arch/arm/mach-omap2/common.h

   1 /*
   2  * Header for code common to all OMAP2+ machines.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the
   6  * Free Software Foundation; either version 2 of the License, or (at your
   7  * option) any later version.
   8  *
   9  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  10  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
  12  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  13  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  14  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  15  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  16  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  17  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  18  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  19  *
  20  * You should have received a copy of the  GNU General Public License along
  21  * with this program; if not, write  to the Free Software Foundation, Inc.,
  22  * 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #ifndef __ARCH_ARM_MACH_OMAP2PLUS_COMMON_H
  26 #define __ARCH_ARM_MACH_OMAP2PLUS_COMMON_H
  27 #ifndef __ASSEMBLER__
  28
  29 #include <linux/delay.h>
  30 #include <plat/common.h>
  31 #include <asm/proc-fns.h>
  32
  33 #ifdef CONFIG_SOC_OMAP2420
  34 extern void omap242x_map_common_io(void);
  35 #else
  36 static inline void omap242x_map_common_io(void)
  37 {
  38 }
  39 #endif
  40
  41 #ifdef CONFIG_SOC_OMAP2430
  42 extern void omap243x_map_common_io(void);
  43 #else
  44 static inline void omap243x_map_common_io(void)
  45 {
  46 }
  47 #endif
  48
  49 #ifdef CONFIG_ARCH_OMAP3
  50 extern void omap34xx_map_common_io(void);
  51 #else
  52 static inline void omap34xx_map_common_io(void)
  53 {
  54 }
  55 #endif
  56
  57 #ifdef CONFIG_SOC_OMAPTI81XX
  58 extern void omapti81xx_map_common_io(void);
  59 #else
  60 static inline void omapti81xx_map_common_io(void)
  61 {
  62 }
  63 #endif
  64
  65 #ifdef CONFIG_SOC_OMAPAM33XX
  66 extern void omapam33xx_map_common_io(void);
  67 #else
  68 static inline void omapam33xx_map_common_io(void)
  69 {
  70 }
  71 #endif
  72
  73 #ifdef CONFIG_ARCH_OMAP4
  74 extern void omap44xx_map_common_io(void);
  75 #else
  76 static inline void omap44xx_map_common_io(void)
  77 {
  78 }
  79 #endif
  80
  81 extern void omap2_init_common_infrastructure(void);
  82
  83 extern struct sys_timer omap2_timer;
  84 extern struct sys_timer omap3_timer;
  85 extern struct sys_timer omap3_secure_timer;
  86 extern struct sys_timer omap4_timer;
  87
  88 void omap2420_init_early(void);
  89 void omap2430_init_early(void);
  90 void omap3430_init_early(void);
  91 void omap35xx_init_early(void);
  92 void omap3630_init_early(void);
  93 void omap3_init_early(void);    /* Do not use this one */
  94 void am35xx_init_early(void);
  95 void ti81xx_init_early(void);
  96 void omap4430_init_early(void);
  97 void omap_prcm_restart(char, const char *);
  98
  99 /*
 100  * IO bases for various OMAP processors
 101  * Except the tap base, rest all the io bases
 102  * listed are physical addresses.
 103  */
 104 struct omap_globals {
 105         u32             class;          /* OMAP class to detect */
 106         void __iomem    *tap;           /* Control module ID code */
 107         void __iomem    *sdrc;           /* SDRAM Controller */
 108         void __iomem    *sms;            /* SDRAM Memory Scheduler */
 109         void __iomem    *ctrl;           /* System Control Module */
 110         void __iomem    *ctrl_pad;      /* PAD Control Module */
 111         void __iomem    *prm;            /* Power and Reset Management */
 112         void __iomem    *cm;             /* Clock Management */
 113         void __iomem    *cm2;
 114 };
 115
 116 void omap2_set_globals_242x(void);
 117 void omap2_set_globals_243x(void);
 118 void omap2_set_globals_3xxx(void);
 119 void omap2_set_globals_443x(void);
 120 void omap2_set_globals_ti81xx(void);
 121 void omap2_set_globals_am33xx(void);
 122
 123 /* These get called from omap2_set_globals_xxxx(), do not call these */
 124 void omap2_set_globals_tap(struct omap_globals *);
 125 void omap2_set_globals_sdrc(struct omap_globals *);
 126 void omap2_set_globals_control(struct omap_globals *);
 127 void omap2_set_globals_prcm(struct omap_globals *);
 128
 129 void omap242x_map_io(void);
 130 void omap243x_map_io(void);
 131 void omap3_map_io(void);
 132 void am33xx_map_io(void);
 133 void omap4_map_io(void);
 134 void ti81xx_map_io(void);
 135 void omap_barriers_init(void);
 136
 137 /**
 138  * omap_test_timeout - busy-loop, testing a condition
 139  * @cond: condition to test until it evaluates to true
 140  * @timeout: maximum number of microseconds in the timeout
 141  * @index: loop index (integer)
 142  *
 143  * Loop waiting for @cond to become true or until at least @timeout
 144  * microseconds have passed.  To use, define some integer @index in the
 145  * calling code.  After running, if @index == @timeout, then the loop has
 146  * timed out.
