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powerpc: Remove platforms/wsp and associated pieces

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__attribute__ ((unused))

WSP is the last user of CONFIG_PPC_A2, so we remove that as well.

Although CONFIG_PPC_ICSWX still exists, it's no longer selectable for
any Book3E platform, so we can remove the code in mmu-book3e.h that
depended on it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2014-06-02 11:20:46 +10:00 committed by Benjamin Herrenschmidt
parent 94314290ed
commit fb5a515704
32 changed files with 1 additions and 4250 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/powerpc/Kconfig.debug
View File

@ -235,11 +235,6 @@ config PPC_EARLY_DEBUG_USBGECKO
Select this to enable early debugging for Nintendo GameCube/Wii
consoles via an external USB Gecko adapter.
config PPC_EARLY_DEBUG_WSP
bool "Early debugging via WSP's internal UART"
depends on PPC_WSP
select PPC_UDBG_16550
config PPC_EARLY_DEBUG_PS3GELIC
bool "Early debugging through the PS3 Ethernet port"
depends on PPC_PS3

307
arch/powerpc/configs/chroma_defconfig
View File

@ -1,307 +0,0 @@
CONFIG_PPC64=y
CONFIG_PPC_BOOK3E_64=y
# CONFIG_VIRT_CPU_ACCOUNTING_NATIVE is not set
CONFIG_SMP=y
CONFIG_NR_CPUS=256
CONFIG_EXPERIMENTAL=y
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_AUDIT=y
CONFIG_AUDITSYSCALL=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=19
CONFIG_CGROUPS=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_RESOURCE_COUNTERS=y
CONFIG_CGROUP_MEMCG=y
CONFIG_CGROUP_MEMCG_SWAP=y
CONFIG_NAMESPACES=y
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_INITRAMFS_COMPRESSION_GZIP=y
CONFIG_KALLSYMS_ALL=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_MODULE_SRCVERSION_ALL=y
CONFIG_SCOM_DEBUGFS=y
CONFIG_PPC_A2_DD2=y
CONFIG_KVM_GUEST=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_HZ_100=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_BINFMT_MISC=y
CONFIG_NUMA=y
# CONFIG_MIGRATION is not set
CONFIG_PPC_64K_PAGES=y
CONFIG_SCHED_SMT=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE=""
# CONFIG_SECCOMP is not set
CONFIG_PCIEPORTBUS=y
# CONFIG_PCIEASPM is not set
CONFIG_PCI_MSI=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_XFRM_USER=m
CONFIG_XFRM_SUB_POLICY=y
CONFIG_XFRM_STATISTICS=y
CONFIG_NET_KEY=m
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_NET_IPIP=y
CONFIG_IP_MROUTE=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
CONFIG_SYN_COOKIES=y
CONFIG_INET_AH=m
CONFIG_INET_ESP=m
CONFIG_INET_IPCOMP=m
CONFIG_IPV6=y
CONFIG_IPV6_PRIVACY=y
CONFIG_IPV6_ROUTER_PREF=y
CONFIG_IPV6_ROUTE_INFO=y
CONFIG_IPV6_OPTIMISTIC_DAD=y
CONFIG_INET6_AH=y
CONFIG_INET6_ESP=y
CONFIG_INET6_IPCOMP=y
CONFIG_IPV6_MIP6=y
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=y
CONFIG_IPV6_TUNNEL=y
CONFIG_IPV6_MULTIPLE_TABLES=y
CONFIG_IPV6_SUBTREES=y
CONFIG_IPV6_MROUTE=y
CONFIG_IPV6_PIMSM_V2=y
CONFIG_NETFILTER=y
CONFIG_NF_CONNTRACK=m
CONFIG_NF_CONNTRACK_EVENTS=y
CONFIG_NF_CT_PROTO_UDPLITE=m
CONFIG_NF_CONNTRACK_FTP=m
CONFIG_NF_CONNTRACK_IRC=m
CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
CONFIG_NETFILTER_XT_TARGET_MARK=m
CONFIG_NETFILTER_XT_TARGET_NFLOG=m
CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
CONFIG_NETFILTER_XT_MATCH_COMMENT=m
CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
CONFIG_NETFILTER_XT_MATCH_DCCP=m
CONFIG_NETFILTER_XT_MATCH_DSCP=m
CONFIG_NETFILTER_XT_MATCH_ESP=m
CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
CONFIG_NETFILTER_XT_MATCH_HELPER=m
CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
CONFIG_NETFILTER_XT_MATCH_LENGTH=m
CONFIG_NETFILTER_XT_MATCH_LIMIT=m
CONFIG_NETFILTER_XT_MATCH_MAC=m
CONFIG_NETFILTER_XT_MATCH_MARK=m
CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
CONFIG_NETFILTER_XT_MATCH_OWNER=m
CONFIG_NETFILTER_XT_MATCH_POLICY=m
CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
CONFIG_NETFILTER_XT_MATCH_QUOTA=m
CONFIG_NETFILTER_XT_MATCH_RATEEST=m
CONFIG_NETFILTER_XT_MATCH_REALM=m
CONFIG_NETFILTER_XT_MATCH_RECENT=m
CONFIG_NETFILTER_XT_MATCH_SCTP=m
CONFIG_NETFILTER_XT_MATCH_STATE=m
CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
CONFIG_NETFILTER_XT_MATCH_STRING=m
CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
CONFIG_NETFILTER_XT_MATCH_TIME=m
CONFIG_NETFILTER_XT_MATCH_U32=m
CONFIG_NF_CONNTRACK_IPV4=m
CONFIG_IP_NF_QUEUE=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_AH=m
CONFIG_IP_NF_MATCH_ECN=m
CONFIG_IP_NF_MATCH_TTL=m
CONFIG_IP_NF_FILTER=m
CONFIG_IP_NF_TARGET_REJECT=m
CONFIG_IP_NF_TARGET_LOG=m
CONFIG_IP_NF_TARGET_ULOG=m
CONFIG_NF_NAT=m
CONFIG_IP_NF_TARGET_MASQUERADE=m
CONFIG_IP_NF_TARGET_NETMAP=m
CONFIG_IP_NF_TARGET_REDIRECT=m
CONFIG_NET_TCPPROBE=y
# CONFIG_WIRELESS is not set
CONFIG_NET_9P=y
CONFIG_NET_9P_DEBUG=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_MTD=y
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_LE_BYTE_SWAP=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_CFI_AMDSTD=y
CONFIG_MTD_CFI_STAA=y
CONFIG_MTD_PHYSMAP_OF=y
CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_CRYPTOLOOP=y
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=65536
CONFIG_CDROM_PKTCDVD=y
CONFIG_MISC_DEVICES=y
CONFIG_BLK_DEV_SD=y
CONFIG_BLK_DEV_SR=y
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_CHR_DEV_SG=y
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_SPI_ATTRS=y
CONFIG_SCSI_FC_ATTRS=y
CONFIG_SCSI_ISCSI_ATTRS=m
CONFIG_SCSI_SAS_ATTRS=m
CONFIG_SCSI_SRP_ATTRS=y
CONFIG_ATA=y
CONFIG_SATA_AHCI=y
CONFIG_SATA_SIL24=y
CONFIG_SATA_MV=y
CONFIG_SATA_SIL=y
CONFIG_PATA_CMD64X=y
CONFIG_PATA_MARVELL=y
CONFIG_PATA_SIL680=y
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_LINEAR=y
CONFIG_BLK_DEV_DM=y
CONFIG_DM_CRYPT=y
CONFIG_DM_SNAPSHOT=y
CONFIG_DM_MIRROR=y
CONFIG_DM_ZERO=y
CONFIG_DM_UEVENT=y
CONFIG_NETDEVICES=y
CONFIG_TUN=y
CONFIG_E1000E=y
CONFIG_TIGON3=y
# CONFIG_WLAN is not set
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_HW_RANDOM=y
CONFIG_RAW_DRIVER=y
CONFIG_MAX_RAW_DEVS=1024
# CONFIG_HWMON is not set
# CONFIG_VGA_ARB is not set
# CONFIG_USB_SUPPORT is not set
CONFIG_EDAC=y
CONFIG_EDAC_MM_EDAC=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_DS1511=y
CONFIG_RTC_DRV_DS1553=y
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
CONFIG_EXT2_FS_XIP=y
CONFIG_EXT3_FS=y
# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
CONFIG_EXT4_FS=y
# CONFIG_DNOTIFY is not set
CONFIG_FUSE_FS=y
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=m
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_PROC_KCORE=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_CONFIGFS_FS=m
CONFIG_CRAMFS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_NFS_V4_1=y
CONFIG_ROOT_NFS=y
CONFIG_CIFS=y
CONFIG_CIFS_WEAK_PW_HASH=y
CONFIG_CIFS_XATTR=y
CONFIG_CIFS_POSIX=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_CRC_CCITT=m
CONFIG_CRC_T10DIF=y
CONFIG_LIBCRC32C=m
CONFIG_PRINTK_TIME=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DETECT_HUNG_TASK=y
# CONFIG_SCHED_DEBUG is not set
CONFIG_DEBUG_INFO=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_PPC_EMULATED_STATS=y
CONFIG_XMON=y
CONFIG_XMON_DEFAULT=y
CONFIG_IRQ_DOMAIN_DEBUG=y
CONFIG_PPC_EARLY_DEBUG=y
CONFIG_KEYS_DEBUG_PROC_KEYS=y
CONFIG_CRYPTO_NULL=m
CONFIG_CRYPTO_TEST=m
CONFIG_CRYPTO_CCM=m
CONFIG_CRYPTO_GCM=m
CONFIG_CRYPTO_PCBC=m
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_SHA512=m
CONFIG_CRYPTO_TGR192=m
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_AES=m
CONFIG_CRYPTO_ANUBIS=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_KHAZAD=m
CONFIG_CRYPTO_SALSA20=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_LZO=m
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_VIRTUALIZATION=y

4
arch/powerpc/include/asm/mmu-book3e.h
View File

@ -223,10 +223,6 @@ typedef struct {
unsigned int id;
unsigned int active;
unsigned long vdso_base;
#ifdef CONFIG_PPC_ICSWX
struct spinlock *cop_lockp; /* guard cop related stuff */
unsigned long acop; /* mask of enabled coprocessor types */
#endif /* CONFIG_PPC_ICSWX */
#ifdef CONFIG_PPC_MM_SLICES
u64 low_slices_psize; /* SLB page size encodings */
u64 high_slices_psize; /* 4 bits per slice for now */

9
arch/powerpc/include/asm/reg_a2.h
View File

@ -110,15 +110,6 @@
#define TLB1_UR ASM_CONST(0x0000000000000002)
#define TLB1_SR ASM_CONST(0x0000000000000001)
#ifdef CONFIG_PPC_EARLY_DEBUG_WSP
#define WSP_UART_PHYS 0xffc000c000
/* This needs to be careful chosen to hit a !0 congruence class
* in the TLB since we bolt it in way 3, which is already occupied
* by our linear mapping primary bolted entry in CC 0.
*/
#define WSP_UART_VIRT 0xf000000000001000
#endif
/* A2 erativax attributes definitions */
#define ERATIVAX_RS_IS_ALL 0x000
#define ERATIVAX_RS_IS_TID 0x040

14
arch/powerpc/include/asm/wsp.h
View File

@ -1,14 +0,0 @@
/*
* Copyright 2011 Michael Ellerman, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __ASM_POWERPC_WSP_H
#define __ASM_POWERPC_WSP_H
extern int wsp_get_chip_id(struct device_node *dn);
#endif /* __ASM_POWERPC_WSP_H */

1
arch/powerpc/kernel/Makefile
View File

@ -43,7 +43,6 @@ obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_power.o
obj-$(CONFIG_PPC_BOOK3S_64) += mce.o mce_power.o
obj64-$(CONFIG_RELOCATABLE) += reloc_64.o
obj-$(CONFIG_PPC_BOOK3E_64) += exceptions-64e.o idle_book3e.o
obj-$(CONFIG_PPC_A2) += cpu_setup_a2.o
obj-$(CONFIG_PPC64) += vdso64/
obj-$(CONFIG_ALTIVEC) += vecemu.o
obj-$(CONFIG_PPC_970_NAP) += idle_power4.o

