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-rw-r--r--MAINTAINERS1
-rw-r--r--arch/sparc/configs/sparc64_defconfig1
-rw-r--r--arch/sparc/include/asm/hugetlb.h7
-rw-r--r--arch/sparc/include/asm/hypervisor.h18
-rw-r--r--arch/sparc/include/asm/page_64.h3
-rw-r--r--arch/sparc/include/asm/pgtable_64.h20
-rw-r--r--arch/sparc/include/asm/smp_64.h5
-rw-r--r--arch/sparc/include/asm/trap_block.h2
-rw-r--r--arch/sparc/include/asm/tsb.h36
-rw-r--r--arch/sparc/include/asm/vio.h9
-rw-r--r--arch/sparc/kernel/etrap_64.S26
-rw-r--r--arch/sparc/kernel/head_64.S18
-rw-r--r--arch/sparc/kernel/hvapi.c2
-rw-r--r--arch/sparc/kernel/hvcalls.S11
-rw-r--r--arch/sparc/kernel/ldc.c2
-rw-r--r--arch/sparc/kernel/leon_pci_grpci1.c2
-rw-r--r--arch/sparc/kernel/leon_pci_grpci2.c2
-rw-r--r--arch/sparc/kernel/process_64.c7
-rw-r--r--arch/sparc/kernel/rtrap_64.S13
-rw-r--r--arch/sparc/kernel/setup_64.c6
-rw-r--r--arch/sparc/kernel/smp_64.c80
-rw-r--r--arch/sparc/kernel/traps_64.c51
-rw-r--r--arch/sparc/kernel/tsb.S2
-rw-r--r--arch/sparc/kernel/vio.c1
-rw-r--r--arch/sparc/kernel/viohs.c12
-rw-r--r--arch/sparc/kernel/vmlinux.lds.S10
-rw-r--r--arch/sparc/lib/M7copy_from_user.S40
-rw-r--r--arch/sparc/lib/M7copy_to_user.S51
-rw-r--r--arch/sparc/lib/M7memcpy.S923
-rw-r--r--arch/sparc/lib/M7memset.S352
-rw-r--r--arch/sparc/lib/M7patch.S51
-rw-r--r--arch/sparc/lib/Makefile5
-rw-r--r--arch/sparc/lib/Memcpy_utils.S345
-rw-r--r--arch/sparc/lib/NG4memcpy.S277
-rw-r--r--arch/sparc/lib/U3memcpy.S32
-rw-r--r--arch/sparc/mm/gup.c45
-rw-r--r--arch/sparc/mm/hugetlbpage.c102
-rw-r--r--arch/sparc/mm/init_64.c54
-rw-r--r--drivers/tty/Kconfig5
-rw-r--r--drivers/tty/Makefile1
-rw-r--r--drivers/tty/vcc.c1155
41 files changed, 3488 insertions, 297 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index a3231bd6541d..ea81de896d27 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12489,6 +12489,7 @@ F: drivers/tty/serial/sunsab.h
F: drivers/tty/serial/sunsu.c
F: drivers/tty/serial/sunzilog.c
F: drivers/tty/serial/sunzilog.h
+F: drivers/tty/vcc.c
SPARSE CHECKER
M: "Christopher Li" <sparse@chrisli.org>
diff --git a/arch/sparc/configs/sparc64_defconfig b/arch/sparc/configs/sparc64_defconfig
index ca8609d7292f..4d4e1cc6402f 100644
--- a/arch/sparc/configs/sparc64_defconfig
+++ b/arch/sparc/configs/sparc64_defconfig
@@ -238,3 +238,4 @@ CONFIG_CRYPTO_TWOFISH=m
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRC16=m
CONFIG_LIBCRC32C=m
+CONFIG_VCC=m
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index d1f837dc77a4..0ca7caab1b06 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -4,6 +4,13 @@
#include <asm/page.h>
#include <asm-generic/hugetlb.h>
+#ifdef CONFIG_HUGETLB_PAGE
+struct pud_huge_patch_entry {
+ unsigned int addr;
+ unsigned int insn;
+};
+extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
+#endif
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte);
diff --git a/arch/sparc/include/asm/hypervisor.h b/arch/sparc/include/asm/hypervisor.h
index 73cb8978df58..3dc9215d0357 100644
--- a/arch/sparc/include/asm/hypervisor.h
+++ b/arch/sparc/include/asm/hypervisor.h
@@ -298,6 +298,24 @@ unsigned long sun4v_cpu_stop(unsigned long cpuid);
unsigned long sun4v_cpu_yield(void);
#endif
+/* cpu_poke()
+ * TRAP: HV_FAST_TRAP
+ * FUNCTION: HV_FAST_CPU_POKE
+ * RET0: status
+ * ERRORS: ENOCPU cpuid refers to a CPU that does not exist
+ * EINVAL cpuid is current CPU
+ *
+ * Poke CPU cpuid. If the target CPU is currently suspended having
+ * invoked the cpu-yield service, that vCPU will be resumed.
+ * Poke interrupts may only be sent to valid, non-local CPUs.
+ * It is not legal to poke the current vCPU.
+ */
+#define HV_FAST_CPU_POKE 0x13
+
+#ifndef __ASSEMBLY__
+unsigned long sun4v_cpu_poke(unsigned long cpuid);
+#endif
+
/* cpu_qconf()
* TRAP: HV_FAST_TRAP
* FUNCTION: HV_FAST_CPU_QCONF
diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h
index 5961b2d8398a..8ee1f97589a1 100644
--- a/arch/sparc/include/asm/page_64.h
+++ b/arch/sparc/include/asm/page_64.h
@@ -17,6 +17,7 @@
#define HPAGE_SHIFT 23
#define REAL_HPAGE_SHIFT 22
+#define HPAGE_16GB_SHIFT 34
#define HPAGE_2GB_SHIFT 31
#define HPAGE_256MB_SHIFT 28
#define HPAGE_64K_SHIFT 16
@@ -28,7 +29,7 @@
#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
#define REAL_HPAGE_PER_HPAGE (_AC(1,UL) << (HPAGE_SHIFT - REAL_HPAGE_SHIFT))
-#define HUGE_MAX_HSTATE 4
+#define HUGE_MAX_HSTATE 5
#endif
#ifndef __ASSEMBLY__
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 6fbd931f0570..4fefe3762083 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -414,6 +414,11 @@ static inline bool is_hugetlb_pmd(pmd_t pmd)
return !!(pmd_val(pmd) & _PAGE_PMD_HUGE);
}
+static inline bool is_hugetlb_pud(pud_t pud)
+{
+ return !!(pud_val(pud) & _PAGE_PUD_HUGE);
+}
+
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline pmd_t pmd_mkhuge(pmd_t pmd)
{
@@ -687,6 +692,8 @@ static inline unsigned long pmd_write(pmd_t pmd)
return pte_write(pte);
}
+#define pud_write(pud) pte_write(__pte(pud_val(pud)))
+
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline unsigned long pmd_dirty(pmd_t pmd)
{
@@ -823,9 +830,18 @@ static inline unsigned long __pmd_page(pmd_t pmd)
return ((unsigned long) __va(pfn << PAGE_SHIFT));
}
+
+static inline unsigned long pud_page_vaddr(pud_t pud)
+{
+ pte_t pte = __pte(pud_val(pud));
+ unsigned long pfn;
+
+ pfn = pte_pfn(pte);
+
+ return ((unsigned long) __va(pfn << PAGE_SHIFT));
+}
+
#define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd))
-#define pud_page_vaddr(pud) \
- ((unsigned long) __va(pud_val(pud)))
#define pud_page(pud) virt_to_page((void *)pud_page_vaddr(pud))
#define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL)
#define pud_present(pud) (pud_val(pud) != 0U)
diff --git a/arch/sparc/include/asm/smp_64.h b/arch/sparc/include/asm/smp_64.h
index ce2233f7e662..a75089285db8 100644
--- a/arch/sparc/include/asm/smp_64.h
+++ b/arch/sparc/include/asm/smp_64.h
@@ -33,6 +33,9 @@
DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
extern cpumask_t cpu_core_map[NR_CPUS];
+void smp_init_cpu_poke(void);
+void scheduler_poke(void);
+
void arch_send_call_function_single_ipi(int cpu);
void arch_send_call_function_ipi_mask(const struct cpumask *mask);
@@ -74,6 +77,8 @@ void __cpu_die(unsigned int cpu);
#define smp_fetch_global_regs() do { } while (0)
#define smp_fetch_global_pmu() do { } while (0)
#define smp_fill_in_cpu_possible_map() do { } while (0)
+#define smp_init_cpu_poke() do { } while (0)
+#define scheduler_poke() do { } while (0)
#endif /* !(CONFIG_SMP) */
diff --git a/arch/sparc/include/asm/trap_block.h b/arch/sparc/include/asm/trap_block.h
index ff05992dae7a..dfc538609eb2 100644
--- a/arch/sparc/include/asm/trap_block.h
+++ b/arch/sparc/include/asm/trap_block.h
@@ -73,6 +73,8 @@ struct sun4v_1insn_patch_entry {
};
extern struct sun4v_1insn_patch_entry __sun4v_1insn_patch,
__sun4v_1insn_patch_end;
+extern struct sun4v_1insn_patch_entry __fast_win_ctrl_1insn_patch,
+ __fast_win_ctrl_1insn_patch_end;
struct sun4v_2insn_patch_entry {
unsigned int addr;
diff --git a/arch/sparc/include/asm/tsb.h b/arch/sparc/include/asm/tsb.h
index 32258e08da03..acf55063aa3d 100644
--- a/arch/sparc/include/asm/tsb.h
+++ b/arch/sparc/include/asm/tsb.h
@@ -195,6 +195,41 @@ extern struct tsb_phys_patch_entry __tsb_phys_patch, __tsb_phys_patch_end;
nop; \
699:
+ /* PUD has been loaded into REG1, interpret the value, seeing
+ * if it is a HUGE PUD or a normal one. If it is not valid
+ * then jump to FAIL_LABEL. If it is a HUGE PUD, and it
+ * translates to a valid PTE, branch to PTE_LABEL.
