Commit 5213a780 authored by Konrad Eisele's avatar Konrad Eisele Committed by David S. Miller

sparc,leon: CONFIG_SPARC_LEON option and leon specific files.

The macro CONFIG_SPARC_LEON will shield, if undefined, the sun-sparc
code from LEON specific code. In
particular include/asm/leon.h will get empty through #ifdef and
leon_kernel.c and leon_mm.c will not be compiled.
Signed-off-by: default avatarKonrad Eisele <konrad@gaisler.com>
Reviewed-by: default avatarSam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8abf9196
...@@ -437,6 +437,17 @@ config SERIAL_CONSOLE ...@@ -437,6 +437,17 @@ config SERIAL_CONSOLE
If unsure, say N. If unsure, say N.
config SPARC_LEON
bool "Sparc Leon processor family"
depends on SPARC32
---help---
If you say Y here if you are running on a SPARC-LEON processor.
The LEON processor is a synthesizable VHDL model of the
SPARC-v8 standard. LEON is part of the GRLIB collection of
IP cores that are distributed under GPL. GRLIB can be downloaded
from www.gaisler.com. You can download a sparc-linux cross-compilation
toolchain at www.gaisler.com.
endmenu endmenu
menu "Bus options (PCI etc.)" menu "Bus options (PCI etc.)"
......
This diff is collapsed.
/*
*Copyright (C) 2004 Konrad Eisele (eiselekd@web.de,konrad@gaisler.com), Gaisler Research
*Copyright (C) 2004 Stefan Holst (mail@s-holst.de), Uni-Stuttgart
*Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com),Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
*/
#ifndef LEON_AMBA_H_INCLUDE
#define LEON_AMBA_H_INCLUDE
#ifndef __ASSEMBLY__
struct amba_prom_registers {
unsigned int phys_addr; /* The physical address of this register */
unsigned int reg_size; /* How many bytes does this register take up? */
};
#endif
/*
* The following defines the bits in the LEON UART Status Registers.
*/
#define LEON_REG_UART_STATUS_DR 0x00000001 /* Data Ready */
#define LEON_REG_UART_STATUS_TSE 0x00000002 /* TX Send Register Empty */
#define LEON_REG_UART_STATUS_THE 0x00000004 /* TX Hold Register Empty */
#define LEON_REG_UART_STATUS_BR 0x00000008 /* Break Error */
#define LEON_REG_UART_STATUS_OE 0x00000010 /* RX Overrun Error */
#define LEON_REG_UART_STATUS_PE 0x00000020 /* RX Parity Error */
#define LEON_REG_UART_STATUS_FE 0x00000040 /* RX Framing Error */
#define LEON_REG_UART_STATUS_ERR 0x00000078 /* Error Mask */
/*
* The following defines the bits in the LEON UART Ctrl Registers.
*/
#define LEON_REG_UART_CTRL_RE 0x00000001 /* Receiver enable */
#define LEON_REG_UART_CTRL_TE 0x00000002 /* Transmitter enable */
#define LEON_REG_UART_CTRL_RI 0x00000004 /* Receiver interrupt enable */
#define LEON_REG_UART_CTRL_TI 0x00000008 /* Transmitter irq */
#define LEON_REG_UART_CTRL_PS 0x00000010 /* Parity select */
#define LEON_REG_UART_CTRL_PE 0x00000020 /* Parity enable */
#define LEON_REG_UART_CTRL_FL 0x00000040 /* Flow control enable */
#define LEON_REG_UART_CTRL_LB 0x00000080 /* Loop Back enable */
#define LEON3_GPTIMER_EN 1
#define LEON3_GPTIMER_RL 2
#define LEON3_GPTIMER_LD 4
#define LEON3_GPTIMER_IRQEN 8
#define LEON3_GPTIMER_SEPIRQ 8
#define LEON23_REG_TIMER_CONTROL_EN 0x00000001 /* 1 = enable counting */
/* 0 = hold scalar and counter */
#define LEON23_REG_TIMER_CONTROL_RL 0x00000002 /* 1 = reload at 0 */
/* 0 = stop at 0 */
#define LEON23_REG_TIMER_CONTROL_LD 0x00000004 /* 1 = load counter */
/* 0 = no function */
#define LEON23_REG_TIMER_CONTROL_IQ 0x00000008 /* 1 = irq enable */
/* 0 = no function */
/*
* The following defines the bits in the LEON PS/2 Status Registers.