120
arch/powerpc/kernel/cpu_setup_a2.S
View File

@ -1,120 +0,0 @@
/*
* A2 specific assembly support code
*
* Copyright 2009 Ben Herrenschmidt, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <asm/asm-offsets.h>
#include <asm/ppc_asm.h>
#include <asm/ppc-opcode.h>
#include <asm/processor.h>
#include <asm/reg_a2.h>
#include <asm/reg.h>
#include <asm/thread_info.h>
/*
* Disable thdid and class fields in ERATs to bump PID to full 14 bits capacity.
* This also prevents external LPID accesses but that isn't a problem when not a
* guest. Under PV, this setting will be ignored and MMUCR will return the right
* number of PID bits we can use.
*/
#define MMUCR1_EXTEND_PID \
(MMUCR1_ICTID | MMUCR1_ITTID | MMUCR1_DCTID | \
MMUCR1_DTTID | MMUCR1_DCCD)
/*
* Use extended PIDs if enabled.
* Don't clear the ERATs on context sync events and enable I & D LRU.
* Enable ERAT back invalidate when tlbwe overwrites an entry.
*/
#define INITIAL_MMUCR1 \
(MMUCR1_EXTEND_PID | MMUCR1_CSINV_NEVER | MMUCR1_IRRE | \
MMUCR1_DRRE | MMUCR1_TLBWE_BINV)
_GLOBAL(__setup_cpu_a2)
/* Some of these are actually thread local and some are
* core local but doing it always won't hurt
*/
#ifdef CONFIG_PPC_ICSWX
/* Make sure ACOP starts out as zero */
li r3,0
mtspr SPRN_ACOP,r3
/* Skip the following if we are in Guest mode */
mfmsr r3
andis. r0,r3,MSR_GS@h
bne _icswx_skip_guest
/* Enable icswx instruction */
mfspr r3,SPRN_A2_CCR2
ori r3,r3,A2_CCR2_ENABLE_ICSWX
mtspr SPRN_A2_CCR2,r3
/* Unmask all CTs in HACOP */
li r3,-1
mtspr SPRN_HACOP,r3
_icswx_skip_guest:
#endif /* CONFIG_PPC_ICSWX */
/* Enable doorbell */
mfspr r3,SPRN_A2_CCR2
oris r3,r3,A2_CCR2_ENABLE_PC@h
mtspr SPRN_A2_CCR2,r3
isync
/* Setup CCR0 to disable power saving for now as it's busted
* in the current implementations. Setup CCR1 to wake on
* interrupts normally (we write the default value but who
* knows what FW may have clobbered...)
*/
li r3,0
mtspr SPRN_A2_CCR0, r3
LOAD_REG_IMMEDIATE(r3,0x0f0f0f0f)
mtspr SPRN_A2_CCR1, r3
/* Initialise MMUCR1 */
lis r3,INITIAL_MMUCR1@h
ori r3,r3,INITIAL_MMUCR1@l
mtspr SPRN_MMUCR1,r3
/* Set MMUCR2 to enable 4K, 64K, 1M, 16M and 1G pages */
LOAD_REG_IMMEDIATE(r3, 0x000a7531)
mtspr SPRN_MMUCR2,r3
/* Set MMUCR3 to write all thids bit to the TLB */
LOAD_REG_IMMEDIATE(r3, 0x0000000f)
mtspr SPRN_MMUCR3,r3
/* Don't do ERAT stuff if running guest mode */
mfmsr r3
andis. r0,r3,MSR_GS@h
bne 1f
/* Now set the I-ERAT watermark to 15 */
lis r4,(MMUCR0_TLBSEL_I|MMUCR0_ECL)@h
mtspr SPRN_MMUCR0, r4
li r4,A2_IERAT_SIZE-1
PPC_ERATWE(R4,R4,3)
/* Now set the D-ERAT watermark to 31 */
lis r4,(MMUCR0_TLBSEL_D|MMUCR0_ECL)@h
mtspr SPRN_MMUCR0, r4
li r4,A2_DERAT_SIZE-1
PPC_ERATWE(R4,R4,3)
/* And invalidate the beast just in case. That won't get rid of
* a bolted entry though it will be in LRU and so will go away eventually
* but let's not bother for now
*/
PPC_ERATILX(0,0,R0)
1:
blr
_GLOBAL(__restore_cpu_a2)
b __setup_cpu_a2

38
arch/powerpc/kernel/cputable.c
View File

@ -2149,44 +2149,6 @@ static struct cpu_spec __initdata cpu_specs[] = {
}
#endif /* CONFIG_PPC32 */
#endif /* CONFIG_E500 */
#ifdef CONFIG_PPC_A2
{ /* Standard A2 (>= DD2) + FPU core */
.pvr_mask = 0xffff0000,
.pvr_value = 0x00480000,
.cpu_name = "A2 (>= DD2)",
.cpu_features = CPU_FTRS_A2,
.cpu_user_features = COMMON_USER_PPC64,
.mmu_features = MMU_FTRS_A2,
.icache_bsize = 64,
.dcache_bsize = 64,
.num_pmcs = 0,
.cpu_setup = __setup_cpu_a2,
.cpu_restore = __restore_cpu_a2,
.machine_check = machine_check_generic,
.platform = "ppca2",
},
{ /* This is a default entry to get going, to be replaced by
* a real one at some stage
*/
#define CPU_FTRS_BASE_BOOK3E (CPU_FTR_USE_TB | \
CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_SMT | \
CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
.pvr_mask = 0x00000000,
.pvr_value = 0x00000000,
.cpu_name = "Book3E",
.cpu_features = CPU_FTRS_BASE_BOOK3E,
.cpu_user_features = COMMON_USER_PPC64,
.mmu_features = MMU_FTR_TYPE_3E | MMU_FTR_USE_TLBILX |
MMU_FTR_USE_TLBIVAX_BCAST |
MMU_FTR_LOCK_BCAST_INVAL,
.icache_bsize = 64,
.dcache_bsize = 64,
.num_pmcs = 0,
.machine_check = machine_check_generic,
.platform = "power6",
},
#endif /* CONFIG_PPC_A2 */
};
static struct cpu_spec the_cpu_spec;

16
arch/powerpc/kernel/exceptions-64e.S
View File

@ -1467,22 +1467,6 @@ a2_tlbinit_after_linear_map:
.globl a2_tlbinit_after_iprot_flush
a2_tlbinit_after_iprot_flush:
#ifdef CONFIG_PPC_EARLY_DEBUG_WSP
/* Now establish early debug mappings if applicable */
/* Restore the MAS0 we used for linear mapping load */
mtspr SPRN_MAS0,r11
lis r3,(MAS1_VALID | MAS1_IPROT)@h
ori r3,r3,(BOOK3E_PAGESZ_4K << MAS1_TSIZE_SHIFT)
mtspr SPRN_MAS1,r3
LOAD_REG_IMMEDIATE(r3, WSP_UART_VIRT | MAS2_I | MAS2_G)
mtspr SPRN_MAS2,r3
LOAD_REG_IMMEDIATE(r3, WSP_UART_PHYS | MAS3_SR | MAS3_SW)
mtspr SPRN_MAS7_MAS3,r3
/* re-use the MAS8 value from the linear mapping */
tlbwe
#endif /* CONFIG_PPC_EARLY_DEBUG_WSP */
PPC_TLBILX(0,0,R0)
sync
isync

2
arch/powerpc/kernel/udbg.c
View File

@ -62,8 +62,6 @@ void __init udbg_early_init(void)
udbg_init_cpm();
#elif defined(CONFIG_PPC_EARLY_DEBUG_USBGECKO)
udbg_init_usbgecko();
#elif defined(CONFIG_PPC_EARLY_DEBUG_WSP)
udbg_init_wsp();
#elif defined(CONFIG_PPC_EARLY_DEBUG_MEMCONS)
/* In memory console */
udbg_init_memcons();

11
arch/powerpc/kernel/udbg_16550.c
View File

@ -296,14 +296,3 @@ void __init udbg_init_40x_realmode(void)
}
#endif /* CONFIG_PPC_EARLY_DEBUG_40x */
#ifdef CONFIG_PPC_EARLY_DEBUG_WSP
void __init udbg_init_wsp(void)
{
udbg_uart_init_mmio((void *)WSP_UART_VIRT, 1);
udbg_uart_setup(57600, 50000000);
}
#endif /* CONFIG_PPC_EARLY_DEBUG_WSP */

1
arch/powerpc/platforms/Kconfig
View File

@ -19,7 +19,6 @@ source "arch/powerpc/platforms/embedded6xx/Kconfig"
source "arch/powerpc/platforms/44x/Kconfig"
source "arch/powerpc/platforms/40x/Kconfig"
source "arch/powerpc/platforms/amigaone/Kconfig"
source "arch/powerpc/platforms/wsp/Kconfig"
config KVM_GUEST
bool "KVM Guest support"

6
arch/powerpc/platforms/Kconfig.cputype
View File

@ -148,10 +148,6 @@ config POWER4
depends on PPC64 && PPC_BOOK3S
def_bool y
config PPC_A2
bool
depends on PPC_BOOK3E_64
config TUNE_CELL
bool "Optimize for Cell Broadband Engine"
depends on PPC64 && PPC_BOOK3S
@ -280,7 +276,7 @@ config VSX
config PPC_ICSWX
bool "Support for PowerPC icswx coprocessor instruction"
depends on POWER4 || PPC_A2
depends on POWER4
default n
---help---

1
arch/powerpc/platforms/Makefile
View File

@ -22,4 +22,3 @@ obj-$(CONFIG_PPC_CELL) += cell/
obj-$(CONFIG_PPC_PS3) += ps3/
obj-$(CONFIG_EMBEDDED6xx) += embedded6xx/
obj-$(CONFIG_AMIGAONE) += amigaone/
obj-$(CONFIG_PPC_WSP) += wsp/

30
arch/powerpc/platforms/wsp/Kconfig
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@ -1,30 +0,0 @@
config PPC_WSP
bool
select PPC_A2
select GENERIC_TBSYNC
select PPC_ICSWX
select PPC_SCOM
select PPC_XICS
select PPC_ICP_NATIVE
select PCI
select PPC_IO_WORKAROUNDS if PCI
select PPC_INDIRECT_PIO if PCI
default n
menu "WSP platform selection"
depends on PPC_BOOK3E_64
config PPC_PSR2
bool "PowerEN System Reference Platform 2"
select EPAPR_BOOT
select PPC_WSP
default y
config PPC_CHROMA
bool "PowerEN PCIe Chroma Card"
select EPAPR_BOOT
select PPC_WSP
select OF_DYNAMIC
default y
endmenu

10
arch/powerpc/platforms/wsp/Makefile
View File

@ -1,10 +0,0 @@
ccflags-y += $(NO_MINIMAL_TOC)
obj-y += setup.o ics.o wsp.o
obj-$(CONFIG_PPC_PSR2) += psr2.o
obj-$(CONFIG_PPC_CHROMA) += chroma.o h8.o
obj-$(CONFIG_PPC_WSP) += opb_pic.o
obj-$(CONFIG_PPC_WSP) += scom_wsp.o
obj-$(CONFIG_SMP) += smp.o scom_smp.o
obj-$(CONFIG_PCI) += wsp_pci.o
obj-$(CONFIG_PCI_MSI) += msi.o

56
arch/powerpc/platforms/wsp/chroma.c
View File

@ -1,56 +0,0 @@
/*
* Copyright 2008-2011, IBM Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/of.h>
#include <linux/smp.h>
#include <linux/time.h>
#include <linux/of_fdt.h>
#include <asm/machdep.h>
#include <asm/udbg.h>
#include "ics.h"
#include "wsp.h"
void __init chroma_setup_arch(void)
{
wsp_setup_arch();
wsp_setup_h8();
}
static int __init chroma_probe(void)
{
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "ibm,wsp-chroma"))
return 0;
return 1;
}
define_machine(chroma_md) {
.name = "Chroma PCIe",
.probe = chroma_probe,
.setup_arch = chroma_setup_arch,
.restart = wsp_h8_restart,
.power_off = wsp_h8_power_off,
.halt = wsp_halt,
.calibrate_decr = generic_calibrate_decr,
.init_IRQ = wsp_setup_irq,
.progress = udbg_progress,
.power_save = book3e_idle,
};
machine_arch_initcall(chroma_md, wsp_probe_devices);

135
arch/powerpc/platforms/wsp/h8.c
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@ -1,135 +0,0 @@
/*
* Copyright 2008-2011, IBM Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/io.h>
#include <linux/of_address.h>
#include "wsp.h"
/*
* The UART connection to the H8 is over ttyS1 which is just a 16550.
* We assume that FW has it setup right and no one messes with it.
*/
static u8 __iomem *h8;
#define RBR 0 /* Receiver Buffer Register */
#define THR 0 /* Transmitter Holding Register */
#define LSR 5 /* Line Status Register */
#define LSR_DR 0x01 /* LSR value for Data-Ready */
#define LSR_THRE 0x20 /* LSR value for Transmitter-Holding-Register-Empty */
static void wsp_h8_putc(int c)
{
u8 lsr;
do {
lsr = readb(h8 + LSR);
} while ((lsr & LSR_THRE) != LSR_THRE);
writeb(c, h8 + THR);
}
static int wsp_h8_getc(void)
{
u8 lsr;
do {
lsr = readb(h8 + LSR);
} while ((lsr & LSR_DR) != LSR_DR);
return readb(h8 + RBR);
}
static void wsp_h8_puts(const char *s, int sz)
{
int i;
for (i = 0; i < sz; i++) {
wsp_h8_putc(s[i]);
/* no flow control so wait for echo */
wsp_h8_getc();
}
wsp_h8_putc('\r');
wsp_h8_putc('\n');
}
static void wsp_h8_terminal_cmd(const char *cmd, int sz)
{
hard_irq_disable();
wsp_h8_puts(cmd, sz);
/* should never return, but just in case */
for (;;)
continue;
}
void wsp_h8_restart(char *cmd)
{
static const char restart[] = "warm-reset";
(void)cmd;
wsp_h8_terminal_cmd(restart, sizeof(restart) - 1);
}
void wsp_h8_power_off(void)
{
static const char off[] = "power-off";
wsp_h8_terminal_cmd(off, sizeof(off) - 1);
}
static void __iomem *wsp_h8_getaddr(void)
{
struct device_node *aliases;
struct device_node *uart;
struct property *path;
void __iomem *va = NULL;
/*
* there is nothing in the devtree to tell us which is mapped
* to the H8, but se know it is the second serial port.
*/
aliases = of_find_node_by_path("/aliases");
if (aliases == NULL)
return NULL;
path = of_find_property(aliases, "serial1", NULL);
if (path == NULL)
goto out;
uart = of_find_node_by_path(path->value);
if (uart == NULL)
goto out;
va = of_iomap(uart, 0);
/* remove it so no one messes with it */
of_detach_node(uart);
of_node_put(uart);
out:
of_node_put(aliases);
return va;
}
void __init wsp_setup_h8(void)
{
h8 = wsp_h8_getaddr();
/* Devtree change? lets hard map it anyway */
if (h8 == NULL) {
pr_warn("UART to H8 could not be found");
h8 = ioremap(0xffc0008000ULL, 0x100);
}
}