+ *
+ * We have to propagate bits [32:22] from the virtual address
+ * to resolve at 4M granularity.
+ */
+#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
+#define USER_PGTABLE_CHECK_PUD_HUGE(VADDR, REG1, REG2, FAIL_LABEL, PTE_LABEL) \
+700: ba 700f; \
+ nop; \
+ .section .pud_huge_patch, "ax"; \
+ .word 700b; \
+ nop; \
+ .previous; \
+ brz,pn REG1, FAIL_LABEL; \
+ sethi %uhi(_PAGE_PUD_HUGE), REG2; \
+ sllx REG2, 32, REG2; \
+ andcc REG1, REG2, %g0; \
+ be,pt %xcc, 700f; \
+ sethi %hi(0x1ffc0000), REG2; \
+ sllx REG2, 1, REG2; \
+ brgez,pn REG1, FAIL_LABEL; \
+ andn REG1, REG2, REG1; \
+ and VADDR, REG2, REG2; \
+ brlz,pt REG1, PTE_LABEL; \
+ or REG1, REG2, REG1; \
+700:
+#else
+#define USER_PGTABLE_CHECK_PUD_HUGE(VADDR, REG1, REG2, FAIL_LABEL, PTE_LABEL) \
+ brz,pn REG1, FAIL_LABEL; \
+ nop;
+#endif
+
/* PMD has been loaded into REG1, interpret the value, seeing
* if it is a HUGE PMD or a normal one. If it is not valid
* then jump to FAIL_LABEL. If it is a HUGE PMD, and it
@@ -242,6 +277,7 @@ extern struct tsb_phys_patch_entry __tsb_phys_patch, __tsb_phys_patch_end;
srlx REG2, 64 - PAGE_SHIFT, REG2; \
andn REG2, 0x7, REG2; \
ldxa [REG1 + REG2] ASI_PHYS_USE_EC, REG1; \
+ USER_PGTABLE_CHECK_PUD_HUGE(VADDR, REG1, REG2, FAIL_LABEL, 800f) \
brz,pn REG1, FAIL_LABEL; \
sllx VADDR, 64 - (PMD_SHIFT + PMD_BITS), REG2; \
srlx REG2, 64 - PAGE_SHIFT, REG2; \
diff --git a/arch/sparc/include/asm/vio.h b/arch/sparc/include/asm/vio.h
index d1c47e9f0090..f3d4ac232690 100644
--- a/arch/sparc/include/asm/vio.h
+++ b/arch/sparc/include/asm/vio.h
@@ -52,6 +52,7 @@ struct vio_ver_info {
#define VDEV_NETWORK_SWITCH 0x02
#define VDEV_DISK 0x03
#define VDEV_DISK_SERVER 0x04
+#define VDEV_CONSOLE_CON 0x05
u8 resv1[3];
u64 resv2[5];
@@ -282,6 +283,14 @@ struct vio_dring_state {
struct ldc_trans_cookie cookies[VIO_MAX_RING_COOKIES];
};
+#define VIO_TAG_SIZE ((int)sizeof(struct vio_msg_tag))
+#define VIO_VCC_MTU_SIZE (LDC_PACKET_SIZE - VIO_TAG_SIZE)
+
+struct vio_vcc {
+ struct vio_msg_tag tag;
+ char data[VIO_VCC_MTU_SIZE];
+};
+
static inline void *vio_dring_cur(struct vio_dring_state *dr)
{
return dr->base + (dr->entry_size * dr->prod);
diff --git a/arch/sparc/kernel/etrap_64.S b/arch/sparc/kernel/etrap_64.S
index 1276ca2567ba..5c237467d156 100644
--- a/arch/sparc/kernel/etrap_64.S
+++ b/arch/sparc/kernel/etrap_64.S
@@ -38,7 +38,11 @@ etrap_syscall: TRAP_LOAD_THREAD_REG(%g6, %g1)
or %g1, %g3, %g1
bne,pn %xcc, 1f
sub %sp, STACKFRAME_SZ+TRACEREG_SZ-STACK_BIAS, %g2
- wrpr %g0, 7, %cleanwin
+661: wrpr %g0, 7, %cleanwin
+ .section .fast_win_ctrl_1insn_patch, "ax"
+ .word 661b
+ .word 0x85880000 ! allclean
+ .previous
sethi %hi(TASK_REGOFF), %g2
sethi %hi(TSTATE_PEF), %g3
@@ -88,16 +92,30 @@ etrap_save: save %g2, -STACK_BIAS, %sp
bne,pn %xcc, 3f
mov PRIMARY_CONTEXT, %l4
- rdpr %canrestore, %g3
+661: rdpr %canrestore, %g3
+ .section .fast_win_ctrl_1insn_patch, "ax"
+ .word 661b
+ nop
+ .previous
+
rdpr %wstate, %g2
- wrpr %g0, 0, %canrestore
+661: wrpr %g0, 0, %canrestore
+ .section .fast_win_ctrl_1insn_patch, "ax"
+ .word 661b
+ nop
+ .previous
sll %g2, 3, %g2
/* Set TI_SYS_FPDEPTH to 1 and clear TI_SYS_NOERROR. */
mov 1, %l5
sth %l5, [%l6 + TI_SYS_NOERROR]
- wrpr %g3, 0, %otherwin
+661: wrpr %g3, 0, %otherwin
+ .section .fast_win_ctrl_1insn_patch, "ax"
+ .word 661b
+ .word 0x87880000 ! otherw
+ .previous
+
wrpr %g2, 0, %wstate
sethi %hi(sparc64_kern_pri_context), %g2
ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3
diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S
index 78e0211753d2..4de9fbd1a177 100644
--- a/arch/sparc/kernel/head_64.S
+++ b/arch/sparc/kernel/head_64.S
@@ -603,10 +603,10 @@ niagara_tlb_fixup:
be,pt %xcc, niagara4_patch
nop
cmp %g1, SUN4V_CHIP_SPARC_M7
- be,pt %xcc, niagara4_patch
+ be,pt %xcc, sparc_m7_patch
nop
cmp %g1, SUN4V_CHIP_SPARC_M8
- be,pt %xcc, niagara4_patch
+ be,pt %xcc, sparc_m7_patch
nop
cmp %g1, SUN4V_CHIP_SPARC_SN
be,pt %xcc, niagara4_patch
@@ -621,6 +621,18 @@ niagara_tlb_fixup:
ba,a,pt %xcc, 80f
nop
+
+sparc_m7_patch:
+ call m7_patch_copyops
+ nop
+ call m7_patch_bzero
+ nop
+ call m7_patch_pageops
+ nop
+
+ ba,a,pt %xcc, 80f
+ nop
+
niagara4_patch:
call niagara4_patch_copyops
nop
@@ -881,7 +893,6 @@ sparc64_boot_end:
#include "misctrap.S"
#include "syscalls.S"
#include "helpers.S"
-#include "hvcalls.S"
#include "sun4v_tlb_miss.S"
#include "sun4v_ivec.S"
#include "ktlb.S"
@@ -926,6 +937,7 @@ swapper_4m_tsb:
! 0x0000000000428000
+#include "hvcalls.S"
#include "systbls_64.S"
.data
diff --git a/arch/sparc/kernel/hvapi.c b/arch/sparc/kernel/hvapi.c
index 267731234ce8..d41ce33d87d6 100644
--- a/arch/sparc/kernel/hvapi.c
+++ b/arch/sparc/kernel/hvapi.c
@@ -189,7 +189,7 @@ void __init sun4v_hvapi_init(void)
group = HV_GRP_CORE;
major = 1;
- minor = 1;
+ minor = 6;
if (sun4v_hvapi_register(group, major, &minor))
goto bad;
diff --git a/arch/sparc/kernel/hvcalls.S b/arch/sparc/kernel/hvcalls.S
index 4116ee5c7791..e57007ff7f8f 100644
--- a/arch/sparc/kernel/hvcalls.S
+++ b/arch/sparc/kernel/hvcalls.S
@@ -106,6 +106,17 @@ ENTRY(sun4v_cpu_yield)
nop
ENDPROC(sun4v_cpu_yield)
+ /* %o0: cpuid
+ *
+ * returns %o0: status
+ */
+ENTRY(sun4v_cpu_poke)
+ mov HV_FAST_CPU_POKE, %o5
+ ta HV_FAST_TRAP
+ retl
+ nop
+ENDPROC(sun4v_cpu_poke)
+
/* %o0: type
* %o1: queue paddr
* %o2: num queue entries
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index 840e0b21bfe3..acffbc894ab0 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1480,6 +1480,7 @@ int ldc_rx_reset(struct ldc_channel *lp)
{
return __set_rx_head(lp, lp->rx_tail);
}
+EXPORT_SYMBOL(ldc_rx_reset);
void __ldc_print(struct ldc_channel *lp, const char *caller)
{
@@ -1493,6 +1494,7 @@ void __ldc_print(struct ldc_channel *lp, const char *caller)
lp->tx_head, lp->tx_tail, lp->tx_num_entries,
lp->rcv_nxt, lp->snd_nxt);
}
+EXPORT_SYMBOL(__ldc_print);
static int write_raw(struct ldc_channel *lp, const void *buf, unsigned int size)
{
diff --git a/arch/sparc/kernel/leon_pci_grpci1.c b/arch/sparc/kernel/leon_pci_grpci1.c
index 1e77128a8f88..83ba5005d44c 100644
--- a/arch/sparc/kernel/leon_pci_grpci1.c
+++ b/arch/sparc/kernel/leon_pci_grpci1.c
@@ -695,7 +695,7 @@ err1:
return err;
}
-static struct of_device_id grpci1_of_match[] = {
+static const struct of_device_id grpci1_of_match[] __initconst = {
{
.name = "GAISLER_PCIFBRG",
},
diff --git a/arch/sparc/kernel/leon_pci_grpci2.c b/arch/sparc/kernel/leon_pci_grpci2.c
index f727c4de1316..ff0e5c90310f 100644
--- a/arch/sparc/kernel/leon_pci_grpci2.c
+++ b/arch/sparc/kernel/leon_pci_grpci2.c
@@ -886,7 +886,7 @@ err1:
return err;
}
-static struct of_device_id grpci2_of_match[] = {
+static const struct of_device_id grpci2_of_match[] __initconst = {
{
.name = "GAISLER_GRPCI2",
},
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index b96104da5bd6..44e5da405f96 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -77,8 +77,13 @@ void arch_cpu_idle(void)
: "=&r" (pstate)
: "i" (PSTATE_IE));
- if (!need_resched() && !cpu_is_offline(smp_processor_id()))
+ if (!need_resched() && !cpu_is_offline(smp_processor_id())) {
sun4v_cpu_yield();
+ /* If resumed by cpu_poke then we need to explicitly
+ * call scheduler_ipi().
