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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-30 10:22:57 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-30 10:22:57 -0800 |
commit | 6e4c61968beb641e8372733e4a0c0cdee720e675 (patch) | |
tree | 848d6a4433def2c1ecf307f19534cab63589e9bf | |
parent | 67e0c1b037f8739a023c0129c1e0946defbaefb5 (diff) | |
parent | f991db1cf1bdca43675b5d2df0af991719727029 (diff) | |
download | lwn-6e4c61968beb641e8372733e4a0c0cdee720e675.tar.gz lwn-6e4c61968beb641e8372733e4a0c0cdee720e675.zip |
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Ben Herrenschmidt:
"A bit more endian problems found during testing of 3.13 and a few
other simple fixes and regressions fixes"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Fix alignment of secondary cpu spin vars
powerpc: Align p_end
powernv/eeh: Add buffer for P7IOC hub error data
powernv/eeh: Fix possible buffer overrun in ioda_eeh_phb_diag()
powerpc: Make 64-bit non-VMX __copy_tofrom_user bi-endian
powerpc: Make unaligned accesses endian-safe for powerpc
powerpc: Fix bad stack check in exception entry
powerpc/512x: dts: disable MPC5125 usb module
powerpc/512x: dts: remove misplaced IRQ spec from 'soc' node (5125)
-rw-r--r-- | arch/powerpc/boot/dts/mpc5125twr.dts | 6 | ||||
-rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 2 | ||||
-rw-r--r-- | arch/powerpc/include/asm/unaligned.h | 7 | ||||
-rw-r--r-- | arch/powerpc/kernel/head_64.S | 2 | ||||
-rw-r--r-- | arch/powerpc/lib/copyuser_64.S | 53 | ||||
-rw-r--r-- | arch/powerpc/platforms/powernv/eeh-ioda.c | 20 | ||||
-rw-r--r-- | arch/powerpc/platforms/powernv/pci.h | 4 |
7 files changed, 60 insertions, 34 deletions
diff --git a/arch/powerpc/boot/dts/mpc5125twr.dts b/arch/powerpc/boot/dts/mpc5125twr.dts index 4177b62240c2..a618dfc13e4c 100644 --- a/arch/powerpc/boot/dts/mpc5125twr.dts +++ b/arch/powerpc/boot/dts/mpc5125twr.dts @@ -58,7 +58,6 @@ compatible = "fsl,mpc5121-immr"; #address-cells = <1>; #size-cells = <1>; - #interrupt-cells = <2>; ranges = <0x0 0x80000000 0x400000>; reg = <0x80000000 0x400000>; bus-frequency = <66000000>; // 66 MHz ips bus @@ -189,6 +188,10 @@ reg = <0xA000 0x1000>; }; + // disable USB1 port + // TODO: + // correct pinmux config and fix USB3320 ulpi dependency + // before re-enabling it usb@3000 { compatible = "fsl,mpc5121-usb2-dr"; reg = <0x3000 0x400>; @@ -197,6 +200,7 @@ interrupts = <43 0x8>; dr_mode = "host"; phy_type = "ulpi"; + status = "disabled"; }; // 5125 PSCs are not 52xx or 5121 PSC compatible diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 894662a5d4d5..243ce69ad685 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -284,7 +284,7 @@ do_kvm_##n: \ subi r1,r1,INT_FRAME_SIZE; /* alloc frame on kernel stack */ \ beq- 1f; \ ld r1,PACAKSAVE(r13); /* kernel stack to use */ \ -1: cmpdi cr1,r1,0; /* check if r1 is in userspace */ \ +1: cmpdi cr1,r1,-INT_FRAME_SIZE; /* check if r1 is in userspace */ \ blt+ cr1,3f; /* abort if it is */ \ li r1,(n); /* will be reloaded later */ \ sth