Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like
In this patch, we provide SMP extend to Blackfin CPLB related code
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
*/
#ifndef __ASM_BFIN_CPLB_MPU_H
#define __ASM_BFIN_CPLB_MPU_H
+#include <linux/threads.h>
struct cplb_entry {
unsigned long data, addr;
unsigned long icplb_data;
};
-extern struct cplb_entry dcplb_tbl[MAX_CPLBS];
-extern struct cplb_entry icplb_tbl[MAX_CPLBS];
+extern struct cplb_entry dcplb_tbl[NR_CPUS][MAX_CPLBS];
+extern struct cplb_entry icplb_tbl[NR_CPUS][MAX_CPLBS];
extern int first_switched_icplb;
extern int first_mask_dcplb;
extern int first_switched_dcplb;
-extern int nr_dcplb_miss, nr_icplb_miss, nr_icplb_supv_miss, nr_dcplb_prot;
-extern int nr_cplb_flush;
+extern int nr_dcplb_miss[], nr_icplb_miss[], nr_icplb_supv_miss[];
+extern int nr_dcplb_prot[], nr_cplb_flush[];
extern int page_mask_order;
extern int page_mask_nelts;
-extern unsigned long *current_rwx_mask;
+extern unsigned long *current_rwx_mask[NR_CPUS];
-extern void flush_switched_cplbs(void);
-extern void set_mask_dcplbs(unsigned long *);
+extern void flush_switched_cplbs(unsigned int);
+extern void set_mask_dcplbs(unsigned long *, unsigned int);
extern void __noreturn panic_cplb_error(int seqstat, struct pt_regs *);
#ifndef _CPLB_H
#define _CPLB_H
-#include <asm/blackfin.h>
#include <mach/anomaly.h>
#define SDRAM_IGENERIC (CPLB_L1_CHBL | CPLB_USER_RD | CPLB_VALID | CPLB_PORTPRIO)
#endif
#define L1_DMEMORY (CPLB_LOCK | CPLB_COMMON)
+
+#ifdef CONFIG_SMP
+#define L2_ATTR (INITIAL_T | I_CPLB | D_CPLB)
+#define L2_IMEMORY (CPLB_COMMON | CPLB_LOCK)
+#define L2_DMEMORY (CPLB_COMMON | CPLB_LOCK)
+
+#else
#ifdef CONFIG_BFIN_L2_CACHEABLE
#define L2_IMEMORY (SDRAM_IGENERIC)
#define L2_DMEMORY (SDRAM_DGENERIC)
#else
#define L2_IMEMORY (CPLB_COMMON)
#define L2_DMEMORY (CPLB_COMMON)
-#endif
+#endif /* CONFIG_BFIN_L2_CACHEABLE */
+
+#define L2_ATTR (INITIAL_T | SWITCH_T | I_CPLB | D_CPLB)
+#endif /* CONFIG_SMP */
+
#define SDRAM_DNON_CHBL (CPLB_COMMON)
#define SDRAM_EBIU (CPLB_COMMON)
#define SDRAM_OOPS (CPLB_VALID | ANOMALY_05000158_WORKAROUND | CPLB_LOCK | CPLB_DIRTY)
#define SIZE_1M 0x00100000 /* 1M */
#define SIZE_4M 0x00400000 /* 4M */
-#ifdef CONFIG_MPU
#define MAX_CPLBS 16
-#else
-#define MAX_CPLBS (16 * 2)
-#endif
-
-#define ASYNC_MEMORY_CPLB_COVERAGE ((ASYNC_BANK0_SIZE + ASYNC_BANK1_SIZE + \
- ASYNC_BANK2_SIZE + ASYNC_BANK3_SIZE) / SIZE_4M)
#define CPLB_ENABLE_ICACHE_P 0
#define CPLB_ENABLE_DCACHE_P 1
#ifdef CONFIG_MPU
#include <asm/cplb-mpu.h>
+extern void bfin_icache_init(struct cplb_entry *icplb_tbl);
+extern void bfin_dcache_init(struct cplb_entry *icplb_tbl);
#else
#define IN_KERNEL 1
-enum
-{ZERO_P, L1I_MEM, L1D_MEM, SDRAM_KERN , SDRAM_RAM_MTD, SDRAM_DMAZ, RES_MEM, ASYNC_MEM, L2_MEM};
+#define ASYNC_MEMORY_CPLB_COVERAGE ((ASYNC_BANK0_SIZE + ASYNC_BANK1_SIZE + \
+ ASYNC_BANK2_SIZE + ASYNC_BANK3_SIZE) / SIZE_4M)
+
+#define CPLB_MEM CONFIG_MAX_MEM_SIZE
+
+/*
+* Number of required data CPLB switchtable entries
+* MEMSIZE / 4 (we mostly install 4M page size CPLBs
+* approx 16 for smaller 1MB page size CPLBs for allignment purposes
+* 1 for L1 Data Memory
+* possibly 1 for L2 Data Memory
+* 1 for CONFIG_DEBUG_HUNT_FOR_ZERO
+* 1 for ASYNC Memory
+*/
+#define MAX_SWITCH_D_CPLBS (((CPLB_MEM / 4) + 16 + 1 + 1 + 1 \
+ + ASYNC_MEMORY_CPLB_COVERAGE) * 2)
+
+/*
+* Number of required instruction CPLB switchtable entries
+* MEMSIZE / 4 (we mostly install 4M page size CPLBs
+* approx 12 for smaller 1MB page size CPLBs for allignment purposes
+* 1 for L1 Instruction Memory
+* possibly 1 for L2 Instruction Memory
+* 1 for CONFIG_DEBUG_HUNT_FOR_ZERO
+*/
+#define MAX_SWITCH_I_CPLBS (((CPLB_MEM / 4) + 12 + 1 + 1 + 1) * 2)
+
+/* Number of CPLB table entries, used for cplb-nompu. */
+#define CPLB_TBL_ENTRIES (16 * 4)
+
+enum {
+ ZERO_P, L1I_MEM, L1D_MEM, L2_MEM, SDRAM_KERN, SDRAM_RAM_MTD, SDRAM_DMAZ,
+ RES_MEM, ASYNC_MEM, OCB_ROM
+};
struct cplb_desc {
u32 start; /* start address */
u16 size;
};
-extern u_long icplb_table[];
-extern u_long dcplb_table[];
+extern u_long icplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1];
+extern u_long dcplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1];
/* Till here we are discussing about the static memory management model.