+ */
+ scheduler_poke();
+ }
/* Re-enable interrupts. */
__asm__ __volatile__(
diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
index 709a82ebd294..dff86fad0a1f 100644
--- a/arch/sparc/kernel/rtrap_64.S
+++ b/arch/sparc/kernel/rtrap_64.S
@@ -224,10 +224,19 @@ rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
rdpr %otherwin, %l2
srl %l1, 3, %l1
- wrpr %l2, %g0, %canrestore
+661: wrpr %l2, %g0, %canrestore
+ .section .fast_win_ctrl_1insn_patch, "ax"
+ .word 661b
+ .word 0x89880000 ! normalw
+ .previous
+
wrpr %l1, %g0, %wstate
brnz,pt %l2, user_rtt_restore
- wrpr %g0, %g0, %otherwin
+661: wrpr %g0, %g0, %otherwin
+ .section .fast_win_ctrl_1insn_patch, "ax"
+ .word 661b
+ nop
+ .previous
ldx [%g6 + TI_FLAGS], %g3
wr %g0, ASI_AIUP, %asi
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index 150ee7d4b059..db4c4d7e28a0 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -300,6 +300,11 @@ static void __init sun4v_patch(void)
break;
}
+ if (sun4v_chip_type != SUN4V_CHIP_NIAGARA1) {
+ sun4v_patch_1insn_range(&__fast_win_ctrl_1insn_patch,
+ &__fast_win_ctrl_1insn_patch_end);
+ }
+
sun4v_hvapi_init();
}
@@ -363,6 +368,7 @@ void __init start_early_boot(void)
check_if_starfire();
per_cpu_patch();
sun4v_patch();
+ smp_init_cpu_poke();
cpu = hard_smp_processor_id();
if (cpu >= NR_CPUS) {
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 3218bc43302e..4898329970c5 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -74,6 +74,9 @@ EXPORT_SYMBOL(cpu_core_sib_cache_map);
static cpumask_t smp_commenced_mask;
+static DEFINE_PER_CPU(bool, poke);
+static bool cpu_poke;
+
void smp_info(struct seq_file *m)
{
int i;
@@ -1439,15 +1442,86 @@ void __init smp_cpus_done(unsigned int max_cpus)
{
}
+static void send_cpu_ipi(int cpu)
+{
+ xcall_deliver((u64) &xcall_receive_signal,
+ 0, 0, cpumask_of(cpu));
+}
+
+void scheduler_poke(void)
+{
+ if (!cpu_poke)
+ return;
+
+ if (!__this_cpu_read(poke))
+ return;
+
+ __this_cpu_write(poke, false);
+ set_softint(1 << PIL_SMP_RECEIVE_SIGNAL);
+}
+
+static unsigned long send_cpu_poke(int cpu)
+{
+ unsigned long hv_err;
+
+ per_cpu(poke, cpu) = true;
+ hv_err = sun4v_cpu_poke(cpu);
+ if (hv_err != HV_EOK) {
+ per_cpu(poke, cpu) = false;
+ pr_err_ratelimited("%s: sun4v_cpu_poke() fails err=%lu\n",
+ __func__, hv_err);
+ }
+
+ return hv_err;
+}
+
void smp_send_reschedule(int cpu)
{
if (cpu == smp_processor_id()) {
WARN_ON_ONCE(preemptible());
set_softint(1 << PIL_SMP_RECEIVE_SIGNAL);
- } else {
- xcall_deliver((u64) &xcall_receive_signal,
- 0, 0, cpumask_of(cpu));
+ return;
+ }
+
+ /* Use cpu poke to resume idle cpu if supported. */
+ if (cpu_poke && idle_cpu(cpu)) {
+ unsigned long ret;
+
+ ret = send_cpu_poke(cpu);
+ if (ret == HV_EOK)
+ return;
}
+
+ /* Use IPI in following cases:
+ * - cpu poke not supported
+ * - cpu not idle
+ * - send_cpu_poke() returns with error
+ */
+ send_cpu_ipi(cpu);
+}
+
+void smp_init_cpu_poke(void)
+{
+ unsigned long major;
+ unsigned long minor;
+ int ret;
+
+ if (tlb_type != hypervisor)
+ return;
+
+ ret = sun4v_hvapi_get(HV_GRP_CORE, &major, &minor);
+ if (ret) {
+ pr_debug("HV_GRP_CORE is not registered\n");
+ return;
+ }
+
+ if (major == 1 && minor >= 6) {
+ /* CPU POKE is registered. */
+ cpu_poke = true;
+ return;
+ }
+
+ pr_debug("CPU_POKE not supported\n");
}
void __irq_entry smp_receive_signal_client(int irq, struct pt_regs *regs)
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index ad31af1dd726..c74f2dffcc13 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -265,6 +265,45 @@ void sun4v_insn_access_exception_tl1(struct pt_regs *regs, unsigned long addr, u
sun4v_insn_access_exception(regs, addr, type_ctx);
}
+bool is_no_fault_exception(struct pt_regs *regs)
+{
+ unsigned char asi;
+ u32 insn;
+
+ if (get_user(insn, (u32 __user *)regs->tpc) == -EFAULT)
+ return false;
+
+ /*
+ * Must do a little instruction decoding here in order to
+ * decide on a course of action. The bits of interest are:
+ * insn[31:30] = op, where 3 indicates the load/store group
+ * insn[24:19] = op3, which identifies individual opcodes
+ * insn[13] indicates an immediate offset
+ * op3[4]=1 identifies alternate space instructions
+ * op3[5:4]=3 identifies floating point instructions
+ * op3[2]=1 identifies stores
+ * See "Opcode Maps" in the appendix of any Sparc V9
+ * architecture spec for full details.
+ */
+ if ((insn & 0xc0800000) == 0xc0800000) { /* op=3, op3[4]=1 */
+ if (insn & 0x2000) /* immediate offset */
+ asi = (regs->tstate >> 24); /* saved %asi */
+ else
+ asi = (insn >> 5); /* immediate asi */
+ if ((asi & 0xf2) == ASI_PNF) {
+ if (insn & 0x1000000) { /* op3[5:4]=3 */
+ handle_ldf_stq(insn, regs);
+ return true;
+ } else if (insn & 0x200000) { /* op3[2], stores */
+ return false;
+ }
+ handle_ld_nf(insn, regs);
+ return true;
+ }
+ }
+ return false;
+}
+
void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
{
enum ctx_state prev_state = exception_enter();
@@ -296,6 +335,9 @@ void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, un
die_if_kernel("Dax", regs);
}
+ if (is_no_fault_exception(regs))
+ return;
+
info.si_signo = SIGSEGV;
info.si_errno = 0;
info.si_code = SEGV_MAPERR;
@@ -352,6 +394,9 @@ void sun4v_data_access_exception(struct pt_regs *regs, unsigned long addr, unsig
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
+ if (is_no_fault_exception(regs))
+ return;
+
info.si_signo = SIGSEGV;
info.si_errno = 0;
info.si_code = SEGV_MAPERR;
@@ -2575,6 +2620,9 @@ void mem_address_unaligned(struct pt_regs *regs, unsigned long sfar, unsigned lo
kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc));
goto out;
}
+ if (is_no_fault_exception(regs))
+ return;
+
info.si_signo = SIGBUS;
info.si_errno = 0;
info.si_code = BUS_ADRALN;
@@ -2597,6 +2645,9 @@ void sun4v_do_mna(struct pt_regs *regs, unsigned long addr, unsigned long type_c
kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc));
return;
}
+ if (is_no_fault_exception(regs))
+ return;
+
info.si_signo = SIGBUS;
info.si_errno = 0;
info.si_code = BUS_ADRALN;
diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S
index db872dbfafe9..f74115364b1e 100644
--- a/arch/sparc/kernel/tsb.S
+++ b/arch/sparc/kernel/tsb.S
@@ -117,7 +117,7 @@ tsb_miss_page_table_walk_sun4v_fastpath:
/* Valid PTE is now in %g5. */
#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
- sethi %uhi(_PAGE_PMD_HUGE), %g7
+ sethi %uhi(_PAGE_PMD_HUGE | _PAGE_PUD_HUGE), %g7
sllx %g7, 32, %g7
andcc %g5, %g7, %g0
diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
index 1c8763c9c52b..da1ac3f22b24 100644
--- a/arch/sparc/kernel/vio.c
+++ b/arch/sparc/kernel/vio.c
@@ -246,6 +246,7 @@ u64 vio_vdev_node(struct mdesc_handle *hp, struct vio_dev *vdev)
return node;
}
+EXPORT_SYMBOL(vio_vdev_node);
static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp,
struct vio_dev *vdev)
diff --git a/arch/sparc/kernel/viohs.c b/arch/sparc/kernel/viohs.c
index d4f13c037a40..dcd278f29573 100644
--- a/arch/sparc/kernel/viohs.c
+++ b/arch/sparc/kernel/viohs.c
@@ -814,15 +814,21 @@ int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
case VDEV_NETWORK_SWITCH:
case VDEV_DISK:
case VDEV_DISK_SERVER:
+ case VDEV_CONSOLE_CON:
break;
default:
return -EINVAL;
}
- if (!ops || !ops->send_attr || !ops->handle_attr ||
- !ops->handshake_complete)
- return -EINVAL;
+ if (dev_class == VDEV_NETWORK ||
+ dev_class == VDEV_NETWORK_SWITCH ||
+ dev_class == VDEV_DISK ||
+ dev_class == VDEV_DISK_SERVER) {
+ if (!ops || !ops->send_attr || !ops->handle_attr ||
+ !ops->handshake_complete)
+ return -EINVAL;
+ }
if (!ver_table || ver_table_size < 0)
return -EINVAL;
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 03b3d65d1266..d78847d56a4b 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -154,6 +154,16 @@ SECTIONS
*(.get_tick_patch)
__get_tick_patch_end = .;
}
+ .pud_huge_patch : {
+ __pud_huge_patch = .;
+ *(.pud_huge_patch)
+ __pud_huge_patch_end = .;
+ }
+ .fast_win_ctrl_1insn_patch : {
+ __fast_win_ctrl_1insn_patch = .;
+ *(.fast_win_ctrl_1insn_patch)
+ __fast_win_ctrl_1insn_patch_end = .;
+ }
PERCPU_SECTION(SMP_CACHE_BYTES)
#ifdef CONFIG_JUMP_LABEL
diff --git a/arch/sparc/lib/M7copy_from_user.S b/arch/sparc/lib/M7copy_from_user.S
new file mode 100644
index 000000000000..66464b3e3649
--- /dev/null
+++ b/arch/sparc/lib/M7copy_from_user.S
@@ -0,0 +1,40 @@
+/*
+ * M7copy_from_user.S: SPARC M7 optimized copy from userspace.