762
arch/powerpc/platforms/wsp/ics.c
View File

@ -1,762 +0,0 @@
/*
* Copyright 2008-2011 IBM Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/cpu.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/msi.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/smp.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/xics.h>
#include "wsp.h"
#include "ics.h"
/* WSP ICS */
struct wsp_ics {
struct ics ics;
struct device_node *dn;
void __iomem *regs;
spinlock_t lock;
unsigned long *bitmap;
u32 chip_id;
u32 lsi_base;
u32 lsi_count;
u64 hwirq_start;
u64 count;
#ifdef CONFIG_SMP
int *hwirq_cpu_map;
#endif
};
#define to_wsp_ics(ics) container_of(ics, struct wsp_ics, ics)
#define INT_SRC_LAYER_BUID_REG(base) ((base) + 0x00)
#define IODA_TBL_ADDR_REG(base) ((base) + 0x18)
#define IODA_TBL_DATA_REG(base) ((base) + 0x20)
#define XIVE_UPDATE_REG(base) ((base) + 0x28)
#define ICS_INT_CAPS_REG(base) ((base) + 0x30)
#define TBL_AUTO_INCREMENT ((1UL << 63) | (1UL << 15))
#define TBL_SELECT_XIST (1UL << 48)
#define TBL_SELECT_XIVT (1UL << 49)
#define IODA_IRQ(irq) ((irq) & (0x7FFULL)) /* HRM 5.1.3.4 */
#define XIST_REQUIRED 0x8
#define XIST_REJECTED 0x4
#define XIST_PRESENTED 0x2
#define XIST_PENDING 0x1
#define XIVE_SERVER_SHIFT 42
#define XIVE_SERVER_MASK 0xFFFFULL
#define XIVE_PRIORITY_MASK 0xFFULL
#define XIVE_PRIORITY_SHIFT 32
#define XIVE_WRITE_ENABLE (1ULL << 63)
/*
* The docs refer to a 6 bit field called ChipID, which consists of a
* 3 bit NodeID and a 3 bit ChipID. On WSP the ChipID is always zero
* so we ignore it, and every where we use "chip id" in this code we
* mean the NodeID.
*/
#define WSP_ICS_CHIP_SHIFT 17
static struct wsp_ics *ics_list;
static int num_ics;
/* ICS Source controller accessors */
static u64 wsp_ics_get_xive(struct wsp_ics *ics, unsigned int irq)
{
unsigned long flags;
u64 xive;
spin_lock_irqsave(&ics->lock, flags);
out_be64(IODA_TBL_ADDR_REG(ics->regs), TBL_SELECT_XIVT | IODA_IRQ(irq));
xive = in_be64(IODA_TBL_DATA_REG(ics->regs));
spin_unlock_irqrestore(&ics->lock, flags);
return xive;
}
static void wsp_ics_set_xive(struct wsp_ics *ics, unsigned int irq, u64 xive)
{
xive &= ~XIVE_ADDR_MASK;
xive |= (irq & XIVE_ADDR_MASK);
xive |= XIVE_WRITE_ENABLE;
out_be64(XIVE_UPDATE_REG(ics->regs), xive);
}
static u64 xive_set_server(u64 xive, unsigned int server)
{
u64 mask = ~(XIVE_SERVER_MASK << XIVE_SERVER_SHIFT);
xive &= mask;
xive |= (server & XIVE_SERVER_MASK) << XIVE_SERVER_SHIFT;
return xive;
}
static u64 xive_set_priority(u64 xive, unsigned int priority)
{
u64 mask = ~(XIVE_PRIORITY_MASK << XIVE_PRIORITY_SHIFT);
xive &= mask;
xive |= (priority & XIVE_PRIORITY_MASK) << XIVE_PRIORITY_SHIFT;
return xive;
}
#ifdef CONFIG_SMP
/* Find logical CPUs within mask on a given chip and store result in ret */
void cpus_on_chip(int chip_id, cpumask_t *mask, cpumask_t *ret)
{
int cpu, chip;
struct device_node *cpu_dn, *dn;
const u32 *prop;
cpumask_clear(ret);
for_each_cpu(cpu, mask) {
cpu_dn = of_get_cpu_node(cpu, NULL);
if (!cpu_dn)
continue;
prop = of_get_property(cpu_dn, "at-node", NULL);
if (!prop) {
of_node_put(cpu_dn);
continue;
}
dn = of_find_node_by_phandle(*prop);
of_node_put(cpu_dn);
chip = wsp_get_chip_id(dn);
if (chip == chip_id)
cpumask_set_cpu(cpu, ret);
of_node_put(dn);
}
}
/* Store a suitable CPU to handle a hwirq in the ics->hwirq_cpu_map cache */
static int cache_hwirq_map(struct wsp_ics *ics, unsigned int hwirq,
const cpumask_t *affinity)
{
cpumask_var_t avail, newmask;
int ret = -ENOMEM, cpu, cpu_rover = 0, target;
int index = hwirq - ics->hwirq_start;
unsigned int nodeid;
BUG_ON(index < 0 || index >= ics->count);
if (!ics->hwirq_cpu_map)
return -ENOMEM;
if (!distribute_irqs) {
ics->hwirq_cpu_map[hwirq - ics->hwirq_start] = xics_default_server;
return 0;
}
/* Allocate needed CPU masks */
if (!alloc_cpumask_var(&avail, GFP_KERNEL))
goto ret;
if (!alloc_cpumask_var(&newmask, GFP_KERNEL))
goto freeavail;
/* Find PBus attached to the source of this IRQ */
nodeid = (hwirq >> WSP_ICS_CHIP_SHIFT) & 0x3; /* 12:14 */
/* Find CPUs that could handle this IRQ */
if (affinity)
cpumask_and(avail, cpu_online_mask, affinity);
else
cpumask_copy(avail, cpu_online_mask);
/* Narrow selection down to logical CPUs on the same chip */
cpus_on_chip(nodeid, avail, newmask);
/* Ensure we haven't narrowed it down to 0 */
if (unlikely(cpumask_empty(newmask))) {
if (unlikely(cpumask_empty(avail))) {
ret = -1;
goto out;
}
cpumask_copy(newmask, avail);
}
/* Choose a CPU out of those we narrowed it down to in round robin */
target = hwirq % cpumask_weight(newmask);
for_each_cpu(cpu, newmask) {
if (cpu_rover++ >= target) {
ics->hwirq_cpu_map[index] = get_hard_smp_processor_id(cpu);
ret = 0;
goto out;
}
}
/* Shouldn't happen */
WARN_ON(1);
out:
free_cpumask_var(newmask);
freeavail:
free_cpumask_var(avail);
ret:
if (ret < 0) {
ics->hwirq_cpu_map[index] = cpumask_first(cpu_online_mask);
pr_warning("Error, falling hwirq 0x%x routing back to CPU %i\n",
hwirq, ics->hwirq_cpu_map[index]);
}
return ret;
}
static void alloc_irq_map(struct wsp_ics *ics)
{
int i;
ics->hwirq_cpu_map = kmalloc(sizeof(int) * ics->count, GFP_KERNEL);
if (!ics->hwirq_cpu_map) {
pr_warning("Allocate hwirq_cpu_map failed, "
"IRQ balancing disabled\n");
return;
}
for (i=0; i < ics->count; i++)
ics->hwirq_cpu_map[i] = xics_default_server;
}
static int get_irq_server(struct wsp_ics *ics, unsigned int hwirq)
{
int index = hwirq - ics->hwirq_start;
BUG_ON(index < 0 || index >= ics->count);
if (!ics->hwirq_cpu_map)
return xics_default_server;
return ics->hwirq_cpu_map[index];
}
#else /* !CONFIG_SMP */
static int cache_hwirq_map(struct wsp_ics *ics, unsigned int hwirq,
const cpumask_t *affinity)
{
return 0;
}
static int get_irq_server(struct wsp_ics *ics, unsigned int hwirq)
{
return xics_default_server;
}
static void alloc_irq_map(struct wsp_ics *ics) { }
#endif
static void wsp_chip_unmask_irq(struct irq_data *d)
{
unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
struct wsp_ics *ics;
int server;
u64 xive;
if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
return;
ics = d->chip_data;
if (WARN_ON(!ics))
return;
server = get_irq_server(ics, hw_irq);
xive = wsp_ics_get_xive(ics, hw_irq);
xive = xive_set_server(xive, server);
xive = xive_set_priority(xive, DEFAULT_PRIORITY);
wsp_ics_set_xive(ics, hw_irq, xive);
}
static unsigned int wsp_chip_startup(struct irq_data *d)
{
/* unmask it */
wsp_chip_unmask_irq(d);
return 0;
}
static void wsp_mask_real_irq(unsigned int hw_irq, struct wsp_ics *ics)
{
u64 xive;
if (hw_irq == XICS_IPI)
return;
if (WARN_ON(!ics))
return;
xive = wsp_ics_get_xive(ics, hw_irq);
xive = xive_set_server(xive, xics_default_server);
xive = xive_set_priority(xive, LOWEST_PRIORITY);
wsp_ics_set_xive(ics, hw_irq, xive);
}
static void wsp_chip_mask_irq(struct irq_data *d)
{
unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
struct wsp_ics *ics = d->chip_data;
if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
return;
wsp_mask_real_irq(hw_irq, ics);
}
static int wsp_chip_set_affinity(struct irq_data *d,
const struct cpumask *cpumask, bool force)
{
unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
struct wsp_ics *ics;
int ret;
u64 xive;
if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
return -1;
ics = d->chip_data;
if (WARN_ON(!ics))
return -1;
xive = wsp_ics_get_xive(ics, hw_irq);
/*
* For the moment only implement delivery to all cpus or one cpu.
* Get current irq_server for the given irq
*/
ret = cache_hwirq_map(ics, hw_irq, cpumask);
if (ret == -1) {
char cpulist[128];
cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
pr_warning("%s: No online cpus in the mask %s for irq %d\n",
__func__, cpulist, d->irq);
return -1;
} else if (ret == -ENOMEM) {
pr_warning("%s: Out of memory\n", __func__);
return -1;
}
xive = xive_set_server(xive, get_irq_server(ics, hw_irq));
wsp_ics_set_xive(ics, hw_irq, xive);
return IRQ_SET_MASK_OK;
}
static struct irq_chip wsp_irq_chip = {
.name = "WSP ICS",
.irq_startup = wsp_chip_startup,
.irq_mask = wsp_chip_mask_irq,
.irq_unmask = wsp_chip_unmask_irq,
.irq_set_affinity = wsp_chip_set_affinity
};
static int wsp_ics_host_match(struct ics *ics, struct device_node *dn)
{
/* All ICSs in the system implement a global irq number space,
* so match against them all. */
return of_device_is_compatible(dn, "ibm,ppc-xics");
}
static int wsp_ics_match_hwirq(struct wsp_ics *wsp_ics, unsigned int hwirq)
{
if (hwirq >= wsp_ics->hwirq_start &&
hwirq < wsp_ics->hwirq_start + wsp_ics->count)
return 1;
return 0;
}
static int wsp_ics_map(struct ics *ics, unsigned int virq)
{
struct wsp_ics *wsp_ics = to_wsp_ics(ics);
unsigned int hw_irq = virq_to_hw(virq);
unsigned long flags;
if (!wsp_ics_match_hwirq(wsp_ics, hw_irq))
return -ENOENT;
irq_set_chip_and_handler(virq, &wsp_irq_chip, handle_fasteoi_irq);
irq_set_chip_data(virq, wsp_ics);
spin_lock_irqsave(&wsp_ics->lock, flags);
bitmap_allocate_region(wsp_ics->bitmap, hw_irq - wsp_ics->hwirq_start, 0);
spin_unlock_irqrestore(&wsp_ics->lock, flags);
return 0;
}
static void wsp_ics_mask_unknown(struct ics *ics, unsigned long hw_irq)
{
struct wsp_ics *wsp_ics = to_wsp_ics(ics);
if (!wsp_ics_match_hwirq(wsp_ics, hw_irq))
return;
pr_err("%s: IRQ %lu (real) is invalid, disabling it.\n", __func__, hw_irq);
wsp_mask_real_irq(hw_irq, wsp_ics);
}
static long wsp_ics_get_server(struct ics *ics, unsigned long hw_irq)
{
struct wsp_ics *wsp_ics = to_wsp_ics(ics);
if (!wsp_ics_match_hwirq(wsp_ics, hw_irq))
return -ENOENT;
return get_irq_server(wsp_ics, hw_irq);
}
/* HW Number allocation API */
static struct wsp_ics *wsp_ics_find_dn_ics(struct device_node *dn)
{
struct device_node *iparent;
int i;
iparent = of_irq_find_parent(dn);
if (!iparent) {
pr_err("wsp_ics: Failed to find interrupt parent!\n");
return NULL;
}
for(i = 0; i < num_ics; i++) {
if(ics_list[i].dn == iparent)
break;
}
if (i >= num_ics) {
pr_err("wsp_ics: Unable to find parent bitmap!\n");
return NULL;
}
return &ics_list[i];
}
int wsp_ics_alloc_irq(struct device_node *dn, int num)
{
struct wsp_ics *ics;
int order, offset;
ics = wsp_ics_find_dn_ics(dn);
if (!ics)
return -ENODEV;
/* Fast, but overly strict if num isn't a power of two */
order = get_count_order(num);
spin_lock_irq(&ics->lock);
offset = bitmap_find_free_region(ics->bitmap, ics->count, order);
spin_unlock_irq(&ics->lock);
if (offset < 0)
return offset;
return offset + ics->hwirq_start;
}
void wsp_ics_free_irq(struct device_node *dn, unsigned int irq)
{
struct wsp_ics *ics;
ics = wsp_ics_find_dn_ics(dn);
if (WARN_ON(!ics))
return;
spin_lock_irq(&ics->lock);
bitmap_release_region(ics->bitmap, irq, 0);
spin_unlock_irq(&ics->lock);
}
/* Initialisation */
static int __init wsp_ics_bitmap_setup(struct wsp_ics *ics,
struct device_node *dn)
{
int len, i, j, size;
u32 start, count;
const u32 *p;
size = BITS_TO_LONGS(ics->count) * sizeof(long);
ics->bitmap = kzalloc(size, GFP_KERNEL);
if (!ics->bitmap) {
pr_err("wsp_ics: ENOMEM allocating IRQ bitmap!\n");
return -ENOMEM;
}
spin_lock_init(&ics->lock);
p = of_get_property(dn, "available-ranges", &len);
if (!p || !len) {
/* FIXME this should be a WARN() once mambo is updated */
pr_err("wsp_ics: No available-ranges defined for %s\n",
dn->full_name);
return 0;
}
if (len % (2 * sizeof(u32)) != 0) {
/* FIXME this should be a WARN() once mambo is updated */
pr_err("wsp_ics: Invalid available-ranges for %s\n",
dn->full_name);
return 0;
}
bitmap_fill(ics->bitmap, ics->count);
for (i = 0; i < len / sizeof(u32); i += 2) {
start = of_read_number(p + i, 1);
count = of_read_number(p + i + 1, 1);
pr_devel("%s: start: %d count: %d\n", __func__, start, count);
if ((start + count) > (ics->hwirq_start + ics->count) ||
start < ics->hwirq_start) {
pr_err("wsp_ics: Invalid range! -> %d to %d\n",
start, start + count);
break;
}
for (j = 0; j < count; j++)
bitmap_release_region(ics->bitmap,
(start + j) - ics->hwirq_start, 0);
}
/* Ensure LSIs are not available for allocation */
bitmap_allocate_region(ics->bitmap, ics->lsi_base,
get_count_order(ics->lsi_count));
return 0;
}
static int __init wsp_ics_setup(struct wsp_ics *ics, struct device_node *dn)
{
u32 lsi_buid, msi_buid, msi_base, msi_count;
void __iomem *regs;
const u32 *p;
int rc, len, i;
u64 caps, buid;
p = of_get_property(dn, "interrupt-ranges", &len);
if (!p || len < (2 * sizeof(u32))) {
pr_err("wsp_ics: No/bad interrupt-ranges found on %s\n",
dn->full_name);
return -ENOENT;
}
if (len > (2 * sizeof(u32))) {
pr_err("wsp_ics: Multiple ics ranges not supported.\n");
return -EINVAL;
}
regs = of_iomap(dn, 0);
if (!regs) {
pr_err("wsp_ics: of_iomap(%s) failed\n", dn->full_name);
return -ENXIO;
}
ics->hwirq_start = of_read_number(p, 1);
ics->count = of_read_number(p + 1, 1);
ics->regs = regs;
ics->chip_id = wsp_get_chip_id(dn);
if (WARN_ON(ics->chip_id < 0))
ics->chip_id = 0;
/* Get some informations about the critter */
caps = in_be64(ICS_INT_CAPS_REG(ics->regs));
buid = in_be64(INT_SRC_LAYER_BUID_REG(ics->regs));
ics->lsi_count = caps >> 56;
msi_count = (caps >> 44) & 0x7ff;
/* Note: LSI BUID is 9 bits, but really only 3 are BUID and the
* rest is mixed in the interrupt number. We store the whole
* thing though
*/
lsi_buid = (buid >> 48) & 0x1ff;
ics->lsi_base = (ics->chip_id << WSP_ICS_CHIP_SHIFT) | lsi_buid << 5;
msi_buid = (buid >> 37) & 0x7;
msi_base = (ics->chip_id << WSP_ICS_CHIP_SHIFT) | msi_buid << 11;
pr_info("wsp_ics: Found %s\n", dn->full_name);
pr_info("wsp_ics: irq range : 0x%06llx..0x%06llx\n",
ics->hwirq_start, ics->hwirq_start + ics->count - 1);
pr_info("wsp_ics: %4d LSIs : 0x%06x..0x%06x\n",
ics->lsi_count, ics->lsi_base,
ics->lsi_base + ics->lsi_count - 1);
pr_info("wsp_ics: %4d MSIs : 0x%06x..0x%06x\n",
msi_count, msi_base,
msi_base + msi_count - 1);
/* Let's check the HW config is sane */
if (ics->lsi_base < ics->hwirq_start ||
(ics->lsi_base + ics->lsi_count) > (ics->hwirq_start + ics->count))
pr_warning("wsp_ics: WARNING ! LSIs out of interrupt-ranges !\n");
if (msi_base < ics->hwirq_start ||
(msi_base + msi_count) > (ics->hwirq_start + ics->count))
pr_warning("wsp_ics: WARNING ! MSIs out of interrupt-ranges !\n");
/* We don't check for overlap between LSI and MSI, which will happen
* if we use the same BUID, I'm not sure yet how legit that is.
*/
rc = wsp_ics_bitmap_setup(ics, dn);
if (rc) {
iounmap(regs);
return rc;
}
ics->dn = of_node_get(dn);
alloc_irq_map(ics);
for(i = 0; i < ics->count; i++)
wsp_mask_real_irq(ics->hwirq_start + i, ics);
ics->ics.map = wsp_ics_map;
ics->ics.mask_unknown = wsp_ics_mask_unknown;
ics->ics.get_server = wsp_ics_get_server;
ics->ics.host_match = wsp_ics_host_match;
xics_register_ics(&ics->ics);
return 0;
}
static void __init wsp_ics_set_default_server(void)
{
struct device_node *np;
u32 hwid;
/* Find the server number for the boot cpu. */
np = of_get_cpu_node(boot_cpuid, NULL);
BUG_ON(!np);
hwid = get_hard_smp_processor_id(boot_cpuid);
pr_info("wsp_ics: default server is %#x, CPU %s\n", hwid, np->full_name);
xics_default_server = hwid;
of_node_put(np);
}
static int __init wsp_ics_init(void)
{
struct device_node *dn;
struct wsp_ics *ics;
int rc, found;
wsp_ics_set_default_server();
found = 0;
for_each_compatible_node(dn, NULL, "ibm,ppc-xics")
found++;
if (found == 0) {
pr_err("wsp_ics: No ICS's found!\n");
return -ENODEV;
}
ics_list = kmalloc(sizeof(*ics) * found, GFP_KERNEL);
if (!ics_list) {
pr_err("wsp_ics: No memory for structs.\n");
return -ENOMEM;
}
num_ics = 0;
ics = ics_list;
for_each_compatible_node(dn, NULL, "ibm,wsp-xics") {
rc = wsp_ics_setup(ics, dn);
if (rc == 0) {
ics++;
num_ics++;
}
}
if (found != num_ics) {
pr_err("wsp_ics: Failed setting up %d ICS's\n",
found - num_ics);
return -1;
}
return 0;
}
void __init wsp_init_irq(void)
{
wsp_ics_init();
xics_init();
/* We need to patch our irq chip's EOI to point to the right ICP */
wsp_irq_chip.irq_eoi = icp_ops->eoi;
}
#ifdef CONFIG_PCI_MSI
static void wsp_ics_msi_unmask_irq(struct irq_data *d)
{
wsp_chip_unmask_irq(d);
unmask_msi_irq(d);
}
static unsigned int wsp_ics_msi_startup(struct irq_data *d)
{
wsp_ics_msi_unmask_irq(d);
return 0;
}
static void wsp_ics_msi_mask_irq(struct irq_data *d)
{
mask_msi_irq(d);
wsp_chip_mask_irq(d);
}
/*
* we do it this way because we reassinge default EOI handling in
* irq_init() above
*/
static void wsp_ics_eoi(struct irq_data *data)
{
wsp_irq_chip.irq_eoi(data);
}
static struct irq_chip wsp_ics_msi = {
.name = "WSP ICS MSI",
.irq_startup = wsp_ics_msi_startup,
.irq_mask = wsp_ics_msi_mask_irq,
.irq_unmask = wsp_ics_msi_unmask_irq,
.irq_eoi = wsp_ics_eoi,
.irq_set_affinity = wsp_chip_set_affinity
};
void wsp_ics_set_msi_chip(unsigned int irq)
{
irq_set_chip(irq, &wsp_ics_msi);
}
void wsp_ics_set_std_chip(unsigned int irq)
{
irq_set_chip(irq, &wsp_irq_chip);
}
#endif /* CONFIG_PCI_MSI */

