[POWERPC] bestcomm: GenBD task support

This is the microcode for the GenBD task and the associated
support code. This is a generic task that copy data to/from
a hardware FIFO. This is currently locked to 32bits wide
access but could be extended as needed.

The microcode itself comes directly from the offical
API (v2.2)

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

arch/powerpc/sysdev/bestcomm/Kconfig

@@ -30,3 +30,10 @@ config PPC_BESTCOMM_FEC
 	help
 	  This option enables the support for the FEC tasks.
 
+config PPC_BESTCOMM_GEN_BD
+	tristate "Bestcomm GenBD tasks support"
+	depends on PPC_BESTCOMM
+	default n
+	help
+	  This option enables the support for the GenBD tasks.
+

arch/powerpc/sysdev/bestcomm/Makefile

@@ -5,8 +5,10 @@
 bestcomm-core-objs	:= bestcomm.o sram.o
 bestcomm-ata-objs	:= ata.o bcom_ata_task.o
 bestcomm-fec-objs	:= fec.o bcom_fec_rx_task.o bcom_fec_tx_task.o
+bestcomm-gen-bd-objs	:= gen_bd.o bcom_gen_bd_rx_task.o bcom_gen_bd_tx_task.o
 
 obj-$(CONFIG_PPC_BESTCOMM)		+= bestcomm-core.o
 obj-$(CONFIG_PPC_BESTCOMM_ATA)		+= bestcomm-ata.o
 obj-$(CONFIG_PPC_BESTCOMM_FEC)		+= bestcomm-fec.o
+obj-$(CONFIG_PPC_BESTCOMM_GEN_BD)	+= bestcomm-gen-bd.o
 

arch/powerpc/sysdev/bestcomm/bcom_gen_bd_rx_task.c

@@ -0,0 +1,63 @@
+/*
+ * Bestcomm GenBD RX task microcode
+ *
+ * Copyright (C) 2006 AppSpec Computer Technologies Corp.
+ *                    Jeff Gibbons <jeff.gibbons@appspec.com>
+ * Copyright (c) 2004 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Based on BestCommAPI-2.2/code_dma/image_rtos1/dma_image.hex
+ * on Tue Mar 4 10:14:12 2006 GMT
+ *
+ */
+
+#include <asm/types.h>
+
+/*
+ * The header consists of the following fields:
+ *	u32	magic;
+ *	u8	desc_size;
+ *	u8	var_size;
+ *	u8	inc_size;
+ *	u8	first_var;
+ *	u8	reserved[8];
+ *
+ * The size fields contain the number of 32-bit words.
+ */
+
+u32 bcom_gen_bd_rx_task[] = {
+	/* header */
+	0x4243544b,
+	0x0d020409,
+	0x00000000,
+	0x00000000,
+
+	/* Task descriptors */
+	0x808220da, /* LCD: idx0 = var1, idx1 = var4; idx1 <= var3; idx0 += inc3, idx1 += inc2 */
+	0x13e01010, /*   DRD1A: var4 = var2; FN=0 MORE init=31 WS=0 RS=0 */
+	0xb880025b, /*   LCD: idx2 = *idx1, idx3 = var0; idx2 < var9; idx2 += inc3, idx3 += inc3 */
+	0x10001308, /*     DRD1A: var4 = idx1; FN=0 MORE init=0 WS=0 RS=0 */
+	0x60140002, /*     DRD2A: EU0=0 EU1=0 EU2=0 EU3=2 EXT init=0 WS=2 RS=2 */
+	0x0cccfcca, /*     DRD2B1: *idx3 = EU3(); EU3(*idx3,var10)  */
+	0xd9190240, /*   LCDEXT: idx2 = idx2; idx2 > var9; idx2 += inc0 */
+	0xb8c5e009, /*   LCD: idx3 = *(idx1 + var00000015); ; idx3 += inc1 */
+	0x07fecf80, /*     DRD1A: *idx3 = *idx0; FN=0 INT init=31 WS=3 RS=3 */
+	0x99190024, /*   LCD: idx2 = idx2; idx2 once var0; idx2 += inc4 */
+	0x60000005, /*     DRD2A: EU0=0 EU1=0 EU2=0 EU3=5 EXT init=0 WS=0 RS=0 */
+	0x0c4cf889, /*     DRD2B1: *idx1 = EU3(); EU3(idx2,var9)  */
+	0x000001f8, /*   NOP */
+
+	/* VAR[9]-VAR[10] */
+	0x40000000,
+	0x7fff7fff,
+
+	/* INC[0]-INC[3] */
+	0x40000000,
+	0xe0000000,
+	0xa0000008,
+	0x20000000,
+};
+