* However, the operating envoronments commonly define more CPLB
* This is how Page descriptor Table is implemented in uClinux/Blackfin.
*/
-extern u_long ipdt_table[];
-extern u_long dpdt_table[];
+extern u_long ipdt_tables[NR_CPUS][MAX_SWITCH_I_CPLBS+1];
+extern u_long dpdt_tables[NR_CPUS][MAX_SWITCH_D_CPLBS+1];
#ifdef CONFIG_CPLB_INFO
-extern u_long ipdt_swapcount_table[];
-extern u_long dpdt_swapcount_table[];
+extern u_long ipdt_swapcount_tables[NR_CPUS][MAX_SWITCH_I_CPLBS];
+extern u_long dpdt_swapcount_tables[NR_CPUS][MAX_SWITCH_D_CPLBS];
#endif
+extern void bfin_icache_init(u_long icplbs[]);
+extern void bfin_dcache_init(u_long dcplbs[]);
#endif /* CONFIG_MPU */
-extern void generate_cplb_tables(void);
-
+#if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE)
+extern void generate_cplb_tables_cpu(unsigned int cpu);
+#endif
#endif
#include <asm/pgalloc.h>
#include <asm/cplbinit.h>
+/* Note: L1 stacks are CPU-private things, so we bluntly disable this
+ feature in SMP mode, and use the per-CPU scratch SRAM bank only to
+ store the PDA instead. */
+
extern void *current_l1_stack_save;
extern int nr_l1stack_tasks;
extern void *l1_stack_base;
static inline void switch_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm,
struct task_struct *tsk)
{
+#ifdef CONFIG_MPU
+ unsigned int cpu = smp_processor_id();
+#endif
if (prev_mm == next_mm)
return;
#ifdef CONFIG_MPU
- if (prev_mm->context.page_rwx_mask == current_rwx_mask) {
- flush_switched_cplbs();
- set_mask_dcplbs(next_mm->context.page_rwx_mask);
+ if (prev_mm->context.page_rwx_mask == current_rwx_mask[cpu]) {
+ flush_switched_cplbs(cpu);
+ set_mask_dcplbs(next_mm->context.page_rwx_mask, cpu);
}
#endif
static inline void update_protections(struct mm_struct *mm)
{
- if (mm->context.page_rwx_mask == current_rwx_mask) {
- flush_switched_cplbs();
- set_mask_dcplbs(mm->context.page_rwx_mask);
+ unsigned int cpu = smp_processor_id();
+ if (mm->context.page_rwx_mask == current_rwx_mask[cpu]) {
+ flush_switched_cplbs(cpu);
+ set_mask_dcplbs(mm->context.page_rwx_mask, cpu);
}
}
#endif
static inline void destroy_context(struct mm_struct *mm)
{
struct sram_list_struct *tmp;
+#ifdef CONFIG_MPU
+ unsigned int cpu = smp_processor_id();
+#endif
#ifdef CONFIG_APP_STACK_L1
if (current_l1_stack_save == mm->context.l1_stack_save)
kfree(tmp);
}
#ifdef CONFIG_MPU
- if (current_rwx_mask == mm->context.page_rwx_mask)
- current_rwx_mask = NULL;
+ if (current_rwx_mask[cpu] == mm->context.page_rwx_mask)
+ current_rwx_mask[cpu] = NULL;
free_pages((unsigned long)mm->context.page_rwx_mask, page_mask_order);
#endif
}
#include <asm/cplbinit.h>
#if defined(CONFIG_BFIN_ICACHE)
-void __init bfin_icache_init(void)
+void __cpuinit bfin_icache_init(struct cplb_entry *icplb_tbl)
{
unsigned long ctrl;
int i;
#endif
#if defined(CONFIG_BFIN_DCACHE)
-void __init bfin_dcache_init(void)
+void __cpuinit bfin_dcache_init(struct cplb_entry *dcplb_tbl)
{
unsigned long ctrl;
int i;
return buf;
}
-int cplbinfo_proc_output(char *buf)
+int cplbinfo_proc_output(char *buf, void *data)
{
char *p;
+ unsigned int cpu = (unsigned int)data;;
p = buf;
- p += sprintf(p, "------------------ CPLB Information ------------------\n\n");
-
+ p += sprintf(p, "------------- CPLB Information on CPU%u --------------\n\n", cpu);