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ */
+
+
+#define EX_LD(x, y) \
+98: x; \
+ .section __ex_table,"a"; \
+ .align 4; \
+ .word 98b, y; \
+ .text; \
+ .align 4;
+
+#define EX_LD_FP(x, y) \
+98: x; \
+ .section __ex_table,"a"; \
+ .align 4; \
+ .word 98b, y##_fp; \
+ .text; \
+ .align 4;
+
+#ifndef ASI_AIUS
+#define ASI_AIUS 0x11
+#endif
+
+#define FUNC_NAME M7copy_from_user
+#define LOAD(type,addr,dest) type##a [addr] %asi, dest
+#define EX_RETVAL(x) 0
+
+#ifdef __KERNEL__
+#define PREAMBLE \
+ rd %asi, %g1; \
+ cmp %g1, ASI_AIUS; \
+ bne,pn %icc, raw_copy_in_user; \
+ nop
+#endif
+
+#include "M7memcpy.S"
diff --git a/arch/sparc/lib/M7copy_to_user.S b/arch/sparc/lib/M7copy_to_user.S
new file mode 100644
index 000000000000..a60ac467f808
--- /dev/null
+++ b/arch/sparc/lib/M7copy_to_user.S
@@ -0,0 +1,51 @@
+/*
+ * M7copy_to_user.S: SPARC M7 optimized copy to userspace.
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ */
+
+
+#define EX_ST(x, y) \
+98: x; \
+ .section __ex_table,"a"; \
+ .align 4; \
+ .word 98b, y; \
+ .text; \
+ .align 4;
+
+#define EX_ST_FP(x, y) \
+98: x; \
+ .section __ex_table,"a"; \
+ .align 4; \
+ .word 98b, y##_fp; \
+ .text; \
+ .align 4;
+
+
+#ifndef ASI_AIUS
+#define ASI_AIUS 0x11
+#endif
+
+#ifndef ASI_BLK_INIT_QUAD_LDD_AIUS
+#define ASI_BLK_INIT_QUAD_LDD_AIUS 0x23
+#endif
+
+#define FUNC_NAME M7copy_to_user
+#define STORE(type,src,addr) type##a src, [addr] %asi
+#define STORE_ASI ASI_BLK_INIT_QUAD_LDD_AIUS
+#define STORE_MRU_ASI ASI_ST_BLKINIT_MRU_S
+#define EX_RETVAL(x) 0
+
+#ifdef __KERNEL__
+ /* Writing to %asi is _expensive_ so we hardcode it.
+ * Reading %asi to check for KERNEL_DS is comparatively
+ * cheap.
+ */
+#define PREAMBLE \
+ rd %asi, %g1; \
+ cmp %g1, ASI_AIUS; \
+ bne,pn %icc, raw_copy_in_user; \
+ nop
+#endif
+
+#include "M7memcpy.S"
diff --git a/arch/sparc/lib/M7memcpy.S b/arch/sparc/lib/M7memcpy.S
new file mode 100644
index 000000000000..cbd42ea7c3f7
--- /dev/null
+++ b/arch/sparc/lib/M7memcpy.S
@@ -0,0 +1,923 @@
+/*
+ * M7memcpy: Optimized SPARC M7 memcpy
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ */
+
+ .file "M7memcpy.S"
+
+/*
+ * memcpy(s1, s2, len)
+ *
+ * Copy s2 to s1, always copy n bytes.
+ * Note: this C code does not work for overlapped copies.
+ *
+ * Fast assembler language version of the following C-program for memcpy
+ * which represents the `standard' for the C-library.
+ *
+ * void *
+ * memcpy(void *s, const void *s0, size_t n)
+ * {
+ * if (n != 0) {
+ * char *s1 = s;
+ * const char *s2 = s0;
+ * do {
+ * *s1++ = *s2++;
+ * } while (--n != 0);
+ * }
+ * return (s);
+ * }
+ *
+ *
+ * SPARC T7/M7 Flow :
+ *
+ * if (count < SMALL_MAX) {
+ * if count < SHORTCOPY (SHORTCOPY=3)
+ * copy bytes; exit with dst addr
+ * if src & dst aligned on word boundary but not long word boundary,
+ * copy with ldw/stw; branch to finish_up
+ * if src & dst aligned on long word boundary
+ * copy with ldx/stx; branch to finish_up
+ * if src & dst not aligned and length <= SHORTCHECK (SHORTCHECK=14)
+ * copy bytes; exit with dst addr
+ * move enough bytes to get src to word boundary
+ * if dst now on word boundary
+ * move_words:
+ * copy words; branch to finish_up
+ * if dst now on half word boundary
+ * load words, shift half words, store words; branch to finish_up
+ * if dst on byte 1
+ * load words, shift 3 bytes, store words; branch to finish_up
+ * if dst on byte 3
+ * load words, shift 1 byte, store words; branch to finish_up
+ * finish_up:
+ * copy bytes; exit with dst addr
+ * } else { More than SMALL_MAX bytes
+ * move bytes until dst is on long word boundary
+ * if( src is on long word boundary ) {
+ * if (count < MED_MAX) {
+ * finish_long: src/dst aligned on 8 bytes
+ * copy with ldx/stx in 8-way unrolled loop;
+ * copy final 0-63 bytes; exit with dst addr
+ * } else { src/dst aligned; count > MED_MAX
+ * align dst on 64 byte boundary; for main data movement:
+ * prefetch src data to L2 cache; let HW prefetch move data to L1 cache
+ * Use BIS (block initializing store) to avoid copying store cache
+ * lines from memory. But pre-store first element of each cache line
+ * ST_CHUNK lines in advance of the rest of that cache line. That
+ * gives time for replacement cache lines to be written back without
+ * excess STQ and Miss Buffer filling. Repeat until near the end,
+ * then finish up storing before going to finish_long.
+ * }
+ * } else { src/dst not aligned on 8 bytes
+ * if src is word aligned and count < MED_WMAX
+ * move words in 8-way unrolled loop
+ * move final 0-31 bytes; exit with dst addr
+ * if count < MED_UMAX
+ * use alignaddr/faligndata combined with ldd/std in 8-way
+ * unrolled loop to move data.
+ * go to unalign_done
+ * else
+ * setup alignaddr for faligndata instructions
+ * align dst on 64 byte boundary; prefetch src data to L1 cache
+ * loadx8, falign, block-store, prefetch loop
+ * (only use block-init-store when src/dst on 8 byte boundaries.)
+ * unalign_done:
+ * move remaining bytes for unaligned cases. exit with dst addr.
+ * }
+ *
+ */
+
+#include <asm/visasm.h>
+#include <asm/asi.h>
+
+#if !defined(EX_LD) && !defined(EX_ST)
+#define NON_USER_COPY
+#endif
+
+#ifndef EX_LD
+#define EX_LD(x,y) x
+#endif
+#ifndef EX_LD_FP
+#define EX_LD_FP(x,y) x
+#endif
+
+#ifndef EX_ST
+#define EX_ST(x,y) x
+#endif
+#ifndef EX_ST_FP
+#define EX_ST_FP(x,y) x
+#endif
+
+#ifndef EX_RETVAL
+#define EX_RETVAL(x) x
+#endif
+
+#ifndef LOAD
+#define LOAD(type,addr,dest) type [addr], dest
+#endif
+
+#ifndef STORE
+#define STORE(type,src,addr) type src, [addr]
+#endif
+
+/*
+ * ASI_BLK_INIT_QUAD_LDD_P/ASI_BLK_INIT_QUAD_LDD_S marks the cache
+ * line as "least recently used" which means if many threads are
+ * active, it has a high probability of being pushed out of the cache
+ * between the first initializing store and the final stores.
