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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 13:52:35 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 13:52:35 -0500
commit525995d77ca08dfc2ba6f8e606f93694271dbd66 (patch)
treebe9ddad66cd1301eea8dab7814cbda144a909e35 /arch/blackfin/kernel
parente4bdda1bc3123a9e65f4dd93a23041fde8ed3dc2 (diff)
parent64a2b168023bfd09037ba760838762e56c44178e (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (88 commits) Blackfin: Convert BUG() to use unreachable() Blackfin: define __NR_recvmmsg Blackfin: drop duplicate sched_clock Blackfin: NOMPU: skip DMA ICPLB hole when it is redundant Blackfin: MPU: add missing __init markings Blackfin: add support for TIF_NOTIFY_RESUME Blackfin: kgdb_test: clean up code a bit Blackfin: convert kgdbtest to proc_fops Blackfin: convert cyc2ns() to clocksource_cyc2ns() Blackfin: ip0x: pull in asm/portmux.h for P_xxx defines Blackfin: drop unused ax88180 resources Blackfin: bf537-stamp: add ADF702x network driver resources Blackfin: bf537-stamp: add CAN resources Blackfin: bf537-stamp: add AD5258 i2c address Blackfin: bf537-stamp: add adau1761 i2c address Blackfin: bf537-stamp: add adau1371 i2c address Blackfin: bf537-stamp: add ADP8870 resources Blackfin: bf537-stamp: kill AD714x board-specific Kconfigs Blackfin: bf537-stamp: update ADP5520 resources Blackfin: bf537-stamp: add ADXL346 orientation sensing support ...
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r--arch/blackfin/kernel/bfin_dma_5xx.c52
-rw-r--r--arch/blackfin/kernel/bfin_gpio.c99
-rw-r--r--arch/blackfin/kernel/cplb-mpu/cplbinit.c2
-rw-r--r--arch/blackfin/kernel/cplb-mpu/cplbmgr.c13
-rw-r--r--arch/blackfin/kernel/cplb-nompu/cplbinit.c31
-rw-r--r--arch/blackfin/kernel/dma-mapping.c68
-rw-r--r--arch/blackfin/kernel/gptimers.c32
-rw-r--r--arch/blackfin/kernel/ipipe.c67
-rw-r--r--arch/blackfin/kernel/kgdb.c17
-rw-r--r--arch/blackfin/kernel/kgdb_test.c67
-rw-r--r--arch/blackfin/kernel/process.c95
-rw-r--r--arch/blackfin/kernel/ptrace.c13
-rw-r--r--arch/blackfin/kernel/setup.c46
-rw-r--r--arch/blackfin/kernel/signal.c18
-rw-r--r--arch/blackfin/kernel/time-ts.c47
-rw-r--r--arch/blackfin/kernel/time.c8
-rw-r--r--arch/blackfin/kernel/traps.c45
-rw-r--r--arch/blackfin/kernel/vmlinux.lds.S28
18 files changed, 474 insertions, 274 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 3946aff4f41..924c00286ba 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -37,9 +37,8 @@ static int __init blackfin_dma_init(void)
37 printk(KERN_INFO "Blackfin DMA Controller\n"); 37 printk(KERN_INFO "Blackfin DMA Controller\n");
38 38
39 for (i = 0; i < MAX_DMA_CHANNELS; i++) { 39 for (i = 0; i < MAX_DMA_CHANNELS; i++) {
40 dma_ch[i].chan_status = DMA_CHANNEL_FREE; 40 atomic_set(&dma_ch[i].chan_status, 0);
41 dma_ch[i].regs = dma_io_base_addr[i]; 41 dma_ch[i].regs = dma_io_base_addr[i];
42 mutex_init(&(dma_ch[i].dmalock));
43 } 42 }
44 /* Mark MEMDMA Channel 0 as requested since we're using it internally */ 43 /* Mark MEMDMA Channel 0 as requested since we're using it internally */
45 request_dma(CH_MEM_STREAM0_DEST, "Blackfin dma_memcpy"); 44 request_dma(CH_MEM_STREAM0_DEST, "Blackfin dma_memcpy");
@@ -60,7 +59,7 @@ static int proc_dma_show(struct seq_file *m, void *v)
60 int i; 59 int i;
61 60
62 for (i = 0; i < MAX_DMA_CHANNELS; ++i) 61 for (i = 0; i < MAX_DMA_CHANNELS; ++i)
63 if (dma_ch[i].chan_status != DMA_CHANNEL_FREE) 62 if (dma_channel_active(i))
64 seq_printf(m, "%2d: %s\n", i, dma_ch[i].device_id); 63 seq_printf(m, "%2d: %s\n", i, dma_ch[i].device_id);
65 64
66 return 0; 65 return 0;
@@ -107,20 +106,11 @@ int request_dma(unsigned int channel, const char *device_id)
107 } 106 }
108#endif 107#endif
109 108
110 mutex_lock(&(dma_ch[channel].dmalock)); 109 if (atomic_cmpxchg(&dma_ch[channel].chan_status, 0, 1)) {
111
112 if ((dma_ch[channel].chan_status == DMA_CHANNEL_REQUESTED)
113 || (dma_ch[channel].chan_status == DMA_CHANNEL_ENABLED)) {
114 mutex_unlock(&(dma_ch[channel].dmalock));
115 pr_debug("DMA CHANNEL IN USE \n"); 110 pr_debug("DMA CHANNEL IN USE \n");
116 return -EBUSY; 111 return -EBUSY;
117 } else {
118 dma_ch[channel].chan_status = DMA_CHANNEL_REQUESTED;
119 pr_debug("DMA CHANNEL IS ALLOCATED \n");
120 } 112 }
121 113
122 mutex_unlock(&(dma_ch[channel].dmalock));
123
124#ifdef CONFIG_BF54x 114#ifdef CONFIG_BF54x
125 if (channel >= CH_UART2_RX && channel <= CH_UART3_TX) { 115 if (channel >= CH_UART2_RX && channel <= CH_UART3_TX) {
126 unsigned int per_map; 116 unsigned int per_map;
@@ -148,21 +138,20 @@ EXPORT_SYMBOL(request_dma);
148 138
149int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data) 139int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data)
150{ 140{
151 BUG_ON(channel >= MAX_DMA_CHANNELS || 141 int ret;
152 dma_ch[channel].chan_status == DMA_CHANNEL_FREE); 142 unsigned int irq;
153 143
154 if (callback != NULL) { 144 BUG_ON(channel >= MAX_DMA_CHANNELS || !callback ||
155 int ret; 145 !atomic_read(&dma_ch[channel].chan_status));
156 unsigned int irq = channel2irq(channel);
157 146
158 ret = request_irq(irq, callback, IRQF_DISABLED, 147 irq = channel2irq(channel);
159 dma_ch[channel].device_id, data); 148 ret = request_irq(irq, callback, 0, dma_ch[channel].device_id, data);
160 if (ret) 149 if (ret)
161 return ret; 150 return ret;
151
152 dma_ch[channel].irq = irq;
153 dma_ch[channel].data = data;
162 154
163 dma_ch[channel].irq = irq;
164 dma_ch[channel].data = data;
165 }
166 return 0; 155 return 0;
167} 156}
168EXPORT_SYMBOL(set_dma_callback); 157EXPORT_SYMBOL(set_dma_callback);
@@ -184,7 +173,7 @@ void free_dma(unsigned int channel)
184{ 173{
185 pr_debug("freedma() : BEGIN \n"); 174 pr_debug("freedma() : BEGIN \n");
186 BUG_ON(channel >= MAX_DMA_CHANNELS || 175 BUG_ON(channel >= MAX_DMA_CHANNELS ||
187 dma_ch[channel].chan_status == DMA_CHANNEL_FREE); 176 !atomic_read(&dma_ch[channel].chan_status));
188 177
189 /* Halt the DMA */ 178 /* Halt the DMA */
190 disable_dma(channel); 179 disable_dma(channel);
@@ -194,9 +183,7 @@ void free_dma(unsigned int channel)
194 free_irq(dma_ch[channel].irq, dma_ch[channel].data); 183 free_irq(dma_ch[channel].irq, dma_ch[channel].data);
195 184
196 /* Clear the DMA Variable in the Channel */ 185 /* Clear the DMA Variable in the Channel */
197 mutex_lock(&(dma_ch[channel].dmalock)); 186 atomic_set(&dma_ch[channel].chan_status, 0);
198 dma_ch[channel].chan_status = DMA_CHANNEL_FREE;
199 mutex_unlock(&(dma_ch[channel].dmalock));
200 187
201 pr_debug("freedma() : END \n"); 188 pr_debug("freedma() : END \n");
202} 189}
@@ -210,13 +197,14 @@ int blackfin_dma_suspend(void)
210{ 197{
211 int i; 198 int i;
212 199
213 for (i = 0; i < MAX_DMA_SUSPEND_CHANNELS; ++i) { 200 for (i = 0; i < MAX_DMA_CHANNELS; ++i) {
214 if (dma_ch[i].chan_status == DMA_CHANNEL_ENABLED) { 201 if (dma_ch[i].regs->cfg & DMAEN) {
215 printk(KERN_ERR "DMA Channel %d failed to suspend\n", i); 202 printk(KERN_ERR "DMA Channel %d failed to suspend\n", i);
216 return -EBUSY; 203 return -EBUSY;
217 } 204 }
218 205
219 dma_ch[i].saved_peripheral_map = dma_ch[i].regs->peripheral_map; 206 if (i < MAX_DMA_SUSPEND_CHANNELS)
207 dma_ch[i].saved_peripheral_map = dma_ch[i].regs->peripheral_map;
220 } 208 }
221 209
222 return 0; 210 return 0;
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index 22705eeff34..a174596cc00 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -100,6 +100,12 @@ u8 pmux_offset[][16] = {
100}; 100};
101# endif 101# endif
102 102
103#elif defined(BF538_FAMILY)
104static unsigned short * const port_fer[] = {
105 (unsigned short *) PORTCIO_FER,
106 (unsigned short *) PORTDIO_FER,
107 (unsigned short *) PORTEIO_FER,
108};
103#endif 109#endif
104 110
105static unsigned short reserved_gpio_map[GPIO_BANK_NUM]; 111static unsigned short reserved_gpio_map[GPIO_BANK_NUM];
@@ -163,6 +169,27 @@ static int cmp_label(unsigned short ident, const char *label)
163 169
164static void port_setup(unsigned gpio, unsigned short usage) 170static void port_setup(unsigned gpio, unsigned short usage)
165{ 171{
172#if defined(BF538_FAMILY)
173 /*
174 * BF538/9 Port C,D and E are special.
