iop3xx: surface the iop3xx DMA and AAU units to the iop-adma driver

Adds the platform device definitions and the architecture specific support
routines (i.e. register initialization and descriptor formats) for the
iop-adma driver.

Changelog:
* add support for > 1k zero sum buffer sizes
* added dma/aau platform devices to iq80321 and iq80332 setup
* fixed the calculation in iop_desc_is_aligned
* support xor buffer sizes larger than 16MB
* fix places where software descriptors are assumed to be contiguous, only
  hardware descriptors are contiguous for up to a PAGE_SIZE buffer size
* convert to async_tx
* add interrupt support
* add platform devices for 80219 boards
* do not call platform register macros in driver code
* remove switch() statements for compatible register offsets/layouts
* change over to bitmap based capabilities
* remove unnecessary ARM assembly statement
* checkpatch.pl fixes
* gpl v2 only correction
* phys move to dma_async_tx_descriptor

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 8 insertions, 60 deletions

diff --git a/include/asm-arm/hardware/iop3xx.h b/include/asm-arm/hardware/iop3xx.h
index 63feceb7ede5..81ca5d3e2bff 100644
--- a/include/asm-arm/hardware/iop3xx.h
+++ b/include/asm-arm/hardware/iop3xx.h
@@ -144,24 +144,9 @@ extern int init_atu;
 #define IOP3XX_IAR              (volatile u32 *)IOP3XX_REG_ADDR(0x0380)
 
 /* DMA Controller  */
-#define IOP3XX_DMA0_CCR         (volatile u32 *)IOP3XX_REG_ADDR(0x0400)
-#define IOP3XX_DMA0_CSR         (volatile u32 *)IOP3XX_REG_ADDR(0x0404)
-#define IOP3XX_DMA0_DAR         (volatile u32 *)IOP3XX_REG_ADDR(0x040c)
-#define IOP3XX_DMA0_NDAR        (volatile u32 *)IOP3XX_REG_ADDR(0x0410)
-#define IOP3XX_DMA0_PADR        (volatile u32 *)IOP3XX_REG_ADDR(0x0414)
-#define IOP3XX_DMA0_PUADR       (volatile u32 *)IOP3XX_REG_ADDR(0x0418)
-#define IOP3XX_DMA0_LADR        (volatile u32 *)IOP3XX_REG_ADDR(0x041c)
-#define IOP3XX_DMA0_BCR         (volatile u32 *)IOP3XX_REG_ADDR(0x0420)
-#define IOP3XX_DMA0_DCR         (volatile u32 *)IOP3XX_REG_ADDR(0x0424)
-#define IOP3XX_DMA1_CCR         (volatile u32 *)IOP3XX_REG_ADDR(0x0440)
-#define IOP3XX_DMA1_CSR         (volatile u32 *)IOP3XX_REG_ADDR(0x0444)
-#define IOP3XX_DMA1_DAR         (volatile u32 *)IOP3XX_REG_ADDR(0x044c)
-#define IOP3XX_DMA1_NDAR        (volatile u32 *)IOP3XX_REG_ADDR(0x0450)
-#define IOP3XX_DMA1_PADR        (volatile u32 *)IOP3XX_REG_ADDR(0x0454)
-#define IOP3XX_DMA1_PUADR       (volatile u32 *)IOP3XX_REG_ADDR(0x0458)
-#define IOP3XX_DMA1_LADR        (volatile u32 *)IOP3XX_REG_ADDR(0x045c)
-#define IOP3XX_DMA1_BCR         (volatile u32 *)IOP3XX_REG_ADDR(0x0460)
-#define IOP3XX_DMA1_DCR         (volatile u32 *)IOP3XX_REG_ADDR(0x0464)
+#define IOP3XX_DMA_PHYS_BASE(chan) (IOP3XX_PERIPHERAL_PHYS_BASE + \
+                                        (0x400 + (chan << 6)))
+#define IOP3XX_DMA_UPPER_PA(chan)  (IOP3XX_DMA_PHYS_BASE(chan) + 0x27)
 
 /* Peripheral bus interface  */
 #define IOP3XX_PBCR             (volatile u32 *)IOP3XX_REG_ADDR(0x0680)
@@ -210,48 +195,8 @@ extern int init_atu;
 #define IOP_TMR_RATIO_1_1  0x00
 