25
arch/powerpc/platforms/wsp/ics.h
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@ -1,25 +0,0 @@
/*
* Copyright 2009 IBM Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __ICS_H
#define __ICS_H
#define XIVE_ADDR_MASK 0x7FFULL
extern void wsp_init_irq(void);
extern int wsp_ics_alloc_irq(struct device_node *dn, int num);
extern void wsp_ics_free_irq(struct device_node *dn, unsigned int irq);
#ifdef CONFIG_PCI_MSI
extern void wsp_ics_set_msi_chip(unsigned int irq);
extern void wsp_ics_set_std_chip(unsigned int irq);
#endif /* CONFIG_PCI_MSI */
#endif /* __ICS_H */

102
arch/powerpc/platforms/wsp/msi.c
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@ -1,102 +0,0 @@
/*
* Copyright 2011 Michael Ellerman, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/msi.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include "msi.h"
#include "ics.h"
#include "wsp_pci.h"
/* Magic addresses for 32 & 64-bit MSIs with hardcoded MVE 0 */
#define MSI_ADDR_32 0xFFFF0000ul
#define MSI_ADDR_64 0x1000000000000000ul
int wsp_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
{
struct pci_controller *phb;
struct msi_desc *entry;
struct msi_msg msg;
unsigned int virq;
int hwirq;
phb = pci_bus_to_host(dev->bus);
if (!phb)
return -ENOENT;
entry = list_first_entry(&dev->msi_list, struct msi_desc, list);
if (entry->msi_attrib.is_64) {
msg.address_lo = 0;
msg.address_hi = MSI_ADDR_64 >> 32;
} else {
msg.address_lo = MSI_ADDR_32;
msg.address_hi = 0;
}
list_for_each_entry(entry, &dev->msi_list, list) {
hwirq = wsp_ics_alloc_irq(phb->dn, 1);
if (hwirq < 0) {
dev_warn(&dev->dev, "wsp_msi: hwirq alloc failed!\n");
return hwirq;
}
virq = irq_create_mapping(NULL, hwirq);
if (virq == NO_IRQ) {
dev_warn(&dev->dev, "wsp_msi: virq alloc failed!\n");
return -1;
}
dev_dbg(&dev->dev, "wsp_msi: allocated irq %#x/%#x\n",
hwirq, virq);
wsp_ics_set_msi_chip(virq);
irq_set_msi_desc(virq, entry);
msg.data = hwirq & XIVE_ADDR_MASK;
write_msi_msg(virq, &msg);
}
return 0;
}
void wsp_teardown_msi_irqs(struct pci_dev *dev)
{
struct pci_controller *phb;
struct msi_desc *entry;
int hwirq;
phb = pci_bus_to_host(dev->bus);
dev_dbg(&dev->dev, "wsp_msi: tearing down msi irqs\n");
list_for_each_entry(entry, &dev->msi_list, list) {
if (entry->irq == NO_IRQ)
continue;
irq_set_msi_desc(entry->irq, NULL);
wsp_ics_set_std_chip(entry->irq);
hwirq = virq_to_hw(entry->irq);
/* In this order to avoid racing with irq_create_mapping() */
irq_dispose_mapping(entry->irq);
wsp_ics_free_irq(phb->dn, hwirq);
}
}
void wsp_setup_phb_msi(struct pci_controller *phb)
{
/* Create a single MVE at offset 0 that matches everything */
out_be64(phb->cfg_data + PCIE_REG_IODA_ADDR, PCIE_REG_IODA_AD_TBL_MVT);
out_be64(phb->cfg_data + PCIE_REG_IODA_DATA0, 1ull << 63);
ppc_md.setup_msi_irqs = wsp_setup_msi_irqs;
ppc_md.teardown_msi_irqs = wsp_teardown_msi_irqs;
}