175 * Inverted PORT_FER polarity on CDE and no PORF_FER on F
176 * Regular PORT F GPIOs are handled here, CDE are exclusively
177 * managed by GPIOLIB
178 */
179
180 if (gpio < MAX_BLACKFIN_GPIOS || gpio >= MAX_RESOURCES)
181 return;
182
183 gpio -= MAX_BLACKFIN_GPIOS;
184
185 if (usage == GPIO_USAGE)
186 *port_fer[gpio_bank(gpio)] |= gpio_bit(gpio);
187 else
188 *port_fer[gpio_bank(gpio)] &= ~gpio_bit(gpio);
189 SSYNC();
190 return;
191#endif
192
166 if (check_gpio(gpio)) 193 if (check_gpio(gpio))
167 return; 194 return;
168 195
@@ -762,6 +789,8 @@ int peripheral_request(unsigned short per, const char *label)
762 if (!(per & P_DEFINED)) 789 if (!(per & P_DEFINED))
763 return -ENODEV; 790 return -ENODEV;
764 791
792 BUG_ON(ident >= MAX_RESOURCES);
793
765 local_irq_save_hw(flags); 794 local_irq_save_hw(flags);
766 795
767 /* If a pin can be muxed as either GPIO or peripheral, make 796 /* If a pin can be muxed as either GPIO or peripheral, make
@@ -979,6 +1008,76 @@ void bfin_gpio_free(unsigned gpio)
979} 1008}
980EXPORT_SYMBOL(bfin_gpio_free); 1009EXPORT_SYMBOL(bfin_gpio_free);
981 1010
1011#ifdef BFIN_SPECIAL_GPIO_BANKS
1012static unsigned short reserved_special_gpio_map[gpio_bank(MAX_RESOURCES)];
1013
1014int bfin_special_gpio_request(unsigned gpio, const char *label)
1015{
1016 unsigned long flags;
1017
1018 local_irq_save_hw(flags);
1019
1020 /*
1021 * Allow that the identical GPIO can
1022 * be requested from the same driver twice
1023 * Do nothing and return -
1024 */
1025
1026 if (cmp_label(gpio, label) == 0) {
1027 local_irq_restore_hw(flags);
1028 return 0;
1029 }
1030
1031 if (unlikely(reserved_special_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1032 local_irq_restore_hw(flags);
1033 printk(KERN_ERR "bfin-gpio: GPIO %d is already reserved by %s !\n",
1034 gpio, get_label(gpio));
1035
1036 return -EBUSY;
1037 }
1038 if (unlikely(reserved_peri_map[gpio_bank(gpio)] & gpio_bit(gpio))) {
1039 local_irq_restore_hw(flags);
1040 printk(KERN_ERR
1041 "bfin-gpio: GPIO %d is already reserved as Peripheral by %s !\n",
1042 gpio, get_label(gpio));
1043
1044 return -EBUSY;
1045 }
1046
1047 reserved_special_gpio_map[gpio_bank(gpio)] |= gpio_bit(gpio);
1048 reserved_peri_map[gpio_bank(gpio)] |= gpio_bit(gpio);
1049
1050 set_label(gpio, label);
1051 local_irq_restore_hw(flags);
1052 port_setup(gpio, GPIO_USAGE);
1053
1054 return 0;
1055}
1056EXPORT_SYMBOL(bfin_special_gpio_request);
1057
1058void bfin_special_gpio_free(unsigned gpio)
1059{
1060 unsigned long flags;
1061
1062 might_sleep();
1063
1064 local_irq_save_hw(flags);
1065
1066 if (unlikely(!(reserved_special_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
1067 gpio_error(gpio);
1068 local_irq_restore_hw(flags);
1069 return;
1070 }
1071
1072 reserved_special_gpio_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
1073 reserved_peri_map[gpio_bank(gpio)] &= ~gpio_bit(gpio);
1074 set_label(gpio, "free");
1075 local_irq_restore_hw(flags);
1076}
1077EXPORT_SYMBOL(bfin_special_gpio_free);
1078#endif
1079
1080
982int bfin_gpio_irq_request(unsigned gpio, const char *label) 1081int bfin_gpio_irq_request(unsigned gpio, const char *label)
983{ 1082{
984 unsigned long flags; 1083 unsigned long flags;
diff --git a/arch/blackfin/kernel/cplb-mpu/cplbinit.c b/arch/blackfin/kernel/cplb-mpu/cplbinit.c
index b52c1f8c4bc..8d42b9e50df 100644
--- a/arch/blackfin/kernel/cplb-mpu/cplbinit.c
+++ b/arch/blackfin/kernel/cplb-mpu/cplbinit.c
@@ -92,6 +92,6 @@ void __init generate_cplb_tables_cpu(unsigned int cpu)
92 icplb_tbl[cpu][i_i++].data = 0; 92 icplb_tbl[cpu][i_i++].data = 0;
93} 93}
94 94
95void generate_cplb_tables_all(void) 95void __init generate_cplb_tables_all(void)
96{ 96{
97} 97}
diff --git a/arch/blackfin/kernel/cplb-mpu/cplbmgr.c b/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
index 69e0e530d70..930c01c0681 100644
--- a/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
+++ b/arch/blackfin/kernel/cplb-mpu/cplbmgr.c
@@ -113,11 +113,11 @@ static noinline int dcplb_miss(unsigned int cpu)
113 addr = L2_START; 113 addr = L2_START;
114 d_data = L2_DMEMORY; 114 d_data = L2_DMEMORY;
115 } else if (addr >= physical_mem_end) { 115 } else if (addr >= physical_mem_end) {
116 if (addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE 116 if (addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE) {
117 && (status & FAULT_USERSUPV)) { 117 addr &= ~(4 * 1024 * 1024 - 1);
118 addr &= ~0x3fffff;
119 d_data &= ~PAGE_SIZE_4KB; 118 d_data &= ~PAGE_SIZE_4KB;
120 d_data |= PAGE_SIZE_4MB; 119 d_data |= PAGE_SIZE_4MB;
120 d_data |= CPLB_USER_RD | CPLB_USER_WR;
121 } else if (addr >= BOOT_ROM_START && addr < BOOT_ROM_START + BOOT_ROM_LENGTH 121 } else if (addr >= BOOT_ROM_START && addr < BOOT_ROM_START + BOOT_ROM_LENGTH
122 && (status & (FAULT_RW | FAULT_USERSUPV)) == FAULT_USERSUPV) { 122 && (status & (FAULT_RW | FAULT_USERSUPV)) == FAULT_USERSUPV) {
123 addr &= ~(1 * 1024 * 1024 - 1); 123 addr &= ~(1 * 1024 * 1024 - 1);
@@ -203,7 +203,12 @@ static noinline int icplb_miss(unsigned int cpu)
203 addr = L2_START; 203 addr = L2_START;
204 i_data = L2_IMEMORY; 204 i_data = L2_IMEMORY;
205 } else if (addr >= physical_mem_end) { 205 } else if (addr >= physical_mem_end) {
206 if (addr >= BOOT_ROM_START && addr < BOOT_ROM_START + BOOT_ROM_LENGTH 206 if (addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE) {
207 addr &= ~(4 * 1024 * 1024 - 1);
208 i_data &= ~PAGE_SIZE_4KB;
209 i_data |= PAGE_SIZE_4MB;
210 i_data |= CPLB_USER_RD;
211 } else if (addr >= BOOT_ROM_START && addr < BOOT_ROM_START + BOOT_ROM_LENGTH
207 && (status & FAULT_USERSUPV)) { 212 && (status & FAULT_USERSUPV)) {
208 addr &= ~(1 * 1024 * 1024 - 1); 213 addr &= ~(1 * 1024 * 1024 - 1);
209 i_data &= ~PAGE_SIZE_4KB; 214 i_data &= ~PAGE_SIZE_4KB;
diff --git a/arch/blackfin/kernel/cplb-nompu/cplbinit.c b/arch/blackfin/kernel/cplb-nompu/cplbinit.c
index fd9a2f31e68..282a7919821 100644
--- a/arch/blackfin/kernel/cplb-nompu/cplbinit.c
+++ b/arch/blackfin/kernel/cplb-nompu/cplbinit.c
@@ -89,15 +89,25 @@ void __init generate_cplb_tables_cpu(unsigned int cpu)
89 89
90void __init generate_cplb_tables_all(void) 90void __init generate_cplb_tables_all(void)
91{ 91{
92 unsigned long uncached_end;
92 int i_d, i_i; 93 int i_d, i_i;
93 94
94 i_d = 0; 95 i_d = 0;
95 /* Normal RAM, including MTD FS. */ 96 /* Normal RAM, including MTD FS. */
96#ifdef CONFIG_MTD_UCLINUX 97#ifdef CONFIG_MTD_UCLINUX
97 dcplb_bounds[i_d].eaddr = memory_mtd_start + mtd_size; 98 uncached_end = memory_mtd_start + mtd_size;
98#else 99#else
99 dcplb_bounds[i_d].eaddr = memory_end; 100 uncached_end = memory_end;
100#endif 101#endif
102 /*
103 * if DMA uncached is less than 1MB, mark the 1MB chunk as uncached
104 * so that we don't have to use 4kB pages and cause CPLB thrashing
105 */
106 if ((DMA_UNCACHED_REGION >= 1 * 1024 * 1024) || !DMA_UNCACHED_REGION ||
107 ((_ramend - uncached_end) >= 1 * 1024 * 1024))
108 dcplb_bounds[i_d].eaddr = uncached_end;
109 else
110 dcplb_bounds[i_d].eaddr = uncached_end & ~(1 * 1024 * 1024);
101 dcplb_bounds[i_d++].data = SDRAM_DGENERIC; 111 dcplb_bounds[i_d++].data = SDRAM_DGENERIC;
102 /* DMA uncached region. */ 112 /* DMA uncached region. */
103 if (DMA_UNCACHED_REGION) { 113 if (DMA_UNCACHED_REGION) {
@@ -135,18 +145,15 @@ void __init generate_cplb_tables_all(void)
135 145
136 i_i = 0; 146 i_i = 0;
137 /* Normal RAM, including MTD FS. */ 147 /* Normal RAM, including MTD FS. */
138#ifdef CONFIG_MTD_UCLINUX 148 icplb_bounds[i_i].eaddr = uncached_end;
139 icplb_bounds[i_i].eaddr = memory_mtd_start + mtd_size;
140#else
141 icplb_bounds[i_i].eaddr = memory_end;
142#endif
143 icplb_bounds[i_i++].data = SDRAM_IGENERIC; 149 icplb_bounds[i_i++].data = SDRAM_IGENERIC;
144 /* DMA uncached region. */
145 if (DMA_UNCACHED_REGION) {
146 icplb_bounds[i_i].eaddr = _ramend;
147 icplb_bounds[i_i++].data = 0;
148 }
149 if (_ramend != physical_mem_end) { 150 if (_ramend != physical_mem_end) {
151 /* DMA uncached region. */
152 if (DMA_UNCACHED_REGION) {
153 /* Normally this hole is caught by the async below. */
154 icplb_bounds[i_i].eaddr = _ramend;
155 icplb_bounds[i_i++].data = 0;
156 }
150 /* Reserved memory. */ 157 /* Reserved memory. */
151 icplb_bounds[i_i].eaddr = physical_mem_end; 158 icplb_bounds[i_i].eaddr = physical_mem_end;
152 icplb_bounds[i_i++].data = (reserved_mem_icache_on ? 159 icplb_bounds[i_i++].data = (reserved_mem_icache_on ?