r1,PACA_TRAP_SAVE(r13); \ diff --git a/arch/powerpc/include/asm/unaligned.h b/arch/powerpc/include/asm/unaligned.h index 5f1b1e3c2137..8296381ae432 100644 --- a/arch/powerpc/include/asm/unaligned.h +++ b/arch/powerpc/include/asm/unaligned.h @@ -4,13 +4,18 @@ #ifdef __KERNEL__ /* - * The PowerPC can do unaligned accesses itself in big endian mode. + * The PowerPC can do unaligned accesses itself based on its endian mode. */ #include <linux/unaligned/access_ok.h> #include <linux/unaligned/generic.h> +#ifdef __LITTLE_ENDIAN__ +#define get_unaligned __get_unaligned_le +#define put_unaligned __put_unaligned_le +#else #define get_unaligned __get_unaligned_be #define put_unaligned __put_unaligned_be +#endif #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_UNALIGNED_H */ diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 2ae41aba4053..4f0946de2d5c 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -80,6 +80,7 @@ END_FTR_SECTION(0, 1) * of the function that the cpu should jump to to continue * initialization. */ + .balign 8 .globl __secondary_hold_spinloop __secondary_hold_spinloop: .llong 0x0 @@ -470,6 +471,7 @@ _STATIC(__after_prom_start) mtctr r8 bctr +.balign 8 p_end: .llong _end - _stext 4: /* Now copy the rest of the kernel up to _end */ diff --git a/arch/powerpc/lib/copyuser_64.S b/arch/powerpc/lib/copyuser_64.S index d73a59014900..596a285c0755 100644 --- a/arch/powerpc/lib/copyuser_64.S +++ b/arch/powerpc/lib/copyuser_64.S @@ -9,6 +9,14 @@ #include <asm/processor.h> #include <asm/ppc_asm.h> +#ifdef __BIG_ENDIAN__ +#define sLd sld /* Shift towards low-numbered address. */ +#define sHd srd /* Shift towards high-numbered address. */ +#else +#define sLd srd /* Shift towards low-numbered address. */ +#define sHd sld /* Shift towards high-numbered address. */ +#endif + .align 7 _GLOBAL(__copy_tofrom_user) BEGIN_FTR_SECTION @@ -118,10 +126,10 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) 24: ld r9,0(r4) /* 3+2n loads, 2+2n stores */ 25: ld r0,8(r4) - sld r6,r9,r10 + sLd r6,r9,r10 26: ldu r9,16(r4) - srd r7,r0,r11 - sld r8,r0,r10 + sHd r7,r0,r11 + sLd r8,r0,r10 or r7,r7,r6 blt cr6,79f 27: ld r0,8(r4) @@ -129,35 +137,35 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) 28: ld r0,0(r4) /* 4+2n loads, 3+2n stores */ 29: ldu r9,8(r4) - sld r8,r0,r10 + sLd r8,r0,r10 addi r3,r3,-8 blt cr6,5f 30: ld r0,8(r4) - srd r12,r9,r11 - sld r6,r9,r10 + sHd r12,r9,r11 + sLd r6,r9,r10 31: ldu r9,16(r4) or r12,r8,r12 - srd r7,r0,r11 - sld r8,r0,r10 + sHd r7,r0,r11 + sLd r8,r0,r10 addi r3,r3,16 beq cr6,78f 1: or r7,r7,r6 32: ld r0,8(r4) 76: std r12,8(r3) -2: srd r12,r9,r11 - sld r6,r9,r10 +2: sHd r12,r9,r11 + sLd r6,r9,r10 33: ldu r9,16(r4) or r12,r8,r12 77: stdu r7,16(r3) - srd r7,r0,r11 - sld r8,r0,r10 + sHd r7,r0,r11 + sLd r8,r0,r10 bdnz 1b 78: std r12,8(r3) or r7,r7,r6 79: std r7,16(r3) -5: srd r12,r9,r11 +5: sHd r12,r9,r11 or r12,r8,r12 80: std r12,24(r3) bne 6f @@ -165,23 +173,38 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) blr 6: cmpwi cr1,r5,8 addi r3,r3,32 - sld r9,r9,r10 + sLd r9,r9,r10 ble cr1,7f 34: ld r0,8(r4) - srd r7,r0,r11 + sHd r7,r0,r11 or r9,r7,r9 7: bf cr7*4+1,1f +#ifdef __BIG_ENDIAN__ rotldi r9,r9,32 +#endif 94: stw r9,0(r3) +#ifdef __LITTLE_ENDIAN__ + rotrdi r9,r9,32 +#endif addi r3,r3,4 1: bf cr7*4+2,2f +#ifdef __BIG_ENDIAN__ rotldi r9,r9,16 +#endif 95: sth r9,0(r3) +#ifdef __LITTLE_ENDIAN__ + rotrdi r9,r9,16 +#endif addi r3,r3,2 2: bf cr7*4+3,3f +#ifdef __BIG_ENDIAN__ rotldi r9,r9,8 +#endif 96: stb r9,0(r3) +#ifdef __LITTLE_ENDIAN__ + rotrdi r9,r9,8 +#endif 3: li r3,0 blr diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c index 02245cee7818..d7ddcee7feb8 100644 --- a/arch/powerpc/platforms/powernv/eeh-ioda.c +++ b/arch/powerpc/platforms/powernv/eeh-ioda.c @@ -36,7 +36,6 @@ #include "powernv.h" #include "pci.h" -static char *hub_diag = NULL; static int ioda_eeh_nb_init = 0; static int ioda_eeh_event(struct notifier_block *nb, @@ -140,15 +139,6 @@ static int ioda_eeh_post_init(struct pci_controller *hose) ioda_eeh_nb_init = 1; } - /* We needn't HUB diag-data on PHB3 */ - if (phb->type == PNV_PHB_IODA1 && !hub_diag) { - hub_diag = (char *)__get_free_page(GFP_KERNEL | __GFP_ZERO); - if (!hub_diag) { - pr_err("%s: Out of memory !\n", __func__); - return -ENOMEM; - } - } - #ifdef CONFIG_DEBUG_FS if (phb->dbgfs) { debugfs_create_file("err_injct_outbound", 0600, @@ -633,11 +623,10 @@ static void ioda_eeh_hub_diag_common(struct OpalIoP7IOCErrorData *data) static void ioda_eeh_hub_diag(struct pci_controller *hose) { struct pnv_phb *phb = hose->private_data; - struct OpalIoP7IOCErrorData *data; + struct OpalIoP7IOCErrorData *data = &phb->diag.hub_diag; long rc; - data = (struct OpalIoP7IOCErrorData *)ioda_eeh_hub_diag; - rc = opal_pci_get_hub_diag_data(phb->hub_id, data, PAGE_SIZE); + rc = opal_pci_get_hub_diag_data(phb->hub_id, data, sizeof(*data)); if (rc != OPAL_SUCCESS) { pr_warning("%s: Failed to get HUB#%llx diag-data (%ld)\n", __func__, phb->hub_id, rc); @@ -820,14 +809,15 @@ static void ioda_eeh_phb_diag(struct pci_controller *hose) struct OpalIoPhbErrorCommon *common; long rc; - common = (struct OpalIoPhbErrorCommon *)phb->diag.blob; - rc = opal_pci_get_phb_diag_data2(phb->opal_id, common, PAGE_SIZE); + rc = opal_pci_get_phb_diag_data2(phb->opal_id, phb->diag.blob, + PNV_PCI_DIAG_BUF_SIZE); if (rc != OPAL_SUCCESS) { pr_warning("%s: Failed to get diag-data for PHB#%x (%ld)\n", __func__, hose->global_number, rc); return; } + common = (struct OpalIoPhbErrorCommon *)phb->diag.blob; switch (common->ioType) { case OPAL_PHB_ERROR_DATA_TYPE_P7IOC: ioda_eeh_p7ioc_phb_diag(hose, common); diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index 911c24ef033e..1ed8d5f40f5a 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -172,11 +172,13 @@ struct pnv_phb { } ioda; }; - /* PHB status structure */ + /* PHB and hub status structure */ union { unsigned char blob[PNV_PCI_DIAG_BUF_SIZE]; struct OpalIoP7IOCPhbErrorData p7ioc; + struct OpalIoP7IOCErrorData hub_diag; } diag; + }; extern struct pci_ops pnv_pci_ops; |