115 static inline int get_mfp_bit( unsigned irq, int type )  in get_mfp_bit()  argument
119 	mask = 1 << (irq & 7);  in get_mfp_bit()
121 		  ((irq & 8) >> 2) + (((irq-8) & 16) << 3);  in get_mfp_bit()
125 static inline void set_mfp_bit( unsigned irq, int type )  in set_mfp_bit()  argument
129 	mask = 1 << (irq & 7);  in set_mfp_bit()
131 		  ((irq & 8) >> 2) + (((irq-8) & 16) << 3);  in set_mfp_bit()
136 static inline void clear_mfp_bit( unsigned irq, int type )  in clear_mfp_bit()  argument
140 	mask = ~(1 << (irq & 7));  in clear_mfp_bit()
142 		  ((irq & 8) >> 2) + (((irq-8) & 16) << 3);  in clear_mfp_bit()
157 static inline void atari_enable_irq( unsigned irq )  in atari_enable_irq()  argument
160 	if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return;  in atari_enable_irq()
161 	set_mfp_bit( irq, MFP_MASK );  in atari_enable_irq()
164 static inline void atari_disable_irq( unsigned irq )  in atari_disable_irq()  argument
167 	if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return;  in atari_disable_irq()
168 	clear_mfp_bit( irq, MFP_MASK );  in atari_disable_irq()
176 static inline void atari_turnon_irq( unsigned irq )  in atari_turnon_irq()  argument
179 	if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return;  in atari_turnon_irq()
180 	set_mfp_bit( irq, MFP_ENABLE );  in atari_turnon_irq()
183 static inline void atari_turnoff_irq( unsigned irq )  in atari_turnoff_irq()  argument
186 	if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return;  in atari_turnoff_irq()
187 	clear_mfp_bit( irq, MFP_ENABLE );  in atari_turnoff_irq()
188 	clear_mfp_bit( irq, MFP_PENDING );  in atari_turnoff_irq()
191 static inline void atari_clear_pending_irq( unsigned irq )  in atari_clear_pending_irq()  argument
194 	if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return;  in atari_clear_pending_irq()
195 	clear_mfp_bit( irq, MFP_PENDING );  in atari_clear_pending_irq()
198 static inline int atari_irq_pending( unsigned irq )  in atari_irq_pending()  argument
201 	if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return( 0 );  in atari_irq_pending()
202 	return( get_mfp_bit( irq, MFP_PENDING ) );  in atari_irq_pending()