diff --git a/arch/blackfin/kernel/dma-mapping.c b/arch/blackfin/kernel/dma-mapping.c
index e74e74d7733..e937f323d82 100644
--- a/arch/blackfin/kernel/dma-mapping.c
+++ b/arch/blackfin/kernel/dma-mapping.c
@@ -7,30 +7,25 @@
7 */ 7 */
8 8
9#include <linux/types.h> 9#include <linux/types.h>
10#include <linux/mm.h> 10#include <linux/gfp.h>
11#include <linux/string.h> 11#include <linux/string.h>
12#include <linux/bootmem.h>
13#include <linux/spinlock.h> 12#include <linux/spinlock.h>
14#include <linux/device.h>
15#include <linux/dma-mapping.h> 13#include <linux/dma-mapping.h>
16#include <linux/io.h>
17#include <linux/scatterlist.h> 14#include <linux/scatterlist.h>
18#include <asm/cacheflush.h>
19#include <asm/bfin-global.h>
20 15
21static spinlock_t dma_page_lock; 16static spinlock_t dma_page_lock;
22static unsigned int *dma_page; 17static unsigned long *dma_page;
23static unsigned int dma_pages; 18static unsigned int dma_pages;
24static unsigned long dma_base; 19static unsigned long dma_base;
25static unsigned long dma_size; 20static unsigned long dma_size;
26static unsigned int dma_initialized; 21static unsigned int dma_initialized;
27 22
28void dma_alloc_init(unsigned long start, unsigned long end) 23static void dma_alloc_init(unsigned long start, unsigned long end)
29{ 24{
30 spin_lock_init(&dma_page_lock); 25 spin_lock_init(&dma_page_lock);
31 dma_initialized = 0; 26 dma_initialized = 0;
32 27
33 dma_page = (unsigned int *)__get_free_page(GFP_KERNEL); 28 dma_page = (unsigned long *)__get_free_page(GFP_KERNEL);
34 memset(dma_page, 0, PAGE_SIZE); 29 memset(dma_page, 0, PAGE_SIZE);
35 dma_base = PAGE_ALIGN(start); 30 dma_base = PAGE_ALIGN(start);
36 dma_size = PAGE_ALIGN(end) - PAGE_ALIGN(start); 31 dma_size = PAGE_ALIGN(end) - PAGE_ALIGN(start);
@@ -58,10 +53,11 @@ static unsigned long __alloc_dma_pages(unsigned int pages)
58 spin_lock_irqsave(&dma_page_lock, flags); 53 spin_lock_irqsave(&dma_page_lock, flags);
59 54
60 for (i = 0; i < dma_pages;) { 55 for (i = 0; i < dma_pages;) {
61 if (dma_page[i++] == 0) { 56 if (test_bit(i++, dma_page) == 0) {
62 if (++count == pages) { 57 if (++count == pages) {
63 while (count--) 58 while (count--)
64 dma_page[--i] = 1; 59 __set_bit(--i, dma_page);
60
65 ret = dma_base + (i << PAGE_SHIFT); 61 ret = dma_base + (i << PAGE_SHIFT);
66 break; 62 break;
67 } 63 }
@@ -84,14 +80,14 @@ static void __free_dma_pages(unsigned long addr, unsigned int pages)
84 } 80 }
85 81
86 spin_lock_irqsave(&dma_page_lock, flags); 82 spin_lock_irqsave(&dma_page_lock, flags);
87 for (i = page; i < page + pages; i++) { 83 for (i = page; i < page + pages; i++)
88 dma_page[i] = 0; 84 __clear_bit(i, dma_page);
89 } 85
90 spin_unlock_irqrestore(&dma_page_lock, flags); 86 spin_unlock_irqrestore(&dma_page_lock, flags);
91} 87}
92 88
93void *dma_alloc_coherent(struct device *dev, size_t size, 89void *dma_alloc_coherent(struct device *dev, size_t size,
94 dma_addr_t * dma_handle, gfp_t gfp) 90 dma_addr_t *dma_handle, gfp_t gfp)
95{ 91{
96 void *ret; 92 void *ret;
97 93
@@ -115,21 +111,14 @@ dma_free_coherent(struct device *dev, size_t size, void *vaddr,
115EXPORT_SYMBOL(dma_free_coherent); 111EXPORT_SYMBOL(dma_free_coherent);
116 112
117/* 113/*
118 * Dummy functions defined for some existing drivers 114 * Streaming DMA mappings
119 */ 115 */
120 116void __dma_sync(dma_addr_t addr, size_t size,
121dma_addr_t 117 enum dma_data_direction dir)
122dma_map_single(struct device *dev, void *ptr, size_t size,
123 enum dma_data_direction direction)
124{ 118{
125 BUG_ON(direction == DMA_NONE); 119 _dma_sync(addr, size, dir);
126
127 invalidate_dcache_range((unsigned long)ptr,
128 (unsigned long)ptr + size);
129
130 return (dma_addr_t) ptr;
131} 120}
132EXPORT_SYMBOL(dma_map_single); 121EXPORT_SYMBOL(__dma_sync);
133 122
134int 123int
135dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, 124dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
@@ -137,30 +126,23 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
137{ 126{
138 int i; 127 int i;
139 128
140 BUG_ON(direction == DMA_NONE);
141
142 for (i = 0; i < nents; i++, sg++) { 129 for (i = 0; i < nents; i++, sg++) {
143 sg->dma_address = (dma_addr_t) sg_virt(sg); 130 sg->dma_address = (dma_addr_t) sg_virt(sg);
144 131 __dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction);
145 invalidate_dcache_range(sg_dma_address(sg),
146 sg_dma_address(sg) +
147 sg_dma_len(sg));
148 } 132 }
149 133
150 return nents; 134 return nents;
151} 135}
152EXPORT_SYMBOL(dma_map_sg); 136EXPORT_SYMBOL(dma_map_sg);
153 137
154void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, 138void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
155 enum dma_data_direction direction) 139 int nelems, enum dma_data_direction direction)
156{ 140{
157 BUG_ON(direction == DMA_NONE); 141 int i;
158}
159EXPORT_SYMBOL(dma_unmap_single);
160 142
161void dma_unmap_sg(struct device *dev, struct scatterlist *sg, 143 for (i = 0; i < nelems; i++, sg++) {
162 int nhwentries, enum dma_data_direction direction) 144 sg->dma_address = (dma_addr_t) sg_virt(sg);
163{ 145 __dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction);
164 BUG_ON(direction == DMA_NONE); 146 }
165} 147}
166EXPORT_SYMBOL(dma_unmap_sg); 148EXPORT_SYMBOL(dma_sync_sg_for_device);
diff --git a/arch/blackfin/kernel/gptimers.c b/arch/blackfin/kernel/gptimers.c
index 7281a91d26b..cdbe075de1d 100644
--- a/arch/blackfin/kernel/gptimers.c
+++ b/arch/blackfin/kernel/gptimers.c
@@ -137,7 +137,7 @@ static uint32_t const timil_mask[MAX_BLACKFIN_GPTIMERS] =
137#endif 137#endif
138}; 138};
139 139
140void set_gptimer_pwidth(int timer_id, uint32_t value) 140void set_gptimer_pwidth(unsigned int timer_id, uint32_t value)
141{ 141{
142 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 142 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
143 timer_regs[timer_id]->width = value; 143 timer_regs[timer_id]->width = value;
@@ -145,14 +145,14 @@ void set_gptimer_pwidth(int timer_id, uint32_t value)
145} 145}
146EXPORT_SYMBOL(set_gptimer_pwidth); 146EXPORT_SYMBOL(set_gptimer_pwidth);
147 147
148uint32_t get_gptimer_pwidth(int timer_id) 148uint32_t get_gptimer_pwidth(unsigned int timer_id)
149{ 149{
150 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 150 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
151 return timer_regs[timer_id]->width; 151 return timer_regs[timer_id]->width;
152} 152}
153EXPORT_SYMBOL(get_gptimer_pwidth); 153EXPORT_SYMBOL(get_gptimer_pwidth);
154 154
155void set_gptimer_period(int timer_id, uint32_t period) 155void set_gptimer_period(unsigned int timer_id, uint32_t period)
156{ 156{
157 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 157 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