if (bfin_read_IMEM_CONTROL() & ENICPLB) {
p += sprintf(p, "Instruction CPLB entry:\n");
- p = cplb_print_entry(p, icplb_tbl, first_switched_icplb);
+ p = cplb_print_entry(p, icplb_tbl[cpu], first_switched_icplb);
} else
p += sprintf(p, "Instruction CPLB is disabled.\n\n");
if (1 || bfin_read_DMEM_CONTROL() & ENDCPLB) {
p += sprintf(p, "Data CPLB entry:\n");
- p = cplb_print_entry(p, dcplb_tbl, first_switched_dcplb);
+ p = cplb_print_entry(p, dcplb_tbl[cpu], first_switched_dcplb);
} else
p += sprintf(p, "Data CPLB is disabled.\n");
p += sprintf(p, "ICPLB miss: %d\nICPLB supervisor miss: %d\n",
- nr_icplb_miss, nr_icplb_supv_miss);
+ nr_icplb_miss[cpu], nr_icplb_supv_miss[cpu]);
p += sprintf(p, "DCPLB miss: %d\nDCPLB protection fault:%d\n",
- nr_dcplb_miss, nr_dcplb_prot);
+ nr_dcplb_miss[cpu], nr_dcplb_prot[cpu]);
p += sprintf(p, "CPLB flushes: %d\n",
- nr_cplb_flush);
+ nr_cplb_flush[cpu]);
return p - buf;
}
{
int len;
- len = cplbinfo_proc_output(page);
+ len = cplbinfo_proc_output(page, data);
if (len <= off + count)
*eof = 1;
*start = page + off;
static int __init cplbinfo_init(void)
{
- struct proc_dir_entry *entry;
+ struct proc_dir_entry *parent, *entry;
+ unsigned int cpu;
+ unsigned char str[10];
+
+ parent = proc_mkdir("cplbinfo", NULL);
- entry = create_proc_entry("cplbinfo", 0, NULL);
- if (!entry)
- return -ENOMEM;
+ for_each_online_cpu(cpu) {
+ sprintf(str, "cpu%u", cpu);
+ entry = create_proc_entry(str, 0, parent);
+ if (!entry)
+ return -ENOMEM;
- entry->read_proc = cplbinfo_read_proc;
- entry->data = NULL;
+ entry->read_proc = cplbinfo_read_proc;
+ entry->data = (void *)cpu;
+ }
return 0;
}
static void __exit cplbinfo_exit(void)
{
+ unsigned int cpu;
+ unsigned char str[20];
+ for_each_online_cpu(cpu) {
+ sprintf(str, "cplbinfo/cpu%u", cpu);
+ remove_proc_entry(str, NULL);
+ }
remove_proc_entry("cplbinfo", NULL);
}
# error the MPU will not function safely while Anomaly 05000263 applies
#endif
-struct cplb_entry icplb_tbl[MAX_CPLBS];
-struct cplb_entry dcplb_tbl[MAX_CPLBS];
+struct cplb_entry icplb_tbl[NR_CPUS][MAX_CPLBS];
+struct cplb_entry dcplb_tbl[NR_CPUS][MAX_CPLBS];
int first_switched_icplb, first_switched_dcplb;
int first_mask_dcplb;
-void __init generate_cplb_tables(void)
+void __init generate_cplb_tables_cpu(unsigned int cpu)
{
int i_d, i_i;
unsigned long addr;
d_cache |= CPLB_L1_AOW | CPLB_WT;
#endif
#endif
+
i_d = i_i = 0;
/* Set up the zero page. */
- dcplb_tbl[i_d].addr = 0;
- dcplb_tbl[i_d++].data = SDRAM_OOPS | PAGE_SIZE_1KB;
+ dcplb_tbl[cpu][i_d].addr = 0;
+ dcplb_tbl[cpu][i_d++].data = SDRAM_OOPS | PAGE_SIZE_1KB;
#if 0
- icplb_tbl[i_i].addr = 0;
- icplb_tbl[i_i++].data = i_cache | CPLB_USER_RD | PAGE_SIZE_4KB;
+ icplb_tbl[cpu][i_i].addr = 0;
+ icplb_tbl[cpu][i_i++].data = i_cache | CPLB_USER_RD | PAGE_SIZE_4KB;
#endif
/* Cover kernel memory with 4M pages. */
i_data = i_cache | CPLB_VALID | CPLB_PORTPRIO | PAGE_SIZE_4MB;
for (; addr < memory_start; addr += 4 * 1024 * 1024) {
- dcplb_tbl[i_d].addr = addr;
- dcplb_tbl[i_d++].data = d_data;
- icplb_tbl[i_i].addr = addr;
- icplb_tbl[i_i++].data = i_data | (addr == 0 ? CPLB_USER_RD : 0);
+ dcplb_tbl[cpu][i_d].addr = addr;
+ dcplb_tbl[cpu][i_d++].data = d_data;
+ icplb_tbl[cpu][i_i].addr = addr;
+ icplb_tbl[cpu][i_i++].data = i_data | (addr == 0 ? CPLB_USER_RD : 0);