*/
#define LEON_REG_PS2_STATUS_DR 0x00000001 /* Data Ready */
#define LEON_REG_PS2_STATUS_PE 0x00000002 /* Parity error */
#define LEON_REG_PS2_STATUS_FE 0x00000004 /* Framing error */
#define LEON_REG_PS2_STATUS_KI 0x00000008 /* Keyboard inhibit */
#define LEON_REG_PS2_STATUS_RF 0x00000010 /* RX buffer full */
#define LEON_REG_PS2_STATUS_TF 0x00000020 /* TX buffer full */
/*
* The following defines the bits in the LEON PS/2 Ctrl Registers.
*/
#define LEON_REG_PS2_CTRL_RE 0x00000001 /* Receiver enable */
#define LEON_REG_PS2_CTRL_TE 0x00000002 /* Transmitter enable */
#define LEON_REG_PS2_CTRL_RI 0x00000004 /* Keyboard receive irq */
#define LEON_REG_PS2_CTRL_TI 0x00000008 /* Keyboard transmit irq */
#define LEON3_IRQMPSTATUS_CPUNR 28
#define LEON3_IRQMPSTATUS_BROADCAST 27
#define GPTIMER_CONFIG_IRQNT(a) (((a) >> 3) & 0x1f)
#define GPTIMER_CONFIG_ISSEP(a) ((a) & (1 << 8))
#define GPTIMER_CONFIG_NTIMERS(a) ((a) & (0x7))
#define LEON3_GPTIMER_CTRL_PENDING 0x10
#define LEON3_GPTIMER_CONFIG_NRTIMERS(c) ((c)->config & 0x7)
#define LEON3_GPTIMER_CTRL_ISPENDING(r) (((r)&LEON3_GPTIMER_CTRL_PENDING) ? 1 : 0)
#ifdef CONFIG_SPARC_LEON
#ifndef __ASSEMBLY__
struct leon3_irqctrl_regs_map {
u32 ilevel;
u32 ipend;
u32 iforce;
u32 iclear;
u32 mpstatus;
u32 mpbroadcast;
u32 notused02;
u32 notused03;
u32 notused10;
u32 notused11;
u32 notused12;
u32 notused13;
u32 notused20;
u32 notused21;
u32 notused22;
u32 notused23;
u32 mask[16];
u32 force[16];
/* Extended IRQ registers */
u32 intid[16]; /* 0xc0 */
};
struct leon3_apbuart_regs_map {
u32 data;
u32 status;
u32 ctrl;
u32 scaler;
};
struct leon3_gptimerelem_regs_map {
u32 val;
u32 rld;
u32 ctrl;
u32 unused;
};
struct leon3_gptimer_regs_map {
u32 scalar;
u32 scalar_reload;
u32 config;
u32 unused;
struct leon3_gptimerelem_regs_map e[8];
};
/*
* Types and structure used for AMBA Plug & Play bus scanning
*/
#define AMBA_MAXAPB_DEVS 64
#define AMBA_MAXAPB_DEVS_PERBUS 16
struct amba_device_table {
int devnr; /* number of devices on AHB or APB bus */
unsigned int *addr[16]; /* addresses to the devices configuration tables */
unsigned int allocbits[1]; /* 0=unallocated, 1=allocated driver */
};
struct amba_apbslv_device_table {
int devnr; /* number of devices on AHB or APB bus */
unsigned int *addr[AMBA_MAXAPB_DEVS]; /* addresses to the devices configuration tables */
unsigned int apbmst[AMBA_MAXAPB_DEVS]; /* apb master if a entry is a apb slave */
unsigned int apbmstidx[AMBA_MAXAPB_DEVS]; /* apb master idx if a entry is a apb slave */
unsigned int allocbits[4]; /* 0=unallocated, 1=allocated driver */
};
struct amba_confarea_type {
struct amba_confarea_type *next;/* next bus in chain */
struct amba_device_table ahbmst;
struct amba_device_table ahbslv;
struct amba_apbslv_device_table apbslv;
unsigned int apbmst;
};
/* collect apb slaves */
struct amba_apb_device {
unsigned int start, irq, bus_id;
struct amba_confarea_type *bus;
};
/* collect ahb slaves */
struct amba_ahb_device {
unsigned int start[4], irq, bus_id;
struct amba_confarea_type *bus;
};
struct device_node;
void _amba_init(struct device_node *dp, struct device_node ***nextp);