158 timer_regs[timer_id]->period = period; 158 timer_regs[timer_id]->period = period;
@@ -160,28 +160,28 @@ void set_gptimer_period(int timer_id, uint32_t period)
160} 160}
161EXPORT_SYMBOL(set_gptimer_period); 161EXPORT_SYMBOL(set_gptimer_period);
162 162
163uint32_t get_gptimer_period(int timer_id) 163uint32_t get_gptimer_period(unsigned int timer_id)
164{ 164{
165 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 165 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
166 return timer_regs[timer_id]->period; 166 return timer_regs[timer_id]->period;
167} 167}
168EXPORT_SYMBOL(get_gptimer_period); 168EXPORT_SYMBOL(get_gptimer_period);
169 169
170uint32_t get_gptimer_count(int timer_id) 170uint32_t get_gptimer_count(unsigned int timer_id)
171{ 171{
172 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 172 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
173 return timer_regs[timer_id]->counter; 173 return timer_regs[timer_id]->counter;
174} 174}
175EXPORT_SYMBOL(get_gptimer_count); 175EXPORT_SYMBOL(get_gptimer_count);
176 176
177uint32_t get_gptimer_status(int group) 177uint32_t get_gptimer_status(unsigned int group)
178{ 178{
179 tassert(group < BFIN_TIMER_NUM_GROUP); 179 tassert(group < BFIN_TIMER_NUM_GROUP);
180 return group_regs[group]->status; 180 return group_regs[group]->status;
181} 181}
182EXPORT_SYMBOL(get_gptimer_status); 182EXPORT_SYMBOL(get_gptimer_status);
183 183
184void set_gptimer_status(int group, uint32_t value) 184void set_gptimer_status(unsigned int group, uint32_t value)
185{ 185{
186 tassert(group < BFIN_TIMER_NUM_GROUP); 186 tassert(group < BFIN_TIMER_NUM_GROUP);
187 group_regs[group]->status = value; 187 group_regs[group]->status = value;
@@ -189,42 +189,42 @@ void set_gptimer_status(int group, uint32_t value)
189} 189}
190EXPORT_SYMBOL(set_gptimer_status); 190EXPORT_SYMBOL(set_gptimer_status);
191 191
192int get_gptimer_intr(int timer_id) 192int get_gptimer_intr(unsigned int timer_id)
193{ 193{
194 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 194 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
195 return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & timil_mask[timer_id]); 195 return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & timil_mask[timer_id]);
196} 196}
197EXPORT_SYMBOL(get_gptimer_intr); 197EXPORT_SYMBOL(get_gptimer_intr);
198 198
199void clear_gptimer_intr(int timer_id) 199void clear_gptimer_intr(unsigned int timer_id)
200{ 200{
201 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 201 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
202 group_regs[BFIN_TIMER_OCTET(timer_id)]->status = timil_mask[timer_id]; 202 group_regs[BFIN_TIMER_OCTET(timer_id)]->status = timil_mask[timer_id];
203} 203}
204EXPORT_SYMBOL(clear_gptimer_intr); 204EXPORT_SYMBOL(clear_gptimer_intr);
205 205
206int get_gptimer_over(int timer_id) 206int get_gptimer_over(unsigned int timer_id)
207{ 207{
208 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 208 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
209 return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & tovf_mask[timer_id]); 209 return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & tovf_mask[timer_id]);
210} 210}
211EXPORT_SYMBOL(get_gptimer_over); 211EXPORT_SYMBOL(get_gptimer_over);
212 212
213void clear_gptimer_over(int timer_id) 213void clear_gptimer_over(unsigned int timer_id)
214{ 214{
215 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 215 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
216 group_regs[BFIN_TIMER_OCTET(timer_id)]->status = tovf_mask[timer_id]; 216 group_regs[BFIN_TIMER_OCTET(timer_id)]->status = tovf_mask[timer_id];
217} 217}
218EXPORT_SYMBOL(clear_gptimer_over); 218EXPORT_SYMBOL(clear_gptimer_over);
219 219
220int get_gptimer_run(int timer_id) 220int get_gptimer_run(unsigned int timer_id)
221{ 221{
222 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 222 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
223 return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & trun_mask[timer_id]); 223 return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & trun_mask[timer_id]);
224} 224}
225EXPORT_SYMBOL(get_gptimer_run); 225EXPORT_SYMBOL(get_gptimer_run);
226 226
227void set_gptimer_config(int timer_id, uint16_t config) 227void set_gptimer_config(unsigned int timer_id, uint16_t config)
228{ 228{
229 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 229 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
230 timer_regs[timer_id]->config = config; 230 timer_regs[timer_id]->config = config;
@@ -232,7 +232,7 @@ void set_gptimer_config(int timer_id, uint16_t config)
232} 232}
233EXPORT_SYMBOL(set_gptimer_config); 233EXPORT_SYMBOL(set_gptimer_config);
234 234
235uint16_t get_gptimer_config(int timer_id) 235uint16_t get_gptimer_config(unsigned int timer_id)
236{ 236{
237 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 237 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
238 return timer_regs[timer_id]->config; 238 return timer_regs[timer_id]->config;
@@ -280,7 +280,7 @@ void disable_gptimers_sync(uint16_t mask)
280} 280}
281EXPORT_SYMBOL(disable_gptimers_sync); 281EXPORT_SYMBOL(disable_gptimers_sync);
282 282
283void set_gptimer_pulse_hi(int timer_id) 283void set_gptimer_pulse_hi(unsigned int timer_id)
284{ 284{
285 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 285 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
286 timer_regs[timer_id]->config |= TIMER_PULSE_HI; 286 timer_regs[timer_id]->config |= TIMER_PULSE_HI;
@@ -288,7 +288,7 @@ void set_gptimer_pulse_hi(int timer_id)
288} 288}
289EXPORT_SYMBOL(set_gptimer_pulse_hi); 289EXPORT_SYMBOL(set_gptimer_pulse_hi);
290 290
291void clear_gptimer_pulse_hi(int timer_id) 291void clear_gptimer_pulse_hi(unsigned int timer_id)
292{ 292{
293 tassert(timer_id < MAX_BLACKFIN_GPTIMERS); 293 tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
294 timer_regs[timer_id]->config &= ~TIMER_PULSE_HI; 294 timer_regs[timer_id]->config &= ~TIMER_PULSE_HI;
diff --git a/arch/blackfin/kernel/ipipe.c b/arch/blackfin/kernel/ipipe.c
index 5d7382396dc..a77307a4473 100644
--- a/arch/blackfin/kernel/ipipe.c
+++ b/arch/blackfin/kernel/ipipe.c
@@ -335,3 +335,70 @@ void __ipipe_enable_root_irqs_hw(void)
335 __clear_bit(IPIPE_STALL_FLAG, &ipipe_root_cpudom_var(status)); 335 __clear_bit(IPIPE_STALL_FLAG, &ipipe_root_cpudom_var(status));
336 bfin_sti(bfin_irq_flags); 336 bfin_sti(bfin_irq_flags);
337} 337}
338
339/*
340 * We could use standard atomic bitops in the following root status
341 * manipulation routines, but let's prepare for SMP support in the
342 * same move, preventing CPU migration as required.
