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linux/drivers/pci/hotplug/ibmphp.h
Lukas Wunner 125450f814 PCI: hotplug: Embed hotplug_slot 
When the PCI hotplug core and its first user, cpqphp, were introduced in
February 2002 with historic commit a8a2069f432c, cpqphp allocated a slot
struct for its internal use plus a hotplug_slot struct to be registered
with the hotplug core and linked the two with pointers:
https://git.kernel.org/tglx/history/c/a8a2069f432c

Nowadays, the predominant pattern in the tree is to embed ("subclass")
such structures in one another and cast to the containing struct with
container_of().  But it wasn't until July 2002 that container_of() was
introduced with historic commit ec4f214232cf:
https://git.kernel.org/tglx/history/c/ec4f214232cf

pnv_php, introduced in 2016, did the right thing and embedded struct
hotplug_slot in its internal struct pnv_php_slot, but all other drivers
cargo-culted cpqphp's design and linked separate structs with pointers.

Embedding structs is preferrable to linking them with pointers because
it requires fewer allocations, thereby reducing overhead and simplifying
error paths.  Casting an embedded struct to the containing struct
becomes a cheap subtraction rather than a dereference.  And having fewer
pointers reduces the risk of them pointing nowhere either accidentally
or due to an attack.

Convert all drivers to embed struct hotplug_slot in their internal slot
struct.  The "private" pointer in struct hotplug_slot thereby becomes
unused, so drop it.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>  # drivers/pci/hotplug/rpa*
Acked-by: Sebastian Ott <sebott@linux.ibm.com>        # drivers/pci/hotplug/s390*
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> # drivers/platform/x86
Cc: Len Brown <lenb@kernel.org>
Cc: Scott Murray <scott@spiteful.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Oliver OHalloran <oliveroh@au1.ibm.com>
Cc: Gavin Shan <gwshan@linux.vnet.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Corentin Chary <corentin.chary@gmail.com>
Cc: Darren Hart <dvhart@infradead.org>
2018-09-18 17:52:15 -05:00

752 lines
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/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef __IBMPHP_H
#define __IBMPHP_H
/*
* IBM Hot Plug Controller Driver
*
* Written By: Jyoti Shah, Tong Yu, Irene Zubarev, IBM Corporation
*
* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
* Copyright (C) 2001-2003 IBM Corp.
*
* All rights reserved.
*
* Send feedback to <gregkh@us.ibm.com>
*
*/
#include <linux/pci_hotplug.h>
extern int ibmphp_debug;
#if !defined(MODULE)
#define MY_NAME "ibmphpd"
#else
#define MY_NAME THIS_MODULE->name
#endif
#define debug(fmt, arg...) do { if (ibmphp_debug == 1) printk(KERN_DEBUG "%s: " fmt, MY_NAME, ## arg); } while (0)
#define debug_pci(fmt, arg...) do { if (ibmphp_debug) printk(KERN_DEBUG "%s: " fmt, MY_NAME, ## arg); } while (0)
#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME, ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
/* EBDA stuff */
/***********************************************************
* SLOT CAPABILITY *
***********************************************************/
#define EBDA_SLOT_133_MAX 0x20
#define EBDA_SLOT_100_MAX 0x10
#define EBDA_SLOT_66_MAX 0x02
#define EBDA_SLOT_PCIX_CAP 0x08
/************************************************************
* RESOURCE TYPE *