}
/* Cover L1 memory. One 4M area for code and data each is enough. */
#if L1_DATA_A_LENGTH > 0 || L1_DATA_B_LENGTH > 0
- dcplb_tbl[i_d].addr = L1_DATA_A_START;
- dcplb_tbl[i_d++].data = L1_DMEMORY | PAGE_SIZE_4MB;
+ dcplb_tbl[cpu][i_d].addr = get_l1_data_a_start_cpu(cpu);
+ dcplb_tbl[cpu][i_d++].data = L1_DMEMORY | PAGE_SIZE_4MB;
#endif
#if L1_CODE_LENGTH > 0
- icplb_tbl[i_i].addr = L1_CODE_START;
- icplb_tbl[i_i++].data = L1_IMEMORY | PAGE_SIZE_4MB;
+ icplb_tbl[cpu][i_i].addr = get_l1_code_start_cpu(cpu);
+ icplb_tbl[cpu][i_i++].data = L1_IMEMORY | PAGE_SIZE_4MB;
#endif
/* Cover L2 memory */
#if L2_LENGTH > 0
- dcplb_tbl[i_d].addr = L2_START;
- dcplb_tbl[i_d++].data = L2_DMEMORY | PAGE_SIZE_1MB;
- icplb_tbl[i_i].addr = L2_START;
- icplb_tbl[i_i++].data = L2_IMEMORY | PAGE_SIZE_1MB;
+ dcplb_tbl[cpu][i_d].addr = L2_START;
+ dcplb_tbl[cpu][i_d++].data = L2_DMEMORY | PAGE_SIZE_1MB;
+ icplb_tbl[cpu][i_i].addr = L2_START;
+ icplb_tbl[cpu][i_i++].data = L2_IMEMORY | PAGE_SIZE_1MB;
#endif
first_mask_dcplb = i_d;
first_switched_icplb = i_i;
while (i_d < MAX_CPLBS)
- dcplb_tbl[i_d++].data = 0;
+ dcplb_tbl[cpu][i_d++].data = 0;
while (i_i < MAX_CPLBS)
- icplb_tbl[i_i++].data = 0;
+ icplb_tbl[cpu][i_i++].data = 0;
}
int page_mask_nelts;
int page_mask_order;
-unsigned long *current_rwx_mask;
+unsigned long *current_rwx_mask[NR_CPUS];
-int nr_dcplb_miss, nr_icplb_miss, nr_icplb_supv_miss, nr_dcplb_prot;
-int nr_cplb_flush;
+int nr_dcplb_miss[NR_CPUS], nr_icplb_miss[NR_CPUS];
+int nr_icplb_supv_miss[NR_CPUS], nr_dcplb_prot[NR_CPUS];
+int nr_cplb_flush[NR_CPUS];
static inline void disable_dcplb(void)
{
}
/* Counters to implement round-robin replacement. */
-static int icplb_rr_index, dcplb_rr_index;
+static int icplb_rr_index[NR_CPUS], dcplb_rr_index[NR_CPUS];
/*
* Find an ICPLB entry to be evicted and return its index.
*/
-static int evict_one_icplb(void)
+static int evict_one_icplb(unsigned int cpu)
{
int i;
for (i = first_switched_icplb; i < MAX_CPLBS; i++)
- if ((icplb_tbl[i].data & CPLB_VALID) == 0)
+ if ((icplb_tbl[cpu][i].data & CPLB_VALID) == 0)
return i;
- i = first_switched_icplb + icplb_rr_index;
+ i = first_switched_icplb + icplb_rr_index[cpu];
if (i >= MAX_CPLBS) {
i -= MAX_CPLBS - first_switched_icplb;
- icplb_rr_index -= MAX_CPLBS - first_switched_icplb;
+ icplb_rr_index[cpu] -= MAX_CPLBS - first_switched_icplb;
}
- icplb_rr_index++;
+ icplb_rr_index[cpu]++;
return i;
}
-static int evict_one_dcplb(void)
+static int evict_one_dcplb(unsigned int cpu)
{
int i;
for (i = first_switched_dcplb; i < MAX_CPLBS; i++)
- if ((dcplb_tbl[i].data & CPLB_VALID) == 0)
+ if ((dcplb_tbl[cpu][i].data & CPLB_VALID) == 0)
return i;
- i = first_switched_dcplb + dcplb_rr_index;
+ i = first_switched_dcplb + dcplb_rr_index[cpu];
if (i >= MAX_CPLBS) {
i -= MAX_CPLBS - first_switched_dcplb;
- dcplb_rr_index -= MAX_CPLBS - first_switched_dcplb;
+ dcplb_rr_index[cpu] -= MAX_CPLBS - first_switched_dcplb;
}
- dcplb_rr_index++;
+ dcplb_rr_index[cpu]++;
return i;
}
-static noinline int dcplb_miss(void)
+static noinline int dcplb_miss(unsigned int cpu)
{
unsigned long addr = bfin_read_DCPLB_FAULT_ADDR();
int status = bfin_read_DCPLB_STATUS();
int idx;
unsigned long d_data;
- nr_dcplb_miss++;
+ nr_dcplb_miss[cpu]++;
d_data = CPLB_SUPV_WR | CPLB_VALID | CPLB_DIRTY | PAGE_SIZE_4KB;
