351 lines
9.9 KiB
C
351 lines
9.9 KiB
C
|
/*
|
||
|
|
* Private header for the MPC52xx processor BestComm driver
|
||
|
|
*
|
||
|
|
* By private, we mean that driver should not use it directly. It's meant
|
||
|
|
* to be used by the BestComm engine driver itself and by the intermediate
|
||
|
|
* layer between the core and the drivers.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2006 Sylvain Munaut <tnt@246tNt.com>
|
||
|
|
* Copyright (C) 2005 Varma Electronics Oy,
|
||
|
|
* ( by Andrey Volkov <avolkov@varma-el.com> )
|
||
|
|
* Copyright (C) 2003-2004 MontaVista, Software, Inc.
|
||
|
|
* ( by Dale Farnsworth <dfarnsworth@mvista.com> )
|
||
|
|
*
|
||
|
|
* This file is licensed under the terms of the GNU General Public License
|
||
|
|
* version 2. This program is licensed "as is" without any warranty of any
|
||
|
|
* kind, whether express or implied.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __BESTCOMM_PRIV_H__
|
||
|
|
#define __BESTCOMM_PRIV_H__
|
||
|
|
|
||
|
|
#include <linux/spinlock.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/mpc52xx.h>
|
||
|
|
|
||
|
|
#include "sram.h"
|
||
|
|
|
||
|
|
|
||
|
|
/* ======================================================================== */
|
||
|
|
/* Engine related stuff */
|
||
|
|
/* ======================================================================== */
|
||
|
|
|
||
|
|
/* Zones sizes and needed alignments */
|
||
|
|
#define BCOM_MAX_TASKS 16
|
||
|
|
#define BCOM_MAX_VAR 24
|
||
|
|
#define BCOM_MAX_INC 8
|
||
|
|
#define BCOM_MAX_FDT 64
|
||
|
|
#define BCOM_MAX_CTX 20
|
||
|
|
#define BCOM_CTX_SIZE (BCOM_MAX_CTX * sizeof(u32))
|
||
|
|
#define BCOM_CTX_ALIGN 0x100
|
||
|
|
#define BCOM_VAR_SIZE (BCOM_MAX_VAR * sizeof(u32))
|
||
|
|
#define BCOM_INC_SIZE (BCOM_MAX_INC * sizeof(u32))
|
||
|
|
#define BCOM_VAR_ALIGN 0x80
|
||
|
|
#define BCOM_FDT_SIZE (BCOM_MAX_FDT * sizeof(u32))
|
||
|
|
#define BCOM_FDT_ALIGN 0x100
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct bcom_tdt - Task Descriptor Table Entry
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
struct bcom_tdt {
|
||
|
|
u32 start;
|
||
|
|
u32 stop;
|
||
|
|
u32 var;
|
||
|
|
u32 fdt;
|
||
|
|
u32 exec_status; /* used internally by BestComm engine */
|
||
|
|
u32 mvtp; /* used internally by BestComm engine */
|
||
|
|
u32 context;
|
||
|
|
u32 litbase;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct bcom_engine
|
||
|
|
*
|
||
|
|
* This holds all info needed globaly to handle the engine
|
||
|
|
*/
|
||
|
|
struct bcom_engine {
|
||
|
|
struct device_node *ofnode;
|
||
|
|
struct mpc52xx_sdma __iomem *regs;
|
||
|
|
phys_addr_t regs_base;
|
||
|
|
|
||
|
|
struct bcom_tdt *tdt;
|
||
|
|
u32 *ctx;
|
||
|
|
u32 *var;
|
||
|
|
u32 *fdt;
|
||
|
|
|
||
|
|
spinlock_t lock;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern struct bcom_engine *bcom_eng;
|
||
|
|
|
||
|
|
|
||
|
|
/* ======================================================================== */
|
||
|
|
/* Tasks related stuff */
|
||
|
|
/* ======================================================================== */
|
||
|
|
|
||
|
|
/* Tasks image header */
|
||
|
|
#define BCOM_TASK_MAGIC 0x4243544B /* 'BCTK' */
|
||
|
|
|
||
|
|
struct bcom_task_header {
|
||
|
|
u32 magic;
|
||
|
|
u8 desc_size; /* the size fields */
|
||
|
|
u8 var_size; /* are given in number */
|
||
|
|
u8 inc_size; /* of 32-bits words */
|
||
|
|
u8 first_var;