 /* Application accelerator unit  */
-#define IOP3XX_AAU_ACR          (volatile u32 *)IOP3XX_REG_ADDR(0x0800)
-#define IOP3XX_AAU_ASR          (volatile u32 *)IOP3XX_REG_ADDR(0x0804)
-#define IOP3XX_AAU_ADAR         (volatile u32 *)IOP3XX_REG_ADDR(0x0808)
-#define IOP3XX_AAU_ANDAR        (volatile u32 *)IOP3XX_REG_ADDR(0x080c)
-#define IOP3XX_AAU_SAR1         (volatile u32 *)IOP3XX_REG_ADDR(0x0810)
-#define IOP3XX_AAU_SAR2         (volatile u32 *)IOP3XX_REG_ADDR(0x0814)
-#define IOP3XX_AAU_SAR3         (volatile u32 *)IOP3XX_REG_ADDR(0x0818)
-#define IOP3XX_AAU_SAR4         (volatile u32 *)IOP3XX_REG_ADDR(0x081c)
-#define IOP3XX_AAU_DAR          (volatile u32 *)IOP3XX_REG_ADDR(0x0820)
-#define IOP3XX_AAU_ABCR         (volatile u32 *)IOP3XX_REG_ADDR(0x0824)
-#define IOP3XX_AAU_ADCR         (volatile u32 *)IOP3XX_REG_ADDR(0x0828)
-#define IOP3XX_AAU_SAR5         (volatile u32 *)IOP3XX_REG_ADDR(0x082c)
-#define IOP3XX_AAU_SAR6         (volatile u32 *)IOP3XX_REG_ADDR(0x0830)
-#define IOP3XX_AAU_SAR7         (volatile u32 *)IOP3XX_REG_ADDR(0x0834)
-#define IOP3XX_AAU_SAR8         (volatile u32 *)IOP3XX_REG_ADDR(0x0838)
-#define IOP3XX_AAU_EDCR0        (volatile u32 *)IOP3XX_REG_ADDR(0x083c)
-#define IOP3XX_AAU_SAR9         (volatile u32 *)IOP3XX_REG_ADDR(0x0840)
-#define IOP3XX_AAU_SAR10        (volatile u32 *)IOP3XX_REG_ADDR(0x0844)
-#define IOP3XX_AAU_SAR11        (volatile u32 *)IOP3XX_REG_ADDR(0x0848)
-#define IOP3XX_AAU_SAR12        (volatile u32 *)IOP3XX_REG_ADDR(0x084c)
-#define IOP3XX_AAU_SAR13        (volatile u32 *)IOP3XX_REG_ADDR(0x0850)
-#define IOP3XX_AAU_SAR14        (volatile u32 *)IOP3XX_REG_ADDR(0x0854)
-#define IOP3XX_AAU_SAR15        (volatile u32 *)IOP3XX_REG_ADDR(0x0858)
-#define IOP3XX_AAU_SAR16        (volatile u32 *)IOP3XX_REG_ADDR(0x085c)
-#define IOP3XX_AAU_EDCR1        (volatile u32 *)IOP3XX_REG_ADDR(0x0860)
-#define IOP3XX_AAU_SAR17        (volatile u32 *)IOP3XX_REG_ADDR(0x0864)
-#define IOP3XX_AAU_SAR18        (volatile u32 *)IOP3XX_REG_ADDR(0x0868)
-#define IOP3XX_AAU_SAR19        (volatile u32 *)IOP3XX_REG_ADDR(0x086c)
-#define IOP3XX_AAU_SAR20        (volatile u32 *)IOP3XX_REG_ADDR(0x0870)
-#define IOP3XX_AAU_SAR21        (volatile u32 *)IOP3XX_REG_ADDR(0x0874)
-#define IOP3XX_AAU_SAR22        (volatile u32 *)IOP3XX_REG_ADDR(0x0878)
-#define IOP3XX_AAU_SAR23        (volatile u32 *)IOP3XX_REG_ADDR(0x087c)
-#define IOP3XX_AAU_SAR24        (volatile u32 *)IOP3XX_REG_ADDR(0x0880)
-#define IOP3XX_AAU_EDCR2        (volatile u32 *)IOP3XX_REG_ADDR(0x0884)
-#define IOP3XX_AAU_SAR25        (volatile u32 *)IOP3XX_REG_ADDR(0x0888)
-#define IOP3XX_AAU_SAR26        (volatile u32 *)IOP3XX_REG_ADDR(0x088c)
-#define IOP3XX_AAU_SAR27        (volatile u32 *)IOP3XX_REG_ADDR(0x0890)
-#define IOP3XX_AAU_SAR28        (volatile u32 *)IOP3XX_REG_ADDR(0x0894)
-#define IOP3XX_AAU_SAR29        (volatile u32 *)IOP3XX_REG_ADDR(0x0898)
-#define IOP3XX_AAU_SAR30        (volatile u32 *)IOP3XX_REG_ADDR(0x089c)
-#define IOP3XX_AAU_SAR31        (volatile u32 *)IOP3XX_REG_ADDR(0x08a0)
-#define IOP3XX_AAU_SAR32        (volatile u32 *)IOP3XX_REG_ADDR(0x08a4)
+#define IOP3XX_AAU_PHYS_BASE (IOP3XX_PERIPHERAL_PHYS_BASE + 0x800)
+#define IOP3XX_AAU_UPPER_PA (IOP3XX_AAU_PHYS_BASE + 0xa7)
 
 /* I2C bus interface unit  */
 #define IOP3XX_ICR0             (volatile u32 *)IOP3XX_REG_ADDR(0x1680)
@@ -329,6 +274,9 @@ static inline void write_tisr(u32 val)
         asm volatile("mcr p6, 0, %0, c6, c1, 0" : : "r" (val));
 }
 
+extern struct platform_device iop3xx_dma_0_channel;
+extern struct platform_device iop3xx_dma_1_channel;
+extern struct platform_device iop3xx_aau_channel;
 extern struct platform_device iop3xx_i2c0_device;
 extern struct platform_device iop3xx_i2c1_device;