19
arch/powerpc/platforms/wsp/msi.h
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@ -1,19 +0,0 @@
/*
* Copyright 2011 Michael Ellerman, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __WSP_MSI_H
#define __WSP_MSI_H
#ifdef CONFIG_PCI_MSI
extern void wsp_setup_phb_msi(struct pci_controller *phb);
#else
static inline void wsp_setup_phb_msi(struct pci_controller *phb) { }
#endif
#endif /* __WSP_MSI_H */

321
arch/powerpc/platforms/wsp/opb_pic.c
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@ -1,321 +0,0 @@
/*
* IBM Onboard Peripheral Bus Interrupt Controller
*
* Copyright 2010 Jack Miller, IBM Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <asm/reg_a2.h>
#include <asm/irq.h>
#define OPB_NR_IRQS 32
#define OPB_MLSASIER 0x04 /* MLS Accumulated Status IER */
#define OPB_MLSIR 0x50 /* MLS Interrupt Register */
#define OPB_MLSIER 0x54 /* MLS Interrupt Enable Register */
#define OPB_MLSIPR 0x58 /* MLS Interrupt Polarity Register */
#define OPB_MLSIIR 0x5c /* MLS Interrupt Inputs Register */
static int opb_index = 0;
struct opb_pic {
struct irq_domain *host;
void *regs;
int index;
spinlock_t lock;
};
static u32 opb_in(struct opb_pic *opb, int offset)
{
return in_be32(opb->regs + offset);
}
static void opb_out(struct opb_pic *opb, int offset, u32 val)
{
out_be32(opb->regs + offset, val);
}
static void opb_unmask_irq(struct irq_data *d)
{
struct opb_pic *opb;
unsigned long flags;
u32 ier, bitset;
opb = d->chip_data;
bitset = (1 << (31 - irqd_to_hwirq(d)));
spin_lock_irqsave(&opb->lock, flags);
ier = opb_in(opb, OPB_MLSIER);
opb_out(opb, OPB_MLSIER, ier | bitset);
ier = opb_in(opb, OPB_MLSIER);
spin_unlock_irqrestore(&opb->lock, flags);
}
static void opb_mask_irq(struct irq_data *d)
{
struct opb_pic *opb;
unsigned long flags;
u32 ier, mask;
opb = d->chip_data;
mask = ~(1 << (31 - irqd_to_hwirq(d)));
spin_lock_irqsave(&opb->lock, flags);
ier = opb_in(opb, OPB_MLSIER);
opb_out(opb, OPB_MLSIER, ier & mask);
ier = opb_in(opb, OPB_MLSIER); // Flush posted writes
spin_unlock_irqrestore(&opb->lock, flags);
}
static void opb_ack_irq(struct irq_data *d)
{
struct opb_pic *opb;
unsigned long flags;
u32 bitset;
opb = d->chip_data;
bitset = (1 << (31 - irqd_to_hwirq(d)));
spin_lock_irqsave(&opb->lock, flags);
opb_out(opb, OPB_MLSIR, bitset);
opb_in(opb, OPB_MLSIR); // Flush posted writes
spin_unlock_irqrestore(&opb->lock, flags);
}
static void opb_mask_ack_irq(struct irq_data *d)
{
struct opb_pic *opb;
unsigned long flags;
u32 bitset;
u32 ier, ir;
opb = d->chip_data;
bitset = (1 << (31 - irqd_to_hwirq(d)));
spin_lock_irqsave(&opb->lock, flags);
ier = opb_in(opb, OPB_MLSIER);
opb_out(opb, OPB_MLSIER, ier & ~bitset);
ier = opb_in(opb, OPB_MLSIER); // Flush posted writes
opb_out(opb, OPB_MLSIR, bitset);
ir = opb_in(opb, OPB_MLSIR); // Flush posted writes
spin_unlock_irqrestore(&opb->lock, flags);
}
static int opb_set_irq_type(struct irq_data *d, unsigned int flow)
{
struct opb_pic *opb;
unsigned long flags;
int invert, ipr, mask, bit;
opb = d->chip_data;
/* The only information we're interested in in the type is whether it's
* a high or low trigger. For high triggered interrupts, the polarity
* set for it in the MLS Interrupt Polarity Register is 0, for low
* interrupts it's 1 so that the proper input in the MLS Interrupt Input
* Register is interrupted as asserting the interrupt. */
switch (flow) {
case IRQ_TYPE_NONE:
opb_mask_irq(d);
return 0;
case IRQ_TYPE_LEVEL_HIGH:
invert = 0;
break;
case IRQ_TYPE_LEVEL_LOW:
invert = 1;
break;
default:
return -EINVAL;
}
bit = (1 << (31 - irqd_to_hwirq(d)));
mask = ~bit;
spin_lock_irqsave(&opb->lock, flags);
ipr = opb_in(opb, OPB_MLSIPR);
ipr = (ipr & mask) | (invert ? bit : 0);
opb_out(opb, OPB_MLSIPR, ipr);
ipr = opb_in(opb, OPB_MLSIPR); // Flush posted writes
spin_unlock_irqrestore(&opb->lock, flags);
/* Record the type in the interrupt descriptor */
irqd_set_trigger_type(d, flow);
return 0;
}
static struct irq_chip opb_irq_chip = {
.name = "OPB",
.irq_mask = opb_mask_irq,
.irq_unmask = opb_unmask_irq,
.irq_mask_ack = opb_mask_ack_irq,
.irq_ack = opb_ack_irq,
.irq_set_type = opb_set_irq_type
};
static int opb_host_map(struct irq_domain *host, unsigned int virq,
irq_hw_number_t hwirq)
{
struct opb_pic *opb;
opb = host->host_data;
/* Most of the important stuff is handled by the generic host code, like
* the lookup, so just attach some info to the virtual irq */
irq_set_chip_data(virq, opb);
irq_set_chip_and_handler(virq, &opb_irq_chip, handle_level_irq);
irq_set_irq_type(virq, IRQ_TYPE_NONE);
return 0;
}
static const struct irq_domain_ops opb_host_ops = {
.map = opb_host_map,
.xlate = irq_domain_xlate_twocell,
};
irqreturn_t opb_irq_handler(int irq, void *private)
{
struct opb_pic *opb;
u32 ir, src, subvirq;
opb = (struct opb_pic *) private;
/* Read the OPB MLS Interrupt Register for
* asserted interrupts */
ir = opb_in(opb, OPB_MLSIR);
if (!ir)
return IRQ_NONE;
do {
/* Get 1 - 32 source, *NOT* bit */
src = 32 - ffs(ir);
/* Translate from the OPB's conception of interrupt number to
* Linux's virtual IRQ */
subvirq = irq_linear_revmap(opb->host, src);
generic_handle_irq(subvirq);
} while ((ir = opb_in(opb, OPB_MLSIR)));
return IRQ_HANDLED;
}
struct opb_pic *opb_pic_init_one(struct device_node *dn)
{
struct opb_pic *opb;
struct resource res;
if (of_address_to_resource(dn, 0, &res)) {
printk(KERN_ERR "opb: Couldn't translate resource\n");
return NULL;
}
opb = kzalloc(sizeof(struct opb_pic), GFP_KERNEL);
if (!opb) {
printk(KERN_ERR "opb: Failed to allocate opb struct!\n");
return NULL;
}
/* Get access to the OPB MMIO registers */
opb->regs = ioremap(res.start + 0x10000, 0x1000);
if (!opb->regs) {
printk(KERN_ERR "opb: Failed to allocate register space!\n");
goto free_opb;
}
/* Allocate an irq domain so that Linux knows that despite only
* having one interrupt to issue, we're the controller for multiple
* hardware IRQs, so later we can lookup their virtual IRQs. */
opb->host = irq_domain_add_linear(dn, OPB_NR_IRQS, &opb_host_ops, opb);
if (!opb->host) {
printk(KERN_ERR "opb: Failed to allocate IRQ host!\n");
goto free_regs;
}
opb->index = opb_index++;
spin_lock_init(&opb->lock);
/* Disable all interrupts by default */
opb_out(opb, OPB_MLSASIER, 0);
opb_out(opb, OPB_MLSIER, 0);
/* ACK any interrupts left by FW */
opb_out(opb, OPB_MLSIR, 0xFFFFFFFF);
return opb;
free_regs:
iounmap(opb->regs);
free_opb:
kfree(opb);
return NULL;
}
void __init opb_pic_init(void)
{
struct device_node *dn;
struct opb_pic *opb;
int virq;
int rc;
/* Call init_one for each OPB device */
for_each_compatible_node(dn, NULL, "ibm,opb") {
/* Fill in an OPB struct */
opb = opb_pic_init_one(dn);
if (!opb) {
printk(KERN_WARNING "opb: Failed to init node, skipped!\n");
continue;
}
/* Map / get opb's hardware virtual irq */
virq = irq_of_parse_and_map(dn, 0);
if (virq <= 0) {
printk("opb: irq_op_parse_and_map failed!\n");
continue;
}
/* Attach opb interrupt handler to new virtual IRQ */
rc = request_irq(virq, opb_irq_handler, IRQF_NO_THREAD,
"OPB LS Cascade", opb);
if (rc) {
printk("opb: request_irq failed: %d\n", rc);
continue;
}
printk("OPB%d init with %d IRQs at %p\n", opb->index,
OPB_NR_IRQS, opb->regs);
}
}

67
arch/powerpc/platforms/wsp/psr2.c
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@ -1,67 +0,0 @@
/*
* Copyright 2008-2011, IBM Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/of.h>
#include <linux/smp.h>
#include <linux/time.h>
#include <linux/of_fdt.h>
#include <asm/machdep.h>
#include <asm/udbg.h>
#include "ics.h"
#include "wsp.h"
static void psr2_spin(void)
{
hard_irq_disable();
for (;;)
continue;
}
static void psr2_restart(char *cmd)
{
psr2_spin();
}
static int __init psr2_probe(void)
{
unsigned long root = of_get_flat_dt_root();
if (of_flat_dt_is_compatible(root, "ibm,wsp-chroma")) {
/* chroma systems also claim they are psr2s */
return 0;
}
if (!of_flat_dt_is_compatible(root, "ibm,psr2"))
return 0;
return 1;
}
define_machine(psr2_md) {
.name = "PSR2 A2",
.probe = psr2_probe,
.setup_arch = wsp_setup_arch,
.restart = psr2_restart,
.power_off = psr2_spin,
.halt = psr2_spin,
.calibrate_decr = generic_calibrate_decr,
.init_IRQ = wsp_setup_irq,
.progress = udbg_progress,
.power_save = book3e_idle,
};
machine_arch_initcall(psr2_md, wsp_probe_devices);

