From 898cc81da3dd5bfa0f77f1791f76d3512b5e4dce Mon Sep 17 00:00:00 2001 From: Daniel Hellstrom Date: Mon, 25 Jan 2010 09:54:51 +0100 Subject: sparc: leon3: Reimplemented AMBA Plug&Play scanning routines. Signed-off-by: Daniel Hellstrom --- include/ambapp.h | 365 ++++++++++++++++++++++++++----------------------------- 1 file changed, 175 insertions(+), 190 deletions(-) (limited to 'include/ambapp.h') diff --git a/include/ambapp.h b/include/ambapp.h index 405637d..7643df5 100644 --- a/include/ambapp.h +++ b/include/ambapp.h @@ -3,8 +3,8 @@ * the APB bus, also freely available in GRLIB at * www.gaisler.com. * - * (C) Copyright 2007 - * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com. + * (C) Copyright 2009, 2015 + * Daniel Hellstrom, Cobham Gaisler, daniel@gaisler.com. * * SPDX-License-Identifier: GPL-2.0+ */ @@ -12,116 +12,136 @@ #ifndef __AMBAPP_H__ #define __AMBAPP_H__ -/* Default location of Plug&Play info - * normally 0xfffff000 for AHB masters - * and 0xfffff800 for AHB slaves. - * Normally no need to change this. - */ -#define LEON3_IO_AREA 0xfff00000 -#define LEON3_CONF_AREA 0xff000 -#define LEON3_AHB_SLAVE_CONF_AREA (1 << 11) - -/* Max devices this software will support */ -#define LEON3_AHB_MASTERS 16 -#define LEON3_AHB_SLAVES 16 -/*#define LEON3_APB_MASTERS 1*/ /* Number of APB buses that has Plug&Play */ -#define LEON3_APB_SLAVES 16 /* Total number of APB slaves per APB bus */ - -/* Vendor codes */ -#define VENDOR_GAISLER 1 -#define VENDOR_PENDER 2 -#define VENDOR_ESA 4 -#define VENDOR_ASTRIUM 6 -#define VENDOR_OPENCHIP 7 -#define VENDOR_OPENCORES 8 -#define VENDOR_CONTRIB 9 -#define VENDOR_EONIC 11 -#define VENDOR_RADIONOR 15 -#define VENDOR_GLEICHMANN 16 -#define VENDOR_MENTA 17 -#define VENDOR_SUN 19 -#define VENDOR_EMBEDDIT 234 -#define VENDOR_CAL 202 - -/* Gaisler Research device id's */ -#define GAISLER_LEON3 0x003 -#define GAISLER_LEON3DSU 0x004 -#define GAISLER_ETHAHB 0x005 -#define GAISLER_APBMST 0x006 -#define GAISLER_AHBUART 0x007 -#define GAISLER_SRCTRL 0x008 -#define GAISLER_SDCTRL 0x009 -#define GAISLER_APBUART 0x00C -#define GAISLER_IRQMP 0x00D -#define GAISLER_AHBRAM 0x00E -#define GAISLER_GPTIMER 0x011 -#define GAISLER_PCITRG 0x012 -#define GAISLER_PCISBRG 0x013 -#define GAISLER_PCIFBRG 0x014 -#define GAISLER_PCITRACE 0x015 -#define GAISLER_PCIDMA 0x016 -#define GAISLER_AHBTRACE 0x017 -#define GAISLER_ETHDSU 0x018 -#define GAISLER_PIOPORT 0x01A -#define GAISLER_AHBJTAG 0x01c -#define GAISLER_SPW 0x01f -#define GAISLER_ATACTRL 0x024 -#define GAISLER_VGA 0x061 -#define GAISLER_KBD 0X060 -#define GAISLER_ETHMAC 0x01D -#define GAISLER_DDRSPA 0x025 -#define GAISLER_EHCI 0x026 -#define GAISLER_UHCI 0x027 -#define GAISLER_SPW2 0x029 -#define GAISLER_DDR2SPA 0x02E -#define GAISLER_AHBSTAT 0x052 -#define GAISLER_FTMCTRL 0x054 - -#define GAISLER_L2TIME 0xffd /* internal device: leon2 timer */ -#define GAISLER_L2C 0xffe /* internal device: leon2compat */ -#define GAISLER_PLUGPLAY 0xfff /* internal device: plug & play configarea */ - -/* European Space Agency device id's */ -#define ESA_LEON2 0x2 -#define ESA_MCTRL 0xF - -/* Opencores device id's */ -#define OPENCORES_PCIBR 0x4 -#define OPENCORES_ETHMAC 0x5 - -/* Vendor codes */ - -/* - * - * Macros for manipulating