ioat3: hardware version 3.2 register / descriptor definitions
Dan Williams [Wed, 9 Sep 2009 00:42:54 +0000 (17:42 -0700)]
ioat3.2 adds raid5 and raid6 offload capabilities.

Signed-off-by: Tom Picard <tom.s.picard@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/dma/ioat/dma.h
drivers/dma/ioat/dma_v2.h
drivers/dma/ioat/hw.h
drivers/dma/ioat/registers.h

index d9d6a7e..0d94e78 100644 (file)
@@ -155,7 +155,7 @@ ioat_is_complete(struct dma_chan *c, dma_cookie_t cookie,
 
 /**
  * struct ioat_desc_sw - wrapper around hardware descriptor
- * @hw: hardware DMA descriptor
+ * @hw: hardware DMA descriptor (for memcpy)
  * @node: this descriptor will either be on the free list,
  *     or attached to a transaction list (async_tx.tx_list)
  * @txd: the generic software descriptor for all engines
index 9baa3d6..ed4bb82 100644 (file)
@@ -114,8 +114,32 @@ static inline u16 ioat2_xferlen_to_descs(struct ioat2_dma_chan *ioat, size_t len
        return num_descs;
 }
 
+/**
+ * struct ioat_ring_ent - wrapper around hardware descriptor
+ * @hw: hardware DMA descriptor (for memcpy)
+ * @fill: hardware fill descriptor
+ * @xor: hardware xor descriptor
+ * @xor_ex: hardware xor extension descriptor
+ * @pq: hardware pq descriptor
+ * @pq_ex: hardware pq extension descriptor
+ * @pqu: hardware pq update descriptor
+ * @raw: hardware raw (un-typed) descriptor
+ * @txd: the generic software descriptor for all engines
+ * @len: total transaction length for unmap
+ * @id: identifier for debug
+ */
+
 struct ioat_ring_ent {
-       struct ioat_dma_descriptor *hw;
+       union {
+               struct ioat_dma_descriptor *hw;
+               struct ioat_fill_descriptor *fill;
+               struct ioat_xor_descriptor *xor;
+               struct ioat_xor_ext_descriptor *xor_ex;
+               struct ioat_pq_descriptor *pq;
+               struct ioat_pq_ext_descriptor *pq_ex;
+               struct ioat_pq_update_descriptor *pqu;
+               struct ioat_raw_descriptor *raw;
+       };
        struct dma_async_tx_descriptor txd;
        size_t len;
        #ifdef DEBUG
index 7481fb1..99afb12 100644 (file)
@@ -37,6 +37,7 @@
 #define IOAT_VER_1_2            0x12    /* Version 1.2 */
 #define IOAT_VER_2_0            0x20    /* Version 2.0 */
 #define IOAT_VER_3_0            0x30    /* Version 3.0 */
+#define IOAT_VER_3_2            0x32    /* Version 3.2 */
 
