rtl/gfx: implement host memory interface

1 files changed, 5 insertions, 1 deletions

diff --git a/rtl/gfx/gfx_defs.sv b/rtl/gfx/gfx_defs.sv
index 86fa21a..20102a4 100644
--- a/rtl/gfx/gfx_defs.sv
+++ b/rtl/gfx/gfx_defs.sv
@@ -162,9 +162,13 @@ typedef struct packed
 `define GFX_MEM_SUBWORD_BITS   ($clog2(`GFX_MEM_DATA_BITS / 8))
 `define GFX_MEM_ADDR_BITS      (`GFX_MEM_WORD_ADDR_BITS + `GFX_MEM_SUBWORD_BITS)
 `define GFX_MEM_RESPONSE_DEPTH 2 // Ajustar
-`define GFX_MEM_TRANS_DEPTH    4 // Ajustar
+`define GFX_MEM_TRANS_DEPTH    4 // NO TOCAR, ver `GFX_MEM_MAX_PENDING_READS
 `define GFX_MEM_DISPATCH_DEPTH 8 // Nótese que platform.vram_0.s1.maximumPendingReadTransactions = 7
 
+// NO TOCAR. Esto debe coincidir perfectamente con gfx_hw.tcl
+`define GFX_VRAM_MAX_PENDING_READS 7 // platform.vram_0.s1.maximumPendingReadTransactions
+`define GFX_MEM_MAX_PENDING_READS  (1 + `GFX_MEM_TRANS_DEPTH + 1 + `GFX_VRAM_MAX_PENDING_READS)
+
 typedef logic[`GFX_MEM_DATA_BITS - 1:0]      vram_word;
 typedef logic[`GFX_MEM_ADDR_BITS - 1:0]      vram_byte_addr;
 typedef logic[`GFX_MEM_WORD_ADDR_BITS - 1:0] vram_addr;