extern struct leon3_irqctrl_regs_map *leon3_irqctrl_regs;
extern struct leon3_gptimer_regs_map *leon3_gptimer_regs;
extern struct amba_apb_device leon_percpu_timer_dev[16];
extern int leondebug_irq_disable;
extern int leon_debug_irqout;
extern unsigned long leon3_gptimer_irq;
extern unsigned int sparc_leon_eirq;
#endif /* __ASSEMBLY__ */
#define LEON3_IO_AREA 0xfff00000
#define LEON3_CONF_AREA 0xff000
#define LEON3_AHB_SLAVE_CONF_AREA (1 << 11)
#define LEON3_AHB_CONF_WORDS 8
#define LEON3_APB_CONF_WORDS 2
#define LEON3_AHB_MASTERS 16
#define LEON3_AHB_SLAVES 16
#define LEON3_APB_SLAVES 16
#define LEON3_APBUARTS 8
/* Vendor codes */
#define VENDOR_GAISLER 1
#define VENDOR_PENDER 2
#define VENDOR_ESA 4
#define VENDOR_OPENCORES 8
/* 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_GRGPIO 0x01A
#define GAISLER_AHBJTAG 0x01c
#define GAISLER_ETHMAC 0x01D
#define GAISLER_AHB2AHB 0x020
#define GAISLER_USBDC 0x021
#define GAISLER_ATACTRL 0x024
#define GAISLER_DDRSPA 0x025
#define GAISLER_USBEHC 0x026
#define GAISLER_USBUHC 0x027
#define GAISLER_I2CMST 0x028
#define GAISLER_SPICTRL 0x02D
#define GAISLER_DDR2SPA 0x02E
#define GAISLER_SPIMCTRL 0x045
#define GAISLER_LEON4 0x048
#define GAISLER_LEON4DSU 0x049
#define GAISLER_AHBSTAT 0x052
#define GAISLER_FTMCTRL 0x054
#define GAISLER_KBD 0x060
#define GAISLER_VGA 0x061
#define GAISLER_SVGA 0x063
#define GAISLER_GRSYSMON 0x066
#define GAISLER_GRACECTRL 0x067
#define GAISLER_L2TIME 0xffd /* internal device: leon2 timer */
#define GAISLER_L2C 0xffe /* internal device: leon2compat */
#define GAISLER_PLUGPLAY 0xfff /* internal device: plug & play configarea */
#define amba_vendor(x) (((x) >> 24) & 0xff)
#define amba_device(x) (((x) >> 12) & 0xfff)
#endif /* !defined(CONFIG_SPARC_LEON) */
#endif
/*
* Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
* Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/interrupt.h>
#include <linux/of_device.h>
#include <asm/oplib.h>
#include <asm/timer.h>
#include <asm/prom.h>
#include <asm/leon.h>
#include <asm/leon_amba.h>
#include "prom.h"
#include "irq.h"
struct leon3_irqctrl_regs_map *leon3_irqctrl_regs; /* interrupt controller base address, initialized by amba_init() */
struct leon3_gptimer_regs_map *leon3_gptimer_regs; /* timer controller base address, initialized by amba_init() */
struct amba_apb_device leon_percpu_timer_dev[16];
int leondebug_irq_disable;
int leon_debug_irqout;
static int dummy_master_l10_counter;
unsigned long leon3_gptimer_irq; /* interrupt controller irq number, initialized by amba_init() */
unsigned int sparc_leon_eirq;
#define LEON_IMASK ((&leon3_irqctrl_regs->mask[0]))
/* Return the IRQ of the pending IRQ on the extended IRQ controller */
int sparc_leon_eirq_get(int eirq, int cpu)
{
return LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->intid[cpu]) & 0x1f;
}
irqreturn_t sparc_leon_eirq_isr(int dummy, void *dev_id)
{
printk(KERN_ERR "sparc_leon_eirq_isr: ERROR EXTENDED IRQ\n");
return IRQ_HANDLED;
}
/* The extended IRQ controller has been found, this function registers it */
void sparc_leon_eirq_register(int eirq)
{
int irq;
/* Register a "BAD" handler for this interrupt, it should never happen */