435
arch/powerpc/platforms/wsp/scom_smp.c
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@ -1,435 +0,0 @@
/*
* SCOM support for A2 platforms
*
* Copyright 2007-2011 Benjamin Herrenschmidt, David Gibson,
* Michael Ellerman, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/cpumask.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <asm/cputhreads.h>
#include <asm/reg_a2.h>
#include <asm/scom.h>
#include <asm/udbg.h>
#include <asm/code-patching.h>
#include "wsp.h"
#define SCOM_RAMC 0x2a /* Ram Command */
#define SCOM_RAMC_TGT1_EXT 0x80000000
#define SCOM_RAMC_SRC1_EXT 0x40000000
#define SCOM_RAMC_SRC2_EXT 0x20000000
#define SCOM_RAMC_SRC3_EXT 0x10000000
#define SCOM_RAMC_ENABLE 0x00080000
#define SCOM_RAMC_THREADSEL 0x00060000
#define SCOM_RAMC_EXECUTE 0x00010000
#define SCOM_RAMC_MSR_OVERRIDE 0x00008000
#define SCOM_RAMC_MSR_PR 0x00004000
#define SCOM_RAMC_MSR_GS 0x00002000
#define SCOM_RAMC_FORCE 0x00001000
#define SCOM_RAMC_FLUSH 0x00000800
#define SCOM_RAMC_INTERRUPT 0x00000004
#define SCOM_RAMC_ERROR 0x00000002
#define SCOM_RAMC_DONE 0x00000001
#define SCOM_RAMI 0x29 /* Ram Instruction */
#define SCOM_RAMIC 0x28 /* Ram Instruction and Command */
#define SCOM_RAMIC_INSN 0xffffffff00000000
#define SCOM_RAMD 0x2d /* Ram Data */
#define SCOM_RAMDH 0x2e /* Ram Data High */
#define SCOM_RAMDL 0x2f /* Ram Data Low */
#define SCOM_PCCR0 0x33 /* PC Configuration Register 0 */
#define SCOM_PCCR0_ENABLE_DEBUG 0x80000000
#define SCOM_PCCR0_ENABLE_RAM 0x40000000
#define SCOM_THRCTL 0x30 /* Thread Control and Status */
#define SCOM_THRCTL_T0_STOP 0x80000000
#define SCOM_THRCTL_T1_STOP 0x40000000
#define SCOM_THRCTL_T2_STOP 0x20000000
#define SCOM_THRCTL_T3_STOP 0x10000000
#define SCOM_THRCTL_T0_STEP 0x08000000
#define SCOM_THRCTL_T1_STEP 0x04000000
#define SCOM_THRCTL_T2_STEP 0x02000000
#define SCOM_THRCTL_T3_STEP 0x01000000
#define SCOM_THRCTL_T0_RUN 0x00800000
#define SCOM_THRCTL_T1_RUN 0x00400000
#define SCOM_THRCTL_T2_RUN 0x00200000
#define SCOM_THRCTL_T3_RUN 0x00100000
#define SCOM_THRCTL_T0_PM 0x00080000
#define SCOM_THRCTL_T1_PM 0x00040000
#define SCOM_THRCTL_T2_PM 0x00020000
#define SCOM_THRCTL_T3_PM 0x00010000
#define SCOM_THRCTL_T0_UDE 0x00008000
#define SCOM_THRCTL_T1_UDE 0x00004000
#define SCOM_THRCTL_T2_UDE 0x00002000
#define SCOM_THRCTL_T3_UDE 0x00001000
#define SCOM_THRCTL_ASYNC_DIS 0x00000800
#define SCOM_THRCTL_TB_DIS 0x00000400
#define SCOM_THRCTL_DEC_DIS 0x00000200
#define SCOM_THRCTL_AND 0x31 /* Thread Control and Status */
#define SCOM_THRCTL_OR 0x32 /* Thread Control and Status */
static DEFINE_PER_CPU(scom_map_t, scom_ptrs);
static scom_map_t get_scom(int cpu, struct device_node *np, int *first_thread)
{
scom_map_t scom = per_cpu(scom_ptrs, cpu);
int tcpu;
if (scom_map_ok(scom)) {
*first_thread = 0;
return scom;
}
*first_thread = 1;
scom = scom_map_device(np, 0);
for (tcpu = cpu_first_thread_sibling(cpu);
tcpu <= cpu_last_thread_sibling(cpu); tcpu++)
per_cpu(scom_ptrs, tcpu) = scom;
/* Hack: for the boot core, this will actually get called on
* the second thread up, not the first so our test above will
* set first_thread incorrectly. */
if (cpu_first_thread_sibling(cpu) == 0)
*first_thread = 0;
return scom;
}
static int a2_scom_ram(scom_map_t scom, int thread, u32 insn, int extmask)
{
u64 cmd, mask, val;
int n = 0;
cmd = ((u64)insn << 32) | (((u64)extmask & 0xf) << 28)
| ((u64)thread << 17) | SCOM_RAMC_ENABLE | SCOM_RAMC_EXECUTE;
mask = SCOM_RAMC_DONE | SCOM_RAMC_INTERRUPT | SCOM_RAMC_ERROR;
scom_write(scom, SCOM_RAMIC, cmd);
for (;;) {
if (scom_read(scom, SCOM_RAMC, &val) != 0) {
pr_err("SCOM error on instruction 0x%08x, thread %d\n",
insn, thread);
return -1;
}
if (val & mask)
break;
pr_devel("Waiting on RAMC = 0x%llx\n", val);
if (++n == 3) {
pr_err("RAMC timeout on instruction 0x%08x, thread %d\n",
insn, thread);
return -1;
}
}
if (val & SCOM_RAMC_INTERRUPT) {
pr_err("RAMC interrupt on instruction 0x%08x, thread %d\n",
insn, thread);
return -SCOM_RAMC_INTERRUPT;
}
if (val & SCOM_RAMC_ERROR) {
pr_err("RAMC error on instruction 0x%08x, thread %d\n",
insn, thread);
return -SCOM_RAMC_ERROR;
}
return 0;
}
static int a2_scom_getgpr(scom_map_t scom, int thread, int gpr, int alt,
u64 *out_gpr)
{
int rc;
/* or rN, rN, rN */
u32 insn = 0x7c000378 | (gpr << 21) | (gpr << 16) | (gpr << 11);
rc = a2_scom_ram(scom, thread, insn, alt ? 0xf : 0x0);
if (rc)
return rc;
return scom_read(scom, SCOM_RAMD, out_gpr);
}
static int a2_scom_getspr(scom_map_t scom, int thread, int spr, u64 *out_spr)
{
int rc, sprhi, sprlo;
u32 insn;
sprhi = spr >> 5;
sprlo = spr & 0x1f;
insn = 0x7c2002a6 | (sprlo << 16) | (sprhi << 11); /* mfspr r1,spr */
if (spr == 0x0ff0)
insn = 0x7c2000a6; /* mfmsr r1 */
rc = a2_scom_ram(scom, thread, insn, 0xf);
if (rc)
return rc;
return a2_scom_getgpr(scom, thread, 1, 1, out_spr);
}
static int a2_scom_setgpr(scom_map_t scom, int thread, int gpr,
int alt, u64 val)
{
u32 lis = 0x3c000000 | (gpr << 21);
u32 li = 0x38000000 | (gpr << 21);
u32 oris = 0x64000000 | (gpr << 21) | (gpr << 16);
u32 ori = 0x60000000 | (gpr << 21) | (gpr << 16);
u32 rldicr32 = 0x780007c6 | (gpr << 21) | (gpr << 16);
u32 highest = val >> 48;
u32 higher = (val >> 32) & 0xffff;
u32 high = (val >> 16) & 0xffff;
u32 low = val & 0xffff;
int lext = alt ? 0x8 : 0x0;
int oext = alt ? 0xf : 0x0;
int rc = 0;
if (highest)
rc |= a2_scom_ram(scom, thread, lis | highest, lext);
if (higher) {
if (highest)
rc |= a2_scom_ram(scom, thread, oris | higher, oext);
else
rc |= a2_scom_ram(scom, thread, li | higher, lext);
}
if (highest || higher)
rc |= a2_scom_ram(scom, thread, rldicr32, oext);
if (high) {
if (highest || higher)
rc |= a2_scom_ram(scom, thread, oris | high, oext);
else
rc |= a2_scom_ram(scom, thread, lis | high, lext);
}
if (highest || higher || high)
rc |= a2_scom_ram(scom, thread, ori | low, oext);
else
rc |= a2_scom_ram(scom, thread, li | low, lext);
return rc;
}
static int a2_scom_setspr(scom_map_t scom, int thread, int spr, u64 val)
{
int sprhi = spr >> 5;
int sprlo = spr & 0x1f;
/* mtspr spr, r1 */
u32 insn = 0x7c2003a6 | (sprlo << 16) | (sprhi << 11);
if (spr == 0x0ff0)
insn = 0x7c200124; /* mtmsr r1 */
if (a2_scom_setgpr(scom, thread, 1, 1, val))
return -1;
return a2_scom_ram(scom, thread, insn, 0xf);
}
static int a2_scom_initial_tlb(scom_map_t scom, int thread)
{
extern u32 a2_tlbinit_code_start[], a2_tlbinit_code_end[];
extern u32 a2_tlbinit_after_iprot_flush[];
extern u32 a2_tlbinit_after_linear_map[];
u32 assoc, entries, i;
u64 epn, tlbcfg;
u32 *p;
int rc;
/* Invalidate all entries (including iprot) */
rc = a2_scom_getspr(scom, thread, SPRN_TLB0CFG, &tlbcfg);
if (rc)
goto scom_fail;
entries = tlbcfg & TLBnCFG_N_ENTRY;
assoc = (tlbcfg & TLBnCFG_ASSOC) >> 24;
epn = 0;
/* Set MMUCR2 to enable 4K, 64K, 1M, 16M and 1G pages */
a2_scom_setspr(scom, thread, SPRN_MMUCR2, 0x000a7531);
/* Set MMUCR3 to write all thids bit to the TLB */
a2_scom_setspr(scom, thread, SPRN_MMUCR3, 0x0000000f);
/* Set MAS1 for 1G page size, and MAS2 to our initial EPN */
a2_scom_setspr(scom, thread, SPRN_MAS1, MAS1_TSIZE(BOOK3E_PAGESZ_1GB));
a2_scom_setspr(scom, thread, SPRN_MAS2, epn);
for (i = 0; i < entries; i++) {
a2_scom_setspr(scom, thread, SPRN_MAS0, MAS0_ESEL(i % assoc));
/* tlbwe */
rc = a2_scom_ram(scom, thread, 0x7c0007a4, 0);
if (rc)
goto scom_fail;
/* Next entry is new address? */
if((i + 1) % assoc == 0) {
epn += (1 << 30);
a2_scom_setspr(scom, thread, SPRN_MAS2, epn);
}
}
/* Setup args for linear mapping */
rc = a2_scom_setgpr(scom, thread, 3, 0, MAS0_TLBSEL(0));
if (rc)
goto scom_fail;
/* Linear mapping */
for (p = a2_tlbinit_code_start; p < a2_tlbinit_after_linear_map; p++) {
rc = a2_scom_ram(scom, thread, *p, 0);
if (rc)
goto scom_fail;
}
/*
* For the boot thread, between the linear mapping and the debug
* mappings there is a loop to flush iprot mappings. Ramming doesn't do
* branches, but the secondary threads don't need to be nearly as smart
* (i.e. we don't need to worry about invalidating the mapping we're
* standing on).
*/
/* Debug mappings. Expects r11 = MAS0 from linear map (set above) */
for (p = a2_tlbinit_after_iprot_flush; p < a2_tlbinit_code_end; p++) {
rc = a2_scom_ram(scom, thread, *p, 0);
if (rc)
goto scom_fail;
}
scom_fail:
if (rc)
pr_err("Setting up initial TLB failed, err %d\n", rc);
if (rc == -SCOM_RAMC_INTERRUPT) {
/* Interrupt, dump some status */
int rc[10];
u64 iar, srr0, srr1, esr, mas0, mas1, mas2, mas7_3, mas8, ccr2;
rc[0] = a2_scom_getspr(scom, thread, SPRN_IAR, &iar);
rc[1] = a2_scom_getspr(scom, thread, SPRN_SRR0, &srr0);
rc[2] = a2_scom_getspr(scom, thread, SPRN_SRR1, &srr1);
rc[3] = a2_scom_getspr(scom, thread, SPRN_ESR, &esr);
rc[4] = a2_scom_getspr(scom, thread, SPRN_MAS0, &mas0);
rc[5] = a2_scom_getspr(scom, thread, SPRN_MAS1, &mas1);
rc[6] = a2_scom_getspr(scom, thread, SPRN_MAS2, &mas2);
rc[7] = a2_scom_getspr(scom, thread, SPRN_MAS7_MAS3, &mas7_3);
rc[8] = a2_scom_getspr(scom, thread, SPRN_MAS8, &mas8);
rc[9] = a2_scom_getspr(scom, thread, SPRN_A2_CCR2, &ccr2);
pr_err(" -> retreived IAR =0x%llx (err %d)\n", iar, rc[0]);
pr_err(" retreived SRR0=0x%llx (err %d)\n", srr0, rc[1]);
pr_err(" retreived SRR1=0x%llx (err %d)\n", srr1, rc[2]);
pr_err(" retreived ESR =0x%llx (err %d)\n", esr, rc[3]);
pr_err(" retreived MAS0=0x%llx (err %d)\n", mas0, rc[4]);
pr_err(" retreived MAS1=0x%llx (err %d)\n", mas1, rc[5]);
pr_err(" retreived MAS2=0x%llx (err %d)\n", mas2, rc[6]);
pr_err(" retreived MS73=0x%llx (err %d)\n", mas7_3, rc[7]);
pr_err(" retreived MAS8=0x%llx (err %d)\n", mas8, rc[8]);
pr_err(" retreived CCR2=0x%llx (err %d)\n", ccr2, rc[9]);
}
return rc;
}
int a2_scom_startup_cpu(unsigned int lcpu, int thr_idx, struct device_node *np)
{
u64 init_iar, init_msr, init_ccr2;
unsigned long start_here;
int rc, core_setup;
scom_map_t scom;
u64 pccr0;
scom = get_scom(lcpu, np, &core_setup);
if (!scom) {
printk(KERN_ERR "Couldn't map SCOM for CPU%d\n", lcpu);
return -1;
}
pr_devel("Bringing up CPU%d using SCOM...\n", lcpu);
if (scom_read(scom, SCOM_PCCR0, &pccr0) != 0) {
printk(KERN_ERR "XSCOM failure readng PCCR0 on CPU%d\n", lcpu);
return -1;
}
scom_write(scom, SCOM_PCCR0, pccr0 | SCOM_PCCR0_ENABLE_DEBUG |
SCOM_PCCR0_ENABLE_RAM);
/* Stop the thead with THRCTL. If we are setting up the TLB we stop all
* threads. We also disable asynchronous interrupts while RAMing.
*/
if (core_setup)
scom_write(scom, SCOM_THRCTL_OR,
SCOM_THRCTL_T0_STOP |
SCOM_THRCTL_T1_STOP |
SCOM_THRCTL_T2_STOP |
SCOM_THRCTL_T3_STOP |
SCOM_THRCTL_ASYNC_DIS);
else
scom_write(scom, SCOM_THRCTL_OR, SCOM_THRCTL_T0_STOP >> thr_idx);
/* Flush its pipeline just in case */
scom_write(scom, SCOM_RAMC, ((u64)thr_idx << 17) |
SCOM_RAMC_FLUSH | SCOM_RAMC_ENABLE);
a2_scom_getspr(scom, thr_idx, SPRN_IAR, &init_iar);
a2_scom_getspr(scom, thr_idx, 0x0ff0, &init_msr);
a2_scom_getspr(scom, thr_idx, SPRN_A2_CCR2, &init_ccr2);
/* Set MSR to MSR_CM (0x0ff0 is magic value for MSR_CM) */
rc = a2_scom_setspr(scom, thr_idx, 0x0ff0, MSR_CM);
if (rc) {
pr_err("Failed to set MSR ! err %d\n", rc);
return rc;
}
/* RAM in an sync/isync for the sake of it */
a2_scom_ram(scom, thr_idx, 0x7c0004ac, 0);
a2_scom_ram(scom, thr_idx, 0x4c00012c, 0);
if (core_setup) {
pr_devel("CPU%d is first thread in core, initializing TLB...\n",
lcpu);
rc = a2_scom_initial_tlb(scom, thr_idx);
if (rc)
goto fail;
}
start_here = ppc_function_entry(core_setup ? generic_secondary_smp_init
: generic_secondary_thread_init);
pr_devel("CPU%d entry point at 0x%lx...\n", lcpu, start_here);
rc |= a2_scom_setspr(scom, thr_idx, SPRN_IAR, start_here);
rc |= a2_scom_setgpr(scom, thr_idx, 3, 0,
get_hard_smp_processor_id(lcpu));
/*
* Tell book3e_secondary_core_init not to set up the TLB, we've
* already done that.
*/
rc |= a2_scom_setgpr(scom, thr_idx, 4, 0, 1);
rc |= a2_scom_setspr(scom, thr_idx, SPRN_TENS, 0x1 << thr_idx);
scom_write(scom, SCOM_RAMC, 0);
scom_write(scom, SCOM_THRCTL_AND, ~(SCOM_THRCTL_T0_STOP >> thr_idx));
scom_write(scom, SCOM_PCCR0, pccr0);
fail:
pr_devel(" SCOM initialization %s\n", rc ? "failed" : "succeeded");
if (rc) {
pr_err("Old IAR=0x%08llx MSR=0x%08llx CCR2=0x%08llx\n",
init_iar, init_msr, init_ccr2);
}
return rc;
}

