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1a4bb93f79
This driver for Freescale MPC512x LocalPlus Bus FIFO (called SCLPC in the Reference Manual) allows Direct Memory Access transfers between RAM and peripheral devices on LocalPlus Bus. Signed-off-by: Alexander Popov <alex.popov@linux.com> Signed-off-by: Anatolij Gustschin <agust@denx.de>
123 lines
3.8 KiB
C
123 lines
3.8 KiB
C
/*
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* MPC5121 Prototypes and definitions
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2.
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*/
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#ifndef __ASM_POWERPC_MPC5121_H__
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#define __ASM_POWERPC_MPC5121_H__
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/* MPC512x Reset module registers */
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struct mpc512x_reset_module {
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u32 rcwlr; /* Reset Configuration Word Low Register */
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u32 rcwhr; /* Reset Configuration Word High Register */
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u32 reserved1;
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u32 reserved2;
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u32 rsr; /* Reset Status Register */
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u32 rmr; /* Reset Mode Register */
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u32 rpr; /* Reset Protection Register */
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u32 rcr; /* Reset Control Register */
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u32 rcer; /* Reset Control Enable Register */
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};
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/*
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* Clock Control Module
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*/
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struct mpc512x_ccm {
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u32 spmr; /* System PLL Mode Register */
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u32 sccr1; /* System Clock Control Register 1 */
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u32 sccr2; /* System Clock Control Register 2 */
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u32 scfr1; /* System Clock Frequency Register 1 */
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u32 scfr2; /* System Clock Frequency Register 2 */
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u32 scfr2s; /* System Clock Frequency Shadow Register 2 */
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u32 bcr; /* Bread Crumb Register */
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u32 psc_ccr[12]; /* PSC Clock Control Registers */
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u32 spccr; /* SPDIF Clock Control Register */
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u32 cccr; /* CFM Clock Control Register */
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u32 dccr; /* DIU Clock Control Register */
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u32 mscan_ccr[4]; /* MSCAN Clock Control Registers */
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u32 out_ccr[4]; /* OUT CLK Configure Registers */
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u32 rsv0[2]; /* Reserved */
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u32 scfr3; /* System Clock Frequency Register 3 */
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u32 rsv1[3]; /* Reserved */
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u32 spll_lock_cnt; /* System PLL Lock Counter */
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u8 res[0x6c]; /* Reserved */
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};
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/*
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* LPC Module
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*/
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struct mpc512x_lpc {
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u32 cs_cfg[8]; /* CS config */
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u32 cs_ctrl; /* CS Control Register */
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u32 cs_status; /* CS Status Register */
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u32 burst_ctrl; /* CS Burst Control Register */
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u32 deadcycle_ctrl; /* CS Deadcycle Control Register */
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u32 holdcycle_ctrl; /* CS Holdcycle Control Register */
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u32 alt; /* Address Latch Timing Register */
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};
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int mpc512x_cs_config(unsigned int cs, u32 val);
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/*
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* SCLPC Module (LPB FIFO)
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*/
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struct mpc512x_lpbfifo {
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u32 pkt_size; /* SCLPC Packet Size Register */
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u32 start_addr; /* SCLPC Start Address Register */
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u32 ctrl; /* SCLPC Control Register */
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u32 enable; /* SCLPC Enable Register */
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u32 reserved1;
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u32 status; /* SCLPC Status Register */
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u32 bytes_done; /* SCLPC Bytes Done Register */
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u32 emb_sc; /* EMB Share Counter Register */
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u32 emb_pc; /* EMB Pause Control Register */
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u32 reserved2[7];
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u32 data_word; /* LPC RX/TX FIFO Data Word Register */
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u32 fifo_status; /* LPC RX/TX FIFO Status Register */
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u32 fifo_ctrl; /* LPC RX/TX FIFO Control Register */
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u32 fifo_alarm; /* LPC RX/TX FIFO Alarm Register */
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};
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#define MPC512X_SCLPC_START (1 << 31)
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#define MPC512X_SCLPC_CS(x) (((x) & 0x7) << 24)
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#define MPC512X_SCLPC_FLUSH (1 << 17)
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#define MPC512X_SCLPC_READ (1 << 16)
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#define MPC512X_SCLPC_DAI (1 << 8)
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#define MPC512X_SCLPC_BPT(x) ((x) & 0x3f)
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#define MPC512X_SCLPC_RESET (1 << 24)
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#define MPC512X_SCLPC_FIFO_RESET (1 << 16)
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#define MPC512X_SCLPC_ABORT_INT_ENABLE (1 << 9)
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#define MPC512X_SCLPC_NORM_INT_ENABLE (1 << 8)
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#define MPC512X_SCLPC_ENABLE (1 << 0)
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#define MPC512X_SCLPC_SUCCESS (1 << 24)
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#define MPC512X_SCLPC_FIFO_CTRL(x) (((x) & 0x7) << 24)
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#define MPC512X_SCLPC_FIFO_ALARM(x) ((x) & 0x3ff)
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enum lpb_dev_portsize {
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LPB_DEV_PORTSIZE_UNDEFINED = 0,
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LPB_DEV_PORTSIZE_1_BYTE = 1,
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LPB_DEV_PORTSIZE_2_BYTES = 2,
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LPB_DEV_PORTSIZE_4_BYTES = 4,
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LPB_DEV_PORTSIZE_8_BYTES = 8
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};
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enum mpc512x_lpbfifo_req_dir {
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MPC512X_LPBFIFO_REQ_DIR_READ,
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MPC512X_LPBFIFO_REQ_DIR_WRITE
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};
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struct mpc512x_lpbfifo_request {
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phys_addr_t dev_phys_addr; /* physical address of some device on LPB */
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void *ram_virt_addr; /* virtual address of some region in RAM */
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u32 size;
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enum lpb_dev_portsize portsize;
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enum mpc512x_lpbfifo_req_dir dir;
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void (*callback)(struct mpc512x_lpbfifo_request *);
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};
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int mpc512x_lpbfifo_submit(struct mpc512x_lpbfifo_request *req);
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#endif /* __ASM_POWERPC_MPC5121_H__ */
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