+ * Thus, we use ASI_ST_BLKINIT_MRU_P/ASI_ST_BLKINIT_MRU_S which
+ * marks the cache line as "most recently used" for all
+ * but the last cache line
+ */
+#ifndef STORE_ASI
+#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
+#define STORE_ASI ASI_BLK_INIT_QUAD_LDD_P
+#else
+#define STORE_ASI 0x80 /* ASI_P */
+#endif
+#endif
+
+#ifndef STORE_MRU_ASI
+#ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA
+#define STORE_MRU_ASI ASI_ST_BLKINIT_MRU_P
+#else
+#define STORE_MRU_ASI 0x80 /* ASI_P */
+#endif
+#endif
+
+#ifndef STORE_INIT
+#define STORE_INIT(src,addr) stxa src, [addr] STORE_ASI
+#endif
+
+#ifndef STORE_INIT_MRU
+#define STORE_INIT_MRU(src,addr) stxa src, [addr] STORE_MRU_ASI
+#endif
+
+#ifndef FUNC_NAME
+#define FUNC_NAME M7memcpy
+#endif
+
+#ifndef PREAMBLE
+#define PREAMBLE
+#endif
+
+#define BLOCK_SIZE 64
+#define SHORTCOPY 3
+#define SHORTCHECK 14
+#define SHORT_LONG 64 /* max copy for short longword-aligned case */
+ /* must be at least 64 */
+#define SMALL_MAX 128
+#define MED_UMAX 1024 /* max copy for medium un-aligned case */
+#define MED_WMAX 1024 /* max copy for medium word-aligned case */
+#define MED_MAX 1024 /* max copy for medium longword-aligned case */
+#define ST_CHUNK 24 /* ST_CHUNK - block of values for BIS Store */
+#define ALIGN_PRE 24 /* distance for aligned prefetch loop */
+
+ .register %g2,#scratch
+
+ .section ".text"
+ .global FUNC_NAME
+ .type FUNC_NAME, #function
+ .align 16
+FUNC_NAME:
+ srlx %o2, 31, %g2
+ cmp %g2, 0
+ tne %xcc, 5
+ PREAMBLE
+ mov %o0, %g1 ! save %o0
+ brz,pn %o2, .Lsmallx
+ cmp %o2, 3
+ ble,pn %icc, .Ltiny_cp
+ cmp %o2, 19
+ ble,pn %icc, .Lsmall_cp
+ or %o0, %o1, %g2
+ cmp %o2, SMALL_MAX
+ bl,pn %icc, .Lmedium_cp
+ nop
+
+.Lmedium:
+ neg %o0, %o5
+ andcc %o5, 7, %o5 ! bytes till DST 8 byte aligned
+ brz,pt %o5, .Ldst_aligned_on_8
+
+ ! %o5 has the bytes to be written in partial store.
+ sub %o2, %o5, %o2
+ sub %o1, %o0, %o1 ! %o1 gets the difference
+7: ! dst aligning loop
+ add %o1, %o0, %o4
+ EX_LD(LOAD(ldub, %o4, %o4), memcpy_retl_o2_plus_o5) ! load one byte
+ subcc %o5, 1, %o5
+ EX_ST(STORE(stb, %o4, %o0), memcpy_retl_o2_plus_o5_plus_1)
+ bgu,pt %xcc, 7b
+ add %o0, 1, %o0 ! advance dst
+ add %o1, %o0, %o1 ! restore %o1
+.Ldst_aligned_on_8:
+ andcc %o1, 7, %o5
+ brnz,pt %o5, .Lsrc_dst_unaligned_on_8
+ nop
+
+.Lsrc_dst_aligned_on_8:
+ ! check if we are copying MED_MAX or more bytes
+ set MED_MAX, %o3
+ cmp %o2, %o3 ! limit to store buffer size
+ bgu,pn %xcc, .Llarge_align8_copy
+ nop
+
+/*
+ * Special case for handling when src and dest are both long word aligned
+ * and total data to move is less than MED_MAX bytes
+ */
+.Lmedlong:
+ subcc %o2, 63, %o2 ! adjust length to allow cc test
+ ble,pn %xcc, .Lmedl63 ! skip big loop if less than 64 bytes
+ nop
+.Lmedl64:
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_63) ! load
+ subcc %o2, 64, %o2 ! decrement length count
+ EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_63_64) ! and store
+ EX_LD(LOAD(ldx, %o1+8, %o3), memcpy_retl_o2_plus_63_56) ! a block of 64
+ EX_ST(STORE(stx, %o3, %o0+8), memcpy_retl_o2_plus_63_56)
+ EX_LD(LOAD(ldx, %o1+16, %o4), memcpy_retl_o2_plus_63_48)
+ EX_ST(STORE(stx, %o4, %o0+16), memcpy_retl_o2_plus_63_48)
+ EX_LD(LOAD(ldx, %o1+24, %o3), memcpy_retl_o2_plus_63_40)
+ EX_ST(STORE(stx, %o3, %o0+24), memcpy_retl_o2_plus_63_40)
+ EX_LD(LOAD(ldx, %o1+32, %o4), memcpy_retl_o2_plus_63_32)! load and store
+ EX_ST(STORE(stx, %o4, %o0+32), memcpy_retl_o2_plus_63_32)
+ EX_LD(LOAD(ldx, %o1+40, %o3), memcpy_retl_o2_plus_63_24)! a block of 64
+ add %o1, 64, %o1 ! increase src ptr by 64
+ EX_ST(STORE(stx, %o3, %o0+40), memcpy_retl_o2_plus_63_24)
+ EX_LD(LOAD(ldx, %o1-16, %o4), memcpy_retl_o2_plus_63_16)
+ add %o0, 64, %o0 ! increase dst ptr by 64
+ EX_ST(STORE(stx, %o4, %o0-16), memcpy_retl_o2_plus_63_16)
+ EX_LD(LOAD(ldx, %o1-8, %o3), memcpy_retl_o2_plus_63_8)
+ bgu,pt %xcc, .Lmedl64 ! repeat if at least 64 bytes left
+ EX_ST(STORE(stx, %o3, %o0-8), memcpy_retl_o2_plus_63_8)
+.Lmedl63:
+ addcc %o2, 32, %o2 ! adjust remaining count
+ ble,pt %xcc, .Lmedl31 ! to skip if 31 or fewer bytes left
+ nop
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_31) ! load
+ sub %o2, 32, %o2 ! decrement length count
+ EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_31_32) ! and store
+ EX_LD(LOAD(ldx, %o1+8, %o3), memcpy_retl_o2_plus_31_24) ! a block of 32
+ add %o1, 32, %o1 ! increase src ptr by 32
+ EX_ST(STORE(stx, %o3, %o0+8), memcpy_retl_o2_plus_31_24)
+ EX_LD(LOAD(ldx, %o1-16, %o4), memcpy_retl_o2_plus_31_16)
+ add %o0, 32, %o0 ! increase dst ptr by 32
+ EX_ST(STORE(stx, %o4, %o0-16), memcpy_retl_o2_plus_31_16)
+ EX_LD(LOAD(ldx, %o1-8, %o3), memcpy_retl_o2_plus_31_8)
+ EX_ST(STORE(stx, %o3, %o0-8), memcpy_retl_o2_plus_31_8)
+.Lmedl31:
+ addcc %o2, 16, %o2 ! adjust remaining count
+ ble,pt %xcc, .Lmedl15 ! skip if 15 or fewer bytes left
+ nop !
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_15)
+ add %o1, 16, %o1 ! increase src ptr by 16
+ EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_15)
+ sub %o2, 16, %o2 ! decrease count by 16
+ EX_LD(LOAD(ldx, %o1-8, %o3), memcpy_retl_o2_plus_15_8)
+ add %o0, 16, %o0 ! increase dst ptr by 16
+ EX_ST(STORE(stx, %o3, %o0-8), memcpy_retl_o2_plus_15_8)
+.Lmedl15:
+ addcc %o2, 15, %o2 ! restore count
+ bz,pt %xcc, .Lsmallx ! exit if finished
+ cmp %o2, 8
+ blt,pt %xcc, .Lmedw7 ! skip if 7 or fewer bytes left
+ tst %o2
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2) ! load 8 bytes
+ add %o1, 8, %o1 ! increase src ptr by 8
+ add %o0, 8, %o0 ! increase dst ptr by 8
+ subcc %o2, 8, %o2 ! decrease count by 8
+ bnz,pn %xcc, .Lmedw7
+ EX_ST(STORE(stx, %o4, %o0-8), memcpy_retl_o2_plus_8) ! and store 8
+ retl
+ mov EX_RETVAL(%g1), %o0 ! restore %o0
+
+ .align 16
+.Lsrc_dst_unaligned_on_8:
+ ! DST is 8-byte aligned, src is not
+2:
+ andcc %o1, 0x3, %o5 ! test word alignment
+ bnz,pt %xcc, .Lunalignsetup ! branch to skip if not word aligned
+ nop
+
+/*
+ * Handle all cases where src and dest are aligned on word
+ * boundaries. Use unrolled loops for better performance.
+ * This option wins over standard large data move when
+ * source and destination is in cache for.Lmedium
+ * to short data moves.