343 */
344void __ipipe_stall_root(void)
345{
346 unsigned long *p, flags;
347
348 local_irq_save_hw(flags);
349 p = &__ipipe_root_status;
350 __set_bit(IPIPE_STALL_FLAG, p);
351 local_irq_restore_hw(flags);
352}
353EXPORT_SYMBOL(__ipipe_stall_root);
354
355unsigned long __ipipe_test_and_stall_root(void)
356{
357 unsigned long *p, flags;
358 int x;
359
360 local_irq_save_hw(flags);
361 p = &__ipipe_root_status;
362 x = __test_and_set_bit(IPIPE_STALL_FLAG, p);
363 local_irq_restore_hw(flags);
364
365 return x;
366}
367EXPORT_SYMBOL(__ipipe_test_and_stall_root);
368
369unsigned long __ipipe_test_root(void)
370{
371 const unsigned long *p;
372 unsigned long flags;
373 int x;
374
375 local_irq_save_hw_smp(flags);
376 p = &__ipipe_root_status;
377 x = test_bit(IPIPE_STALL_FLAG, p);
378 local_irq_restore_hw_smp(flags);
379
380 return x;
381}
382EXPORT_SYMBOL(__ipipe_test_root);
383
384void __ipipe_lock_root(void)
385{
386 unsigned long *p, flags;
387
388 local_irq_save_hw(flags);
389 p = &__ipipe_root_status;
390 __set_bit(IPIPE_SYNCDEFER_FLAG, p);
391 local_irq_restore_hw(flags);
392}
393EXPORT_SYMBOL(__ipipe_lock_root);
394
395void __ipipe_unlock_root(void)
396{
397 unsigned long *p, flags;
398
399 local_irq_save_hw(flags);
400 p = &__ipipe_root_status;
401 __clear_bit(IPIPE_SYNCDEFER_FLAG, p);
402 local_irq_restore_hw(flags);
403}
404EXPORT_SYMBOL(__ipipe_unlock_root);
diff --git a/arch/blackfin/kernel/kgdb.c b/arch/blackfin/kernel/kgdb.c
index cce79d05b90..f1036b6b929 100644
--- a/arch/blackfin/kernel/kgdb.c
+++ b/arch/blackfin/kernel/kgdb.c
@@ -24,16 +24,6 @@
24#include <asm/blackfin.h> 24#include <asm/blackfin.h>
25#include <asm/dma.h> 25#include <asm/dma.h>
26 26
27/* Put the error code here just in case the user cares. */
28int gdb_bfin_errcode;
29/* Likewise, the vector number here (since GDB only gets the signal
30 number through the usual means, and that's not very specific). */
31int gdb_bfin_vector = -1;
32
33#if KGDB_MAX_NO_CPUS != 8
34#error change the definition of slavecpulocks
35#endif
36
37void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs) 27void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
38{ 28{
39 gdb_regs[BFIN_R0] = regs->r0; 29 gdb_regs[BFIN_R0] = regs->r0;
@@ -369,13 +359,6 @@ void kgdb_roundup_cpu(int cpu, unsigned long flags)
369} 359}
370#endif 360#endif
371 361
372void kgdb_post_primary_code(struct pt_regs *regs, int eVector, int err_code)
373{
374 /* Master processor is completely in the debugger */
375 gdb_bfin_vector = eVector;
376 gdb_bfin_errcode = err_code;
377}
378
379int kgdb_arch_handle_exception(int vector, int signo, 362int kgdb_arch_handle_exception(int vector, int signo,
380 int err_code, char *remcom_in_buffer, 363 int err_code, char *remcom_in_buffer,
381 char *remcom_out_buffer, 364 char *remcom_out_buffer,
diff --git a/arch/blackfin/kernel/kgdb_test.c b/arch/blackfin/kernel/kgdb_test.c
index 59fc42dc5d6..9a4b0759438 100644
--- a/arch/blackfin/kernel/kgdb_test.c
+++ b/arch/blackfin/kernel/kgdb_test.c
@@ -17,8 +17,9 @@
17 17
18#include <asm/blackfin.h> 18#include <asm/blackfin.h>
19 19
20/* Symbols are here for kgdb test to poke directly */
20static char cmdline[256]; 21static char cmdline[256];
21static unsigned long len; 22static size_t len;
22 23
23#ifndef CONFIG_SMP 24#ifndef CONFIG_SMP
24static int num1 __attribute__((l1_data)); 25static int num1 __attribute__((l1_data));
@@ -27,11 +28,10 @@ void kgdb_l1_test(void) __attribute__((l1_text));
27 28
28void kgdb_l1_test(void) 29void kgdb_l1_test(void)
29{ 30{
30 printk(KERN_ALERT "L1(before change) : data variable addr = 0x%p, data value is %d\n", &num1, num1); 31 pr_alert("L1(before change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
31 printk(KERN_ALERT "L1 : code function addr = 0x%p\n", kgdb_l1_test); 32 pr_alert("L1 : code function addr = 0x%p\n", kgdb_l1_test);
32 num1 = num1 + 10 ; 33 num1 = num1 + 10;
33 printk(KERN_ALERT "L1(after change) : data variable addr = 0x%p, data value is %d\n", &num1, num1); 34 pr_alert("L1(after change) : data variable addr = 0x%p, data value is %d\n", &num1, num1);
34 return ;
35} 35}
36#endif 36#endif
37 37
@@ -42,11 +42,10 @@ void kgdb_l2_test(void) __attribute__((l2));
42 42
43void kgdb_l2_test(void) 43void kgdb_l2_test(void)
44{ 44{
45 printk(KERN_ALERT "L2(before change) : data variable addr = 0x%p, data value is %d\n", &num2, num2); 45 pr_alert("L2(before change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
46 printk(KERN_ALERT "L2 : code function addr = 0x%p\n", kgdb_l2_test); 46 pr_alert("L2 : code function addr = 0x%p\n", kgdb_l2_test);
47 num2 = num2 + 20 ; 47 num2 = num2 + 20;
48 printk(KERN_ALERT "L2(after change) : data variable addr = 0x%p, data value is %d\n", &num2, num2); 48 pr_alert("L2(after change) : data variable addr = 0x%p, data value is %d\n", &num2, num2);
49 return ;
50} 49}
51 50
52#endif 51#endif
@@ -54,12 +53,14 @@ void kgdb_l2_test(void)
54 53
55int kgdb_test(char *name, int len, int count, int z) 54int kgdb_test(char *name, int len, int count, int z)
56{ 55{
57 printk(KERN_ALERT "kgdb name(%d): %s, %d, %d\n", len, name, count, z); 56 pr_alert("kgdb name(%d): %s, %d, %d\n", len, name, count, z);
58 count = z; 57 count = z;
59 return count; 58 return count;
60} 59}
61 60
62static int test_proc_output(char *buf) 61static ssize_t
62kgdb_test_proc_read(struct file *file, char __user *buf,
63 size_t count, loff_t *ppos)
63{ 64{
64 kgdb_test("hello world!", 12, 0x55, 0x10); 65 kgdb_test("hello world!", 12, 0x55, 0x10);
65#ifndef CONFIG_SMP 66#ifndef CONFIG_SMP
@@ -72,49 +73,31 @@ static int test_proc_output(char *buf)
72 return 0; 73 return 0;
73} 74}
74 75
75static int test_read_proc(char *page, char **start, off_t off, 76static ssize_t
76 int count, int *eof, void *data) 77kgdb_test_proc_write(struct file *file, const char __user *buffer,
78 size_t count, loff_t *pos)
77{ 79{
78 int len; 80 len = min_t(size_t, 255, count);
79
80 len = test_proc_output(page);
81 if (len <= off+count)
82 *eof = 1;
83 *start = page + off;
84 len -= off;
85 if (len > count)
86 len = count;
87 if (len < 0)
88 len = 0;
89 return len;
90}
91
92static int test_write_proc(struct file *file, const char *buffer,
93 unsigned long count, void *data)
94{
95 if (count >= 256)
96 len = 255;
97 else
98 len = count;
99
100 memcpy(cmdline, buffer, count); 81 memcpy(cmdline, buffer, count);
101 cmdline[len] = 0; 82 cmdline[len] = 0;
102 83
103 return len; 84 return len;
104} 85}
105 86
87static const struct file_operations kgdb_test_proc_fops = {
88 .owner = THIS_MODULE,
89 .read = kgdb_test_proc_read,
90 .write = kgdb_test_proc_write,
91};
92
106static int __init kgdbtest_init(void) 93static int __init kgdbtest_init(void)
107{ 94{
108 struct proc_dir_entry *entry; 95 struct proc_dir_entry *entry;
109 96
110 entry = create_proc_entry("kgdbtest", 0, NULL); 97 entry = proc_create("kgdbtest", 0, NULL, &kgdb_test_proc_fops);
111 if (entry == NULL) 98 if (entry == NULL)
112 return -ENOMEM; 99 return -ENOMEM;
113 100
114 entry->read_proc = test_read_proc;
115 entry->write_proc = test_write_proc;
116 entry->data = NULL;
117
118 return 0; 101 return 0;
119} 102}
120 103
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
index 45876427eb2..b56b0e485e0 100644
--- a/arch/blackfin/kernel/process.c
+++ b/arch/blackfin/kernel/process.c
@@ -258,9 +258,12 @@ void finish_atomic_sections (struct pt_regs *regs)
258 int __user *up0 = (int __user *)regs->p0; 258 int __user *up0 = (int __user *)regs->p0;
259 259
260 switch (regs->pc) { 260 switch (regs->pc) {
261 default:
262 /* not in middle of an atomic step, so resume like normal */
263 return;
264
261 case ATOMIC_XCHG32 + 2: 265 case ATOMIC_XCHG32 + 2:
262 put_user(regs->r1, up0); 266 put_user(regs->r1, up0);
263 regs->pc = ATOMIC_XCHG32 + 4;
264 break; 267 break;
265 268
266 case ATOMIC_CAS32 + 2: 269 case ATOMIC_CAS32 + 2:
@@ -268,7 +271,6 @@ void finish_atomic_sections (struct pt_regs *regs)
268 if (regs->r0 == regs->r1) 271 if (regs->r0 == regs->r1)
269 case ATOMIC_CAS32 + 6: 272 case ATOMIC_CAS32 + 6:
270 put_user(regs->r2, up0); 273 put_user(regs->r2, up0);
271 regs->pc = ATOMIC_CAS32 + 8;
272 break; 274 break;
273 275
274 case ATOMIC_ADD32 + 2: 276 case ATOMIC_ADD32 + 2:
@@ -276,7 +278,6 @@ void finish_atomic_sections (struct pt_regs *regs)
276 /* fall through */ 278 /* fall through */
277 case ATOMIC_ADD32 + 4: 279 case ATOMIC_ADD32 + 4:
278 put_user(regs->r0, up0); 280 put_user(regs->r0, up0);
279 regs->pc = ATOMIC_ADD32 + 6;
280 break; 281 break;
281 282
282 case ATOMIC_SUB32 + 2: 283 case ATOMIC_SUB32 + 2:
@@ -284,7 +285,6 @@ void finish_atomic_sections (struct pt_regs *regs)
284 /* fall through */ 285 /* fall through */
285 case ATOMIC_SUB32 + 4: 286 case ATOMIC_SUB32 + 4:
286 put_user(regs->r0, up0); 287 put_user(regs->r0, up0);
287 regs->pc = ATOMIC_SUB32 + 6;
288 break; 288 break;
289 289
290 case ATOMIC_IOR32 + 2: 290 case ATOMIC_IOR32 + 2:
@@ -292,7 +292,6 @@ void finish_atomic_sections (struct pt_regs *regs)
292 /* fall through */ 292 /* fall through */
293 case ATOMIC_IOR32 + 4: 293 case ATOMIC_IOR32 + 4:
294 put_user(regs->r0, up0); 294 put_user(regs->r0, up0);
295 regs->pc = ATOMIC_IOR32 + 6;
296 break; 295 break;
297 296
298 case ATOMIC_AND32 + 2: 297 case ATOMIC_AND32 + 2:
@@ -300,7 +299,6 @@ void finish_atomic_sections (struct pt_regs *regs)
300 /* fall through */ 299 /* fall through */
301 case ATOMIC_AND32 + 4: 300 case ATOMIC_AND32 + 4:
302 put_user(regs->r0, up0); 301 put_user(regs->r0, up0);
303 regs->pc = ATOMIC_AND32 + 6;
304 break; 302 break;
305 303
306 case ATOMIC_XOR32 + 2: 304 case ATOMIC_XOR32 + 2:
@@ -308,9 +306,15 @@ void finish_atomic_sections (struct pt_regs *regs)
308 /* fall through */ 306 /* fall through */
309 case ATOMIC_XOR32 + 4: 307 case ATOMIC_XOR32 + 4:
310 put_user(regs->r0, up0); 308 put_user(regs->r0, up0);
311 regs->pc = ATOMIC_XOR32 + 6;
312 break; 309 break;
313 } 310 }
311
312 /*
313 * We've finished the atomic section, and the only thing left for
314 * userspace is to do a RTS, so we might as well handle that too
315 * since we need to update the PC anyways.