Configuration registers - * - */ +#include -#define amba_vendor(x) (((x) >> 24) & 0xff) - -#define amba_device(x) (((x) >> 12) & 0xfff) - -#define amba_membar_start(mbar) \ - (((mbar) & 0xfff00000) & (((mbar) & 0xfff0) << 16)) - -#define amba_iobar_start(base, iobar) \ - ((base) | ((((iobar) & 0xfff00000)>>12) & (((iobar) & 0xfff0)<<4)) ) - -#define amba_irq(conf) ((conf) & 0xf) +#ifndef __ASSEMBLER__ +/* Structures used to access Plug&Play information directly */ +struct ambapp_pnp_ahb { + const unsigned int id; /* VENDOR, DEVICE, VER, IRQ, */ + const unsigned int custom[3]; + const unsigned int mbar[4]; /* MASK, ADDRESS, TYPE, + * CACHABLE/PREFETCHABLE */ +}; + +struct ambapp_pnp_apb { + const unsigned int id; /* VENDOR, DEVICE, VER, IRQ, */ + const unsigned int iobar; /* MASK, ADDRESS, TYPE, + * CACHABLE/PREFETCHABLE */ +}; -#define amba_ver(conf) (((conf)>>5) & 0x1f) +/* AMBA Plug&Play AHB Masters & Slaves information locations + * Max devices is 64 supported by HW, however often only 16 + * are used. + */ +struct ambapp_pnp_info { + struct ambapp_pnp_ahb masters[64]; + struct ambapp_pnp_ahb slaves[63]; + const unsigned int unused[4]; + const unsigned int systemid[4]; +}; + +/* Describes a AMBA PnP bus */ +struct ambapp_bus { + int buses; /* Number of buses */ + unsigned int ioareas[6]; /* PnP I/O AREAs of AHB buses */ + unsigned int freq; /* Frequency of bus0 [Hz] */ +}; + +/* Processor Local AMBA bus */ +extern struct ambapp_bus ambapp_plb; + +/* Get Bus frequency of a certain AMBA bus */ +extern unsigned int ambapp_bus_freq( + struct ambapp_bus *abus, + int ahb_bus_index + ); + +/* AMBA PnP information of a APB Device */ +typedef struct { + unsigned int vendor; + unsigned int device; + unsigned char irq; + unsigned char ver; + unsigned int address; + unsigned int mask; + int ahb_bus_index; +} ambapp_apbdev; -#define amba_membar_type(mbar) ((mbar) & 0xf) +/* AMBA PnP information of a AHB Device */ +typedef struct { + unsigned int vendor; + unsigned int device; + unsigned char irq; + unsigned char ver; + unsigned int userdef[3]; + unsigned int address[4]; + unsigned int mask[4]; + int type[4]; + int ahb_bus_index; +} ambapp_ahbdev; -#define amba_membar_mask(mbar) (((mbar)>>4) & 0xfff) +/* Scan AMBA Bus for AHB Bridges */ +extern void ambapp_bus_init( + unsigned int ioarea, + unsigned int freq, + struct ambapp_bus *abus); -#define AMBA_TYPE_APBIO 0x1 -#define AMBA_TYPE_MEM 0x2 -#define AMBA_TYPE_AHBIO 0x3 +/* Find APB Slave device by index using breath first search. + * + * When vendor and device are both set to zero, any device + * with a non-zero device ID will match the search. It may be + * useful when processing all devices on a AMBA bus. + */ +extern int ambapp_apb_find( + struct ambapp_bus *abus, + int vendor, + int device, + int index, + ambapp_apbdev *dev + ); + +/* Find AHB Master device by index using breath first search. + * + * When vendor and device are both set to zero, any device + * with a non-zero device ID will match the search. It may be + * useful when processing all devices on a AMBA bus. + */ +extern int ambapp_ahbmst_find( + struct ambapp_bus *abus, + int vendor, + int device, + int index, + ambapp_ahbdev *dev + ); + +/* Find AHB Slave device by index using breath first