************************************************************/
#define EBDA_RSRC_TYPE_MASK 0x03
#define EBDA_IO_RSRC_TYPE 0x00
#define EBDA_MEM_RSRC_TYPE 0x01
#define EBDA_PFM_RSRC_TYPE 0x03
#define EBDA_RES_RSRC_TYPE 0x02
/*************************************************************
* IO RESTRICTION TYPE *
*************************************************************/
#define EBDA_IO_RESTRI_MASK 0x0c
#define EBDA_NO_RESTRI 0x00
#define EBDA_AVO_VGA_ADDR 0x04
#define EBDA_AVO_VGA_ADDR_AND_ALIA 0x08
#define EBDA_AVO_ISA_ADDR 0x0c
/**************************************************************
* DEVICE TYPE DEF *
**************************************************************/
#define EBDA_DEV_TYPE_MASK 0x10
#define EBDA_PCI_DEV 0x10
#define EBDA_NON_PCI_DEV 0x00
/***************************************************************
* PRIMARY DEF DEFINITION *
***************************************************************/
#define EBDA_PRI_DEF_MASK 0x20
#define EBDA_PRI_PCI_BUS_INFO 0x20
#define EBDA_NORM_DEV_RSRC_INFO 0x00
//--------------------------------------------------------------
// RIO TABLE DATA STRUCTURE
//--------------------------------------------------------------
struct rio_table_hdr {
u8 ver_num;
u8 scal_count;
u8 riodev_count;
u16 offset;
};
//-------------------------------------------------------------
// SCALABILITY DETAIL
//-------------------------------------------------------------
struct scal_detail {
u8 node_id;
u32 cbar;
u8 port0_node_connect;
u8 port0_port_connect;
u8 port1_node_connect;
u8 port1_port_connect;
u8 port2_node_connect;
u8 port2_port_connect;
u8 chassis_num;
// struct list_head scal_detail_list;
};
//--------------------------------------------------------------
// RIO DETAIL
//--------------------------------------------------------------
struct rio_detail {
u8 rio_node_id;
u32 bbar;
u8 rio_type;
u8 owner_id;
u8 port0_node_connect;
u8 port0_port_connect;
u8 port1_node_connect;
u8 port1_port_connect;
u8 first_slot_num;
u8 status;
u8 wpindex;
u8 chassis_num;
struct list_head rio_detail_list;
};
struct opt_rio {
u8 rio_type;
u8 chassis_num;
u8 first_slot_num;
u8 middle_num;
struct list_head opt_rio_list;
};
struct opt_rio_lo {
u8 rio_type;
u8 chassis_num;
u8 first_slot_num;
u8 middle_num;
u8 pack_count;
struct list_head opt_rio_lo_list;
};
/****************************************************************
* HPC DESCRIPTOR NODE *
****************************************************************/
struct ebda_hpc_list {
u8 format;
u16 num_ctlrs;
short phys_addr;
// struct list_head ebda_hpc_list;
};
/*****************************************************************
* IN HPC DATA STRUCTURE, THE ASSOCIATED SLOT AND BUS *
* STRUCTURE *
*****************************************************************/
struct ebda_hpc_slot {
u8 slot_num;
u32 slot_bus_num;
u8 ctl_index;
u8 slot_cap;
};
struct ebda_hpc_bus {
u32 bus_num;
u8 slots_at_33_conv;
u8 slots_at_66_conv;
u8 slots_at_66_pcix;
u8 slots_at_100_pcix;
u8 slots_at_133_pcix;
};
/********************************************************************
* THREE TYPE OF HOT PLUG CONTROLLER *
********************************************************************/
struct isa_ctlr_access {
u16 io_start;
u16 io_end;
};
struct pci_ctlr_access {
u8 bus;
u8 dev_fun;
};
struct wpeg_i2c_ctlr_access {
ulong wpegbbar;
u8 i2c_addr;
};
#define HPC_DEVICE_ID 0x0246
#define HPC_SUBSYSTEM_ID 0x0247
#define HPC_PCI_OFFSET 0x40
