mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 19:23:57 +08:00
5f7dc5d750
Unlike other alphas, marvel doesn't have real PC-style CMOS clock hardware - RTC accesses are emulated via PAL calls. Unfortunately, for unknown reason these calls work only on CPU #0. So current implementation for arbitrary CPU makes CMOS_READ/WRITE to be executed on CPU #0 via IPI. However, for obvious reason this doesn't work with standard get/set_rtc_time() functions, where a bunch of CMOS accesses is done with disabled interrupts. Solved by making the IPI calls for entire get/set_rtc_time() functions, not for individual CMOS accesses. Which is also a lot more effective performance-wise. The patch is largely based on the code from Jay Estabrook. My changes: - tweak asm-generic/rtc.h by adding a couple of #defines to avoid a massive code duplication in arch/alpha/include/asm/rtc.h; - sys_marvel.c: fix get/set_rtc_time() return values (Jay's FIXMEs). NOTE: this fixes *only* LIB_RTC drivers. Legacy (CONFIG_RTC) driver wont't work on marvel. Actually I think that we should just disable CONFIG_RTC on alpha (maybe in 2.6.30?), like most other arches - AFAIK, all modern distributions use LIB_RTC anyway. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
#ifndef __ALPHA_MACHVEC_H
|
|
#define __ALPHA_MACHVEC_H 1
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* This file gets pulled in by asm/io.h from user space. We don't
|
|
* want most of this escaping.
|
|
*/
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
/* The following structure vectors all of the I/O and IRQ manipulation
|
|
from the generic kernel to the hardware specific backend. */
|
|
|
|
struct task_struct;
|
|
struct mm_struct;
|
|
struct vm_area_struct;
|
|
struct linux_hose_info;
|
|
struct pci_dev;
|
|
struct pci_ops;
|
|
struct pci_controller;
|
|
struct _alpha_agp_info;
|
|
struct rtc_time;
|
|
|
|
struct alpha_machine_vector
|
|
{
|
|
/* This "belongs" down below with the rest of the runtime
|
|
variables, but it is convenient for entry.S if these
|
|
two slots are at the beginning of the struct. */
|
|
unsigned long hae_cache;
|
|
unsigned long *hae_register;
|
|
|
|
int nr_irqs;
|
|
int rtc_port;
|
|
unsigned int max_asn;
|
|
unsigned long max_isa_dma_address;
|
|
unsigned long irq_probe_mask;
|
|
unsigned long iack_sc;
|
|
unsigned long min_io_address;
|
|
unsigned long min_mem_address;
|
|
unsigned long pci_dac_offset;
|
|
|
|
void (*mv_pci_tbi)(struct pci_controller *hose,
|
|
dma_addr_t start, dma_addr_t end);
|
|
|
|
unsigned int (*mv_ioread8)(void __iomem *);
|
|
unsigned int (*mv_ioread16)(void __iomem *);
|
|
unsigned int (*mv_ioread32)(void __iomem *);
|
|
|
|
void (*mv_iowrite8)(u8, void __iomem *);
|
|
void (*mv_iowrite16)(u16, void __iomem *);
|
|
void (*mv_iowrite32)(u32, void __iomem *);
|
|
|
|
u8 (*mv_readb)(const volatile void __iomem *);
|
|
u16 (*mv_readw)(const volatile void __iomem *);
|
|
u32 (*mv_readl)(const volatile void __iomem *);
|
|
u64 (*mv_readq)(const volatile void __iomem *);
|
|
|
|
void (*mv_writeb)(u8, volatile void __iomem *);
|
|
void (*mv_writew)(u16, volatile void __iomem *);
|
|
void (*mv_writel)(u32, volatile void __iomem *);
|
|
void (*mv_writeq)(u64, volatile void __iomem *);
|
|
|
|
void __iomem *(*mv_ioportmap)(unsigned long);
|
|
void __iomem *(*mv_ioremap)(unsigned long, unsigned long);
|
|
void (*mv_iounmap)(volatile void __iomem *);
|
|
int (*mv_is_ioaddr)(unsigned long);
|
|
int (*mv_is_mmio)(const volatile void __iomem *);
|
|
|
|
void (*mv_switch_mm)(struct mm_struct *, struct mm_struct *,
|
|
struct task_struct *);
|
|
void (*mv_activate_mm)(struct mm_struct *, struct mm_struct *);
|
|
|
|
void (*mv_flush_tlb_current)(struct mm_struct *);
|
|
void (*mv_flush_tlb_current_page)(struct mm_struct * mm,
|
|
struct vm_area_struct *vma,
|
|
unsigned long addr);
|
|
|
|
void (*update_irq_hw)(unsigned long, unsigned long, int);
|
|
void (*ack_irq)(unsigned long);
|
|
void (*device_interrupt)(unsigned long vector);
|
|
void (*machine_check)(u64 vector, u64 la);
|
|
|
|
void (*smp_callin)(void);
|
|
void (*init_arch)(void);
|
|
void (*init_irq)(void);
|
|
void (*init_rtc)(void);
|
|
void (*init_pci)(void);
|
|
void (*kill_arch)(int);
|
|
|
|
u8 (*pci_swizzle)(struct pci_dev *, u8 *);
|
|
int (*pci_map_irq)(struct pci_dev *, u8, u8);
|
|
struct pci_ops *pci_ops;
|
|
|
|
struct _alpha_agp_info *(*agp_info)(void);
|
|
|
|
unsigned int (*rtc_get_time)(struct rtc_time *);
|
|
int (*rtc_set_time)(struct rtc_time *);
|
|
|
|
const char *vector_name;
|
|
|
|
/* NUMA information */
|
|
int (*pa_to_nid)(unsigned long);
|
|
int (*cpuid_to_nid)(int);
|
|
unsigned long (*node_mem_start)(int);
|
|
unsigned long (*node_mem_size)(int);
|
|
|
|
/* System specific parameters. */
|
|
union {
|
|
struct {
|
|
unsigned long gru_int_req_bits;
|
|
} cia;
|
|
|
|
struct {
|
|
unsigned long gamma_bias;
|
|
} t2;
|
|
|
|
struct {
|
|
unsigned int route_tab;
|
|
} sio;
|
|
} sys;
|
|
};
|
|
|
|
extern struct alpha_machine_vector alpha_mv;
|
|
|
|
#ifdef CONFIG_ALPHA_GENERIC
|
|
extern int alpha_using_srm;
|
|
#else
|
|
#ifdef CONFIG_ALPHA_SRM
|
|
#define alpha_using_srm 1
|
|
#else
|
|
#define alpha_using_srm 0
|
|
#endif
|
|
#endif /* GENERIC */
|
|
|
|
#endif
|
|
#endif /* __ALPHA_MACHVEC_H */
|