+ */
+ set MED_WMAX, %o3
+ cmp %o2, %o3 ! limit to store buffer size
+ bge,pt %xcc, .Lunalignrejoin ! otherwise rejoin main loop
+ nop
+
+ subcc %o2, 31, %o2 ! adjust length to allow cc test
+ ! for end of loop
+ ble,pt %xcc, .Lmedw31 ! skip big loop if less than 16
+.Lmedw32:
+ EX_LD(LOAD(ld, %o1, %o4), memcpy_retl_o2_plus_31)! move a block of 32
+ sllx %o4, 32, %o5
+ EX_LD(LOAD(ld, %o1+4, %o4), memcpy_retl_o2_plus_31)
+ or %o4, %o5, %o5
+ EX_ST(STORE(stx, %o5, %o0), memcpy_retl_o2_plus_31)
+ subcc %o2, 32, %o2 ! decrement length count
+ EX_LD(LOAD(ld, %o1+8, %o4), memcpy_retl_o2_plus_31_24)
+ sllx %o4, 32, %o5
+ EX_LD(LOAD(ld, %o1+12, %o4), memcpy_retl_o2_plus_31_24)
+ or %o4, %o5, %o5
+ EX_ST(STORE(stx, %o5, %o0+8), memcpy_retl_o2_plus_31_24)
+ add %o1, 32, %o1 ! increase src ptr by 32
+ EX_LD(LOAD(ld, %o1-16, %o4), memcpy_retl_o2_plus_31_16)
+ sllx %o4, 32, %o5
+ EX_LD(LOAD(ld, %o1-12, %o4), memcpy_retl_o2_plus_31_16)
+ or %o4, %o5, %o5
+ EX_ST(STORE(stx, %o5, %o0+16), memcpy_retl_o2_plus_31_16)
+ add %o0, 32, %o0 ! increase dst ptr by 32
+ EX_LD(LOAD(ld, %o1-8, %o4), memcpy_retl_o2_plus_31_8)
+ sllx %o4, 32, %o5
+ EX_LD(LOAD(ld, %o1-4, %o4), memcpy_retl_o2_plus_31_8)
+ or %o4, %o5, %o5
+ bgu,pt %xcc, .Lmedw32 ! repeat if at least 32 bytes left
+ EX_ST(STORE(stx, %o5, %o0-8), memcpy_retl_o2_plus_31_8)
+.Lmedw31:
+ addcc %o2, 31, %o2 ! restore count
+
+ bz,pt %xcc, .Lsmallx ! exit if finished
+ nop
+ cmp %o2, 16
+ blt,pt %xcc, .Lmedw15
+ nop
+ EX_LD(LOAD(ld, %o1, %o4), memcpy_retl_o2)! move a block of 16 bytes
+ sllx %o4, 32, %o5
+ subcc %o2, 16, %o2 ! decrement length count
+ EX_LD(LOAD(ld, %o1+4, %o4), memcpy_retl_o2_plus_16)
+ or %o4, %o5, %o5
+ EX_ST(STORE(stx, %o5, %o0), memcpy_retl_o2_plus_16)
+ add %o1, 16, %o1 ! increase src ptr by 16
+ EX_LD(LOAD(ld, %o1-8, %o4), memcpy_retl_o2_plus_8)
+ add %o0, 16, %o0 ! increase dst ptr by 16
+ sllx %o4, 32, %o5
+ EX_LD(LOAD(ld, %o1-4, %o4), memcpy_retl_o2_plus_8)
+ or %o4, %o5, %o5
+ EX_ST(STORE(stx, %o5, %o0-8), memcpy_retl_o2_plus_8)
+.Lmedw15:
+ bz,pt %xcc, .Lsmallx ! exit if finished
+ cmp %o2, 8
+ blt,pn %xcc, .Lmedw7 ! skip if 7 or fewer bytes left
+ tst %o2
+ EX_LD(LOAD(ld, %o1, %o4), memcpy_retl_o2) ! load 4 bytes
+ subcc %o2, 8, %o2 ! decrease count by 8
+ EX_ST(STORE(stw, %o4, %o0), memcpy_retl_o2_plus_8)! and store 4 bytes
+ add %o1, 8, %o1 ! increase src ptr by 8
+ EX_LD(LOAD(ld, %o1-4, %o3), memcpy_retl_o2_plus_4) ! load 4 bytes
+ add %o0, 8, %o0 ! increase dst ptr by 8
+ EX_ST(STORE(stw, %o3, %o0-4), memcpy_retl_o2_plus_4)! and store 4 bytes
+ bz,pt %xcc, .Lsmallx ! exit if finished
+.Lmedw7: ! count is ge 1, less than 8
+ cmp %o2, 4 ! check for 4 bytes left
+ blt,pn %xcc, .Lsmallleft3 ! skip if 3 or fewer bytes left
+ nop !
+ EX_LD(LOAD(ld, %o1, %o4), memcpy_retl_o2) ! load 4 bytes
+ add %o1, 4, %o1 ! increase src ptr by 4
+ add %o0, 4, %o0 ! increase dst ptr by 4
+ subcc %o2, 4, %o2 ! decrease count by 4
+ bnz .Lsmallleft3
+ EX_ST(STORE(stw, %o4, %o0-4), memcpy_retl_o2_plus_4)! and store 4 bytes
+ retl
+ mov EX_RETVAL(%g1), %o0
+
+ .align 16
+.Llarge_align8_copy: ! Src and dst share 8 byte alignment
+ ! align dst to 64 byte boundary
+ andcc %o0, 0x3f, %o3 ! %o3 == 0 means dst is 64 byte aligned
+ brz,pn %o3, .Laligned_to_64
+ andcc %o0, 8, %o3 ! odd long words to move?
+ brz,pt %o3, .Laligned_to_16
+ nop
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2)
+ sub %o2, 8, %o2
+ add %o1, 8, %o1 ! increment src ptr
+ add %o0, 8, %o0 ! increment dst ptr
+ EX_ST(STORE(stx, %o4, %o0-8), memcpy_retl_o2_plus_8)
+.Laligned_to_16:
+ andcc %o0, 16, %o3 ! pair of long words to move?
+ brz,pt %o3, .Laligned_to_32
+ nop
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2)
+ sub %o2, 16, %o2
+ EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_16)
+ add %o1, 16, %o1 ! increment src ptr
+ EX_LD(LOAD(ldx, %o1-8, %o4), memcpy_retl_o2_plus_8)
+ add %o0, 16, %o0 ! increment dst ptr
+ EX_ST(STORE(stx, %o4, %o0-8), memcpy_retl_o2_plus_8)
+.Laligned_to_32:
+ andcc %o0, 32, %o3 ! four long words to move?
+ brz,pt %o3, .Laligned_to_64
+ nop
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2)
+ sub %o2, 32, %o2
+ EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_32)
+ EX_LD(LOAD(ldx, %o1+8, %o4), memcpy_retl_o2_plus_24)
+ EX_ST(STORE(stx, %o4, %o0+8), memcpy_retl_o2_plus_24)
+ EX_LD(LOAD(ldx, %o1+16, %o4), memcpy_retl_o2_plus_16)
+ EX_ST(STORE(stx, %o4, %o0+16), memcpy_retl_o2_plus_16)
+ add %o1, 32, %o1 ! increment src ptr
+ EX_LD(LOAD(ldx, %o1-8, %o4), memcpy_retl_o2_plus_8)
+ add %o0, 32, %o0 ! increment dst ptr
+ EX_ST(STORE(stx, %o4, %o0-8), memcpy_retl_o2_plus_8)
+.Laligned_to_64:
+!
+! Using block init store (BIS) instructions to avoid fetching cache
+! lines from memory. Use ST_CHUNK stores to first element of each cache
+! line (similar to prefetching) to avoid overfilling STQ or miss buffers.
+! Gives existing cache lines time to be moved out of L1/L2/L3 cache.
+! Initial stores using MRU version of BIS to keep cache line in
+! cache until we are ready to store final element of cache line.
+! Then store last element using the LRU version of BIS.
+!
+ andn %o2, 0x3f, %o5 ! %o5 is multiple of block size
+ and %o2, 0x3f, %o2 ! residue bytes in %o2
+!
+! We use STORE_MRU_ASI for the first seven stores to each cache line
+! followed by STORE_ASI (mark as LRU) for the last store. That
+! mixed approach reduces the probability that the cache line is removed
+! before we finish setting it, while minimizing the effects on
+! other cached values during a large memcpy
+!
+! ST_CHUNK batches up initial BIS operations for several cache lines
+! to allow multiple requests to not be blocked by overflowing the
+! the store miss buffer. Then the matching stores for all those
+! BIS operations are executed.
+!