search. + * + * When vendor and device are both set to zero, any device + * with a non-zero device ID will match the search. It may be + * useful when processing all devices on a AMBA bus. + */ +extern int ambapp_ahbslv_find( + struct ambapp_bus *abus, + int vendor, + int device, + int index, + ambapp_ahbdev *dev + ); + +/* Return number of APB Slave devices of a certain ID (VENDOR:DEVICE) + * zero is returned if no devices was found. + */ +extern int ambapp_apb_count(struct ambapp_bus *abus, int vendor, int device); -#define AMBA_TYPE_AHBIO_ADDR(addr) (LEON3_IO_AREA | ((addr) >> 12)) +/* Return number of AHB Master devices of a certain ID (VENDOR:DEVICE) + * zero is returned if no devices was found. + */ +extern int ambapp_ahbmst_count(struct ambapp_bus *abus, int vendor, int device); -#ifndef __ASSEMBLER__ +/* Return number of AHB Slave devices of a certain ID (VENDOR:DEVICE) + * zero is returned if no devices was found. + */ +extern int ambapp_ahbslv_count(struct ambapp_bus *abus, int vendor, int device); #ifdef CONFIG_CMD_AMBAPP @@ -135,109 +155,72 @@ char *ambapp_device_id2str(int vendor, int id); /* Return name of vendor */ char *ambapp_vendor_id2str(int vendor); -#endif -/* - * Types and structure used for AMBA Plug & Play bus scanning - */ +/* Return description of a device */ +char *ambapp_device_id2desc(int vendor, int id); -/* AMBA Plug&Play AHB information layout */ -typedef struct { - unsigned int conf; - unsigned int userdef[3]; - unsigned int bars[4]; -} ahbctrl_pp_dev; +#endif -/* Prototypes for scanning AMBA Plug&Play bus for AMBA - * i) AHB Masters - * ii) AHB Slaves - * iii) APB Slaves (APB MST is a AHB Slave) - */ +#endif /* defined(__ASSEMBLER__) */ -typedef struct { - unsigned char irq; - unsigned char ver; - unsigned int address; -} ambapp_apbdev; - -typedef struct { - unsigned char irq; - unsigned char ver; - unsigned int userdef[3]; - unsigned int address[4]; -} ambapp_ahbdev; +#define AMBA_DEFAULT_IOAREA 0xfff00000 +#define AMBA_CONF_AREA 0xff000 +#define AMBA_AHB_SLAVE_CONF_AREA 0x800 -/* AMBA Plug&Play AHB Masters & Slaves information locations - * Max devices is 64 supported by HW, however often only 8 - * are used. - */ -typedef struct { - ahbctrl_pp_dev masters[64]; - ahbctrl_pp_dev slaves[64]; -} ahbctrl_info; +#define DEV_NONE 0 +#define DEV_AHB_MST 1 +#define DEV_AHB_SLV 2 +#define DEV_APB_SLV 3 -/* AMBA Plug&Play AHB information layout */ -typedef struct { - unsigned int conf; - unsigned int bar; -} apbctrl_pp_dev; +#define AMBA_TYPE_APBIO 0x1 +#define AMBA_TYPE_MEM 0x2 +#define AMBA_TYPE_AHBIO 0x3 -/* All functions return the number of found devices - * 0 = no devices found +/* ID layout for APB and AHB devices */ +#define AMBA_PNP_ID(vendor, device) (((vendor)<<24) | ((device)<<12)) + +/* APB Slave PnP layout definitions */ +#define AMBA_APB_ID_OFS (0*4) +#define AMBA_APB_IOBAR_OFS (1*4) +#define AMBA_APB_CONF_LENGH (2*4) + +/* AHB Master/Slave layout PnP definitions */ +#define AMBA_AHB_ID_OFS (0*4) +#define AMBA_AHB_CUSTOM0_OFS (1*4) +#define AMBA_AHB_CUSTOM1_OFS (2*4) +#define AMBA_AHB_CUSTOM2_OFS (3*4) +#define AMBA_AHB_MBAR0_OFS (4*4) +#define AMBA_AHB_MBAR1_OFS (5*4) +#define AMBA_AHB_MBAR2_OFS (6*4) +#define AMBA_AHB_MBAR3_OFS (7*4) +#define