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/** @name Buffer Descriptor offsets
* USR fields are defined by higher level IP. For example, checksum offload
* setup for EMAC type devices. The 1st 8 words are utilized by hardware. Any
* words after the 8th are for software use only.
* @{
*/
#define DMA_BD_BUFL_STATUS_OFFSET 0x00 /**< Buffer length + status */
#define DMA_BD_USRL_OFFSET 0x04 /**< User logic specific - LSBytes */
#define DMA_BD_USRH_OFFSET 0x08 /**< User logic specific - MSBytes */
#define DMA_BD_CARDA_OFFSET 0x0C /**< Card address */
#define DMA_BD_BUFL_CTRL_OFFSET 0x10 /**< Buffer length + control */
#define DMA_BD_BUFAL_OFFSET 0x14 /**< Buffer address LSBytes */
#define DMA_BD_BUFAH_OFFSET 0x18 /**< Buffer address MSBytes */
#define DMA_BD_NDESC_OFFSET 0x1C /**< Next descriptor pointer */
/* Bit masks for some BD fields */
#define DMA_BD_BUFL_MASK 0x000FFFFF /**< Byte count */
#define DMA_BD_STATUS_MASK 0xFF000000 /**< Status Flags */
#define DMA_BD_CTRL_MASK 0xFF000000 /**< Control Flags */
/* Bit masks for BD control field */
#define DMA_BD_INT_ERROR_MASK 0x02000000 /**< Intr on error */
#define DMA_BD_INT_COMP_MASK 0x01000000 /**< Intr on BD completion */
/* Bit masks for BD status field */
#define DMA_BD_SOP_MASK 0x80000000 /**< Start of packet */
#define DMA_BD_EOP_MASK 0x40000000 /**< End of packet */
#define DMA_BD_ERROR_MASK 0x10000000 /**< BD had error */
#define DMA_BD_USER_HIGH_ZERO_MASK 0x08000000 /**< User High Status zero */
#define DMA_BD_USER_LOW_ZERO_MASK 0x04000000 /**< User Low Status zero */
#define DMA_BD_SHORT_MASK 0x02000000 /**< BD not fully used */
#define DMA_BD_COMP_MASK 0x01000000 /**< BD completed */
#define DMA_BD_MINIMUM_ALIGNMENT 0x40 /**< Minimum byte alignment */
/* Common DMA registers */
#define REG_DMA_CTRL_STATUS 0x4000 /**< DMA Common Ctrl & Status */
/* These engine registers are applicable to both S2C and C2S channels.
* Register field mask and shift definitions are later in this file.
*/
#define REG_DMA_ENG_CAP 0x00000000 /**< DMA Engine Capabilities */
#define REG_DMA_ENG_CTRL_STATUS 0x00000004 /**< DMA Engine Control */
#define REG_DMA_ENG_NEXT_BD 0x00000008 /**< HW Next desc pointer */
#define REG_SW_NEXT_BD 0x0000000C /**< SW Next desc pointer */
#define REG_DMA_ENG_LAST_BD 0x00000010 /**< HW Last completed pointer */
#define REG_DMA_ENG_ACTIVE_TIME 0x00000014 /**< DMA Engine Active Time */
#define REG_DMA_ENG_WAIT_TIME 0x00000018 /**< DMA Engine Wait Time */
#define REG_DMA_ENG_COMP_BYTES 0x0000001C /**< DMA Engine Completed Bytes */
/* Register masks. The following constants define bit locations of various
* control bits in the registers. For further information on the meaning of
* the various bit masks, refer to the hardware spec.
*
* Masks have been written assuming HW bits 0-31 correspond to SW bits 0-31
*/
/** @name Bitmasks of REG_DMA_CTRL_STATUS register.
* @{
*/
#define DMA_INT_ENABLE 0x00000001 /**< Enable global interrupts */
#define DMA_INT_DISABLE 0x00000000 /**< Disable interrupts */
#define DMA_INT_ACTIVE_MASK 0x00000002 /**< Interrupt active? */
#define DMA_INT_PENDING_MASK 0x00000004 /**< Engine interrupt pending */
#define DMA_INT_MSI_MODE 0x00000008 /**< MSI or Legacy mode? */
#define DMA_USER_INT_ENABLE 0x00000010 /**< Enable user interrupts */
#define DMA_USER_INT_ACTIVE_MASK 0x00000020 /**< Int - user interrupt */
#define DMA_USER_INT_ACK 0x00000020 /**< Acknowledge */
#define DMA_MPS_USED 0x00000700 /**< MPS Used */
#define DMA_MRRS_USED 0x00007000 /**< MRRS Used */
#define DMA_S2C_ENG_INT_VAL 0x00FF0000 /**< IRQ value of 1st 8 S2Cs */
#define DMA_C2S_ENG_INT_VAL 0xFF000000 /**< IRQ value of 1st 8 C2Ss */
/** @name Bitmasks of REG_DMA_ENG_CAP register.