316 */
317 regs->pc = regs->rets;
314} 318}
315 319
316static inline 320static inline
@@ -332,12 +336,58 @@ int in_mem_const(unsigned long addr, unsigned long size,
332{ 336{
333 return in_mem_const_off(addr, size, 0, const_addr, const_size); 337 return in_mem_const_off(addr, size, 0, const_addr, const_size);
334} 338}
335#define IN_ASYNC(bnum, bctlnum) \ 339#define ASYNC_ENABLED(bnum, bctlnum) \
336({ \ 340({ \
337 (bfin_read_EBIU_AMGCTL() & 0xe) < ((bnum + 1) << 1) ? -EFAULT : \ 341 (bfin_read_EBIU_AMGCTL() & 0xe) < ((bnum + 1) << 1) ? 0 : \
338 bfin_read_EBIU_AMBCTL##bctlnum() & B##bnum##RDYEN ? -EFAULT : \ 342 bfin_read_EBIU_AMBCTL##bctlnum() & B##bnum##RDYEN ? 0 : \
339 BFIN_MEM_ACCESS_CORE; \ 343 1; \
340}) 344})
345/*
346 * We can't read EBIU banks that aren't enabled or we end up hanging
347 * on the access to the async space. Make sure we validate accesses
348 * that cross async banks too.
349 * 0 - found, but unusable
350 * 1 - found & usable
351 * 2 - not found
352 */
353static
354int in_async(unsigned long addr, unsigned long size)
355{
356 if (addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK0_BASE + ASYNC_BANK0_SIZE) {
357 if (!ASYNC_ENABLED(0, 0))
358 return 0;
359 if (addr + size <= ASYNC_BANK0_BASE + ASYNC_BANK0_SIZE)
360 return 1;
361 size -= ASYNC_BANK0_BASE + ASYNC_BANK0_SIZE - addr;
362 addr = ASYNC_BANK0_BASE + ASYNC_BANK0_SIZE;
363 }
364 if (addr >= ASYNC_BANK1_BASE && addr < ASYNC_BANK1_BASE + ASYNC_BANK1_SIZE) {
365 if (!ASYNC_ENABLED(1, 0))
366 return 0;
367 if (addr + size <= ASYNC_BANK1_BASE + ASYNC_BANK1_SIZE)
368 return 1;
369 size -= ASYNC_BANK1_BASE + ASYNC_BANK1_SIZE - addr;
370 addr = ASYNC_BANK1_BASE + ASYNC_BANK1_SIZE;
371 }
372 if (addr >= ASYNC_BANK2_BASE && addr < ASYNC_BANK2_BASE + ASYNC_BANK2_SIZE) {
373 if (!ASYNC_ENABLED(2, 1))
374 return 0;
375 if (addr + size <= ASYNC_BANK2_BASE + ASYNC_BANK2_SIZE)
376 return 1;
377 size -= ASYNC_BANK2_BASE + ASYNC_BANK2_SIZE - addr;
378 addr = ASYNC_BANK2_BASE + ASYNC_BANK2_SIZE;
379 }
380 if (addr >= ASYNC_BANK3_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE) {
381 if (ASYNC_ENABLED(3, 1))
382 return 0;
383 if (addr + size <= ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE)
384 return 1;
385 return 0;
386 }
387
388 /* not within async bounds */
389 return 2;
390}
341 391
342int bfin_mem_access_type(unsigned long addr, unsigned long size) 392int bfin_mem_access_type(unsigned long addr, unsigned long size)
343{ 393{
@@ -374,17 +424,11 @@ int bfin_mem_access_type(unsigned long addr, unsigned long size)
374 if (addr >= SYSMMR_BASE) 424 if (addr >= SYSMMR_BASE)
375 return BFIN_MEM_ACCESS_CORE_ONLY; 425 return BFIN_MEM_ACCESS_CORE_ONLY;
376 426
377 /* We can't read EBIU banks that aren't enabled or we end up hanging 427 switch (in_async(addr, size)) {
378 * on the access to the async space. 428 case 0: return -EFAULT;
379 */ 429 case 1: return BFIN_MEM_ACCESS_CORE;
380 if (in_mem_const(addr, size, ASYNC_BANK0_BASE, ASYNC_BANK0_SIZE)) 430 case 2: /* fall through */;
381 return IN_ASYNC(0, 0); 431 }
382 if (in_mem_const(addr, size, ASYNC_BANK1_BASE, ASYNC_BANK1_SIZE))
383 return IN_ASYNC(1, 0);
384 if (in_mem_const(addr, size, ASYNC_BANK2_BASE, ASYNC_BANK2_SIZE))
385 return IN_ASYNC(2, 1);
386 if (in_mem_const(addr, size, ASYNC_BANK3_BASE, ASYNC_BANK3_SIZE))
387 return IN_ASYNC(3, 1);
388 432
389 if (in_mem_const(addr, size, BOOT_ROM_START, BOOT_ROM_LENGTH)) 433 if (in_mem_const(addr, size, BOOT_ROM_START, BOOT_ROM_LENGTH))
390 return BFIN_MEM_ACCESS_CORE; 434 return BFIN_MEM_ACCESS_CORE;
@@ -401,6 +445,8 @@ __attribute__((l1_text))
401/* Return 1 if access to memory range is OK, 0 otherwise */ 445/* Return 1 if access to memory range is OK, 0 otherwise */
402int _access_ok(unsigned long addr, unsigned long size) 446int _access_ok(unsigned long addr, unsigned long size)
403{ 447{
448 int aret;
449
404 if (size == 0) 450 if (size == 0)
405 return 1; 451 return 1;
406 /* Check that things do not wrap around */ 452 /* Check that things do not wrap around */
@@ -450,6 +496,11 @@ int _access_ok(unsigned long addr, unsigned long size)
450 if (in_mem_const(addr, size, COREB_L1_DATA_B_START, COREB_L1_DATA_B_LENGTH)) 496 if (in_mem_const(addr, size, COREB_L1_DATA_B_START, COREB_L1_DATA_B_LENGTH))
451 return 1; 497 return 1;
452#endif 498#endif
499
500 aret = in_async(addr, size);
501 if (aret < 2)
502 return aret;
503
453 if (in_mem_const_off(addr, size, _ebss_l2 - _stext_l2, L2_START, L2_LENGTH)) 504 if (in_mem_const_off(addr, size, _ebss_l2 - _stext_l2, L2_START, L2_LENGTH))
454 return 1; 505 return 1;
455 506
diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index 56b0ba12175..65567dc4b9f 100644
--- a/arch/blackfin/kernel/ptrace.c
+++ b/arch/blackfin/kernel/ptrace.c
@@ -316,19 +316,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
316 case BFIN_MEM_ACCESS_CORE_ONLY: 316 case BFIN_MEM_ACCESS_CORE_ONLY:
317 copied = access_process_vm(child, addr, &data, 317 copied = access_process_vm(child, addr, &data,
318 to_copy, 1); 318 to_copy, 1);
319 if (copied)
320 break;
321
322 /* hrm, why didn't that work ... maybe no mapping */
323 if (addr >= FIXED_CODE_START &&
324 addr + to_copy <= FIXED_CODE_END) {
325 copy_to_user_page(0, 0, 0, paddr, &data, to_copy);
326 copied = to_copy;
327 } else if (addr >= BOOT_ROM_START) {
328 memcpy(paddr, &data, to_copy);
329 copied = to_copy;
330 }
331
332 break; 319 break;
333 case BFIN_MEM_ACCESS_DMA: 320 case BFIN_MEM_ACCESS_DMA:
334 if (safe_dma_memcpy(paddr, &data, to_copy)) 321 if (safe_dma_memcpy(paddr, &data, to_copy))
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index c202a44d141..95448ae9c43 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -178,10 +178,10 @@ void __init bfin_cache_init(void)
178 178
179void __init bfin_relocate_l1_mem(void) 179void __init bfin_relocate_l1_mem(void)
180{ 180{
181 unsigned long l1_code_length; 181 unsigned long text_l1_len = (unsigned long)_text_l1_len;
182 unsigned long l1_data_a_length; 182 unsigned long data_l1_len = (unsigned long)_data_l1_len;
183 unsigned long l1_data_b_length; 183 unsigned long data_b_l1_len = (unsigned long)_data_b_l1_len;
184 unsigned long l2_length; 184 unsigned long l2_len = (unsigned long)_l2_len;
185 185
186 early_shadow_stamp(); 186 early_shadow_stamp();
187 187
@@ -201,30 +201,23 @@ void __init bfin_relocate_l1_mem(void)
201 201
202 blackfin_dma_early_init(); 202 blackfin_dma_early_init();
203 203
204 /* if necessary, copy _stext_l1 to _etext_l1 to L1 instruction SRAM */ 204 /* if necessary, copy L1 text to L1 instruction SRAM */
205 l1_code_length = _etext_l1 - _stext_l1; 205 if (L1_CODE_LENGTH && text_l1_len)
206 if (l1_code_length) 206 early_dma_memcpy(_stext_l1, _text_l1_lma, text_l1_len);
207 early_dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length);
208 207
209 /* if necessary, copy _sdata_l1 to _sbss_l1 to L1 data bank A SRAM */ 208 /* if necessary, copy L1 data to L1 data bank A SRAM */
210 l1_data_a_length = _sbss_l1 - _sdata_l1; 209 if (L1_DATA_A_LENGTH && data_l1_len)
211 if (l1_data_a_length) 210 early_dma_memcpy(_sdata_l1, _data_l1_lma, data_l1_len);
212 early_dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
213 211
214 /* if necessary, copy _sdata_b_l1 to _sbss_b_l1 to L1 data bank B SRAM */ 212 /* if necessary, copy L1 data B to L1 data bank B SRAM */
215 l1_data_b_length = _sbss_b_l1 - _sdata_b_l1; 213 if (L1_DATA_B_LENGTH && data_b_l1_len)
216 if (l1_data_b_length) 214 early_dma_memcpy(_sdata_b_l1, _data_b_l1_lma, data_b_l1_len);
217 early_dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
218 l1_data_a_length, l1_data_b_length);
219 215
