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| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/m68k/amiga/amiints.c | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'arch/m68k/amiga/amiints.c')
| -rw-r--r-- | arch/m68k/amiga/amiints.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/arch/m68k/amiga/amiints.c b/arch/m68k/amiga/amiints.c new file mode 100644 index 000000000..7ff739e94 --- /dev/null +++ b/arch/m68k/amiga/amiints.c @@ -0,0 +1,174 @@ +/* + * Amiga Linux interrupt handling code + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/errno.h> +#include <linux/irq.h> + +#include <asm/irq.h> +#include <asm/traps.h> +#include <asm/amigahw.h> +#include <asm/amigaints.h> +#include <asm/amipcmcia.h> + + +/* + * Enable/disable a particular machine specific interrupt source. + * Note that this may affect other interrupts in case of a shared interrupt. + * This function should only be called for a _very_ short time to change some + * internal data, that may not be changed by the interrupt at the same time. + */ + +static void amiga_irq_enable(struct irq_data *data) +{ + amiga_custom.intena = IF_SETCLR | (1 << (data->irq - IRQ_USER)); +} + +static void amiga_irq_disable(struct irq_data *data) +{ + amiga_custom.intena = 1 << (data->irq - IRQ_USER); +} + +static struct irq_chip amiga_irq_chip = { + .name = "amiga", + .irq_enable = amiga_irq_enable, + .irq_disable = amiga_irq_disable, +}; + + +/* + * The builtin Amiga hardware interrupt handlers. + */ + +static void ami_int1(struct irq_desc *desc) +{ + unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; + + /* if serial transmit buffer empty, interrupt */ + if (ints & IF_TBE) { + amiga_custom.intreq = IF_TBE; + generic_handle_irq(IRQ_AMIGA_TBE); + } + + /* if floppy disk transfer complete, interrupt */ + if (ints & IF_DSKBLK) { + amiga_custom.intreq = IF_DSKBLK; + generic_handle_irq(IRQ_AMIGA_DSKBLK); + } + + /* if software interrupt set, interrupt */ + if (ints & IF_SOFT) { + amiga_custom.intreq = IF_SOFT; + generic_handle_irq(IRQ_AMIGA_SOFT); + } +} + +static void ami_int3(struct irq_desc *desc) +{ + unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; + + /* if a blitter interrupt */ + if (ints & IF_BLIT) { + amiga_custom.intreq = IF_BLIT; + generic_handle_irq(IRQ_AMIGA_BLIT); + } + + /* if a copper interrupt */ + if (ints & IF_COPER) { + amiga_custom.intreq = IF_COPER; + generic_handle_irq(IRQ_AMIGA_COPPER); + } + + /* if a vertical blank interrupt */ + if (ints & IF_VERTB) { + amiga_custom.intreq = IF_VERTB; + generic_handle_irq(IRQ_AMIGA_VERTB); + } +} + +static void ami_int4(struct irq_desc *desc) +{ + unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; + + /* if audio 0 interrupt */ + if (ints & IF_AUD0) { + amiga_custom.intreq = IF_AUD0; + generic_handle_irq(IRQ_AMIGA_AUD0); + } + + /* if audio 1 interrupt */ + if (ints & IF_AUD1) { + amiga_custom.intreq = IF_AUD1; + generic_handle_irq(IRQ_AMIGA_AUD1); + } + + /* if audio 2 interrupt */ + if (ints & IF_AUD2) { + amiga_custom.intreq = IF_AUD2; + generic_handle_irq(IRQ_AMIGA_AUD2); + } + + /* if audio 3 interrupt */ + if (ints & IF_AUD3) { + amiga_custom.intreq = IF_AUD3; + generic_handle_irq(IRQ_AMIGA_AUD3); + } +} + +static void ami_int5(struct irq_desc *desc) +{ + unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; + + /* if serial receive buffer full interrupt */ + if (ints & IF_RBF) { + /* acknowledge of IF_RBF must be done by the serial interrupt */ + generic_handle_irq(IRQ_AMIGA_RBF); + } + + /* if a disk sync interrupt */ + if (ints & IF_DSKSYN) { + amiga_custom.intreq = IF_DSKSYN; + generic_handle_irq(IRQ_AMIGA_DSKSYN); + } +} + + +/* + * void amiga_init_IRQ(void) + * + * Parameters: None + * + * Returns: Nothing + * + * This function should be called during kernel startup to initialize + * the amiga IRQ handling routines. + */ + +void __init amiga_init_IRQ(void) +{ + m68k_setup_irq_controller(&amiga_irq_chip, handle_simple_irq, IRQ_USER, + AMI_STD_IRQS); + + irq_set_chained_handler(IRQ_AUTO_1, ami_int1); + irq_set_chained_handler(IRQ_AUTO_3, ami_int3); + irq_set_chained_handler(IRQ_AUTO_4, ami_int4); + irq_set_chained_handler(IRQ_AUTO_5, ami_int5); + + /* turn off PCMCIA interrupts */ + if (AMIGAHW_PRESENT(PCMCIA)) + gayle.inten = GAYLE_IRQ_IDE; + + /* turn off all interrupts and enable the master interrupt bit */ + amiga_custom.intena = 0x7fff; + amiga_custom.intreq = 0x7fff; + amiga_custom.intena = IF_SETCLR | IF_INTEN; + + cia_init_IRQ(&ciaa_base); + cia_init_IRQ(&ciab_base); +} |
