IRQ support in NWL DMA engine

1 files changed, 73 insertions, 0 deletions

diff --git a/dma/nwl_register.c b/dma/nwl_register.c
new file mode 100644
index 0000000..5bb6e16
--- /dev/null
+++ b/dma/nwl_register.c
@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+#include "pcilib.h"
+
+#include "pci.h"
+#include "error.h"
+#include "tools.h"
+
+#include "nwl.h"
+#include "nwl_register.h"
+
+int nwl_add_registers(nwl_dma_t *ctx) {
+    int err;
+    size_t n, i, j;
+    int length;
+    const char *names[NWL_MAX_DMA_ENGINE_REGISTERS];
+    uintptr_t addr[NWL_MAX_DMA_ENGINE_REGISTERS];
+    
+	// We don't want DMA registers
+    if (pcilib_find_bank_by_addr(ctx->pcilib, PCILIB_REGISTER_BANK_DMA) == PCILIB_REGISTER_BANK_INVALID) return 0;
+    
+    err = pcilib_add_registers(ctx->pcilib, 0, nwl_dma_registers);
+    if (err) return err;
+
+    err = pcilib_add_registers(ctx->pcilib, 0, nwl_xrawdata_registers);
+    if (err) return err;
+
+    
+    for (n = 0; nwl_dma_engine_registers[n].bits; n++) {
+	names[n] = nwl_dma_engine_registers[n].name;
+	addr[n] = nwl_dma_engine_registers[n].addr;
+    }
+
+    if (ctx->n_engines > 9) length = 2;
+    else length = 1;
+
+    
+    for (i = 0; i < ctx->n_engines; i++) {
+	for (j = 0; nwl_dma_engine_registers[j].bits; j++) {
+	    const char *direction;
+	    nwl_dma_engine_registers[j].name = nwl_dma_engine_register_names[i * NWL_MAX_DMA_ENGINE_REGISTERS + j];
+	    nwl_dma_engine_registers[j].addr = addr[j] + (ctx->engines[i].base_addr - ctx->base_addr);
+//	    printf("%lx %lx\n", (ctx->engines[i].base_addr - ctx->base_addr), nwl_dma_engine_registers[j].addr);
+	    
+	    switch (ctx->engines[i].desc.direction) {
+		case PCILIB_DMA_FROM_DEVICE:
+		    direction =  "r";
+		break;
+		case PCILIB_DMA_TO_DEVICE:
+		    direction = "w";
+		break;
+		default:
+		    direction = "";
+	    }
+	    
+	    sprintf((char*)nwl_dma_engine_registers[j].name, names[j], length, ctx->engines[i].desc.addr, direction);
+	}
+	
+        err = pcilib_add_registers(ctx->pcilib, n, nwl_dma_engine_registers);
+	if (err) return err;
+    }
+    
+    for (n = 0; nwl_dma_engine_registers[n].bits; n++) {
+	nwl_dma_engine_registers[n].name = names[n];
+	nwl_dma_engine_registers[n].addr = addr[n];
+    }
+    
+    return 0;
+}