a4184174be
All EV4 machines are already gone, and the remaining EV5 based machines all support the slightly more modern EV56 generation as well. Debian only supports EV56 and later. Drop both of these and build kernels optimized for EV56 and higher when the "generic" options is selected, tuning for an out-of-order EV6 pipeline, same as Debian userspace. Since this was the only supported architecture without 8-bit and 16-bit stores, common kernel code no longer has to worry about aligning struct members, and existing workarounds from the block and tty layers can be removed. The alpha memory management code no longer needs an abstraction for the differences between EV4 and EV5+. Link: https://lists.debian.org/debian-alpha/2023/05/msg00009.html Acked-by: Paul E. McKenney <paulmck@kernel.org> Acked-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
131 lines
3.3 KiB
C
131 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ALPHA_MACHVEC_H
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#define __ALPHA_MACHVEC_H 1
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#include <linux/types.h>
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/*
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* This file gets pulled in by asm/io.h from user space. We don't
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* want most of this escaping.
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*/
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#ifdef __KERNEL__
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/* The following structure vectors all of the I/O and IRQ manipulation
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from the generic kernel to the hardware specific backend. */
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struct task_struct;
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struct mm_struct;
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struct vm_area_struct;
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struct linux_hose_info;
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struct pci_dev;
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struct pci_ops;
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struct pci_controller;
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struct _alpha_agp_info;
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struct rtc_time;
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struct alpha_machine_vector
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{
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/* This "belongs" down below with the rest of the runtime
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variables, but it is convenient for entry.S if these
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two slots are at the beginning of the struct. */
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unsigned long hae_cache;
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unsigned long *hae_register;
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int nr_irqs;
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int rtc_port;
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int rtc_boot_cpu_only;
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unsigned int max_asn;
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unsigned long max_isa_dma_address;
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unsigned long irq_probe_mask;
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unsigned long iack_sc;
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unsigned long min_io_address;
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unsigned long min_mem_address;
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unsigned long pci_dac_offset;
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void (*mv_pci_tbi)(struct pci_controller *hose,
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dma_addr_t start, dma_addr_t end);
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u8 (*mv_ioread8)(const void __iomem *);
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u16 (*mv_ioread16)(const void __iomem *);
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u32 (*mv_ioread32)(const void __iomem *);
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u64 (*mv_ioread64)(const void __iomem *);
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void (*mv_iowrite8)(u8, void __iomem *);
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void (*mv_iowrite16)(u16, void __iomem *);
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void (*mv_iowrite32)(u32, void __iomem *);
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void (*mv_iowrite64)(u64, void __iomem *);
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u8 (*mv_readb)(const volatile void __iomem *);
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u16 (*mv_readw)(const volatile void __iomem *);
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u32 (*mv_readl)(const volatile void __iomem *);
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u64 (*mv_readq)(const volatile void __iomem *);
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void (*mv_writeb)(u8, volatile void __iomem *);
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void (*mv_writew)(u16, volatile void __iomem *);
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void (*mv_writel)(u32, volatile void __iomem *);
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void (*mv_writeq)(u64, volatile void __iomem *);
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void __iomem *(*mv_ioportmap)(unsigned long);
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void __iomem *(*mv_ioremap)(unsigned long, unsigned long);
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void (*mv_iounmap)(volatile void __iomem *);
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int (*mv_is_ioaddr)(unsigned long);
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int (*mv_is_mmio)(const volatile void __iomem *);
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void (*update_irq_hw)(unsigned long, unsigned long, int);
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void (*ack_irq)(unsigned long);
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void (*device_interrupt)(unsigned long vector);
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void (*machine_check)(unsigned long vector, unsigned long la);
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void (*smp_callin)(void);
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void (*init_arch)(void);
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void (*init_irq)(void);
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void (*init_rtc)(void);
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void (*init_pci)(void);
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void (*kill_arch)(int);
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u8 (*pci_swizzle)(struct pci_dev *, u8 *);
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int (*pci_map_irq)(const struct pci_dev *, u8, u8);
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struct pci_ops *pci_ops;
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struct _alpha_agp_info *(*agp_info)(void);
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const char *vector_name;
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/* System specific parameters. */
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union {
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struct {
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unsigned long gru_int_req_bits;
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} cia;
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struct {
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unsigned long gamma_bias;
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} t2;
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struct {
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unsigned int route_tab;
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} sio;
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} sys;
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};
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extern struct alpha_machine_vector alpha_mv;
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#ifdef CONFIG_ALPHA_GENERIC
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extern int alpha_using_srm;
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extern int alpha_using_qemu;
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#else
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# ifdef CONFIG_ALPHA_SRM
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# define alpha_using_srm 1
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# else
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# define alpha_using_srm 0
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# endif
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# ifdef CONFIG_ALPHA_QEMU
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# define alpha_using_qemu 1
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# else
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# define alpha_using_qemu 0
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# endif
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#endif /* GENERIC */
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#endif /* __KERNEL__ */
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#endif /* __ALPHA_MACHVEC_H */
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