#ifdef CONFIG_BFIN_DCACHE
} else if (addr >= _ramend) {
d_data |= CPLB_USER_RD | CPLB_USER_WR;
} else {
- mask = current_rwx_mask;
+ mask = current_rwx_mask[cpu];
if (mask) {
int page = addr >> PAGE_SHIFT;
- int offs = page >> 5;
+ int idx = page >> 5;
int bit = 1 << (page & 31);
- if (mask[offs] & bit)
+ if (mask[idx] & bit)
d_data |= CPLB_USER_RD;
mask += page_mask_nelts;
- if (mask[offs] & bit)
+ if (mask[idx] & bit)
d_data |= CPLB_USER_WR;
}
}
- idx = evict_one_dcplb();
+ idx = evict_one_dcplb(cpu);
addr &= PAGE_MASK;
- dcplb_tbl[idx].addr = addr;
- dcplb_tbl[idx].data = d_data;
+ dcplb_tbl[cpu][idx].addr = addr;
+ dcplb_tbl[cpu][idx].data = d_data;
disable_dcplb();
bfin_write32(DCPLB_DATA0 + idx * 4, d_data);
return 0;
}
-static noinline int icplb_miss(void)
+static noinline int icplb_miss(unsigned int cpu)
{
unsigned long addr = bfin_read_ICPLB_FAULT_ADDR();
int status = bfin_read_ICPLB_STATUS();
int idx;
unsigned long i_data;
- nr_icplb_miss++;
+ nr_icplb_miss[cpu]++;
/* If inside the uncached DMA region, fault. */
if (addr >= _ramend - DMA_UNCACHED_REGION && addr < _ramend)
return CPLB_PROT_VIOL;
if (status & FAULT_USERSUPV)
- nr_icplb_supv_miss++;
+ nr_icplb_supv_miss[cpu]++;
/*
* First, try to find a CPLB that matches this address. If we
* that the instruction crosses a page boundary.
*/
for (idx = first_switched_icplb; idx < MAX_CPLBS; idx++) {
- if (icplb_tbl[idx].data & CPLB_VALID) {
- unsigned long this_addr = icplb_tbl[idx].addr;
+ if (icplb_tbl[cpu][idx].data & CPLB_VALID) {
+ unsigned long this_addr = icplb_tbl[cpu][idx].addr;
if (this_addr <= addr && this_addr + PAGE_SIZE > addr) {
addr += PAGE_SIZE;
break;
* Otherwise, check the x bitmap of the current process.
*/
if (!(status & FAULT_USERSUPV)) {
- unsigned long *mask = current_rwx_mask;
+ unsigned long *mask = current_rwx_mask[cpu];
if (mask) {
int page = addr >> PAGE_SHIFT;
- int offs = page >> 5;
+ int idx = page >> 5;
int bit = 1 << (page & 31);
mask += 2 * page_mask_nelts;
- if (mask[offs] & bit)
+ if (mask[idx] & bit)
i_data |= CPLB_USER_RD;
}
}
}
- idx = evict_one_icplb();
+ idx = evict_one_icplb(cpu);
addr &= PAGE_MASK;
- icplb_tbl[idx].addr = addr;
- icplb_tbl[idx].data = i_data;
+ icplb_tbl[cpu][idx].addr = addr;
+ icplb_tbl[cpu][idx].data = i_data;
disable_icplb();
bfin_write32(ICPLB_DATA0 + idx * 4, i_data);
return 0;
}
-static noinline int dcplb_protection_fault(void)
+static noinline int dcplb_protection_fault(unsigned int cpu)
{
int status = bfin_read_DCPLB_STATUS();
- nr_dcplb_prot++;
+ nr_dcplb_prot[cpu]++;
if (status & FAULT_RW) {
int idx = faulting_cplb_index(status);
- unsigned long data = dcplb_tbl[idx].data;
+ unsigned long data = dcplb_tbl[cpu][idx].data;
if (!(data & CPLB_WT) && !(data & CPLB_DIRTY) &&
write_permitted(status, data)) {
data |= CPLB_DIRTY;
- dcplb_tbl[idx].data = data;
+ dcplb_tbl[cpu][idx].data = data;
bfin_write32(DCPLB_DATA0 + idx * 4, data);
return 0;
}
int cplb_hdr(int seqstat, struct pt_regs *regs)
{
int cause = seqstat & 0x3f;
+ unsigned int cpu = smp_processor_id();
switch (cause) {
case 0x23:
- return dcplb_protection_fault();
+ return dcplb_protection_fault(cpu);
case 0x2C:
- return icplb_miss();
+ return icplb_miss(cpu);
case 0x26:
- return dcplb_miss();
+ return dcplb_miss(cpu);
default:
return 1;