 struct ioat_dma_descriptor {
        uint32_t        size;
@@ -55,6 +56,7 @@ struct ioat_dma_descriptor {
                        unsigned int dest_dca:1;
                        unsigned int hint:1;
                        unsigned int rsvd2:13;
+                       #define IOAT_OP_COPY 0x00
                        unsigned int op:8;
                } ctl_f;
        };
@@ -70,4 +72,144 @@ struct ioat_dma_descriptor {
        };
        uint64_t        user2;
 };
+
+struct ioat_fill_descriptor {
+       uint32_t        size;
+       union {
+               uint32_t ctl;
+               struct {
+                       unsigned int int_en:1;
+                       unsigned int rsvd:1;
+                       unsigned int dest_snoop_dis:1;
+                       unsigned int compl_write:1;
+                       unsigned int fence:1;
+                       unsigned int rsvd2:2;
+                       unsigned int dest_brk:1;
+                       unsigned int bundle:1;
+                       unsigned int rsvd4:15;
+                       #define IOAT_OP_FILL 0x01
+                       unsigned int op:8;
+               } ctl_f;
+       };
+       uint64_t        src_data;
+       uint64_t        dst_addr;
+       uint64_t        next;
+       uint64_t        rsv1;
+       uint64_t        next_dst_addr;
+       uint64_t        user1;
+       uint64_t        user2;
+};
+
+struct ioat_xor_descriptor {
+       uint32_t        size;
+       union {
+               uint32_t ctl;
+               struct {
+                       unsigned int int_en:1;
+                       unsigned int src_snoop_dis:1;
+                       unsigned int dest_snoop_dis:1;
+                       unsigned int compl_write:1;
+                       unsigned int fence:1;
+                       unsigned int src_cnt:3;
+                       unsigned int bundle:1;
+                       unsigned int dest_dca:1;
+                       unsigned int hint:1;
+                       unsigned int rsvd:13;
+                       #define IOAT_OP_XOR 0x87
+                       #define IOAT_OP_XOR_VAL 0x88
+                       unsigned int op:8;
+               } ctl_f;
+       };
+       uint64_t        src_addr;
+       uint64_t        dst_addr;
+       uint64_t        next;
+       uint64_t        src_addr2;
+       uint64_t        src_addr3;
+       uint64_t        src_addr4;
+       uint64_t        src_addr5;
+};
+
+struct ioat_xor_ext_descriptor {
+       uint64_t        src_addr6;
+       uint64_t        src_addr7;
+       uint64_t        src_addr8;
+       uint64_t        next;
+       uint64_t        rsvd[4];
+};
+
+struct ioat_pq_descriptor {
+       uint32_t        size;
+       union {
+               uint32_t ctl;
+               struct {
+                       unsigned int int_en:1;
+                       unsigned int src_snoop_dis:1;
+                       unsigned int dest_snoop_dis:1;
+                       unsigned int compl_write:1;
+                       unsigned int fence:1;
+                       unsigned int src_cnt:3;
+                       unsigned int bundle:1;
+                       unsigned int dest_dca:1;
+                       unsigned int hint:1;
+                       unsigned int p_disable:1;
+                       unsigned int q_disable:1;
+                       unsigned int rsvd:11;
+                       #define IOAT_OP_PQ 0x89
+                       #define IOAT_OP_PQ_VAL 0x8a
+                       unsigned int op:8;
+               } ctl_f;
+       };
+       uint64_t        src_addr;
+       uint64_t        p_addr;
+       uint64_t        next;
+       uint64_t        src_addr2;
+       uint64_t        src_addr3;
+       uint8_t         coef[8];
+       uint64_t        q_addr;
+};
+
+struct ioat_pq_ext_descriptor {
+       uint64_t        src_addr4;
+       uint64_t        src_addr5;
+       uint64_t        src_addr6;
+       uint64_t        next;
+       uint64_t        src_addr7;
+       uint64_t        src_addr8;
+       uint64_t        rsvd[2];
+};
+
+struct ioat_pq_update_descriptor {
+       uint32_t        size;
+       union {
+               uint32_t ctl;
+               struct {
+                       unsigned int int_en:1;
+                       unsigned int src_snoop_dis:1;
+                       unsigned int dest_snoop_dis:1;
+                       unsigned int compl_write:1;
+                       unsigned int fence:1;
+                       unsigned int src_cnt:3;
+                       unsigned int bundle:1;
+                       unsigned int dest_dca:1;
+                       unsigned int hint:1;
+                       unsigned int p_disable:1;
+                       unsigned int q_disable:1;
+                       unsigned int rsvd:3;
+                       unsigned int coef:8;
+                       #define IOAT_OP_PQ_UP 0x8b
+                       unsigned int op:8;
+               } ctl_f;
+       };
+       uint64_t        src_addr;
+       uint64_t        p_addr;
+       uint64_t        next;
+       uint64_t        src_addr2;
+       uint64_t        p_src;
+       uint64_t        q_src;
+       uint64_t        q_addr;
+};
+
+struct ioat_raw_descriptor {
+       uint64_t        field[8];
+};
 #endif
index e4334a1..85d04b8 100644 (file)
 
 #define IOAT_DEVICE_STATUS_OFFSET              0x0E    /* 16-bit */
 #define IOAT_DEVICE_STATUS_DEGRADED_MODE       0x0001
+#define IOAT_DEVICE_MMIO_RESTRICTED            0x0002
+#define IOAT_DEVICE_MEMORY_BYPASS              0x0004
+#define IOAT_DEVICE_ADDRESS_REMAPPING          0x0008
+
+#define IOAT_DMA_CAP_OFFSET                    0x10    /* 32-bit */
+#define IOAT_CAP_PAGE_BREAK                    0x00000001
+#define IOAT_CAP_CRC                           0x00000002
+#define IOAT_CAP_SKIP_MARKER                   0x00000004
+#define IOAT_CAP_DCA                           0x00000010
+#define IOAT_CAP_CRC_MOVE                      0x00000020
+#define IOAT_CAP_FILL_BLOCK                    0x00000040
+#define IOAT_CAP_APIC                          0x00000080
+#define IOAT_CAP_XOR                           0x00000100
+#define IOAT_CAP_PQ                            0x00000200
 
 #define IOAT_CHANNEL_MMIO_SIZE                 0x80    /* Each Channel MMIO space is this size */
 
 #define IOAT_CHANERR_INT_CONFIGURATION_ERR     0x2000
 #define IOAT_CHANERR_SOFT_ERR                  0x4000
 #define IOAT_CHANERR_UNAFFILIATED_ERR          0x8000
+#define IOAT_CHANERR_XOR_P_OR_CRC_ERR          0x10000
+#define IOAT_CHANERR_XOR_Q_ERR                 0x20000
+#define IOAT_CHANERR_DESCRIPTOR_COUNT_ERR      0x40000
 
 #define IOAT_CHANERR_MASK_OFFSET               0x2C    /* 32-bit Channel Error Register */