|
||
|
|
u8 reserved[8];
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Descriptors stucture & co */
|
||
|
|
#define BCOM_DESC_NOP 0x000001f8
|
||
|
|
#define BCOM_LCD_MASK 0x80000000
|
||
|
|
#define BCOM_DRD_EXTENDED 0x40000000
|
||
|
|
#define BCOM_DRD_INITIATOR_SHIFT 21
|
||
|
|
|
||
|
|
/* Tasks pragma */
|
||
|
|
#define BCOM_PRAGMA_BIT_RSV 7 /* reserved pragma bit */
|
||
|
|
#define BCOM_PRAGMA_BIT_PRECISE_INC 6 /* increment 0=when possible, */
|
||
|
|
/* 1=iter end */
|
||
|
|
#define BCOM_PRAGMA_BIT_RST_ERROR_NO 5 /* don't reset errors on */
|
||
|
|
/* task enable */
|
||
|
|
#define BCOM_PRAGMA_BIT_PACK 4 /* pack data enable */
|
||
|
|
#define BCOM_PRAGMA_BIT_INTEGER 3 /* data alignment */
|
||
|
|
/* 0=frac(msb), 1=int(lsb) */
|
||
|
|
#define BCOM_PRAGMA_BIT_SPECREAD 2 /* XLB speculative read */
|
||
|
|
#define BCOM_PRAGMA_BIT_CW 1 /* write line buffer enable */
|
||
|
|
#define BCOM_PRAGMA_BIT_RL 0 /* read line buffer enable */
|
||
|
|
|
||
|
|
/* Looks like XLB speculative read generates XLB errors when a buffer
|
||
|
|
* is at the end of the physical memory. i.e. when accessing the
|
||
|
|
* lasts words, the engine tries to prefetch the next but there is no
|
||
|
|
* next ...
|
||
|
|
*/
|
||
|
|
#define BCOM_STD_PRAGMA ((0 << BCOM_PRAGMA_BIT_RSV) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_PRECISE_INC) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_RST_ERROR_NO) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_PACK) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_INTEGER) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_SPECREAD) | \
|
||
|
|
(1 << BCOM_PRAGMA_BIT_CW) | \
|
||
|
|
(1 << BCOM_PRAGMA_BIT_RL))
|
||
|
|
|
||
|
|
#define BCOM_PCI_PRAGMA ((0 << BCOM_PRAGMA_BIT_RSV) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_PRECISE_INC) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_RST_ERROR_NO) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_PACK) | \
|
||
|
|
(1 << BCOM_PRAGMA_BIT_INTEGER) | \
|
||
|
|
(0 << BCOM_PRAGMA_BIT_SPECREAD) | \
|
||
|
|
(1 << BCOM_PRAGMA_BIT_CW) | \
|
||
|
|
(1 << BCOM_PRAGMA_BIT_RL))
|
||
|
|
|
||
|
|
#define BCOM_ATA_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_CRC16_DP_0_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_CRC16_DP_1_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_FEC_RX_BD_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_FEC_TX_BD_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_DP_0_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_DP_1_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_DP_2_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_DP_3_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_DP_BD_0_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_DP_BD_1_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_RX_BD_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_TX_BD_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_GEN_LPC_PRAGMA BCOM_STD_PRAGMA
|
||
|
|
#define BCOM_PCI_RX_PRAGMA BCOM_PCI_PRAGMA
|
||
|
|
#define BCOM_PCI_TX_PRAGMA BCOM_PCI_PRAGMA
|
||
|
|
|
||
|
|
/* Initiators number */
|
||
|
|
#define BCOM_INITIATOR_ALWAYS 0
|
||
|
|
#define BCOM_INITIATOR_SCTMR_0 1
|
||
|
|
#define BCOM_INITIATOR_SCTMR_1 2
|
||
|
|
#define BCOM_INITIATOR_FEC_RX 3
|
||
|
|
#define BCOM_INITIATOR_FEC_TX 4
|
||
|
|
#define BCOM_INITIATOR_ATA_RX 5
|
||
|
|
#define BCOM_INITIATOR_ATA_TX 6