+
+ sub %o0, 8, %o0 ! adjust %o0 for ASI alignment
+.Lalign_loop:
+ cmp %o5, ST_CHUNK*64
+ blu,pt %xcc, .Lalign_loop_fin
+ mov ST_CHUNK,%o3
+.Lalign_loop_start:
+ prefetch [%o1 + (ALIGN_PRE * BLOCK_SIZE)], 21
+ subcc %o3, 1, %o3
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_o5)
+ add %o1, 64, %o1
+ add %o0, 8, %o0
+ EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+ bgu %xcc,.Lalign_loop_start
+ add %o0, 56, %o0
+
+ mov ST_CHUNK,%o3
+ sllx %o3, 6, %o4 ! ST_CHUNK*64
+ sub %o1, %o4, %o1 ! reset %o1
+ sub %o0, %o4, %o0 ! reset %o0
+
+.Lalign_loop_rest:
+ EX_LD(LOAD(ldx, %o1+8, %o4), memcpy_retl_o2_plus_o5)
+ add %o0, 16, %o0
+ EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1+16, %o4), memcpy_retl_o2_plus_o5)
+ add %o0, 8, %o0
+ EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+ subcc %o3, 1, %o3
+ EX_LD(LOAD(ldx, %o1+24, %o4), memcpy_retl_o2_plus_o5)
+ add %o0, 8, %o0
+ EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1+32, %o4), memcpy_retl_o2_plus_o5)
+ add %o0, 8, %o0
+ EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1+40, %o4), memcpy_retl_o2_plus_o5)
+ add %o0, 8, %o0
+ EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1+48, %o4), memcpy_retl_o2_plus_o5)
+ add %o1, 64, %o1
+ add %o0, 8, %o0
+ EX_ST(STORE_INIT_MRU(%o4, %o0), memcpy_retl_o2_plus_o5)
+ add %o0, 8, %o0
+ EX_LD(LOAD(ldx, %o1-8, %o4), memcpy_retl_o2_plus_o5)
+ sub %o5, 64, %o5
+ bgu %xcc,.Lalign_loop_rest
+ ! mark cache line as LRU
+ EX_ST(STORE_INIT(%o4, %o0), memcpy_retl_o2_plus_o5_plus_64)
+
+ cmp %o5, ST_CHUNK*64
+ bgu,pt %xcc, .Lalign_loop_start
+ mov ST_CHUNK,%o3
+
+ cmp %o5, 0
+ beq .Lalign_done
+ nop
+.Lalign_loop_fin:
+ EX_LD(LOAD(ldx, %o1, %o4), memcpy_retl_o2_plus_o5)
+ EX_ST(STORE(stx, %o4, %o0+8), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1+8, %o4), memcpy_retl_o2_plus_o5)
+ EX_ST(STORE(stx, %o4, %o0+8+8), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1+16, %o4), memcpy_retl_o2_plus_o5)
+ EX_ST(STORE(stx, %o4, %o0+8+16), memcpy_retl_o2_plus_o5)
+ subcc %o5, 64, %o5
+ EX_LD(LOAD(ldx, %o1+24, %o4), memcpy_retl_o2_plus_o5_64)
+ EX_ST(STORE(stx, %o4, %o0+8+24), memcpy_retl_o2_plus_o5_64)
+ EX_LD(LOAD(ldx, %o1+32, %o4), memcpy_retl_o2_plus_o5_64)
+ EX_ST(STORE(stx, %o4, %o0+8+32), memcpy_retl_o2_plus_o5_64)
+ EX_LD(LOAD(ldx, %o1+40, %o4), memcpy_retl_o2_plus_o5_64)
+ EX_ST(STORE(stx, %o4, %o0+8+40), memcpy_retl_o2_plus_o5_64)
+ EX_LD(LOAD(ldx, %o1+48, %o4), memcpy_retl_o2_plus_o5_64)
+ add %o1, 64, %o1
+ EX_ST(STORE(stx, %o4, %o0+8+48), memcpy_retl_o2_plus_o5_64)
+ add %o0, 64, %o0
+ EX_LD(LOAD(ldx, %o1-8, %o4), memcpy_retl_o2_plus_o5_64)
+ bgu %xcc,.Lalign_loop_fin
+ EX_ST(STORE(stx, %o4, %o0), memcpy_retl_o2_plus_o5_64)
+
+.Lalign_done:
+ add %o0, 8, %o0 ! restore %o0 from ASI alignment
+ membar #StoreStore
+ sub %o2, 63, %o2 ! adjust length to allow cc test
+ ba .Lmedl63 ! in .Lmedl63
+ nop
+
+ .align 16
+ ! Dst is on 8 byte boundary; src is not; remaining count > SMALL_MAX
+.Lunalignsetup:
+.Lunalignrejoin:
+ mov %g1, %o3 ! save %g1 as VISEntryHalf clobbers it
+#ifdef NON_USER_COPY
+ VISEntryHalfFast(.Lmedium_vis_entry_fail_cp)
+#else
+ VISEntryHalf
+#endif
+ mov %o3, %g1 ! restore %g1
+
+ set MED_UMAX, %o3
+ cmp %o2, %o3 ! check for.Lmedium unaligned limit
+ bge,pt %xcc,.Lunalign_large
+ prefetch [%o1 + (4 * BLOCK_SIZE)], 20
+ andn %o2, 0x3f, %o5 ! %o5 is multiple of block size
+ and %o2, 0x3f, %o2 ! residue bytes in %o2
+ cmp %o2, 8 ! Insure we do not load beyond
+ bgt .Lunalign_adjust ! end of source buffer
+ andn %o1, 0x7, %o4 ! %o4 has long word aligned src address
+ add %o2, 64, %o2 ! adjust to leave loop
+ sub %o5, 64, %o5 ! early if necessary
+.Lunalign_adjust:
+ alignaddr %o1, %g0, %g0 ! generate %gsr
+ add %o1, %o5, %o1 ! advance %o1 to after blocks
+ EX_LD_FP(LOAD(ldd, %o4, %f0), memcpy_retl_o2_plus_o5)
+.Lunalign_loop:
+ EX_LD_FP(LOAD(ldd, %o4+8, %f2), memcpy_retl_o2_plus_o5)
+ faligndata %f0, %f2, %f16
+ EX_LD_FP(LOAD(ldd, %o4+16, %f4), memcpy_retl_o2_plus_o5)
+ subcc %o5, BLOCK_SIZE, %o5
+ EX_ST_FP(STORE(std, %f16, %o0), memcpy_retl_o2_plus_o5_plus_64)
+ faligndata %f2, %f4, %f18
+ EX_LD_FP(LOAD(ldd, %o4+24, %f6), memcpy_retl_o2_plus_o5_plus_56)
+ EX_ST_FP(STORE(std, %f18, %o0+8), memcpy_retl_o2_plus_o5_plus_56)
+ faligndata %f4, %f6, %f20
+ EX_LD_FP(LOAD(ldd, %o4+32, %f8), memcpy_retl_o2_plus_o5_plus_48)
+ EX_ST_FP(STORE(std, %f20, %o0+16), memcpy_retl_o2_plus_o5_plus_48)
+ faligndata %f6, %f8, %f22
+ EX_LD_FP(LOAD(ldd, %o4+40, %f10), memcpy_retl_o2_plus_o5_plus_40)
+ EX_ST_FP(STORE(std, %f22, %o0+24), memcpy_retl_o2_plus_o5_plus_40)
+ faligndata %f8, %f10, %f24
+ EX_LD_FP(LOAD(ldd, %o4+48, %f12), memcpy_retl_o2_plus_o5_plus_32)
+ EX_ST_FP(STORE(std, %f24, %o0+32), memcpy_retl_o2_plus_o5_plus_32)
+ faligndata %f10, %f12, %f26
+ EX_LD_FP(LOAD(ldd, %o4+56, %f14), memcpy_retl_o2_plus_o5_plus_24)
+ add %o4, BLOCK_SIZE, %o4
+ EX_ST_FP(STORE(std, %f26, %o0+40), memcpy_retl_o2_plus_o5_plus_24)
+ faligndata %f12, %f14, %f28
+ EX_LD_FP(LOAD(ldd, %o4, %f0), memcpy_retl_o2_plus_o5_plus_16)
+ EX_ST_FP(STORE(std, %f28, %o0+48), memcpy_retl_o2_plus_o5_plus_16)
+ faligndata %f14, %f0, %f30
+ EX_ST_FP(STORE(std, %f30, %o0+56), memcpy_retl_o2_plus_o5_plus_8)
+ add %o0, BLOCK_SIZE, %o0
+ bgu,pt %xcc, .Lunalign_loop
+ prefetch [%o4 + (5 * BLOCK_SIZE)], 20
+ ba .Lunalign_done
+ nop
+
+.Lunalign_large:
+ andcc %o0, 0x3f, %o3 ! is dst 64-byte block aligned?