220 early_dma_memcpy_done(); 216 early_dma_memcpy_done();
221 217
222 /* if necessary, copy _stext_l2 to _edata_l2 to L2 SRAM */ 218 /* if necessary, copy L2 text/data to L2 SRAM */
223 if (L2_LENGTH != 0) { 219 if (L2_LENGTH && l2_len)
224 l2_length = _sbss_l2 - _stext_l2; 220 memcpy(_stext_l2, _l2_lma, l2_len);
225 if (l2_length)
226 memcpy(_stext_l2, _l2_lma_start, l2_length);
227 }
228} 221}
229 222
230/* add_memory_region to memmap */ 223/* add_memory_region to memmap */
@@ -608,11 +601,6 @@ static __init void memory_setup(void)
608 page_mask_order = get_order(3 * page_mask_nelts * sizeof(long)); 601 page_mask_order = get_order(3 * page_mask_nelts * sizeof(long));
609#endif 602#endif
610 603
611#if !defined(CONFIG_MTD_UCLINUX)
612 /*In case there is no valid CPLB behind memory_end make sure we don't get to close*/
613 memory_end -= SIZE_4K;
614#endif
615
616 init_mm.start_code = (unsigned long)_stext; 604 init_mm.start_code = (unsigned long)_stext;
617 init_mm.end_code = (unsigned long)_etext; 605 init_mm.end_code = (unsigned long)_etext;
618 init_mm.end_data = (unsigned long)_edata; 606 init_mm.end_data = (unsigned long)_edata;
@@ -917,7 +905,7 @@ void __init setup_arch(char **cmdline_p)
917 905
918 printk(KERN_INFO "Blackfin support (C) 2004-2009 Analog Devices, Inc.\n"); 906 printk(KERN_INFO "Blackfin support (C) 2004-2009 Analog Devices, Inc.\n");
919 if (bfin_compiled_revid() == 0xffff) 907 if (bfin_compiled_revid() == 0xffff)
920 printk(KERN_INFO "Compiled for ADSP-%s Rev any\n", CPU); 908 printk(KERN_INFO "Compiled for ADSP-%s Rev any, running on 0.%d\n", CPU, bfin_revid());
921 else if (bfin_compiled_revid() == -1) 909 else if (bfin_compiled_revid() == -1)
922 printk(KERN_INFO "Compiled for ADSP-%s Rev none\n", CPU); 910 printk(KERN_INFO "Compiled for ADSP-%s Rev none\n", CPU);
923 else 911 else
diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index 9d90c18fab2..e0fd63e9e38 100644
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -12,6 +12,7 @@
12#include <linux/binfmts.h> 12#include <linux/binfmts.h>
13#include <linux/freezer.h> 13#include <linux/freezer.h>
14#include <linux/uaccess.h> 14#include <linux/uaccess.h>
15#include <linux/tracehook.h>
15 16
16#include <asm/cacheflush.h> 17#include <asm/cacheflush.h>
17#include <asm/ucontext.h> 18#include <asm/ucontext.h>
@@ -332,3 +333,20 @@ asmlinkage void do_signal(struct pt_regs *regs)
332 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL); 333 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
333 } 334 }
334} 335}
336
337/*
338 * notification of userspace execution resumption
339 */
340asmlinkage void do_notify_resume(struct pt_regs *regs)
341{
342 if (test_thread_flag(TIF_SIGPENDING) || test_thread_flag(TIF_RESTORE_SIGMASK))
343 do_signal(regs);
344
345 if (test_thread_flag(TIF_NOTIFY_RESUME)) {
346 clear_thread_flag(TIF_NOTIFY_RESUME);
347 tracehook_notify_resume(regs);
348 if (current->replacement_session_keyring)
349 key_replace_session_keyring();
350 }
351}
352
diff --git a/arch/blackfin/kernel/time-ts.c b/arch/blackfin/kernel/time-ts.c
index 359cfb1815c..17c38c5b5b2 100644
--- a/arch/blackfin/kernel/time-ts.c
+++ b/arch/blackfin/kernel/time-ts.c
@@ -22,8 +22,6 @@
22#include <asm/time.h> 22#include <asm/time.h>
23#include <asm/gptimers.h> 23#include <asm/gptimers.h>
24 24
25#if defined(CONFIG_CYCLES_CLOCKSOURCE)
26
27/* Accelerators for sched_clock() 25/* Accelerators for sched_clock()
28 * convert from cycles(64bits) => nanoseconds (64bits) 26 * convert from cycles(64bits) => nanoseconds (64bits)
29 * basic equation: 27 * basic equation:
@@ -46,20 +44,11 @@
46 * -johnstul@us.ibm.com "math is hard, lets go shopping!" 44 * -johnstul@us.ibm.com "math is hard, lets go shopping!"
47 */ 45 */
48 46
49static unsigned long cyc2ns_scale;
50#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */ 47#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
51 48
52static inline void set_cyc2ns_scale(unsigned long cpu_khz) 49#if defined(CONFIG_CYCLES_CLOCKSOURCE)
53{
54 cyc2ns_scale = (1000000 << CYC2NS_SCALE_FACTOR) / cpu_khz;
55}
56
57static inline unsigned long long cycles_2_ns(cycle_t cyc)
58{
59 return (cyc * cyc2ns_scale) >> CYC2NS_SCALE_FACTOR;
60}
61 50
62static cycle_t bfin_read_cycles(struct clocksource *cs) 51static notrace cycle_t bfin_read_cycles(struct clocksource *cs)
63{ 52{
64 return __bfin_cycles_off + (get_cycles() << __bfin_cycles_mod); 53 return __bfin_cycles_off + (get_cycles() << __bfin_cycles_mod);
65} 54}
@@ -69,19 +58,18 @@ static struct clocksource bfin_cs_cycles = {
69 .rating = 400, 58 .rating = 400,
70 .read = bfin_read_cycles, 59 .read = bfin_read_cycles,
71 .mask = CLOCKSOURCE_MASK(64), 60 .mask = CLOCKSOURCE_MASK(64),
72 .shift = 22, 61 .shift = CYC2NS_SCALE_FACTOR,
73 .flags = CLOCK_SOURCE_IS_CONTINUOUS, 62 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
74}; 63};
75 64
76unsigned long long sched_clock(void) 65static inline unsigned long long bfin_cs_cycles_sched_clock(void)
77{ 66{
78 return cycles_2_ns(bfin_read_cycles(&bfin_cs_cycles)); 67 return clocksource_cyc2ns(bfin_read_cycles(&bfin_cs_cycles),
68 bfin_cs_cycles.mult, bfin_cs_cycles.shift);
79} 69}
80 70
81static int __init bfin_cs_cycles_init(void) 71static int __init bfin_cs_cycles_init(void)
82{ 72{
83 set_cyc2ns_scale(get_cclk() / 1000);
84
85 bfin_cs_cycles.mult = \ 73 bfin_cs_cycles.mult = \
86 clocksource_hz2mult(get_cclk(), bfin_cs_cycles.shift); 74 clocksource_hz2mult(get_cclk(), bfin_cs_cycles.shift);
87 75
@@ -108,7 +96,7 @@ void __init setup_gptimer0(void)
108 enable_gptimers(TIMER0bit); 96 enable_gptimers(TIMER0bit);
109} 97}
110 98
111static cycle_t bfin_read_gptimer0(void) 99static cycle_t bfin_read_gptimer0(struct clocksource *cs)
112{ 100{
113 return bfin_read_TIMER0_COUNTER(); 101 return bfin_read_TIMER0_COUNTER();
114} 102}
@@ -118,10 +106,16 @@ static struct clocksource bfin_cs_gptimer0 = {
118 .rating = 350, 106 .rating = 350,
119 .read = bfin_read_gptimer0, 107 .read = bfin_read_gptimer0,
120 .mask = CLOCKSOURCE_MASK(32), 108 .mask = CLOCKSOURCE_MASK(32),
121 .shift = 22, 109 .shift = CYC2NS_SCALE_FACTOR,
122 .flags = CLOCK_SOURCE_IS_CONTINUOUS, 110 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
123}; 111};
124 112
113static inline unsigned long long bfin_cs_gptimer0_sched_clock(void)
114{
115 return clocksource_cyc2ns(bfin_read_TIMER0_COUNTER(),
116 bfin_cs_gptimer0.mult, bfin_cs_gptimer0.shift);
117}
118
125static int __init bfin_cs_gptimer0_init(void) 119static int __init bfin_cs_gptimer0_init(void)
126{ 120{
127 setup_gptimer0(); 121 setup_gptimer0();
@@ -138,6 +132,19 @@ static int __init bfin_cs_gptimer0_init(void)
138# define bfin_cs_gptimer0_init() 132# define bfin_cs_gptimer0_init()
139#endif 133#endif
140 134
135
136#if defined(CONFIG_GPTMR0_CLOCKSOURCE) || defined(CONFIG_CYCLES_CLOCKSOURCE)
137/* prefer to use cycles since it has higher rating */
138notrace unsigned long long sched_clock(void)
139{
140#if defined(CONFIG_CYCLES_CLOCKSOURCE)
141 return bfin_cs_cycles_sched_clock();
142#else
143 return bfin_cs_gptimer0_sched_clock();
144#endif
145}
146#endif
147
141#ifdef CONFIG_CORE_TIMER_IRQ_L1 148#ifdef CONFIG_CORE_TIMER_IRQ_L1
142__attribute__((l1_text)) 149__attribute__((l1_text))
143#endif 150#endif
diff --git a/arch/blackfin/kernel/time.c b/arch/blackfin/kernel/time.c
index bd3b53da295..13c1ee3e640 100644
--- a/arch/blackfin/kernel/time.c
+++ b/arch/blackfin/kernel/time.c
@@ -184,11 +184,3 @@ void __init time_init(void)
184 184
185 time_sched_init(timer_interrupt); 185 time_sched_init(timer_interrupt);
186} 186}
187
188/*
189 * Scheduler clock - returns current time in nanosec units.