}
}
-void flush_switched_cplbs(void)
+void flush_switched_cplbs(unsigned int cpu)
{
int i;
unsigned long flags;
- nr_cplb_flush++;
+ nr_cplb_flush[cpu]++;
local_irq_save(flags);
disable_icplb();
for (i = first_switched_icplb; i < MAX_CPLBS; i++) {
- icplb_tbl[i].data = 0;
+ icplb_tbl[cpu][i].data = 0;
bfin_write32(ICPLB_DATA0 + i * 4, 0);
}
enable_icplb();
disable_dcplb();
for (i = first_switched_dcplb; i < MAX_CPLBS; i++) {
- dcplb_tbl[i].data = 0;
+ dcplb_tbl[cpu][i].data = 0;
bfin_write32(DCPLB_DATA0 + i * 4, 0);
}
enable_dcplb();
}
-void set_mask_dcplbs(unsigned long *masks)
+void set_mask_dcplbs(unsigned long *masks, unsigned int cpu)
{
int i;
unsigned long addr = (unsigned long)masks;
unsigned long flags;
if (!masks) {
- current_rwx_mask = masks;
+ current_rwx_mask[cpu] = masks;
return;
}
local_irq_save(flags);
- current_rwx_mask = masks;
+ current_rwx_mask[cpu] = masks;
d_data = CPLB_SUPV_WR | CPLB_VALID | CPLB_DIRTY | PAGE_SIZE_4KB;
#ifdef CONFIG_BFIN_DCACHE
disable_dcplb();
for (i = first_mask_dcplb; i < first_switched_dcplb; i++) {
- dcplb_tbl[i].addr = addr;
- dcplb_tbl[i].data = d_data;
+ dcplb_tbl[cpu][i].addr = addr;
+ dcplb_tbl[cpu][i].data = d_data;
bfin_write32(DCPLB_DATA0 + i * 4, d_data);
bfin_write32(DCPLB_ADDR0 + i * 4, addr);
addr += PAGE_SIZE;
#include <asm/cplbinit.h>
#if defined(CONFIG_BFIN_ICACHE)
-void __init bfin_icache_init(void)
+void __cpuinit bfin_icache_init(u_long icplb[])
{
- unsigned long *table = icplb_table;
+ unsigned long *table = icplb;
unsigned long ctrl;
int i;
#endif
#if defined(CONFIG_BFIN_DCACHE)
-void __init bfin_dcache_init(void)
+void __cpuinit bfin_dcache_init(u_long dcplb[])
{
- unsigned long *table = dcplb_table;
+ unsigned long *table = dcplb;
unsigned long ctrl;
int i;
ctrl = bfin_read_DMEM_CONTROL();
ctrl |= DMEM_CNTR;
bfin_write_DMEM_CONTROL(ctrl);
+
SSYNC();
}
#endif
return -1;
}
-static char *cplb_print_entry(char *buf, int type)
+static char *cplb_print_entry(char *buf, int type, unsigned int cpu)
{
- unsigned long *p_addr = dpdt_table;
- unsigned long *p_data = dpdt_table + 1;
- unsigned long *p_icount = dpdt_swapcount_table;
- unsigned long *p_ocount = dpdt_swapcount_table + 1;
+ unsigned long *p_addr = dpdt_tables[cpu];
+ unsigned long *p_data = dpdt_tables[cpu] + 1;
+ unsigned long *p_icount = dpdt_swapcount_tables[cpu];
+ unsigned long *p_ocount = dpdt_swapcount_tables[cpu] + 1;
unsigned long *cplb_addr = (unsigned long *)DCPLB_ADDR0;
unsigned long *cplb_data = (unsigned long *)DCPLB_DATA0;
int entry = 0, used_cplb = 0;
if (type == CPLB_I) {
buf += sprintf(buf, "Instruction CPLB entry:\n");
- p_addr = ipdt_table;
- p_data = ipdt_table + 1;
- p_icount = ipdt_swapcount_table;
- p_ocount = ipdt_swapcount_table + 1;
+ p_addr = ipdt_tables[cpu];
+ p_data = ipdt_tables[cpu] + 1;
+ p_icount = ipdt_swapcount_tables[cpu];
+ p_ocount = ipdt_swapcount_tables[cpu] + 1;
cplb_addr = (unsigned long *)ICPLB_ADDR0;
cplb_data = (unsigned long *)ICPLB_DATA0;
} else
return buf;
}
-static int cplbinfo_proc_output(char *buf)
+static int cplbinfo_proc_output(char *buf, void *data)
{
+ unsigned int cpu = (unsigned int)data;
char *p;
p = buf;
- p += sprintf(p, "------------------ CPLB Information ------------------\n\n");
+ p += sprintf(p, "------------- CPLB Information on CPU%u--------------\n\n", cpu);
