Staging: vme: add ca91cx42 dma support
Add support for the DMA controller in the ca91cx42 bridge.
Signed-off-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/vme/bridges/vme_ca91cx42.h b/drivers/staging/vme/bridges/vme_ca91cx42.h
index b9b6308..221d20f 100644
--- a/drivers/staging/vme/bridges/vme_ca91cx42.h
+++ b/drivers/staging/vme/bridges/vme_ca91cx42.h
@@ -57,7 +57,7 @@
struct ca91cx42_dma_descriptor {
unsigned int dctl; /* DMA Control */
unsigned int dtbc; /* Transfer Byte Count */
- unsigned int dlv; /* PCI Address */
+ unsigned int dla; /* PCI Address */
unsigned int res1; /* Reserved */
unsigned int dva; /* Vme Address */
unsigned int res2; /* Reserved */
@@ -253,32 +253,6 @@
#define VCSR_SET 0x0FF8
#define VCSR_BS 0x0FFC
-// DMA General Control/Status Register DGCS (0x220)
-// 32-24 || GO | STOPR | HALTR | 0 || CHAIN | 0 | 0 | 0 ||
-// 23-16 || VON || VOFF ||
-// 15-08 || ACT | STOP | HALT | 0 || DONE | LERR | VERR | P_ERR ||
-// 07-00 || 0 | INT_S | INT_H | 0 || I_DNE | I_LER | I_VER | I_PER ||
-
-// VON - Length Per DMA VMEBus Transfer
-// 0000 = None
-// 0001 = 256 Bytes
-// 0010 = 512
-// 0011 = 1024
-// 0100 = 2048
-// 0101 = 4096
-// 0110 = 8192
-// 0111 = 16384
-
-// VOFF - wait between DMA tenures
-// 0000 = 0 us
-// 0001 = 16
-// 0010 = 32
-// 0011 = 64
-// 0100 = 128
-// 0101 = 256
-// 0110 = 512
-// 0111 = 1024
-
/*
* PCI Class Register
* offset 008
@@ -371,6 +345,71 @@
#define CA91CX42_BM_SLSI_RESERVED 0x3F0F0000
/*
+ * DCTL Register
+ * offset 200
+ */
+#define CA91CX42_DCTL_L2V (1<<31)
+#define CA91CX42_DCTL_VDW_M (3<<22)
+#define CA91CX42_DCTL_VDW_M (3<<22)
+#define CA91CX42_DCTL_VDW_D8 0
+#define CA91CX42_DCTL_VDW_D16 (1<<22)
+#define CA91CX42_DCTL_VDW_D32 (1<<23)
+#define CA91CX42_DCTL_VDW_D64 (3<<22)
+
+#define CA91CX42_DCTL_VAS_M (7<<16)
+#define CA91CX42_DCTL_VAS_A16 0
+#define CA91CX42_DCTL_VAS_A24 (1<<16)
+#define CA91CX42_DCTL_VAS_A32 (1<<17)
+#define CA91CX42_DCTL_VAS_USER1 (3<<17)
+#define CA91CX42_DCTL_VAS_USER2 (7<<16)
+
+#define CA91CX42_DCTL_PGM_M (1<<14)
+#define CA91CX42_DCTL_PGM_DATA 0
+#define CA91CX42_DCTL_PGM_PGM (1<<14)
+
+#define CA91CX42_DCTL_SUPER_M (1<<12)
+#define CA91CX42_DCTL_SUPER_NPRIV 0
+#define CA91CX42_DCTL_SUPER_SUPR (1<<12)
+
+#define CA91CX42_DCTL_VCT_M (1<<8)
+#define CA91CX42_DCTL_VCT_BLT (1<<8)
+#define CA91CX42_DCTL_LD64EN (1<<7)
+
+/*
+ * DCPP Register
+ * offset 218
+ */
+#define CA91CX42_DCPP_M 0xf
+#define CA91CX42_DCPP_NULL (1<<0)
+
+/*
+ * DMA General Control/Status Register (DGCS)
+ * offset 220
+ */
+#define CA91CX42_DGCS_GO (1<<31)
+#define CA91CX42_DGCS_STOP_REQ (1<<30)
+#define CA91CX42_DGCS_HALT_REQ (1<<29)
+#define CA91CX42_DGCS_CHAIN (1<<27)
+
+#define CA91CX42_DGCS_VON_M (7<<20)
+
+#define CA91CX42_DGCS_VOFF_M (0xf<<16)
+
+#define CA91CX42_DGCS_ACT (1<<15)
+#define CA91CX42_DGCS_STOP (1<<14)
+#define CA91CX42_DGCS_HALT (1<<13)
+#define CA91CX42_DGCS_DONE (1<<11)
+#define CA91CX42_DGCS_LERR (1<<10)
+#define CA91CX42_DGCS_VERR (1<<9)
+#define CA91CX42_DGCS_PERR (1<<8)
+#define CA91CX42_DGCS_INT_STOP (1<<6)
+#define CA91CX42_DGCS_INT_HALT (1<<5)
+#define CA91CX42_DGCS_INT_DONE (1<<3)
+#define CA91CX42_DGCS_INT_LERR (1<<2)
+#define CA91CX42_DGCS_INT_VERR (1<<1)
+#define CA91CX42_DGCS_INT_PERR (1<<0)
+
+/*
* PCI Interrupt Enable Register
* offset 300
*/