|
||
|
|
#define BCOM_INITIATOR_SCPCI_RX 7
|
||
|
|
#define BCOM_INITIATOR_SCPCI_TX 8
|
||
|
|
#define BCOM_INITIATOR_PSC3_RX 9
|
||
|
|
#define BCOM_INITIATOR_PSC3_TX 10
|
||
|
|
#define BCOM_INITIATOR_PSC2_RX 11
|
||
|
|
#define BCOM_INITIATOR_PSC2_TX 12
|
||
|
|
#define BCOM_INITIATOR_PSC1_RX 13
|
||
|
|
#define BCOM_INITIATOR_PSC1_TX 14
|
||
|
|
#define BCOM_INITIATOR_SCTMR_2 15
|
||
|
|
#define BCOM_INITIATOR_SCLPC 16
|
||
|
|
#define BCOM_INITIATOR_PSC5_RX 17
|
||
|
|
#define BCOM_INITIATOR_PSC5_TX 18
|
||
|
|
#define BCOM_INITIATOR_PSC4_RX 19
|
||
|
|
#define BCOM_INITIATOR_PSC4_TX 20
|
||
|
|
#define BCOM_INITIATOR_I2C2_RX 21
|
||
|
|
#define BCOM_INITIATOR_I2C2_TX 22
|
||
|
|
#define BCOM_INITIATOR_I2C1_RX 23
|
||
|
|
#define BCOM_INITIATOR_I2C1_TX 24
|
||
|
|
#define BCOM_INITIATOR_PSC6_RX 25
|
||
|
|
#define BCOM_INITIATOR_PSC6_TX 26
|
||
|
|
#define BCOM_INITIATOR_IRDA_RX 25
|
||
|
|
#define BCOM_INITIATOR_IRDA_TX 26
|
||
|
|
#define BCOM_INITIATOR_SCTMR_3 27
|
||
|
|
#define BCOM_INITIATOR_SCTMR_4 28
|
||
|
|
#define BCOM_INITIATOR_SCTMR_5 29
|
||
|
|
#define BCOM_INITIATOR_SCTMR_6 30
|
||
|
|
#define BCOM_INITIATOR_SCTMR_7 31
|
||
|
|
|
||
|
|
/* Initiators priorities */
|
||
|
|
#define BCOM_IPR_ALWAYS 7
|
||
|
|
#define BCOM_IPR_SCTMR_0 2
|
||
|
|
#define BCOM_IPR_SCTMR_1 2
|
||
|
|
#define BCOM_IPR_FEC_RX 6
|
||
|
|
#define BCOM_IPR_FEC_TX 5
|
||
|
|
#define BCOM_IPR_ATA_RX 7
|
||
|
|
#define BCOM_IPR_ATA_TX 7
|
||
|
|
#define BCOM_IPR_SCPCI_RX 2
|
||
|
|
#define BCOM_IPR_SCPCI_TX 2
|
||
|
|
#define BCOM_IPR_PSC3_RX 2
|
||
|
|
#define BCOM_IPR_PSC3_TX 2
|
||
|
|
#define BCOM_IPR_PSC2_RX 2
|
||
|
|
#define BCOM_IPR_PSC2_TX 2
|
||
|
|
#define BCOM_IPR_PSC1_RX 2
|
||
|
|
#define BCOM_IPR_PSC1_TX 2
|
||
|
|
#define BCOM_IPR_SCTMR_2 2
|
||
|
|
#define BCOM_IPR_SCLPC 2
|
||
|
|
#define BCOM_IPR_PSC5_RX 2
|
||
|
|
#define BCOM_IPR_PSC5_TX 2
|
||
|
|
#define BCOM_IPR_PSC4_RX 2
|
||
|
|
#define BCOM_IPR_PSC4_TX 2
|
||
|
|
#define BCOM_IPR_I2C2_RX 2
|
||
|
|
#define BCOM_IPR_I2C2_TX 2
|
||
|
|
#define BCOM_IPR_I2C1_RX 2
|
||
|
|
#define BCOM_IPR_I2C1_TX 2
|
||
|
|
#define BCOM_IPR_PSC6_RX 2
|
||
|
|
#define BCOM_IPR_PSC6_TX 2
|
||
|
|
#define BCOM_IPR_IRDA_RX 2
|
||
|
|
#define BCOM_IPR_IRDA_TX 2
|
||
|
|
#define BCOM_IPR_SCTMR_3 2
|
||
|
|
#define BCOM_IPR_SCTMR_4 2
|
||
|
|
#define BCOM_IPR_SCTMR_5 2
|
||
|
|
#define BCOM_IPR_SCTMR_6 2
|
||
|
|
#define BCOM_IPR_SCTMR_7 2
|
||
|
|
|
||
|
|
|
||
|
|
/* ======================================================================== */
|
||
|
|
/* API */
|
||
|
|
/* ======================================================================== */
|
||
|
|
|
||
|
|
extern struct bcom_task *bcom_task_alloc(int bd_count, int bd_size, int priv_size);
|
||
|
|
extern void bcom_task_free(struct bcom_task *tsk);
|
||
|
|
extern int bcom_load_image(int task, u32 *task_image);
|
||
|
|
extern void bcom_set_initiator(int task, int initiator);
|
||
|
|
|
||
|
|
|
||
|
|
#define TASK_ENABLE 0x8000
|
||
|
|
|
||
|
|
/**
|
||
|
|
* bcom_disable_prefetch - Hook to disable bus prefetching
|
||
|
|
*
|
||
|
|
* ATA DMA and the original MPC5200 need this due to silicon bugs. At the
|
||
|
|
* moment disabling prefetch is a one-way street. There is no mechanism
|
||
|
|
* in place to turn prefetch back on after it has been disabled. There is
|
||
|
|
* no reason it couldn't be done, it would just be more complex to implement.