/*************************************************************************
* RSTC DESCRIPTOR NODE *
*************************************************************************/
struct ebda_rsrc_list {
u8 format;
u16 num_entries;
u16 phys_addr;
struct ebda_rsrc_list *next;
};
/***************************************************************************
* PCI RSRC NODE *
***************************************************************************/
struct ebda_pci_rsrc {
u8 rsrc_type;
u8 bus_num;
u8 dev_fun;
u32 start_addr;
u32 end_addr;
u8 marked; /* for NVRAM */
struct list_head ebda_pci_rsrc_list;
};
/***********************************************************
* BUS_INFO DATE STRUCTURE *
***********************************************************/
struct bus_info {
u8 slot_min;
u8 slot_max;
u8 slot_count;
u8 busno;
u8 controller_id;
u8 current_speed;
u8 current_bus_mode;
u8 index;
u8 slots_at_33_conv;
u8 slots_at_66_conv;
u8 slots_at_66_pcix;
u8 slots_at_100_pcix;
u8 slots_at_133_pcix;
struct list_head bus_info_list;
};
/***********************************************************
* GLOBAL VARIABLES *
***********************************************************/
extern struct list_head ibmphp_ebda_pci_rsrc_head;
extern struct list_head ibmphp_slot_head;
/***********************************************************
* FUNCTION PROTOTYPES *
***********************************************************/
void ibmphp_free_ebda_hpc_queue(void);
int ibmphp_access_ebda(void);
struct slot *ibmphp_get_slot_from_physical_num(u8);
int ibmphp_get_total_hp_slots(void);
void ibmphp_free_ibm_slot(struct slot *);
void ibmphp_free_bus_info_queue(void);
void ibmphp_free_ebda_pci_rsrc_queue(void);
struct bus_info *ibmphp_find_same_bus_num(u32);
int ibmphp_get_bus_index(u8);
u16 ibmphp_get_total_controllers(void);
int ibmphp_register_pci(void);
/* passed parameters */
#define MEM 0
#define IO 1
#define PFMEM 2
/* bit masks */
#define RESTYPE 0x03
#define IOMASK 0x00 /* will need to take its complement */
#define MMASK 0x01
#define PFMASK 0x03
#define PCIDEVMASK 0x10 /* we should always have PCI devices */
#define PRIMARYBUSMASK 0x20
/* pci specific defines */
#define PCI_VENDOR_ID_NOTVALID 0xFFFF
#define PCI_HEADER_TYPE_MULTIDEVICE 0x80
#define PCI_HEADER_TYPE_MULTIBRIDGE 0x81
#define LATENCY 0x64
#define CACHE 64
#define DEVICEENABLE 0x015F /* CPQ has 0x0157 */
#define IOBRIDGE 0x1000 /* 4k */
#define MEMBRIDGE 0x100000 /* 1M */
/* irqs */
#define SCSI_IRQ 0x09
#define LAN_IRQ 0x0A
#define OTHER_IRQ 0x0B
/* Data Structures */
/* type is of the form x x xx xx
* | | | |_ 00 - I/O, 01 - Memory, 11 - PFMemory
* | | - 00 - No Restrictions, 01 - Avoid VGA, 10 - Avoid
* | | VGA and their aliases, 11 - Avoid ISA
* | - 1 - PCI device, 0 - non pci device
* - 1 - Primary PCI Bus Information (0 if Normal device)
* the IO restrictions [2:3] are only for primary buses
*/
/* we need this struct because there could be several resource blocks
* allocated per primary bus in the EBDA
*/
struct range_node {
int rangeno;
u32 start;
u32 end;
struct range_node *next;
};
struct bus_node {
u8 busno;
int noIORanges;
struct range_node *rangeIO;
int noMemRanges;
struct range_node *rangeMem;
int noPFMemRanges;
struct range_node *rangePFMem;
int needIOUpdate;
int needMemUpdate;
int needPFMemUpdate;
struct resource_node *firstIO; /* first IO resource on the Bus */
struct resource_node *firstMem; /* first memory resource on the Bus */