82
arch/powerpc/platforms/wsp/scom_wsp.c
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@ -1,82 +0,0 @@
/*
* SCOM backend for WSP
*
* Copyright 2010 Benjamin Herrenschmidt, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/cpumask.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/of_address.h>
#include <asm/cputhreads.h>
#include <asm/reg_a2.h>
#include <asm/scom.h>
#include <asm/udbg.h>
#include "wsp.h"
static scom_map_t wsp_scom_map(struct device_node *dev, u64 reg, u64 count)
{
struct resource r;
u64 xscom_addr;
if (!of_get_property(dev, "scom-controller", NULL)) {
pr_err("%s: device %s is not a SCOM controller\n",
__func__, dev->full_name);
return SCOM_MAP_INVALID;
}
if (of_address_to_resource(dev, 0, &r)) {
pr_debug("Failed to find SCOM controller address\n");
return 0;
}
/* Transform the SCOM address into an XSCOM offset */
xscom_addr = ((reg & 0x7f000000) >> 1) | ((reg & 0xfffff) << 3);
return (scom_map_t)ioremap(r.start + xscom_addr, count << 3);
}
static void wsp_scom_unmap(scom_map_t map)
{
iounmap((void *)map);
}
static int wsp_scom_read(scom_map_t map, u64 reg, u64 *value)
{
u64 __iomem *addr = (u64 __iomem *)map;
*value = in_be64(addr + reg);
return 0;
}
static int wsp_scom_write(scom_map_t map, u64 reg, u64 value)
{
u64 __iomem *addr = (u64 __iomem *)map;
out_be64(addr + reg, value);
return 0;
}
static const struct scom_controller wsp_scom_controller = {
.map = wsp_scom_map,
.unmap = wsp_scom_unmap,
.read = wsp_scom_read,
.write = wsp_scom_write
};
void scom_init_wsp(void)
{
scom_init(&wsp_scom_controller);
}

36
arch/powerpc/platforms/wsp/setup.c
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@ -1,36 +0,0 @@
/*
* Copyright 2010 Michael Ellerman, IBM Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/of_platform.h>
#include "wsp.h"
/*
* Find chip-id by walking up device tree looking for ibm,wsp-chip-id property.
* Won't work for nodes that are not a descendant of a wsp node.
*/
int wsp_get_chip_id(struct device_node *dn)
{
const u32 *p;
int rc;
/* Start looking at the specified node, not its parent */
dn = of_node_get(dn);
while (dn && !(p = of_get_property(dn, "ibm,wsp-chip-id", NULL)))
dn = of_get_next_parent(dn);
if (!dn)
return -1;
rc = *p;
of_node_put(dn);
return rc;
}

88
arch/powerpc/platforms/wsp/smp.c
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@ -1,88 +0,0 @@
/*
* SMP Support for A2 platforms
*
* Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <linux/cpumask.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/smp.h>
#include <asm/dbell.h>
#include <asm/machdep.h>
#include <asm/xics.h>
#include "ics.h"
#include "wsp.h"
static void smp_a2_setup_cpu(int cpu)
{
doorbell_setup_this_cpu();
if (cpu != boot_cpuid)
xics_setup_cpu();
}
int smp_a2_kick_cpu(int nr)
{
const char *enable_method;
struct device_node *np;
int thr_idx;
if (nr < 0 || nr >= NR_CPUS)
return -ENOENT;
np = of_get_cpu_node(nr, &thr_idx);
if (!np)
return -ENODEV;
enable_method = of_get_property(np, "enable-method", NULL);
pr_devel("CPU%d has enable-method: \"%s\"\n", nr, enable_method);
if (!enable_method) {
printk(KERN_ERR "CPU%d has no enable-method\n", nr);
return -ENOENT;
} else if (strcmp(enable_method, "ibm,a2-scom") == 0) {
if (a2_scom_startup_cpu(nr, thr_idx, np))
return -1;
} else {
printk(KERN_ERR "CPU%d: Don't understand enable-method \"%s\"\n",
nr, enable_method);
return -EINVAL;
}
/*
* The processor is currently spinning, waiting for the
* cpu_start field to become non-zero After we set cpu_start,
* the processor will continue on to secondary_start
*/
paca[nr].cpu_start = 1;
return 0;
}
static int __init smp_a2_probe(void)
{
return num_possible_cpus();
}
static struct smp_ops_t a2_smp_ops = {
.message_pass = NULL, /* Use smp_muxed_ipi_message_pass */
.cause_ipi = doorbell_cause_ipi,
.probe = smp_a2_probe,
.kick_cpu = smp_a2_kick_cpu,
.setup_cpu = smp_a2_setup_cpu,
};
void __init a2_setup_smp(void)
{
smp_ops = &a2_smp_ops;
}

117
arch/powerpc/platforms/wsp/wsp.c
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@ -1,117 +0,0 @@
/*
* Copyright 2008-2011, IBM Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/smp.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/of_address.h>
#include <asm/scom.h>
#include "wsp.h"
#include "ics.h"
#define WSP_SOC_COMPATIBLE "ibm,wsp-soc"
#define PBIC_COMPATIBLE "ibm,wsp-pbic"
#define COPRO_COMPATIBLE "ibm,wsp-coprocessor"
static int __init wsp_probe_buses(void)
{
static __initdata struct of_device_id bus_ids[] = {
/*
* every node in between needs to be here or you won't
* find it
*/
{ .compatible = WSP_SOC_COMPATIBLE, },
{ .compatible = PBIC_COMPATIBLE, },
{ .compatible = COPRO_COMPATIBLE, },
{},
};
of_platform_bus_probe(NULL, bus_ids, NULL);
return 0;
}
void __init wsp_setup_arch(void)
{
/* init to some ~sane value until calibrate_delay() runs */
loops_per_jiffy = 50000000;
scom_init_wsp();
/* Setup SMP callback */
#ifdef CONFIG_SMP
a2_setup_smp();
#endif
#ifdef CONFIG_PCI
wsp_setup_pci();
#endif
}
void __init wsp_setup_irq(void)
{
wsp_init_irq();
opb_pic_init();
}
int __init wsp_probe_devices(void)
{
struct device_node *np;
/* Our RTC is a ds1500. It seems to be programatically compatible
* with the ds1511 for which we have a driver so let's use that
*/
np = of_find_compatible_node(NULL, NULL, "dallas,ds1500");
if (np != NULL) {
struct resource res;
if (of_address_to_resource(np, 0, &res) == 0)
platform_device_register_simple("ds1511", 0, &res, 1);
}
wsp_probe_buses();
return 0;
}
void wsp_halt(void)
{
u64 val;
scom_map_t m;
struct device_node *dn;
struct device_node *mine;
struct device_node *me;
int rc;
me = of_get_cpu_node(smp_processor_id(), NULL);
mine = scom_find_parent(me);
/* This will halt all the A2s but not power off the chip */
for_each_node_with_property(dn, "scom-controller") {
if (dn == mine)
continue;
m = scom_map(dn, 0, 1);
/* read-modify-write it so the HW probe does not get
* confused */
rc = scom_read(m, 0, &val);
if (rc == 0)
scom_write(m, 0, val | 1);
scom_unmap(m);
}
m = scom_map(mine, 0, 1);
rc = scom_read(m, 0, &val);
if (rc == 0)
scom_write(m, 0, val | 1);
/* should never return */
scom_unmap(m);
}

29
arch/powerpc/platforms/wsp/wsp.h
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@ -1,29 +0,0 @@
#ifndef __WSP_H
#define __WSP_H
#include <asm/wsp.h>
/* Devtree compatible strings for major devices */
#define PCIE_COMPATIBLE "ibm,wsp-pciex"
extern void wsp_setup_arch(void);
extern void wsp_setup_irq(void);
extern int wsp_probe_devices(void);
extern void wsp_halt(void);
extern void wsp_setup_pci(void);
extern void scom_init_wsp(void);
extern void a2_setup_smp(void);
extern int a2_scom_startup_cpu(unsigned int lcpu, int thr_idx,
struct device_node *np);
extern int smp_a2_kick_cpu(int nr);
extern void opb_pic_init(void);
/* chroma specific managment */
extern void wsp_h8_restart(char *cmd);
extern void wsp_h8_power_off(void);
extern void __init wsp_setup_h8(void);
#endif /* __WSP_H */