|
||
|
|
*/
|
||
|
|
static inline void bcom_disable_prefetch(void)
|
||
|
|
{
|
||
|
|
u16 regval;
|
||
|
|
|
||
|
|
regval = in_be16(&bcom_eng->regs->PtdCntrl);
|
||
|
|
out_be16(&bcom_eng->regs->PtdCntrl, regval | 1);
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
bcom_enable_task(int task)
|
||
|
|
{
|
||
|
|
u16 reg;
|
||
|
|
reg = in_be16(&bcom_eng->regs->tcr[task]);
|
||
|
|
out_be16(&bcom_eng->regs->tcr[task], reg | TASK_ENABLE);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
bcom_disable_task(int task)
|
||
|
|
{
|
||
|
|
u16 reg = in_be16(&bcom_eng->regs->tcr[task]);
|
||
|
|
out_be16(&bcom_eng->regs->tcr[task], reg & ~TASK_ENABLE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static inline u32 *
|
||
|
|
bcom_task_desc(int task)
|
||
|
|
{
|
||
|
|
return bcom_sram_pa2va(bcom_eng->tdt[task].start);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int
|
||
|
|
bcom_task_num_descs(int task)
|
||
|
|
{
|
||
|
|
return (bcom_eng->tdt[task].stop - bcom_eng->tdt[task].start)/sizeof(u32) + 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline u32 *
|
||
|
|
bcom_task_var(int task)
|
||
|
|
{
|
||
|
|
return bcom_sram_pa2va(bcom_eng->tdt[task].var);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline u32 *
|
||
|
|
bcom_task_inc(int task)
|
||
|
|
{
|
||
|
|
return &bcom_task_var(task)[BCOM_MAX_VAR];
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static inline int
|
||
|
|
bcom_drd_is_extended(u32 desc)
|
||
|
|
{
|
||
|
|
return (desc) & BCOM_DRD_EXTENDED;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int
|
||
|
|
bcom_desc_is_drd(u32 desc)
|
||
|
|
{
|
||
|
|
return !(desc & BCOM_LCD_MASK) && desc != BCOM_DESC_NOP;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int
|
||
|
|
bcom_desc_initiator(u32 desc)
|
||
|
|
{
|
||
|
|
return (desc >> BCOM_DRD_INITIATOR_SHIFT) & 0x1f;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
bcom_set_desc_initiator(u32 *desc, int initiator)
|
||
|
|
{
|
||
|
|
*desc = (*desc & ~(0x1f << BCOM_DRD_INITIATOR_SHIFT)) |
|
||
|
|
((initiator & 0x1f) << BCOM_DRD_INITIATOR_SHIFT);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
bcom_set_task_pragma(int task, int pragma)
|
||
|
|
{
|
||
|
|
u32 *fdt = &bcom_eng->tdt[task].fdt;
|
||
|
|
*fdt = (*fdt & ~0xff) | pragma;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
bcom_set_task_auto_start(int task, int next_task)
|
||
|
|
{
|
||
|
|
u16 __iomem *tcr = &bcom_eng->regs->tcr[task];
|
||
|
|
out_be16(tcr, (in_be16(tcr) & ~0xff) | 0x00c0 | next_task);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
bcom_set_tcr_initiator(int task, int initiator)
|
||
|
|
{
|
||
|
|
u16 __iomem *tcr = &bcom_eng->regs->tcr[task];
|
||
|
|
out_be16(tcr, (in_be16(tcr) & ~0x1f00) | ((initiator & 0x1f) << 8));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* __BESTCOMM_PRIV_H__ */
|
||
|
|
|