539eb11e6e
As part of the i386 conversion to the generic timekeeping infrastructure, this introduces a new tsc.c file. The code in this file replaces the TSC initialization, management and access code currently in timer_tsc.c (which will be removed) that we want to preserve. The code also introduces the following functionality: o tsc_khz: like cpu_khz but stores the TSC frequency on systems that do not change TSC frequency w/ CPU frequency o check/mark_tsc_unstable: accessor/modifier flag for TSC timekeeping usability o minor cleanups to calibration math. This patch also includes a one line __cpuinitdata fix from Zwane Mwaikambo. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
121 lines
5.3 KiB
C
121 lines
5.3 KiB
C
#ifndef __ASM_MACH_MPPARSE_H
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#define __ASM_MACH_MPPARSE_H
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#include <mach_apic.h>
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#include <asm/tsc.h>
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extern int use_cyclone;
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#ifdef CONFIG_X86_SUMMIT_NUMA
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extern void setup_summit(void);
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#else
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#define setup_summit() {}
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#endif
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static inline void mpc_oem_bus_info(struct mpc_config_bus *m, char *name,
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struct mpc_config_translation *translation)
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{
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Dprintk("Bus #%d is %s\n", m->mpc_busid, name);
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}
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static inline void mpc_oem_pci_bus(struct mpc_config_bus *m,
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struct mpc_config_translation *translation)
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{
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}
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static inline int mps_oem_check(struct mp_config_table *mpc, char *oem,
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char *productid)
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{
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if (!strncmp(oem, "IBM ENSW", 8) &&
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(!strncmp(productid, "VIGIL SMP", 9)
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|| !strncmp(productid, "EXA", 3)
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|| !strncmp(productid, "RUTHLESS SMP", 12))){
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mark_tsc_unstable();
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use_cyclone = 1; /*enable cyclone-timer*/
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setup_summit();
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return 1;
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}
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return 0;
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}
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/* Hook from generic ACPI tables.c */
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static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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if (!strncmp(oem_id, "IBM", 3) &&
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(!strncmp(oem_table_id, "SERVIGIL", 8)
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|| !strncmp(oem_table_id, "EXA", 3))){
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mark_tsc_unstable();
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use_cyclone = 1; /*enable cyclone-timer*/
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setup_summit();
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return 1;
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}
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return 0;
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}
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struct rio_table_hdr {
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unsigned char version; /* Version number of this data structure */
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/* Version 3 adds chassis_num & WP_index */
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unsigned char num_scal_dev; /* # of Scalability devices (Twisters for Vigil) */
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unsigned char num_rio_dev; /* # of RIO I/O devices (Cyclones and Winnipegs) */
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} __attribute__((packed));
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struct scal_detail {
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unsigned char node_id; /* Scalability Node ID */
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unsigned long CBAR; /* Address of 1MB register space */
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unsigned char port0node; /* Node ID port connected to: 0xFF=None */
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unsigned char port0port; /* Port num port connected to: 0,1,2, or 0xFF=None */
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unsigned char port1node; /* Node ID port connected to: 0xFF = None */
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unsigned char port1port; /* Port num port connected to: 0,1,2, or 0xFF=None */
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unsigned char port2node; /* Node ID port connected to: 0xFF = None */
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unsigned char port2port; /* Port num port connected to: 0,1,2, or 0xFF=None */
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unsigned char chassis_num; /* 1 based Chassis number (1 = boot node) */
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} __attribute__((packed));
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struct rio_detail {
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unsigned char node_id; /* RIO Node ID */
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unsigned long BBAR; /* Address of 1MB register space */
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unsigned char type; /* Type of device */
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unsigned char owner_id; /* For WPEG: Node ID of Cyclone that owns this WPEG*/
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/* For CYC: Node ID of Twister that owns this CYC */
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unsigned char port0node; /* Node ID port connected to: 0xFF=None */
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unsigned char port0port; /* Port num port connected to: 0,1,2, or 0xFF=None */
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unsigned char port1node; /* Node ID port connected to: 0xFF=None */
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unsigned char port1port; /* Port num port connected to: 0,1,2, or 0xFF=None */
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unsigned char first_slot; /* For WPEG: Lowest slot number below this WPEG */
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/* For CYC: 0 */
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unsigned char status; /* For WPEG: Bit 0 = 1 : the XAPIC is used */
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/* = 0 : the XAPIC is not used, ie:*/
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/* ints fwded to another XAPIC */
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/* Bits1:7 Reserved */
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/* For CYC: Bits0:7 Reserved */
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unsigned char WP_index; /* For WPEG: WPEG instance index - lower ones have */
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/* lower slot numbers/PCI bus numbers */
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/* For CYC: No meaning */
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unsigned char chassis_num; /* 1 based Chassis number */
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/* For LookOut WPEGs this field indicates the */
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/* Expansion Chassis #, enumerated from Boot */
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/* Node WPEG external port, then Boot Node CYC */
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/* external port, then Next Vigil chassis WPEG */
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/* external port, etc. */
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/* Shared Lookouts have only 1 chassis number (the */
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/* first one assigned) */
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} __attribute__((packed));
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typedef enum {
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CompatTwister = 0, /* Compatibility Twister */
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AltTwister = 1, /* Alternate Twister of internal 8-way */
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CompatCyclone = 2, /* Compatibility Cyclone */
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AltCyclone = 3, /* Alternate Cyclone of internal 8-way */
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CompatWPEG = 4, /* Compatibility WPEG */
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AltWPEG = 5, /* Second Planar WPEG */
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LookOutAWPEG = 6, /* LookOut WPEG */
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LookOutBWPEG = 7, /* LookOut WPEG */
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} node_type;
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static inline int is_WPEG(struct rio_detail *rio){
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return (rio->type == CompatWPEG || rio->type == AltWPEG ||
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rio->type == LookOutAWPEG || rio->type == LookOutBWPEG);
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}
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#endif /* __ASM_MACH_MPPARSE_H */
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