 147  */
 148 #define omap_test_timeout(cond, timeout, index)                 \
 149 ({                                                              \
 150         for (index = 0; index < timeout; index++) {             \
 151                 if (cond)                                       \
 152                         break;                                  \
 153                 udelay(1);                                      \
 154         }                                                       \
 155 })
 156
 157 extern struct device *omap2_get_mpuss_device(void);
 158 extern struct device *omap2_get_iva_device(void);
 159 extern struct device *omap2_get_l3_device(void);
 160 extern struct device *omap4_get_dsp_device(void);
 161
 162 void omap2_init_irq(void);
 163 void omap3_init_irq(void);
 164 void ti81xx_init_irq(void);
 165 extern int omap_irq_pending(void);
 166 void omap_intc_save_context(void);
 167 void omap_intc_restore_context(void);
 168 void omap3_intc_suspend(void);
 169 void omap3_intc_prepare_idle(void);
 170 void omap3_intc_resume_idle(void);
 171 void omap2_intc_handle_irq(struct pt_regs *regs);
 172 void omap3_intc_handle_irq(struct pt_regs *regs);
 173
 174 #ifdef CONFIG_CACHE_L2X0
 175 extern void __iomem *omap4_get_l2cache_base(void);
 176 #endif
 177
 178 #ifdef CONFIG_SMP
 179 extern void __iomem *omap4_get_scu_base(void);
 180 #else
 181 static inline void __iomem *omap4_get_scu_base(void)
 182 {
 183         return NULL;
 184 }
 185 #endif
 186
 187 extern void __init gic_init_irq(void);
 188 extern void omap_smc1(u32 fn, u32 arg);
 189 extern void __iomem *omap4_get_sar_ram_base(void);
 190 extern void omap_do_wfi(void);
 191
 192 #ifdef CONFIG_SMP
 193 /* Needed for secondary core boot */
 194 extern void omap_secondary_startup(void);
 195 extern u32 omap_modify_auxcoreboot0(u32 set_mask, u32 clear_mask);
 196 extern void omap_auxcoreboot_addr(u32 cpu_addr);
 197 extern u32 omap_read_auxcoreboot0(void);
 198 #endif
 199
 200 #if defined(CONFIG_SMP) && defined(CONFIG_PM)
 201 extern int omap4_mpuss_init(void);
 202 extern int omap4_enter_lowpower(unsigned int cpu, unsigned int power_state);
 203 extern int omap4_finish_suspend(unsigned long cpu_state);
 204 extern void omap4_cpu_resume(void);
 205 extern int omap4_hotplug_cpu(unsigned int cpu, unsigned int power_state);
 206 extern u32 omap4_mpuss_read_prev_context_state(void);
 207 #else
 208 static inline int omap4_enter_lowpower(unsigned int cpu,
 209                                         unsigned int power_state)
 210 {
 211         cpu_do_idle();
 212         return 0;
 213 }
 214
 215 static inline int omap4_hotplug_cpu(unsigned int cpu, unsigned int power_state)
 216 {
 217         cpu_do_idle();
 218         return 0;
 219 }
 220
 221 static inline int omap4_mpuss_init(void)
 222 {
 223         return 0;
 224 }
 225
 226 static inline int omap4_finish_suspend(unsigned long cpu_state)
 227 {
 228         return 0;
 229 }
 230
 231 static inline void omap4_cpu_resume(void)
 232 {}
 233
 234 static inline u32 omap4_mpuss_read_prev_context_state(void)
 235 {
 236         return 0;
 237 }
 238 #endif
 239 #endif /* __ASSEMBLER__ */
 240 #endif /* __ARCH_ARM_MACH_OMAP2PLUS_COMMON_H */