sqc_store_workaround()



	s_add_u32 s_mem_offset, s_mem_offset, 0x10

	s_cmp_eq_u32 s4, 0x40

	s_cbranch_scc0 L_WRITE_VGPR_LANE_LOOP

end



function write_vgprs_to_mem_with_sqc(v, n_vgprs, s_rsrc, s_mem_offset)

	for var vgpr = 0; vgpr < n_vgprs; ++ vgpr

		write_vgpr_to_mem_with_sqc(v[vgpr], s_rsrc, s_mem_offset)

	end

end



function get_lds_size_bytes(s_lds_size_byte)

    // SQ LDS granularity is 64DW, while PGM_RSRC2.lds_size is in granularity 128DW

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