arch/powerpc/sysdev/bestcomm/bcom_gen_bd_tx_task.c

@@ -0,0 +1,69 @@
+/*
+ * Bestcomm GenBD TX task microcode
+ *
+ * Copyright (C) 2006 AppSpec Computer Technologies Corp.
+ *                    Jeff Gibbons <jeff.gibbons@appspec.com>
+ * Copyright (c) 2004 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Based on BestCommAPI-2.2/code_dma/image_rtos1/dma_image.hex
+ * on Tue Mar 4 10:14:12 2006 GMT
+ *
+ */
+
+#include <asm/types.h>
+
+/*
+ * The header consists of the following fields:
+ *	u32	magic;
+ *	u8	desc_size;
+ *	u8	var_size;
+ *	u8	inc_size;
+ *	u8	first_var;
+ *	u8	reserved[8];
+ *
+ * The size fields contain the number of 32-bit words.
+ */
+
+u32 bcom_gen_bd_tx_task[] = {
+	/* header */
+	0x4243544b,
+	0x0f040609,
+	0x00000000,
+	0x00000000,
+
+	/* Task descriptors */
+	0x800220e3, /* LCD: idx0 = var0, idx1 = var4; idx1 <= var3; idx0 += inc4, idx1 += inc3 */
+	0x13e01010, /*   DRD1A: var4 = var2; FN=0 MORE init=31 WS=0 RS=0 */
+	0xb8808264, /*   LCD: idx2 = *idx1, idx3 = var1; idx2 < var9; idx2 += inc4, idx3 += inc4 */
+	0x10001308, /*     DRD1A: var4 = idx1; FN=0 MORE init=0 WS=0 RS=0 */
+	0x60140002, /*     DRD2A: EU0=0 EU1=0 EU2=0 EU3=2 EXT init=0 WS=2 RS=2 */
+	0x0cccfcca, /*     DRD2B1: *idx3 = EU3(); EU3(*idx3,var10)  */
+	0xd9190300, /*   LCDEXT: idx2 = idx2; idx2 > var12; idx2 += inc0 */
+	0xb8c5e009, /*   LCD: idx3 = *(idx1 + var00000015); ; idx3 += inc1 */
+	0x03fec398, /*     DRD1A: *idx0 = *idx3; FN=0 init=31 WS=3 RS=3 */
+	0x9919826a, /*   LCD: idx2 = idx2, idx3 = idx3; idx2 > var9; idx2 += inc5, idx3 += inc2 */
+	0x0feac398, /*     DRD1A: *idx0 = *idx3; FN=0 TFD INT init=31 WS=1 RS=1 */
+	0x99190036, /*   LCD: idx2 = idx2; idx2 once var0; idx2 += inc6 */
+	0x60000005, /*     DRD2A: EU0=0 EU1=0 EU2=0 EU3=5 EXT init=0 WS=0 RS=0 */
+	0x0c4cf889, /*     DRD2B1: *idx1 = EU3(); EU3(idx2,var9)  */
+	0x000001f8, /*   NOP */
+
+	/* VAR[9]-VAR[12] */
+	0x40000000,
+	0x7fff7fff,
+	0x00000000,
+	0x40000004,
+
+	/* INC[0]-INC[5] */
+	0x40000000,
+	0xe0000000,
+	0xe0000000,
+	0xa0000008,
+	0x20000000,
+	0x4000ffff,
+};
+