if (bfin_read_IMEM_CONTROL() & ENICPLB)
- p = cplb_print_entry(p, CPLB_I);
+ p = cplb_print_entry(p, CPLB_I, cpu);
else
p += sprintf(p, "Instruction CPLB is disabled.\n\n");
if (bfin_read_DMEM_CONTROL() & ENDCPLB)
- p = cplb_print_entry(p, CPLB_D);
+ p = cplb_print_entry(p, CPLB_D, cpu);
else
p += sprintf(p, "Data CPLB is disabled.\n");
-
return p - buf;
}
{
int len;
- len = cplbinfo_proc_output(page);
+ len = cplbinfo_proc_output(page, data);
if (len <= off + count)
*eof = 1;
*start = page + off;
static int __init cplbinfo_init(void)
{
- struct proc_dir_entry *entry;
+ struct proc_dir_entry *parent, *entry;
+ unsigned int cpu;
+ unsigned char str[10];
+
+ parent = proc_mkdir("cplbinfo", NULL);
- entry = create_proc_entry("cplbinfo", 0, NULL);
- if (!entry)
- return -ENOMEM;
+ for_each_online_cpu(cpu) {
+ sprintf(str, "cpu%u", cpu);
+ entry = create_proc_entry(str, 0, parent);
+ if (!entry)
+ return -ENOMEM;
- entry->read_proc = cplbinfo_read_proc;
- entry->data = NULL;
+ entry->read_proc = cplbinfo_read_proc;
+ entry->data = (void *)cpu;
+ }
return 0;
}
static void __exit cplbinfo_exit(void)
{
+ unsigned int cpu;
+ unsigned char str[20];
+ for_each_online_cpu(cpu) {
+ sprintf(str, "cplbinfo/cpu%u", cpu);
+ remove_proc_entry(str, NULL);
+ }
remove_proc_entry("cplbinfo", NULL);
}
#include <asm/cplb.h>
#include <asm/cplbinit.h>
-#define CPLB_MEM CONFIG_MAX_MEM_SIZE
-
-/*
-* Number of required data CPLB switchtable entries
-* MEMSIZE / 4 (we mostly install 4M page size CPLBs
-* approx 16 for smaller 1MB page size CPLBs for allignment purposes
-* 1 for L1 Data Memory
-* possibly 1 for L2 Data Memory
-* 1 for CONFIG_DEBUG_HUNT_FOR_ZERO
-* 1 for ASYNC Memory
-*/
-#define MAX_SWITCH_D_CPLBS (((CPLB_MEM / 4) + 16 + 1 + 1 + 1 \
- + ASYNC_MEMORY_CPLB_COVERAGE) * 2)
-
-/*
-* Number of required instruction CPLB switchtable entries
-* MEMSIZE / 4 (we mostly install 4M page size CPLBs
-* approx 12 for smaller 1MB page size CPLBs for allignment purposes
-* 1 for L1 Instruction Memory
-* possibly 1 for L2 Instruction Memory
-* 1 for CONFIG_DEBUG_HUNT_FOR_ZERO
-*/
-#define MAX_SWITCH_I_CPLBS (((CPLB_MEM / 4) + 12 + 1 + 1 + 1) * 2)
-
-
-u_long icplb_table[MAX_CPLBS + 1];
-u_long dcplb_table[MAX_CPLBS + 1];
+u_long icplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1];
+u_long dcplb_tables[NR_CPUS][CPLB_TBL_ENTRIES+1];
#ifdef CONFIG_CPLB_SWITCH_TAB_L1
-# define PDT_ATTR __attribute__((l1_data))
+#define PDT_ATTR __attribute__((l1_data))
#else
-# define PDT_ATTR
+#define PDT_ATTR
#endif
-u_long ipdt_table[MAX_SWITCH_I_CPLBS + 1] PDT_ATTR;
-u_long dpdt_table[MAX_SWITCH_D_CPLBS + 1] PDT_ATTR;
-
+u_long ipdt_tables[NR_CPUS][MAX_SWITCH_I_CPLBS+1] PDT_ATTR;
+u_long dpdt_tables[NR_CPUS][MAX_SWITCH_D_CPLBS+1] PDT_ATTR;
#ifdef CONFIG_CPLB_INFO
-u_long ipdt_swapcount_table[MAX_SWITCH_I_CPLBS] PDT_ATTR;
-u_long dpdt_swapcount_table[MAX_SWITCH_D_CPLBS] PDT_ATTR;
+u_long ipdt_swapcount_tables[NR_CPUS][MAX_SWITCH_I_CPLBS] PDT_ATTR;
+u_long dpdt_swapcount_tables[NR_CPUS][MAX_SWITCH_D_CPLBS] PDT_ATTR;
#endif
struct s_cplb {
.name = "Zero Pointer Guard Page",
},
{
- .start = L1_CODE_START,
- .end = L1_CODE_START + L1_CODE_LENGTH,
+ .start = 0, /* dyanmic */
+ .end = 0, /* dynamic */
.psize = SIZE_4M,
.attr = INITIAL_T | SWITCH_T | I_CPLB,
