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[PATCH] ppc32 8xx: Added setbitsXX/clrbitsXX macro for read-modify-write operations 

This adds setbitsXX/clrbitsXX macro for read-modify-write operations
and converts the 8xx core and drivers to use them.

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Vitaly Bordug 2006-01-15 17:30:29 +03:00 committed by Paul Mackerras
parent 63dafe5728
commit 0ce928e1b2
4 changed files with 18 additions and 11 deletions
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6
arch/ppc/8xx_io/commproc.c
View File

@ -73,7 +73,7 @@ cpm_mask_irq(unsigned int irq)
{
int cpm_vec = irq - CPM_IRQ_OFFSET;
out_be32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr, in_be32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr) & ~(1 << cpm_vec));
clrbits32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr, (1 << cpm_vec));
}
static void
@ -81,7 +81,7 @@ cpm_unmask_irq(unsigned int irq)
{
int cpm_vec = irq - CPM_IRQ_OFFSET;
out_be32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr, in_be32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr) | (1 << cpm_vec));
setbits32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr, (1 << cpm_vec));
}
static void
@ -198,7 +198,7 @@ cpm_interrupt_init(void)
if (setup_irq(CPM_IRQ_OFFSET + CPMVEC_ERROR, &cpm_error_irqaction))
panic("Could not allocate CPM error IRQ!");
out_be32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cicr, in_be32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cicr) | CICR_IEN);
setbits32(&((immap_t *)IMAP_ADDR)->im_cpic.cpic_cicr, CICR_IEN);
}
/*

13
arch/ppc/syslib/m8xx_setup.c
View File

@ -140,9 +140,11 @@ void __init __attribute__ ((weak))
init_internal_rtc(void)
{
/* Disable the RTC one second and alarm interrupts. */
out_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, in_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc) & ~(RTCSC_SIE | RTCSC_ALE));
clrbits16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, (RTCSC_SIE | RTCSC_ALE));
/* Enable the RTC */
out_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, in_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc) | (RTCSC_RTF | RTCSC_RTE));
setbits16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, (RTCSC_RTF | RTCSC_RTE));
}
/* The decrementer counts at the system (internal) clock frequency divided by
@ -159,8 +161,7 @@ void __init m8xx_calibrate_decr(void)
out_be32(&((immap_t *)IMAP_ADDR)->im_clkrstk.cark_sccrk, KAPWR_KEY);
/* Force all 8xx processors to use divide by 16 processor clock. */
out_be32(&((immap_t *)IMAP_ADDR)->im_clkrst.car_sccr,
in_be32(&((immap_t *)IMAP_ADDR)->im_clkrst.car_sccr)|0x02000000);
setbits32(&((immap_t *)IMAP_ADDR)->im_clkrst.car_sccr, 0x02000000);
/* Processor frequency is MHz.
* The value 'fp' is the number of decrementer ticks per second.
*/
@ -239,8 +240,8 @@ m8xx_restart(char *cmd)
__volatile__ unsigned char dummy;
local_irq_disable();
out_be32(&((immap_t *)IMAP_ADDR)->im_clkrst.car_plprcr, in_be32(&((immap_t *)IMAP_ADDR)->im_clkrst.car_plprcr) | 0x00000080);
setbits32(&((immap_t *)IMAP_ADDR)->im_clkrst.car_plprcr, 0x00000080);
/* Clear the ME bit in MSR to cause checkstop on machine check
*/
mtmsr(mfmsr() & ~0x1000);
@ -310,8 +311,8 @@ m8xx_init_IRQ(void)
i8259_init(0);
/* The i8259 cascade interrupt must be level sensitive. */
out_be32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_siel, in_be32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_siel & ~(0x80000000 >> ISA_BRIDGE_INT)));
clrbits32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_siel, (0x80000000 >> ISA_BRIDGE_INT));
if (setup_irq(ISA_BRIDGE_INT, &mbx_i8259_irqaction))
enable_irq(ISA_BRIDGE_INT);
#endif /* CONFIG_PCI */

3
arch/ppc/syslib/m8xx_wdt.c
View File

@ -41,8 +41,7 @@ static irqreturn_t m8xx_wdt_interrupt(int irq, void *dev, struct pt_regs *regs)
m8xx_wdt_reset();
out_be16(&imap->im_sit.sit_piscr, in_be16(&imap->im_sit.sit_piscr) | PISCR_PS); /* clear irq */
setbits16(&imap->im_sit.sit_piscr, PISCR_PS);
return IRQ_HANDLED;
}

7
include/asm-ppc/io.h
View File

@ -575,4 +575,11 @@ extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
*/
#define xlate_dev_kmem_ptr(p) p
/* access ports */
#define setbits32(_addr, _v) out_be32((_addr), in_be32(_addr) | (_v))
#define clrbits32(_addr, _v) out_be32((_addr), in_be32(_addr) & ~(_v))
#define setbits16(_addr, _v) out_be16((_addr), in_be16(_addr) | (_v))
#define clrbits16(_addr, _v) out_be16((_addr), in_be16(_addr) & ~(_v))
#endif /* __KERNEL__ */