irq = request_irq(eirq, sparc_leon_eirq_isr,
(IRQF_DISABLED | SA_STATIC_ALLOC), "extirq", NULL);
if (irq) {
printk(KERN_ERR
"sparc_leon_eirq_register: unable to attach IRQ%d\n",
eirq);
} else {
sparc_leon_eirq = eirq;
}
}
static inline unsigned long get_irqmask(unsigned int irq)
{
unsigned long mask;
if (!irq || ((irq > 0xf) && !sparc_leon_eirq)
|| ((irq > 0x1f) && sparc_leon_eirq)) {
printk(KERN_ERR
"leon_get_irqmask: false irq number: %d\n", irq);
mask = 0;
} else {
mask = LEON_HARD_INT(irq);
}
return mask;
}
static void leon_enable_irq(unsigned int irq_nr)
{
unsigned long mask, flags;
mask = get_irqmask(irq_nr);
local_irq_save(flags);
LEON3_BYPASS_STORE_PA(LEON_IMASK,
(LEON3_BYPASS_LOAD_PA(LEON_IMASK) | (mask)));
local_irq_restore(flags);
}
static void leon_disable_irq(unsigned int irq_nr)
{
unsigned long mask, flags;
mask = get_irqmask(irq_nr);
local_irq_save(flags);
LEON3_BYPASS_STORE_PA(LEON_IMASK,
(LEON3_BYPASS_LOAD_PA(LEON_IMASK) & ~(mask)));
local_irq_restore(flags);
}
void __init leon_init_timers(irq_handler_t counter_fn)
{
int irq;
leondebug_irq_disable = 0;
leon_debug_irqout = 0;
master_l10_counter = (unsigned int *)&dummy_master_l10_counter;
dummy_master_l10_counter = 0;
if (leon3_gptimer_regs && leon3_irqctrl_regs) {
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].val, 0);
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].rld,
(((1000000 / 100) - 1)));
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, 0);
} else {
printk(KERN_ERR "No Timer/irqctrl found\n");
BUG();
}
irq = request_irq(leon3_gptimer_irq,
counter_fn,
(IRQF_DISABLED | SA_STATIC_ALLOC), "timer", NULL);
if (irq) {
printk(KERN_ERR "leon_time_init: unable to attach IRQ%d\n",
LEON_INTERRUPT_TIMER1);
prom_halt();
}
if (leon3_gptimer_regs) {
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl,
LEON3_GPTIMER_EN |
LEON3_GPTIMER_RL |
LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN);
}
}
void leon_clear_clock_irq(void)
{
}
void leon_load_profile_irq(int cpu, unsigned int limit)
{
BUG();
}
void __init leon_trans_init(struct device_node *dp)
{
if (strcmp(dp->type, "cpu") == 0 && strcmp(dp->name, "<NULL>") == 0) {
struct property *p;
p = of_find_property(dp, "mid", (void *)0);
if (p) {
int mid;
dp->name = prom_early_alloc(5 + 1);
memcpy(&mid, p->value, p->length);
sprintf((char *)dp->name, "cpu%.2d", mid);
}
}
}
void __initdata (*prom_amba_init)(struct device_node *dp, struct device_node ***nextp) = 0;
void __init leon_node_init(struct device_node *dp, struct device_node ***nextp)
{
if (prom_amba_init &&
strcmp(dp->type, "ambapp") == 0 &&
strcmp(dp->name, "ambapp0") == 0) {
prom_amba_init(dp, nextp);
}
}
void __init leon_init_IRQ(void)
{
sparc_init_timers = leon_init_timers;
BTFIXUPSET_CALL(enable_irq, leon_enable_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(disable_irq, leon_disable_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(enable_pil_irq, leon_enable_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(disable_pil_irq, leon_disable_irq, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(clear_clock_irq, leon_clear_clock_irq,
BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(load_profile_irq, leon_load_profile_irq,
BTFIXUPCALL_NOP);
#ifdef CONFIG_SMP
BTFIXUPSET_CALL(set_cpu_int, leon_set_cpu_int, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(clear_cpu_int, leon_clear_ipi, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(set_irq_udt, leon_set_udt, BTFIXUPCALL_NORM);
#endif
}
void __init leon_init(void)
{
prom_build_more = &leon_node_init;
}
/*
* linux/arch/sparc/mm/leon_m.c
*
* Copyright (C) 2004 Konrad Eisele (eiselekd@web.de, konrad@gaisler.com) Gaisler Research
* Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
* Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
*
* do srmmu probe in software
*
*/
#include <linux/kernel.h>
#include <linux/mm.h>
#include <asm/asi.h>
#include <asm/leon.h>
#include <asm/tlbflush.h>
int leon_flush_during_switch = 1;
int srmmu_swprobe_trace;
unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr)
{
unsigned int ctxtbl;
unsigned int pgd, pmd, ped;
unsigned int ptr;
unsigned int lvl, pte, paddrbase;
unsigned int ctx;
unsigned int paddr_calc;
paddrbase = 0;
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: trace on\n");
ctxtbl = srmmu_get_ctable_ptr();
if (!(ctxtbl)) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: srmmu_get_ctable_ptr returned 0=>0\n");
return 0;
}
if (!_pfn_valid(PFN(ctxtbl))) {
if (srmmu_swprobe_trace)
printk(KERN_INFO
"swprobe: !_pfn_valid(%x)=>0\n",
PFN(ctxtbl));
return 0;
}
ctx = srmmu_get_context();
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: --- ctx (%x) ---\n", ctx);
pgd = LEON_BYPASS_LOAD_PA(ctxtbl + (ctx * 4));
if (((pgd & SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: pgd is entry level 3\n");
lvl = 3;
pte = pgd;
paddrbase = pgd & _SRMMU_PTE_PMASK_LEON;
goto ready;
}
if (((pgd & SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: pgd is invalid => 0\n");
return 0;
}
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: --- pgd (%x) ---\n", pgd);
ptr = (pgd & SRMMU_PTD_PMASK) << 4;
ptr += ((((vaddr) >> LEON_PGD_SH) & LEON_PGD_M) * 4);
if (!_pfn_valid(PFN(ptr)))
return 0;
pmd = LEON_BYPASS_LOAD_PA(ptr);
if (((pmd & SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: pmd is entry level 2\n");
lvl = 2;
pte = pmd;
paddrbase = pmd & _SRMMU_PTE_PMASK_LEON;
goto ready;
}
if (((pmd & SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: pmd is invalid => 0\n");
return 0;
}
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: --- pmd (%x) ---\n", pmd);
ptr = (pmd & SRMMU_PTD_PMASK) << 4;
ptr += (((vaddr >> LEON_PMD_SH) & LEON_PMD_M) * 4);
if (!_pfn_valid(PFN(ptr))) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: !_pfn_valid(%x)=>0\n",
PFN(ptr));
return 0;
}
ped = LEON_BYPASS_LOAD_PA(ptr);
if (((ped & SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: ped is entry level 1\n");
lvl = 1;
pte = ped;
paddrbase = ped & _SRMMU_PTE_PMASK_LEON;
goto ready;
}
if (((ped & SRMMU_ET_MASK) != SRMMU_ET_PTD)) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: ped is invalid => 0\n");
return 0;
}
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: --- ped (%x) ---\n", ped);
ptr = (ped & SRMMU_PTD_PMASK) << 4;