190 */
191unsigned long long sched_clock(void)
192{
193 return (unsigned long long)jiffies *(NSEC_PER_SEC / HZ);
194}
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 9636bace00e..d3cbcd6bd98 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -119,6 +119,15 @@ static void decode_address(char *buf, unsigned long address)
119 return; 119 return;
120 } 120 }
121 121
122 /*
123 * Don't walk any of the vmas if we are oopsing, it has been known
124 * to cause problems - corrupt vmas (kernel crashes) cause double faults
125 */
126 if (oops_in_progress) {
127 strcat(buf, "/* kernel dynamic memory (maybe user-space) */");
128 return;
129 }
130
122 /* looks like we're off in user-land, so let's walk all the 131 /* looks like we're off in user-land, so let's walk all the
123 * mappings of all our processes and see if we can't be a whee 132 * mappings of all our processes and see if we can't be a whee
124 * bit more specific 133 * bit more specific
@@ -515,6 +524,36 @@ asmlinkage notrace void trap_c(struct pt_regs *fp)
515 break; 524 break;
516 /* External Memory Addressing Error */ 525 /* External Memory Addressing Error */
517 case (SEQSTAT_HWERRCAUSE_EXTERN_ADDR): 526 case (SEQSTAT_HWERRCAUSE_EXTERN_ADDR):
527 if (ANOMALY_05000310) {
528 static unsigned long anomaly_rets;
529
530 if ((fp->pc >= (L1_CODE_START + L1_CODE_LENGTH - 512)) &&
531 (fp->pc < (L1_CODE_START + L1_CODE_LENGTH))) {
532 /*
533 * A false hardware error will happen while fetching at
534 * the L1 instruction SRAM boundary. Ignore it.
535 */
536 anomaly_rets = fp->rets;
537 goto traps_done;
538 } else if (fp->rets == anomaly_rets) {
539 /*
540 * While boundary code returns to a function, at the ret
541 * point, a new false hardware error might occur too based
542 * on tests. Ignore it too.
543 */
544 goto traps_done;
545 } else if ((fp->rets >= (L1_CODE_START + L1_CODE_LENGTH - 512)) &&
546 (fp->rets < (L1_CODE_START + L1_CODE_LENGTH))) {
547 /*
548 * If boundary code calls a function, at the entry point,
549 * a new false hardware error maybe happen based on tests.
550 * Ignore it too.
551 */
552 goto traps_done;
553 } else
554 anomaly_rets = 0;
555 }
556
518 info.si_code = BUS_ADRERR; 557 info.si_code = BUS_ADRERR;
519 sig = SIGBUS; 558 sig = SIGBUS;
520 strerror = KERN_NOTICE HWC_x3(KERN_NOTICE); 559 strerror = KERN_NOTICE HWC_x3(KERN_NOTICE);
@@ -976,12 +1015,12 @@ void dump_bfin_process(struct pt_regs *fp)
976 !((unsigned long)current & 0x3) && current->pid) { 1015 !((unsigned long)current & 0x3) && current->pid) {
977 verbose_printk(KERN_NOTICE "CURRENT PROCESS:\n"); 1016 verbose_printk(KERN_NOTICE "CURRENT PROCESS:\n");
978 if (current->comm >= (char *)FIXED_CODE_START) 1017 if (current->comm >= (char *)FIXED_CODE_START)
979 verbose_printk(KERN_NOTICE "COMM=%s PID=%d\n", 1018 verbose_printk(KERN_NOTICE "COMM=%s PID=%d",
980 current->comm, current->pid); 1019 current->comm, current->pid);
981 else 1020 else
982 verbose_printk(KERN_NOTICE "COMM= invalid\n"); 1021 verbose_printk(KERN_NOTICE "COMM= invalid");
983 1022
984 printk(KERN_NOTICE "CPU = %d\n", current_thread_info()->cpu); 1023 printk(KERN_CONT " CPU=%d\n", current_thread_info()->cpu);
985 if (!((unsigned long)current->mm & 0x3) && (unsigned long)current->mm >= FIXED_CODE_START) 1024 if (!((unsigned long)current->mm & 0x3) && (unsigned long)current->mm >= FIXED_CODE_START)
986 verbose_printk(KERN_NOTICE 1025 verbose_printk(KERN_NOTICE
987 "TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n" 1026 "TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n"
diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S
index f39707c6590..66799e763dc 100644
--- a/arch/blackfin/kernel/vmlinux.lds.S
+++ b/arch/blackfin/kernel/vmlinux.lds.S
@@ -121,8 +121,6 @@ SECTIONS
121 EXIT_DATA 121 EXIT_DATA
122 } 122 }
123 123
124 __l1_lma_start = .;
125
126 .text_l1 L1_CODE_START : AT(LOADADDR(.exit.data) + SIZEOF(.exit.data)) 124 .text_l1 L1_CODE_START : AT(LOADADDR(.exit.data) + SIZEOF(.exit.data))
127 { 125 {
128 . = ALIGN(4); 126 . = ALIGN(4);
@@ -134,9 +132,11 @@ SECTIONS
134 . = ALIGN(4); 132 . = ALIGN(4);
135 __etext_l1 = .; 133 __etext_l1 = .;
136 } 134 }
137 ASSERT (SIZEOF(.text_l1) <= L1_CODE_LENGTH, "L1 text overflow!") 135 __text_l1_lma = LOADADDR(.text_l1);
136 __text_l1_len = SIZEOF(.text_l1);
137 ASSERT (__text_l1_len <= L1_CODE_LENGTH, "L1 text overflow!")
138 138
139 .data_l1 L1_DATA_A_START : AT(LOADADDR(.text_l1) + SIZEOF(.text_l1)) 139 .data_l1 L1_DATA_A_START : AT(__text_l1_lma + __text_l1_len)
140 { 140 {
141 . = ALIGN(4); 141 . = ALIGN(4);
142 __sdata_l1 = .; 142 __sdata_l1 = .;
@@ -152,9 +152,11 @@ SECTIONS
152 . = ALIGN(4); 152 . = ALIGN(4);
153 __ebss_l1 = .; 153 __ebss_l1 = .;
154 } 154 }
155 ASSERT (SIZEOF(.data_l1) <= L1_DATA_A_LENGTH, "L1 data A overflow!") 155 __data_l1_lma = LOADADDR(.data_l1);
156 __data_l1_len = SIZEOF(.data_l1);
157 ASSERT (__data_l1_len <= L1_DATA_A_LENGTH, "L1 data A overflow!")
156 158
157 .data_b_l1 L1_DATA_B_START : AT(LOADADDR(.data_l1) + SIZEOF(.data_l1)) 159 .data_b_l1 L1_DATA_B_START : AT(__data_l1_lma + __data_l1_len)
158 { 160 {
159 . = ALIGN(4); 161 . = ALIGN(4);
160 __sdata_b_l1 = .; 162 __sdata_b_l1 = .;
@@ -167,11 +169,11 @@ SECTIONS
167 . = ALIGN(4); 169 . = ALIGN(4);
168 __ebss_b_l1 = .; 170 __ebss_b_l1 = .;
169 } 171 }
170 ASSERT (SIZEOF(.data_b_l1) <= L1_DATA_B_LENGTH, "L1 data B overflow!") 172 __data_b_l1_lma = LOADADDR(.data_b_l1);
171 173 __data_b_l1_len = SIZEOF(.data_b_l1);
172 __l2_lma_start = LOADADDR(.data_b_l1) + SIZEOF(.data_b_l1); 174 ASSERT (__data_b_l1_len <= L1_DATA_B_LENGTH, "L1 data B overflow!")
173 175
174 .text_data_l2 L2_START : AT(LOADADDR(.data_b_l1) + SIZEOF(.data_b_l1)) 176 .text_data_l2 L2_START : AT(__data_b_l1_lma + __data_b_l1_len)
175 { 177 {
176 . = ALIGN(4); 178 . = ALIGN(4);
177 __stext_l2 = .; 179 __stext_l2 = .;
@@ -193,12 +195,14 @@ SECTIONS
193 . = ALIGN(4); 195 . = ALIGN(4);
194 __ebss_l2 = .; 196 __ebss_l2 = .;
195 } 197 }
196 ASSERT (SIZEOF(.text_data_l2) <= L2_LENGTH, "L2 overflow!") 198 __l2_lma = LOADADDR(.text_data_l2);
199 __l2_len = SIZEOF(.text_data_l2);
200 ASSERT (__l2_len <= L2_LENGTH, "L2 overflow!")
197 201
198 /* Force trailing alignment of our init section so that when we 202 /* Force trailing alignment of our init section so that when we
199 * free our init memory, we don't leave behind a partial page. 203 * free our init memory, we don't leave behind a partial page.
200 */ 204 */
201 . = LOADADDR(.text_data_l2) + SIZEOF(.text_data_l2); 205 . = __l2_lma + __l2_len;
202 . = ALIGN(PAGE_SIZE); 206 . = ALIGN(PAGE_SIZE);
203 ___init_end = .; 207 ___init_end = .;
204 208
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-23 11:25:38 -0400