* @{
*/
/* DMA engine characteristics */
#define DMA_ENG_PRESENT_MASK 0x00000001 /**< DMA engine present? */
#define DMA_ENG_DIRECTION_MASK 0x00000002 /**< DMA engine direction */
#define DMA_ENG_C2S 0x00000002 /**< DMA engine - C2S */
#define DMA_ENG_S2C 0x00000000 /**< DMA engine - S2C */
#define DMA_ENG_TYPE_MASK 0x00000030 /**< DMA engine type */
#define DMA_ENG_BLOCK 0x00000000 /**< DMA engine - Block type */
#define DMA_ENG_PACKET 0x00000010 /**< DMA engine - Packet type */
#define DMA_ENG_NUMBER 0x0000FF00 /**< DMA engine number */
#define DMA_ENG_BD_MAX_BC 0x3F000000 /**< DMA engine max buffer size */
/* Shift constants for selected masks */
#define DMA_ENG_NUMBER_SHIFT 8
#define DMA_ENG_BD_MAX_BC_SHIFT 24
/** @name Bitmasks of REG_DMA_ENG_CTRL_STATUS register.
* @{
*/
/* Interrupt activity and acknowledgement bits */
#define DMA_ENG_INT_ENABLE 0x00000001 /**< Enable interrupts */
#define DMA_ENG_INT_DISABLE 0x00000000 /**< Disable interrupts */
#define DMA_ENG_INT_ACTIVE_MASK 0x00000002 /**< Interrupt active? */
#define DMA_ENG_INT_ACK 0x00000002 /**< Interrupt ack */
#define DMA_ENG_INT_BDCOMP 0x00000004 /**< Int - BD completion */
#define DMA_ENG_INT_BDCOMP_ACK 0x00000004 /**< Acknowledge */
#define DMA_ENG_INT_ALERR 0x00000008 /**< Int - BD align error */
#define DMA_ENG_INT_ALERR_ACK 0x00000008 /**< Acknowledge */
#define DMA_ENG_INT_FETERR 0x00000010 /**< Int - BD fetch error */
#define DMA_ENG_INT_FETERR_ACK 0x00000010 /**< Acknowledge */
#define DMA_ENG_INT_ABORTERR 0x00000020 /**< Int - DMA abort error */
#define DMA_ENG_INT_ABORTERR_ACK 0x00000020 /**< Acknowledge */
#define DMA_ENG_INT_CHAINEND 0x00000080 /**< Int - BD chain ended */
#define DMA_ENG_INT_CHAINEND_ACK 0x00000080 /**< Acknowledge */
/* DMA engine control */
#define DMA_ENG_ENABLE_MASK 0x00000100 /**< DMA enabled? */
#define DMA_ENG_ENABLE 0x00000100 /**< Enable DMA */
#define DMA_ENG_DISABLE 0x00000000 /**< Disable DMA */
#define DMA_ENG_STATE_MASK 0x00000C00 /**< Current DMA state? */
#define DMA_ENG_RUNNING 0x00000400 /**< DMA running */
#define DMA_ENG_IDLE 0x00000000 /**< DMA idle */
#define DMA_ENG_WAITING 0x00000800 /**< DMA waiting */
#define DMA_ENG_STATE_WAITED 0x00001000 /**< DMA waited earlier */
#define DMA_ENG_WAITED_ACK 0x00001000 /**< Acknowledge */
#define DMA_ENG_USER_RESET 0x00004000 /**< Reset only user logic */
#define DMA_ENG_RESET 0x00008000 /**< Reset DMA engine + user */
#define DMA_ENG_ALLINT_MASK 0x000000BE /**< To get only int events */
#define DMA_ENGINE_PER_SIZE 0x100 /**< Separation between engine regs */
#define DMA_OFFSET 0 /**< Starting register offset */
/**< Size of DMA engine reg space */
#define DMA_SIZE (MAX_DMA_ENGINES * DMA_ENGINE_PER_SIZE)
#define TX_CONFIG_ADDRESS 0x9108 /* Reg for controlling TX data */
#define RX_CONFIG_ADDRESS 0x9100 /* Reg for controlling RX pkt generator */
#define PKT_SIZE_ADDRESS 0x9104 /* Reg for programming packet size */
#define STATUS_ADDRESS 0x910C /* Reg for checking TX pkt checker status */
/* Test start / stop conditions */
#define PKTCHKR 0x00000001 /* Enable TX packet checker */
#define PKTGENR 0x00000001 /* Enable RX packet generator */
#define CHKR_MISMATCH 0x00000001 /* TX checker reported data mismatch */
#define LOOPBACK 0x00000002 /* Enable TX data loopback onto RX */
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