ptr += (((vaddr >> LEON_PTE_SH) & LEON_PTE_M) * 4);
if (!_pfn_valid(PFN(ptr)))
return 0;
ptr = LEON_BYPASS_LOAD_PA(ptr);
if (((ptr & SRMMU_ET_MASK) == SRMMU_ET_PTE)) {
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: ptr is entry level 0\n");
lvl = 0;
pte = ptr;
paddrbase = ptr & _SRMMU_PTE_PMASK_LEON;
goto ready;
}
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: ptr is invalid => 0\n");
return 0;
ready:
switch (lvl) {
case 0:
paddr_calc =
(vaddr & ~(-1 << LEON_PTE_SH)) | ((pte & ~0xff) << 4);
break;
case 1:
paddr_calc =
(vaddr & ~(-1 << LEON_PMD_SH)) | ((pte & ~0xff) << 4);
break;
case 2:
paddr_calc =
(vaddr & ~(-1 << LEON_PGD_SH)) | ((pte & ~0xff) << 4);
break;
default:
case 3:
paddr_calc = vaddr;
break;
}
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: padde %x\n", paddr_calc);
if (paddr)
*paddr = paddr_calc;
return paddrbase;
}
void leon_flush_icache_all(void)
{
__asm__ __volatile__(" flush "); /*iflush*/
}
void leon_flush_dcache_all(void)
{
__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" : :
"i"(ASI_LEON_DFLUSH) : "memory");
}
void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page)
{
if (vma->vm_flags & VM_EXEC)
leon_flush_icache_all();
leon_flush_dcache_all();
}
void leon_flush_cache_all(void)
{
__asm__ __volatile__(" flush "); /*iflush*/
__asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" : :
"i"(ASI_LEON_DFLUSH) : "memory");
}
void leon_flush_tlb_all(void)
{
leon_flush_cache_all();
__asm__ __volatile__("sta %%g0, [%0] %1\n\t" : : "r"(0x400),
"i"(ASI_LEON_MMUFLUSH) : "memory");
}
/* get all cache regs */
void leon3_getCacheRegs(struct leon3_cacheregs *regs)
{
unsigned long ccr, iccr, dccr;
if (!regs)
return;
/* Get Cache regs from "Cache ASI" address 0x0, 0x8 and 0xC */
__asm__ __volatile__("lda [%%g0] %3, %0\n\t"
"mov 0x08, %%g1\n\t"
"lda [%%g1] %3, %1\n\t"
"mov 0x0c, %%g1\n\t"
"lda [%%g1] %3, %2\n\t"
: "=r"(ccr), "=r"(iccr), "=r"(dccr)
/* output */
: "i"(ASI_LEON_CACHEREGS) /* input */
: "g1" /* clobber list */
);
regs->ccr = ccr;
regs->iccr = iccr;
regs->dccr = dccr;
}
/* Due to virtual cache we need to check cache configuration if
* it is possible to skip flushing in some cases.
*
* Leon2 and Leon3 differ in their way of telling cache information
*
*/
int leon_flush_needed(void)
{
int flush_needed = -1;
unsigned int ssize, sets;
char *setStr[4] =
{ "direct mapped", "2-way associative", "3-way associative",
"4-way associative"
};
/* leon 3 */
struct leon3_cacheregs cregs;
leon3_getCacheRegs(&cregs);
sets = (cregs.dccr & LEON3_XCCR_SETS_MASK) >> 24;
/* (ssize=>realsize) 0=>1k, 1=>2k, 2=>4k, 3=>8k ... */
ssize = 1 << ((cregs.dccr & LEON3_XCCR_SSIZE_MASK) >> 20);
printk(KERN_INFO "CACHE: %s cache, set size %dk\n",
sets > 3 ? "unknown" : setStr[sets], ssize);
if ((ssize <= (PAGE_SIZE / 1024)) && (sets == 0)) {
/* Set Size <= Page size ==>
flush on every context switch not needed. */
flush_needed = 0;
printk(KERN_INFO "CACHE: not flushing on every context switch\n");
}
return flush_needed;
}
void leon_switch_mm(void)
{
flush_tlb_mm((void *)0);
if (leon_flush_during_switch)
leon_flush_cache_all();
}
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