.i_conf = L1_IMEMORY,
.name = "L1 I-Memory",
},
{
- .start = L1_DATA_A_START,
- .end = L1_DATA_B_START + L1_DATA_B_LENGTH,
+ .start = 0, /* dynamic */
+ .end = 0, /* dynamic */
.psize = SIZE_4M,
.attr = INITIAL_T | SWITCH_T | D_CPLB,
.i_conf = 0,
#endif
.name = "L1 D-Memory",
},
+ {
+ .start = L2_START,
+ .end = L2_START + L2_LENGTH,
+ .psize = SIZE_1M,
+ .attr = L2_ATTR,
+ .i_conf = L2_IMEMORY,
+ .d_conf = L2_DMEMORY,
+ .valid = (L2_LENGTH > 0),
+ .name = "L2 Memory",
+ },
{
.start = 0,
.end = 0, /* dynamic */
.valid = 1,
.name = "Asynchronous Memory Banks",
},
- {
- .start = L2_START,
- .end = L2_START + L2_LENGTH,
- .psize = SIZE_1M,
- .attr = SWITCH_T | I_CPLB | D_CPLB,
- .i_conf = L2_IMEMORY,
- .d_conf = L2_DMEMORY,
- .valid = (L2_LENGTH > 0),
- .name = "L2 Memory",
- },
{
.start = BOOT_ROM_START,
.end = BOOT_ROM_START + BOOT_ROM_LENGTH,
}
}
-void __init generate_cplb_tables(void)
+void __init generate_cplb_tables_cpu(unsigned int cpu)
{
u16 i, j, process;
printk(KERN_INFO "NOMPU: setting up cplb tables for global access\n");
- cplb.init_i.size = MAX_CPLBS;
- cplb.init_d.size = MAX_CPLBS;
+ cplb.init_i.size = CPLB_TBL_ENTRIES;
+ cplb.init_d.size = CPLB_TBL_ENTRIES;
cplb.switch_i.size = MAX_SWITCH_I_CPLBS;
cplb.switch_d.size = MAX_SWITCH_D_CPLBS;
cplb.switch_i.pos = 0;
cplb.switch_d.pos = 0;
- cplb.init_i.tab = icplb_table;
- cplb.init_d.tab = dcplb_table;
- cplb.switch_i.tab = ipdt_table;
- cplb.switch_d.tab = dpdt_table;
+ cplb.init_i.tab = icplb_tables[cpu];
+ cplb.init_d.tab = dcplb_tables[cpu];
+ cplb.switch_i.tab = ipdt_tables[cpu];
+ cplb.switch_d.tab = dpdt_tables[cpu];
+ cplb_data[L1I_MEM].start = get_l1_code_start_cpu(cpu);
+ cplb_data[L1I_MEM].end = cplb_data[L1I_MEM].start + L1_CODE_LENGTH;
+ cplb_data[L1D_MEM].start = get_l1_data_a_start_cpu(cpu);
+ cplb_data[L1D_MEM].end = get_l1_data_b_start_cpu(cpu) + L1_DATA_B_LENGTH;
cplb_data[SDRAM_KERN].end = memory_end;
#ifdef CONFIG_MTD_UCLINUX
cplb.switch_d.tab[cplb.switch_d.pos] = -1;
}
-
#endif
#include <linux/linkage.h>
#include <asm/blackfin.h>
#include <asm/cplb.h>
+#include <asm/asm-offsets.h>
#ifdef CONFIG_EXCPT_IRQ_SYSC_L1
.section .l1.text
.Lifound_victim:
#ifdef CONFIG_CPLB_INFO
R7 = [P0 - 0x104];
- P2.L = _ipdt_table;
- P2.H = _ipdt_table;
- P3.L = _ipdt_swapcount_table;
- P3.H = _ipdt_swapcount_table;
+ GET_PDA(P2, R2);
+ P3 = [P2 + PDA_IPDT_SWAPCOUNT];
+ P2 = [P2 + PDA_IPDT];
P3 += -4;
.Licount:
R2 = [P2]; /* address from config table */
* range.
*/
- P2.L = _ipdt_table;
- P2.H = _ipdt_table;
+ GET_PDA(P3, R0);
+ P2 = [P3 + PDA_IPDT];
#ifdef CONFIG_CPLB_INFO
- P3.L = _ipdt_swapcount_table;
- P3.H = _ipdt_swapcount_table;
+ P3 = [P3 + PDA_IPDT_SWAPCOUNT];
P3 += -8;
#endif
P0.L = _page_size_table;
#ifdef CONFIG_CPLB_INFO
R7 = [P0 - 0x104];
- P2.L = _dpdt_table;
- P2.H = _dpdt_table;
- P3.L = _dpdt_swapcount_table;
- P3.H = _dpdt_swapcount_table;
+ GET_PDA(P2, R2);
+ P3 = [P2 + PDA_DPDT_SWAPCOUNT];
+ P2 = [P2 + PDA_DPDT];
P3 += -4;
.Ldicount:
R2 = [P2];
R0 = I0; /* Our faulting address */
- P2.L = _dpdt_table;
- P2.H = _dpdt_table;
+ GET_PDA(P3, R1);
+ P2 = [P3 + PDA_DPDT];
#ifdef CONFIG_CPLB_INFO
- P3.L = _dpdt_swapcount_table;
- P3.H = _dpdt_swapcount_table;
+ P3 = [P3 + PDA_DPDT_SWAPCOUNT];
P3 += -8;
#endif
git.openpandora.org / pandora-kernel.git / commitdiff