struct resource_node *firstPFMem; /* first prefetchable memory resource on the Bus */
struct resource_node *firstPFMemFromMem; /* when run out of pfmem available, taking from Mem */
struct list_head bus_list;
};
struct resource_node {
int rangeno;
u8 busno;
u8 devfunc;
u32 start;
u32 end;
u32 len;
int type; /* MEM, IO, PFMEM */
u8 fromMem; /* this is to indicate that the range is from
* from the Memory bucket rather than from PFMem */
struct resource_node *next;
struct resource_node *nextRange; /* for the other mem range on bus */
};
struct res_needed {
u32 mem;
u32 pfmem;
u32 io;
u8 not_correct; /* needed for return */
int devices[32]; /* for device numbers behind this bridge */
};
/* functions */
int ibmphp_rsrc_init(void);
int ibmphp_add_resource(struct resource_node *);
int ibmphp_remove_resource(struct resource_node *);
int ibmphp_find_resource(struct bus_node *, u32, struct resource_node **, int);
int ibmphp_check_resource(struct resource_node *, u8);
int ibmphp_remove_bus(struct bus_node *, u8);
void ibmphp_free_resources(void);
int ibmphp_add_pfmem_from_mem(struct resource_node *);
struct bus_node *ibmphp_find_res_bus(u8);
void ibmphp_print_test(void); /* for debugging purposes */
void ibmphp_hpc_initvars(void);
int ibmphp_hpc_readslot(struct slot *, u8, u8 *);
int ibmphp_hpc_writeslot(struct slot *, u8);
void ibmphp_lock_operations(void);
void ibmphp_unlock_operations(void);
int ibmphp_hpc_start_poll_thread(void);
void ibmphp_hpc_stop_poll_thread(void);
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// HPC return codes
//----------------------------------------------------------------------------
#define HPC_ERROR 0xFF
//-----------------------------------------------------------------------------
// BUS INFO
//-----------------------------------------------------------------------------
#define BUS_SPEED 0x30
#define BUS_MODE 0x40
#define BUS_MODE_PCIX 0x01
#define BUS_MODE_PCI 0x00
#define BUS_SPEED_2 0x20
#define BUS_SPEED_1 0x10
#define BUS_SPEED_33 0x00
#define BUS_SPEED_66 0x01
#define BUS_SPEED_100 0x02
#define BUS_SPEED_133 0x03
#define BUS_SPEED_66PCIX 0x04
#define BUS_SPEED_66UNKNOWN 0x05
#define BUS_STATUS_AVAILABLE 0x01
#define BUS_CONTROL_AVAILABLE 0x02
#define SLOT_LATCH_REGS_SUPPORTED 0x10
#define PRGM_MODEL_REV_LEVEL 0xF0
#define MAX_ADAPTER_NONE 0x09
//----------------------------------------------------------------------------
// HPC 'write' operations/commands
//----------------------------------------------------------------------------
// Command Code State Write to reg
// Machine at index
//------------------------- ---- ------- ------------
#define HPC_CTLR_ENABLEIRQ 0x00 // N 15
#define HPC_CTLR_DISABLEIRQ 0x01 // N 15
#define HPC_SLOT_OFF 0x02 // Y 0-14
#define HPC_SLOT_ON 0x03 // Y 0-14
#define HPC_SLOT_ATTNOFF 0x04 // N 0-14
#define HPC_SLOT_ATTNON 0x05 // N 0-14
#define HPC_CTLR_CLEARIRQ 0x06 // N 15
#define HPC_CTLR_RESET 0x07 // Y 15
#define HPC_CTLR_IRQSTEER 0x08 // N 15
#define HPC_BUS_33CONVMODE 0x09 // Y 31-34
#define HPC_BUS_66CONVMODE 0x0A // Y 31-34
#define HPC_BUS_66PCIXMODE 0x0B // Y 31-34
#define HPC_BUS_100PCIXMODE 0x0C // Y 31-34
#define HPC_BUS_133PCIXMODE 0x0D // Y 31-34
#define HPC_ALLSLOT_OFF 0x11 // Y 15
#define HPC_ALLSLOT_ON 0x12 // Y 15
#define HPC_SLOT_BLINKLED 0x13 // N 0-14
//----------------------------------------------------------------------------
// read commands