AMBA_AHB_CONF_LENGH (8*4) + +/* Macros for extracting information from AMBA PnP information + * registers. */ -/****************************** APB SLAVES ******************************/ -int ambapp_apb_count(unsigned int vendor, unsigned int driver); - -int ambapp_apb_first(unsigned int vendor, - unsigned int driver, ambapp_apbdev * dev); - -int ambapp_apb_next(unsigned int vendor, - unsigned int driver, ambapp_apbdev * dev, int index); - -int ambapp_apbs_first(unsigned int vendor, - unsigned int driver, ambapp_apbdev * dev, int max_cnt); - -/****************************** AHB MASTERS ******************************/ -int ambapp_ahbmst_count(unsigned int vendor, unsigned int driver); - -int ambapp_ahbmst_first(unsigned int vendor, - unsigned int driver, ambapp_ahbdev * dev); +#define amba_vendor(x) (((x) >> 24) & 0xff) -int ambapp_ahbmst_next(unsigned int vendor, - unsigned int driver, ambapp_ahbdev * dev, int index); +#define amba_device(x) (((x) >> 12) & 0xfff) -int ambapp_ahbmsts_first(unsigned int vendor, - unsigned int driver, ambapp_ahbdev * dev, int max_cnt); +#define amba_irq(conf) ((conf) & 0x1f) -/****************************** AHB SLAVES ******************************/ -int ambapp_ahbslv_count(unsigned int vendor, unsigned int driver); +#define amba_ver(conf) (((conf)>>5) & 0x1f) -int ambapp_ahbslv_first(unsigned int vendor, - unsigned int driver, ambapp_ahbdev * dev); +#define amba_iobar_start(base, iobar) \ + ((base) | ((((iobar) & 0xfff00000)>>12) & (((iobar) & 0xfff0)<<4))) -int ambapp_ahbslv_next(unsigned int vendor, - unsigned int driver, ambapp_ahbdev * dev, int index); +#define amba_membar_start(mbar) \ + (((mbar) & 0xfff00000) & (((mbar) & 0xfff0) << 16)) -int ambapp_ahbslvs_first(unsigned int vendor, - unsigned int driver, ambapp_ahbdev * dev, int max_cnt); +#define amba_membar_type(mbar) ((mbar) & 0xf) -/*************************** AHB/APB only regs functions ************************* - * During start up, no memory is available we can use the simplified functions - * to get to the memory controller. - * - * Functions uses no stack/memory, only registers. - */ -unsigned int ambapp_apb_next_nomem(register unsigned int vendor, /* Plug&Play Vendor ID */ - register unsigned int driver, /* Plug&Play Device ID */ - register int index); +#define amba_membar_mask(mbar) (((mbar) >> 4) & 0xfff) -ahbctrl_pp_dev *ambapp_ahb_next_nomem(register unsigned int vendor, /* Plug&Play Vendor ID */ - register unsigned int driver, /* Plug&Play Device ID */ - register unsigned int opts, /* scan for AHB 1=slave, 0=masters */ - register int index); +#define amba_ahbio_adr(addr, base_ioarea) \ + ((unsigned int)(base_ioarea) | ((addr) >> 12)) -unsigned int ambapp_ahb_get_info(ahbctrl_pp_dev * ahb, int info); +#define amba_apb_mask(iobar) ((~(amba_membar_mask(iobar)<<8) & 0x000fffff) + 1) /*************************** AMBA Plug&Play device register MAPS *****************/ @@ -291,6 +274,8 @@ unsigned int ambapp_ahb_get_info(ahbctrl_pp_dev * ahb, int info); #define LEON_REG_PS2_CTRL_RI 0x00000004 /* Keyboard receive interrupt */ #define LEON_REG_PS2_CTRL_TI 0x00000008 /* Keyboard transmit interrupt */ +#ifndef __ASSEMBLER__ + typedef struct { volatile unsigned int ilevel; volatile unsigned int ipend; -- cgit v1.1