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arch/powerpc/platforms/wsp/wsp_pci.c
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arch/powerpc/platforms/wsp/wsp_pci.h
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/*
* Copyright 2010 Ben Herrenschmidt, IBM Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __WSP_PCI_H
#define __WSP_PCI_H
/* Architected registers */
#define PCIE_REG_DMA_CHAN_STATUS 0x110
#define PCIE_REG_CPU_LOADSTORE_STATUS 0x120
#define PCIE_REG_CONFIG_DATA 0x130
#define PCIE_REG_LOCK0 0x138
#define PCIE_REG_CONFIG_ADDRESS 0x140
#define PCIE_REG_CA_ENABLE 0x8000000000000000ull
#define PCIE_REG_CA_BUS_MASK 0x0ff0000000000000ull
#define PCIE_REG_CA_BUS_SHIFT (20+32)
#define PCIE_REG_CA_DEV_MASK 0x000f800000000000ull
#define PCIE_REG_CA_DEV_SHIFT (15+32)
#define PCIE_REG_CA_FUNC_MASK 0x0000700000000000ull
#define PCIE_REG_CA_FUNC_SHIFT (12+32)
#define PCIE_REG_CA_REG_MASK 0x00000fff00000000ull
#define PCIE_REG_CA_REG_SHIFT ( 0+32)
#define PCIE_REG_CA_BE_MASK 0x00000000f0000000ull
#define PCIE_REG_CA_BE_SHIFT ( 28)
#define PCIE_REG_LOCK1 0x148
#define PCIE_REG_PHB_CONFIG 0x160
#define PCIE_REG_PHBC_64B_TCE_EN 0x2000000000000000ull
#define PCIE_REG_PHBC_MMIO_DMA_FREEZE_EN 0x1000000000000000ull
#define PCIE_REG_PHBC_32BIT_MSI_EN 0x0080000000000000ull
#define PCIE_REG_PHBC_M64_EN 0x0040000000000000ull
#define PCIE_REG_PHBC_IO_EN 0x0008000000000000ull
#define PCIE_REG_PHBC_64BIT_MSI_EN 0x0002000000000000ull
#define PCIE_REG_PHBC_M32A_EN 0x0000800000000000ull
#define PCIE_REG_PHBC_M32B_EN 0x0000400000000000ull
#define PCIE_REG_PHBC_MSI_PE_VALIDATE 0x0000200000000000ull
#define PCIE_REG_PHBC_DMA_XLATE_BYPASS 0x0000100000000000ull
#define PCIE_REG_IO_BASE_ADDR 0x170
#define PCIE_REG_IO_BASE_MASK 0x178
#define PCIE_REG_IO_START_ADDR 0x180
#define PCIE_REG_M32A_BASE_ADDR 0x190
#define PCIE_REG_M32A_BASE_MASK 0x198
#define PCIE_REG_M32A_START_ADDR 0x1a0
#define PCIE_REG_M32B_BASE_ADDR 0x1b0
#define PCIE_REG_M32B_BASE_MASK 0x1b8
#define PCIE_REG_M32B_START_ADDR 0x1c0
#define PCIE_REG_M64_BASE_ADDR 0x1e0
#define PCIE_REG_M64_BASE_MASK 0x1e8
#define PCIE_REG_M64_START_ADDR 0x1f0
#define PCIE_REG_TCE_KILL 0x210
#define PCIE_REG_TCEKILL_SINGLE 0x8000000000000000ull
#define PCIE_REG_TCEKILL_ADDR_MASK 0x000003fffffffff8ull
#define PCIE_REG_TCEKILL_PS_4K 0
#define PCIE_REG_TCEKILL_PS_64K 1
#define PCIE_REG_TCEKILL_PS_16M 2
#define PCIE_REG_TCEKILL_PS_16G 3
#define PCIE_REG_IODA_ADDR 0x220
#define PCIE_REG_IODA_AD_AUTOINC 0x8000000000000000ull
#define PCIE_REG_IODA_AD_TBL_MVT 0x0005000000000000ull
#define PCIE_REG_IODA_AD_TBL_PELT 0x0006000000000000ull
#define PCIE_REG_IODA_AD_TBL_PESTA 0x0007000000000000ull
#define PCIE_REG_IODA_AD_TBL_PESTB 0x0008000000000000ull
#define PCIE_REG_IODA_AD_TBL_TVT 0x0009000000000000ull
#define PCIE_REG_IODA_AD_TBL_TCE 0x000a000000000000ull
#define PCIE_REG_IODA_DATA0 0x228
#define PCIE_REG_IODA_DATA1 0x230
#define PCIE_REG_LOCK2 0x240
#define PCIE_REG_PHB_GEN_CAP 0x250
#define PCIE_REG_PHB_TCE_CAP 0x258
#define PCIE_REG_PHB_IRQ_CAP 0x260
#define PCIE_REG_PHB_EEH_CAP 0x268
#define PCIE_REG_PAPR_ERR_INJ_CONTROL 0x2b0
#define PCIE_REG_PAPR_ERR_INJ_ADDR 0x2b8
#define PCIE_REG_PAPR_ERR_INJ_MASK 0x2c0
#define PCIE_REG_SYS_CFG1 0x600
#define PCIE_REG_SYS_CFG1_CLASS_CODE 0x0000000000ffffffull
#define IODA_TVT0_TTA_MASK 0x000fffffffff0000ull
#define IODA_TVT0_TTA_SHIFT 4
#define IODA_TVT0_BUSNUM_VALID_MASK 0x000000000000e000ull
#define IODA_TVT0_TCE_TABLE_SIZE_MASK 0x0000000000001f00ull
#define IODA_TVT0_TCE_TABLE_SIZE_SHIFT 8
#define IODA_TVT0_BUSNUM_VALUE_MASK 0x00000000000000ffull
#define IODA_TVT0_BUSNUM_VALID_SHIFT 0
#define IODA_TVT1_DEVNUM_VALID 0x2000000000000000ull
#define IODA_TVT1_DEVNUM_VALUE_MASK 0x1f00000000000000ull
#define IODA_TVT1_DEVNUM_VALUE_SHIFT 56
#define IODA_TVT1_FUNCNUM_VALID 0x0008000000000000ull
#define IODA_TVT1_FUNCNUM_VALUE_MASK 0x0007000000000000ull
#define IODA_TVT1_FUNCNUM_VALUE_SHIFT 48
#define IODA_TVT1_IO_PAGE_SIZE_MASK 0x00001f0000000000ull
#define IODA_TVT1_IO_PAGE_SIZE_SHIFT 40
#define IODA_TVT1_PE_NUMBER_MASK 0x000000000000003full
#define IODA_TVT1_PE_NUMBER_SHIFT 0
#define IODA_TVT_COUNT 64
/* UTL Core registers */
#define PCIE_UTL_SYS_BUS_CONTROL 0x400
#define PCIE_UTL_STATUS 0x408
#define PCIE_UTL_SYS_BUS_AGENT_STATUS 0x410
#define PCIE_UTL_SYS_BUS_AGENT_ERR_SEV 0x418
#define PCIE_UTL_SYS_BUS_AGENT_IRQ_EN 0x420
#define PCIE_UTL_SYS_BUS_BURST_SZ_CONF 0x440
#define PCIE_UTL_REVISION_ID 0x448
#define PCIE_UTL_OUT_POST_HDR_BUF_ALLOC 0x4c0
#define PCIE_UTL_OUT_POST_DAT_BUF_ALLOC 0x4d0
#define PCIE_UTL_IN_POST_HDR_BUF_ALLOC 0x4e0
#define PCIE_UTL_IN_POST_DAT_BUF_ALLOC 0x4f0
#define PCIE_UTL_OUT_NP_BUF_ALLOC 0x500
#define PCIE_UTL_IN_NP_BUF_ALLOC 0x510
#define PCIE_UTL_PCIE_TAGS_ALLOC 0x520
#define PCIE_UTL_GBIF_READ_TAGS_ALLOC 0x530
#define PCIE_UTL_PCIE_PORT_CONTROL 0x540
#define PCIE_UTL_PCIE_PORT_STATUS 0x548
#define PCIE_UTL_PCIE_PORT_ERROR_SEV 0x550
#define PCIE_UTL_PCIE_PORT_IRQ_EN 0x558
#define PCIE_UTL_RC_STATUS 0x560
#define PCIE_UTL_RC_ERR_SEVERITY 0x568
#define PCIE_UTL_RC_IRQ_EN 0x570
#define PCIE_UTL_EP_STATUS 0x578
#define PCIE_UTL_EP_ERR_SEVERITY 0x580
#define PCIE_UTL_EP_ERR_IRQ_EN 0x588
#define PCIE_UTL_PCI_PM_CTRL1 0x590
#define PCIE_UTL_PCI_PM_CTRL2 0x598
/* PCIe stack registers */
#define PCIE_REG_SYSTEM_CONFIG1 0x600
#define PCIE_REG_SYSTEM_CONFIG2 0x608
#define PCIE_REG_EP_SYSTEM_CONFIG 0x618
#define PCIE_REG_EP_FLR 0x620
#define PCIE_REG_EP_BAR_CONFIG 0x628
#define PCIE_REG_LINK_CONFIG 0x630
#define PCIE_REG_PM_CONFIG 0x640
#define PCIE_REG_DLP_CONTROL 0x650
#define PCIE_REG_DLP_STATUS 0x658
#define PCIE_REG_ERR_REPORT_CONTROL 0x660
#define PCIE_REG_SLOT_CONTROL1 0x670
#define PCIE_REG_SLOT_CONTROL2 0x678
#define PCIE_REG_UTL_CONFIG 0x680
#define PCIE_REG_BUFFERS_CONFIG 0x690
#define PCIE_REG_ERROR_INJECT 0x698
#define PCIE_REG_SRIOV_CONFIG 0x6a0
#define PCIE_REG_PF0_SRIOV_STATUS 0x6a8
#define PCIE_REG_PF1_SRIOV_STATUS 0x6b0
#define PCIE_REG_PORT_NUMBER 0x700
#define PCIE_REG_POR_SYSTEM_CONFIG 0x708
/* PHB internal logic registers */
#define PCIE_REG_PHB_VERSION 0x800
#define PCIE_REG_RESET 0x808
#define PCIE_REG_PHB_CONTROL 0x810
#define PCIE_REG_PHB_TIMEOUT_CONTROL1 0x878
#define PCIE_REG_PHB_QUIESCE_DMA 0x888
#define PCIE_REG_PHB_DMA_READ_TAG_ACTV 0x900
#define PCIE_REG_PHB_TCE_READ_TAG_ACTV 0x908
/* FIR registers */
#define PCIE_REG_LEM_FIR_ACCUM 0xc00
#define PCIE_REG_LEM_FIR_AND_MASK 0xc08
#define PCIE_REG_LEM_FIR_OR_MASK 0xc10
#define PCIE_REG_LEM_ACTION0 0xc18
#define PCIE_REG_LEM_ACTION1 0xc20
#define PCIE_REG_LEM_ERROR_MASK 0xc30
#define PCIE_REG_LEM_ERROR_AND_MASK 0xc38
#define PCIE_REG_LEM_ERROR_OR_MASK 0xc40
/* PHB Error registers */
#define PCIE_REG_PHB_ERR_STATUS 0xc80
#define PCIE_REG_PHB_ERR1_STATUS 0xc88
#define PCIE_REG_PHB_ERR_INJECT 0xc90
#define PCIE_REG_PHB_ERR_LEM_ENABLE 0xc98
#define PCIE_REG_PHB_ERR_IRQ_ENABLE 0xca0
#define PCIE_REG_PHB_ERR_FREEZE_ENABLE 0xca8
#define PCIE_REG_PHB_ERR_SIDE_ENABLE 0xcb8
#define PCIE_REG_PHB_ERR_LOG_0 0xcc0
#define PCIE_REG_PHB_ERR_LOG_1 0xcc8
#define PCIE_REG_PHB_ERR_STATUS_MASK 0xcd0
#define PCIE_REG_PHB_ERR1_STATUS_MASK 0xcd8
#define PCIE_REG_MMIO_ERR_STATUS 0xd00
#define PCIE_REG_MMIO_ERR1_STATUS 0xd08
#define PCIE_REG_MMIO_ERR_INJECT 0xd10
#define PCIE_REG_MMIO_ERR_LEM_ENABLE 0xd18
#define PCIE_REG_MMIO_ERR_IRQ_ENABLE 0xd20
#define PCIE_REG_MMIO_ERR_FREEZE_ENABLE 0xd28
#define PCIE_REG_MMIO_ERR_SIDE_ENABLE 0xd38
#define PCIE_REG_MMIO_ERR_LOG_0 0xd40
#define PCIE_REG_MMIO_ERR_LOG_1 0xd48
#define PCIE_REG_MMIO_ERR_STATUS_MASK 0xd50
#define PCIE_REG_MMIO_ERR1_STATUS_MASK 0xd58
#define PCIE_REG_DMA_ERR_STATUS 0xd80
#define PCIE_REG_DMA_ERR1_STATUS 0xd88
#define PCIE_REG_DMA_ERR_INJECT 0xd90
#define PCIE_REG_DMA_ERR_LEM_ENABLE 0xd98
#define PCIE_REG_DMA_ERR_IRQ_ENABLE 0xda0
#define PCIE_REG_DMA_ERR_FREEZE_ENABLE 0xda8
#define PCIE_REG_DMA_ERR_SIDE_ENABLE 0xdb8
#define PCIE_REG_DMA_ERR_LOG_0 0xdc0
#define PCIE_REG_DMA_ERR_LOG_1 0xdc8
#define PCIE_REG_DMA_ERR_STATUS_MASK 0xdd0
#define PCIE_REG_DMA_ERR1_STATUS_MASK 0xdd8
/* Shortcuts for access to the above using the PHB definitions
* with an offset
*/
#define PCIE_REG_ERR_PHB_OFFSET 0x0
#define PCIE_REG_ERR_MMIO_OFFSET 0x80
#define PCIE_REG_ERR_DMA_OFFSET 0x100
/* Debug and Trace registers */
#define PCIE_REG_PHB_DEBUG_CONTROL0 0xe00
#define PCIE_REG_PHB_DEBUG_STATUS0 0xe08
#define PCIE_REG_PHB_DEBUG_CONTROL1 0xe10
#define PCIE_REG_PHB_DEBUG_STATUS1 0xe18
#define PCIE_REG_PHB_DEBUG_CONTROL2 0xe20
#define PCIE_REG_PHB_DEBUG_STATUS2 0xe28
#define PCIE_REG_PHB_DEBUG_CONTROL3 0xe30
#define PCIE_REG_PHB_DEBUG_STATUS3 0xe38
#define PCIE_REG_PHB_DEBUG_CONTROL4 0xe40
#define PCIE_REG_PHB_DEBUG_STATUS4 0xe48
#define PCIE_REG_PHB_DEBUG_CONTROL5 0xe50
#define PCIE_REG_PHB_DEBUG_STATUS5 0xe58
#define PCIE_REG_PHB_DEBUG_CONTROL6 0xe60
#define PCIE_REG_PHB_DEBUG_STATUS6 0xe68
/* Definition for PCIe errors */
struct wsp_pcie_err_log_data {
__u64 phb_err;
__u64 phb_err1;
__u64 phb_log0;
__u64 phb_log1;
__u64 mmio_err;
__u64 mmio_err1;
__u64 mmio_log0;
__u64 mmio_log1;
__u64 dma_err;
__u64 dma_err1;
__u64 dma_log0;
__u64 dma_log1;
__u64 utl_sys_err;
__u64 utl_port_err;
__u64 utl_rc_err;
__u64 unused;
};
#endif /* __WSP_PCI_H */