//----------------------------------------------------------------------------
#define READ_SLOTSTATUS 0x01
#define READ_EXTSLOTSTATUS 0x02
#define READ_BUSSTATUS 0x03
#define READ_CTLRSTATUS 0x04
#define READ_ALLSTAT 0x05
#define READ_ALLSLOT 0x06
#define READ_SLOTLATCHLOWREG 0x07
#define READ_REVLEVEL 0x08
#define READ_HPCOPTIONS 0x09
//----------------------------------------------------------------------------
// slot status
//----------------------------------------------------------------------------
#define HPC_SLOT_POWER 0x01
#define HPC_SLOT_CONNECT 0x02
#define HPC_SLOT_ATTN 0x04
#define HPC_SLOT_PRSNT2 0x08
#define HPC_SLOT_PRSNT1 0x10
#define HPC_SLOT_PWRGD 0x20
#define HPC_SLOT_BUS_SPEED 0x40
#define HPC_SLOT_LATCH 0x80
//----------------------------------------------------------------------------
// HPC_SLOT_POWER status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_POWER_OFF 0x00
#define HPC_SLOT_POWER_ON 0x01
//----------------------------------------------------------------------------
// HPC_SLOT_CONNECT status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_CONNECTED 0x00
#define HPC_SLOT_DISCONNECTED 0x01
//----------------------------------------------------------------------------
// HPC_SLOT_ATTN status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_ATTN_OFF 0x00
#define HPC_SLOT_ATTN_ON 0x01
#define HPC_SLOT_ATTN_BLINK 0x02
//----------------------------------------------------------------------------
// HPC_SLOT_PRSNT status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_EMPTY 0x00
#define HPC_SLOT_PRSNT_7 0x01
#define HPC_SLOT_PRSNT_15 0x02
#define HPC_SLOT_PRSNT_25 0x03
//----------------------------------------------------------------------------
// HPC_SLOT_PWRGD status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_PWRGD_FAULT_NONE 0x00
#define HPC_SLOT_PWRGD_GOOD 0x01
//----------------------------------------------------------------------------
// HPC_SLOT_BUS_SPEED status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_BUS_SPEED_OK 0x00
#define HPC_SLOT_BUS_SPEED_MISM 0x01
//----------------------------------------------------------------------------
// HPC_SLOT_LATCH status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_LATCH_OPEN 0x01 // NOTE : in PCI spec bit off = open
#define HPC_SLOT_LATCH_CLOSED 0x00 // NOTE : in PCI spec bit on = closed
//----------------------------------------------------------------------------
// extended slot status
//----------------------------------------------------------------------------
#define HPC_SLOT_PCIX 0x01
#define HPC_SLOT_SPEED1 0x02
#define HPC_SLOT_SPEED2 0x04
#define HPC_SLOT_BLINK_ATTN 0x08
#define HPC_SLOT_RSRVD1 0x10
#define HPC_SLOT_RSRVD2 0x20
#define HPC_SLOT_BUS_MODE 0x40
#define HPC_SLOT_RSRVD3 0x80
//----------------------------------------------------------------------------
// HPC_XSLOT_PCIX_CAP status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_PCIX_NO 0x00
#define HPC_SLOT_PCIX_YES 0x01
//----------------------------------------------------------------------------
// HPC_XSLOT_SPEED status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_SPEED_33 0x00
#define HPC_SLOT_SPEED_66 0x01
#define HPC_SLOT_SPEED_133 0x02
//----------------------------------------------------------------------------
// HPC_XSLOT_ATTN_BLINK status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_ATTN_BLINK_OFF 0x00
#define HPC_SLOT_ATTN_BLINK_ON 0x01
//----------------------------------------------------------------------------
// HPC_XSLOT_BUS_MODE status return codes
//----------------------------------------------------------------------------
#define HPC_SLOT_BUS_MODE_OK 0x00
#define HPC_SLOT_BUS_MODE_MISM 0x01
//----------------------------------------------------------------------------
// Controller status
//----------------------------------------------------------------------------
#define HPC_CTLR_WORKING 0x01
#define HPC_CTLR_FINISHED 0x02
#define HPC_CTLR_RESULT0 0x04
#define HPC_CTLR_RESULT1 0x08
#define HPC_CTLR_RESULE2 0x10
#define HPC_CTLR_RESULT3 0x20
#define HPC_CTLR_IRQ_ROUTG 0x40
#define HPC_CTLR_IRQ_PENDG 0x80
//----------------------------------------------------------------------------
// HPC_CTLR_WORKING status return codes
//----------------------------------------------------------------------------
#define HPC_CTLR_WORKING_NO 0x00
#define HPC_CTLR_WORKING_YES 0x01
//----------------------------------------------------------------------------
// HPC_CTLR_FINISHED status return codes
//----------------------------------------------------------------------------
#define HPC_CTLR_FINISHED_NO 0x00
#define HPC_CTLR_FINISHED_YES 0x01
//----------------------------------------------------------------------------
// HPC_CTLR_RESULT status return codes
//----------------------------------------------------------------------------
#define HPC_CTLR_RESULT_SUCCESS 0x00
#define HPC_CTLR_RESULT_FAILED 0x01
#define HPC_CTLR_RESULT_RSVD 0x02
#define HPC_CTLR_RESULT_NORESP 0x03
//----------------------------------------------------------------------------
// macro for slot info
//----------------------------------------------------------------------------
#define SLOT_POWER(s) ((u8) ((s & HPC_SLOT_POWER) \
? HPC_SLOT_POWER_ON : HPC_SLOT_POWER_OFF))
#define SLOT_CONNECT(s) ((u8) ((s & HPC_SLOT_CONNECT) \
? HPC_SLOT_DISCONNECTED : HPC_SLOT_CONNECTED))
#define SLOT_ATTN(s, es) ((u8) ((es & HPC_SLOT_BLINK_ATTN) \
? HPC_SLOT_ATTN_BLINK \
: ((s & HPC_SLOT_ATTN) ? HPC_SLOT_ATTN_ON : HPC_SLOT_ATTN_OFF)))
#define SLOT_PRESENT(s) ((u8) ((s & HPC_SLOT_PRSNT1) \
? ((s & HPC_SLOT_PRSNT2) ? HPC_SLOT_EMPTY : HPC_SLOT_PRSNT_15) \
: ((s & HPC_SLOT_PRSNT2) ? HPC_SLOT_PRSNT_25 : HPC_SLOT_PRSNT_7)))
#define SLOT_PWRGD(s) ((u8) ((s & HPC_SLOT_PWRGD) \
? HPC_SLOT_PWRGD_GOOD : HPC_SLOT_PWRGD_FAULT_NONE))
#define SLOT_BUS_SPEED(s) ((u8) ((s & HPC_SLOT_BUS_SPEED) \
? HPC_SLOT_BUS_SPEED_MISM : HPC_SLOT_BUS_SPEED_OK))
#define SLOT_LATCH(s) ((u8) ((s & HPC_SLOT_LATCH) \
? HPC_SLOT_LATCH_CLOSED : HPC_SLOT_LATCH_OPEN))
#define SLOT_PCIX(es) ((u8) ((es & HPC_SLOT_PCIX) \
? HPC_SLOT_PCIX_YES : HPC_SLOT_PCIX_NO))
#define SLOT_SPEED(es) ((u8) ((es & HPC_SLOT_SPEED2) \
? ((es & HPC_SLOT_SPEED1) ? HPC_SLOT_SPEED_133 \
: HPC_SLOT_SPEED_66) \
: HPC_SLOT_SPEED_33))
#define SLOT_BUS_MODE(es) ((u8) ((es & HPC_SLOT_BUS_MODE) \
? HPC_SLOT_BUS_MODE_MISM : HPC_SLOT_BUS_MODE_OK))
//--------------------------------------------------------------------------
// macro for bus info
//---------------------------------------------------------------------------
#define CURRENT_BUS_SPEED(s) ((u8) (s & BUS_SPEED_2) \
? ((s & BUS_SPEED_1) ? BUS_SPEED_133 : BUS_SPEED_100) \
: ((s & BUS_SPEED_1) ? BUS_SPEED_66 : BUS_SPEED_33))
#define CURRENT_BUS_MODE(s) ((u8) (s & BUS_MODE) ? BUS_MODE_PCIX : BUS_MODE_PCI)
#define READ_BUS_STATUS(s) ((u8) (s->options & BUS_STATUS_AVAILABLE))
#define READ_BUS_MODE(s) ((s->revision & PRGM_MODEL_REV_LEVEL) >= 0x20)
#define SET_BUS_STATUS(s) ((u8) (s->options & BUS_CONTROL_AVAILABLE))
#define READ_SLOT_LATCH(s) ((u8) (s->options & SLOT_LATCH_REGS_SUPPORTED))
//----------------------------------------------------------------------------
// macro for controller info
//----------------------------------------------------------------------------
#define CTLR_WORKING(c) ((u8) ((c & HPC_CTLR_WORKING) \
? HPC_CTLR_WORKING_YES : HPC_CTLR_WORKING_NO))
#define CTLR_FINISHED(c) ((u8) ((c & HPC_CTLR_FINISHED) \
? HPC_CTLR_FINISHED_YES : HPC_CTLR_FINISHED_NO))
#define CTLR_RESULT(c) ((u8) ((c & HPC_CTLR_RESULT1) \
? ((c & HPC_CTLR_RESULT0) ? HPC_CTLR_RESULT_NORESP \
: HPC_CTLR_RESULT_RSVD) \
: ((c & HPC_CTLR_RESULT0) ? HPC_CTLR_RESULT_FAILED \
: HPC_CTLR_RESULT_SUCCESS)))
// command that affect the state machine of HPC
#define NEEDTOCHECK_CMDSTATUS(c) ((c == HPC_SLOT_OFF) || \
(c == HPC_SLOT_ON) || \
(c == HPC_CTLR_RESET) || \
(c == HPC_BUS_33CONVMODE) || \
(c == HPC_BUS_66CONVMODE) || \
(c == HPC_BUS_66PCIXMODE) || \
(c == HPC_BUS_100PCIXMODE) || \
(c == HPC_BUS_133PCIXMODE) || \
(c == HPC_ALLSLOT_OFF) || \
(c == HPC_ALLSLOT_ON))
/* Core part of the driver */
#define ENABLE 1
#define DISABLE 0
#define CARD_INFO 0x07
#define PCIX133 0x07
#define PCIX66 0x05
#define PCI66 0x04
extern struct pci_bus *ibmphp_pci_bus;
/* Variables */
struct pci_func {
struct pci_dev *dev; /* from the OS */
u8 busno;
u8 device;
u8 function;
struct resource_node *io[6];
struct resource_node *mem[6];
struct resource_node *pfmem[6];
struct pci_func *next;
int devices[32]; /* for bridge config */
u8 irq[4]; /* for interrupt config */
u8 bus; /* flag for unconfiguring, to say if PPB */
};
struct slot {
u8 bus;
u8 device;
u8 number;
u8 real_physical_slot_num;
u32 capabilities;
u8 supported_speed;
u8 supported_bus_mode;
u8 flag; /* this is for disable slot and polling */
u8 ctlr_index;
struct hotplug_slot hotplug_slot;
struct controller *ctrl;
struct pci_func *func;
u8 irq[4];
int bit_mode; /* 0 = 32, 1 = 64 */
struct bus_info *bus_on;
struct list_head ibm_slot_list;
u8 status;
u8 ext_status;
u8 busstatus;
};
struct controller {
struct ebda_hpc_slot *slots;
struct ebda_hpc_bus *buses;
struct pci_dev *ctrl_dev; /* in case where controller is PCI */
u8 starting_slot_num; /* starting and ending slot #'s this ctrl controls*/
u8 ending_slot_num;
u8 revision;
u8 options; /* which options HPC supports */
u8 status;
u8 ctlr_id;
u8 slot_count;
u8 bus_count;
u8 ctlr_relative_id;
u32 irq;
union {
struct isa_ctlr_access isa_ctlr;
struct pci_ctlr_access pci_ctlr;
struct wpeg_i2c_ctlr_access wpeg_ctlr;
} u;
u8 ctlr_type;
struct list_head ebda_hpc_list;
};
/* Functions */
int ibmphp_init_devno(struct slot **); /* This function is called from EBDA, so we need it not be static */
int ibmphp_do_disable_slot(struct slot *slot_cur);
int ibmphp_update_slot_info(struct slot *); /* This function is called from HPC, so we need it to not be be static */
int ibmphp_configure_card(struct pci_func *, u8);
int ibmphp_unconfigure_card(struct slot **, int);
extern const struct hotplug_slot_ops ibmphp_hotplug_slot_ops;
static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
{
return container_of(hotplug_slot, struct slot, hotplug_slot);
}
#endif //__IBMPHP_H
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