+ bz %xcc, .Lunalignsrc
+ sub %o3, 64, %o3 ! %o3 will be multiple of 8
+ neg %o3 ! bytes until dest is 64 byte aligned
+ sub %o2, %o3, %o2 ! update cnt with bytes to be moved
+ ! Move bytes according to source alignment
+ andcc %o1, 0x1, %o5
+ bnz %xcc, .Lunalignbyte ! check for byte alignment
+ nop
+ andcc %o1, 2, %o5 ! check for half word alignment
+ bnz %xcc, .Lunalignhalf
+ nop
+ ! Src is word aligned
+.Lunalignword:
+ EX_LD_FP(LOAD(ld, %o1, %o4), memcpy_retl_o2_plus_o3) ! load 4 bytes
+ add %o1, 8, %o1 ! increase src ptr by 8
+ EX_ST_FP(STORE(stw, %o4, %o0), memcpy_retl_o2_plus_o3) ! and store 4
+ subcc %o3, 8, %o3 ! decrease count by 8
+ EX_LD_FP(LOAD(ld, %o1-4, %o4), memcpy_retl_o2_plus_o3_plus_4)! load 4
+ add %o0, 8, %o0 ! increase dst ptr by 8
+ bnz %xcc, .Lunalignword
+ EX_ST_FP(STORE(stw, %o4, %o0-4), memcpy_retl_o2_plus_o3_plus_4)
+ ba .Lunalignsrc
+ nop
+
+ ! Src is half-word aligned
+.Lunalignhalf:
+ EX_LD_FP(LOAD(lduh, %o1, %o4), memcpy_retl_o2_plus_o3) ! load 2 bytes
+ sllx %o4, 32, %o5 ! shift left
+ EX_LD_FP(LOAD(lduw, %o1+2, %o4), memcpy_retl_o2_plus_o3)
+ or %o4, %o5, %o5
+ sllx %o5, 16, %o5
+ EX_LD_FP(LOAD(lduh, %o1+6, %o4), memcpy_retl_o2_plus_o3)
+ or %o4, %o5, %o5
+ EX_ST_FP(STORE(stx, %o5, %o0), memcpy_retl_o2_plus_o3)
+ add %o1, 8, %o1
+ subcc %o3, 8, %o3
+ bnz %xcc, .Lunalignhalf
+ add %o0, 8, %o0
+ ba .Lunalignsrc
+ nop
+
+ ! Src is Byte aligned
+.Lunalignbyte:
+ sub %o0, %o1, %o0 ! share pointer advance
+.Lunalignbyte_loop:
+ EX_LD_FP(LOAD(ldub, %o1, %o4), memcpy_retl_o2_plus_o3)
+ sllx %o4, 56, %o5
+ EX_LD_FP(LOAD(lduh, %o1+1, %o4), memcpy_retl_o2_plus_o3)
+ sllx %o4, 40, %o4
+ or %o4, %o5, %o5
+ EX_LD_FP(LOAD(lduh, %o1+3, %o4), memcpy_retl_o2_plus_o3)
+ sllx %o4, 24, %o4
+ or %o4, %o5, %o5
+ EX_LD_FP(LOAD(lduh, %o1+5, %o4), memcpy_retl_o2_plus_o3)
+ sllx %o4, 8, %o4
+ or %o4, %o5, %o5
+ EX_LD_FP(LOAD(ldub, %o1+7, %o4), memcpy_retl_o2_plus_o3)
+ or %o4, %o5, %o5
+ add %o0, %o1, %o0
+ EX_ST_FP(STORE(stx, %o5, %o0), memcpy_retl_o2_plus_o3)
+ sub %o0, %o1, %o0
+ subcc %o3, 8, %o3
+ bnz %xcc, .Lunalignbyte_loop
+ add %o1, 8, %o1
+ add %o0,%o1, %o0 ! restore pointer
+
+ ! Destination is now block (64 byte aligned)
+.Lunalignsrc:
+ andn %o2, 0x3f, %o5 ! %o5 is multiple of block size
+ and %o2, 0x3f, %o2 ! residue bytes in %o2
+ add %o2, 64, %o2 ! Insure we do not load beyond
+ sub %o5, 64, %o5 ! end of source buffer
+
+ andn %o1, 0x7, %o4 ! %o4 has long word aligned src address
+ alignaddr %o1, %g0, %g0 ! generate %gsr
+ add %o1, %o5, %o1 ! advance %o1 to after blocks
+
+ EX_LD_FP(LOAD(ldd, %o4, %f14), memcpy_retl_o2_plus_o5)
+ add %o4, 8, %o4
+.Lunalign_sloop:
+ EX_LD_FP(LOAD(ldd, %o4, %f16), memcpy_retl_o2_plus_o5)
+ faligndata %f14, %f16, %f0
+ EX_LD_FP(LOAD(ldd, %o4+8, %f18), memcpy_retl_o2_plus_o5)
+ faligndata %f16, %f18, %f2
+ EX_LD_FP(LOAD(ldd, %o4+16, %f20), memcpy_retl_o2_plus_o5)
+ faligndata %f18, %f20, %f4
+ EX_ST_FP(STORE(std, %f0, %o0), memcpy_retl_o2_plus_o5)
+ subcc %o5, 64, %o5
+ EX_LD_FP(LOAD(ldd, %o4+24, %f22), memcpy_retl_o2_plus_o5_plus_56)
+ faligndata %f20, %f22, %f6
+ EX_ST_FP(STORE(std, %f2, %o0+8), memcpy_retl_o2_plus_o5_plus_56)
+ EX_LD_FP(LOAD(ldd, %o4+32, %f24), memcpy_retl_o2_plus_o5_plus_48)
+ faligndata %f22, %f24, %f8
+ EX_ST_FP(STORE(std, %f4, %o0+16), memcpy_retl_o2_plus_o5_plus_48)
+ EX_LD_FP(LOAD(ldd, %o4+40, %f26), memcpy_retl_o2_plus_o5_plus_40)
+ faligndata %f24, %f26, %f10
+ EX_ST_FP(STORE(std, %f6, %o0+24), memcpy_retl_o2_plus_o5_plus_40)
+ EX_LD_FP(LOAD(ldd, %o4+48, %f28), memcpy_retl_o2_plus_o5_plus_40)
+ faligndata %f26, %f28, %f12
+ EX_ST_FP(STORE(std, %f8, %o0+32), memcpy_retl_o2_plus_o5_plus_40)
+ add %o4, 64, %o4
+ EX_LD_FP(LOAD(ldd, %o4-8, %f30), memcpy_retl_o2_plus_o5_plus_40)
+ faligndata %f28, %f30, %f14
+ EX_ST_FP(STORE(std, %f10, %o0+40), memcpy_retl_o2_plus_o5_plus_40)
+ EX_ST_FP(STORE(std, %f12, %o0+48), memcpy_retl_o2_plus_o5_plus_40)
+ add %o0, 64, %o0
+ EX_ST_FP(STORE(std, %f14, %o0-8), memcpy_retl_o2_plus_o5_plus_40)
+ fsrc2 %f30, %f14
+ bgu,pt %xcc, .Lunalign_sloop
+ prefetch [%o4 + (8 * BLOCK_SIZE)], 20
+
+.Lunalign_done:
+ ! Handle trailing bytes, 64 to 127
+ ! Dest long word aligned, Src not long word aligned
+ cmp %o2, 15
+ bleu %xcc, .Lunalign_short
+
+ andn %o2, 0x7, %o5 ! %o5 is multiple of 8
+ and %o2, 0x7, %o2 ! residue bytes in %o2
+ add %o2, 8, %o2
+ sub %o5, 8, %o5 ! insure we do not load past end of src
+ andn %o1, 0x7, %o4 ! %o4 has long word aligned src address
+ add %o1, %o5, %o1 ! advance %o1 to after multiple of 8
+ EX_LD_FP(LOAD(ldd, %o4, %f0), memcpy_retl_o2_plus_o5)! fetch partialword
+.Lunalign_by8:
+ EX_LD_FP(LOAD(ldd, %o4+8, %f2), memcpy_retl_o2_plus_o5)
+ add %o4, 8, %o4
+ faligndata %f0, %f2, %f16
+ subcc %o5, 8, %o5
+ EX_ST_FP(STORE(std, %f16, %o0), memcpy_retl_o2_plus_o5)
+ fsrc2 %f2, %f0
+ bgu,pt %xcc, .Lunalign_by8
+ add %o0, 8, %o0
+
+.Lunalign_short:
+#ifdef NON_USER_COPY
+ VISExitHalfFast
+#else
+ VISExitHalf
+#endif
+ ba .Lsmallrest
+ nop
+
+/*
+ * This is a special case of nested memcpy. This can happen when kernel
+ * calls unaligned memcpy back to back without saving FP registers. We need
+ * traps(context switch) to save/restore FP registers. If the kernel calls
+ * memcpy without this trap sequence we will hit FP corruption. Let's use
+ * the normal integer load/store method in this case.
+ */
+
+#ifdef NON_USER_COPY
+.Lmedium_vis_entry_fail_cp:
+ or %o0, %o1, %g2
+#endif
+.Lmedium_cp:
+ LOAD(prefetch, %o1 + 0x40, #n_reads_strong)
+ andcc %g2, 0x7, %g0
+ bne,pn %xcc, .Lmedium_unaligned_cp
+ nop
+
+.Lmedium_noprefetch_cp:
+ andncc %o2, 0x20 - 1, %o5
+ be,pn %xcc, 2f
+ sub %o2, %o5, %o2
+1: EX_LD(LOAD(ldx, %o1 + 0x00, %o3), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1 + 0x08, %g2), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1 + 0x10, %g7), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1 + 0x18, %o4), memcpy_retl_o2_plus_o5)
+ add %o1, 0x20, %o1
+ subcc %o5, 0x20, %o5
+ EX_ST(STORE(stx, %o3, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_32)
+ EX_ST(STORE(stx, %g2, %o0 + 0x08), memcpy_retl_o2_plus_o5_plus_24)
+ EX_ST(STORE(stx, %g7, %o0 + 0x10), memcpy_retl_o2_plus_o5_plus_24)
+ EX_ST(STORE(stx, %o4, %o0 + 0x18), memcpy_retl_o2_plus_o5_plus_8)
+ bne,pt %xcc, 1b
+ add %o0, 0x20, %o0
+2: andcc %o2, 0x18, %o5
+ be,pt %xcc, 3f
+ sub %o2, %o5, %o2
+1: EX_LD(LOAD(ldx, %o1 + 0x00, %o3), memcpy_retl_o2_plus_o5)
+ add %o1, 0x08, %o1
+ add %o0, 0x08, %o0
+ subcc %o5, 0x08, %o5
+ bne,pt %xcc, 1b
+ EX_ST(STORE(stx, %o3, %o0 - 0x08), memcpy_retl_o2_plus_o5_plus_8)
+3: brz,pt %o2, .Lexit_cp
+ cmp %o2, 0x04
+ bl,pn %xcc, .Ltiny_cp
+ nop
+ EX_LD(LOAD(lduw, %o1 + 0x00, %o3), memcpy_retl_o2)
+ add %o1, 0x04, %o1
+ add %o0, 0x04, %o0
+ subcc %o2, 0x04, %o2
+ bne,pn %xcc, .Ltiny_cp
+ EX_ST(STORE(stw, %o3, %o0 - 0x04), memcpy_retl_o2_plus_4)
+ ba,a,pt %xcc, .Lexit_cp
+
+.Lmedium_unaligned_cp:
+ /* First get dest 8 byte aligned. */
+ sub %g0, %o0, %o3
+ and %o3, 0x7, %o3
+ brz,pt %o3, 2f
+ sub %o2, %o3, %o2
+
+1: EX_LD(LOAD(ldub, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
+ add %o1, 1, %o1
+ subcc %o3, 1, %o3
+ add %o0, 1, %o0
+ bne,pt %xcc, 1b
+ EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
+2:
+ and %o1, 0x7, %o3
+ brz,pn %o3, .Lmedium_noprefetch_cp
+ sll %o3, 3, %o3
+ mov 64, %g2
+ sub %g2, %o3, %g2
+ andn %o1, 0x7, %o1
+ EX_LD(LOAD(ldx, %o1 + 0x00, %o4), memcpy_retl_o2)
+ sllx %o4, %o3, %o4
+ andn %o2, 0x08 - 1, %o5
+ sub %o2, %o5, %o2
+
+1: EX_LD(LOAD(ldx, %o1 + 0x08, %g3), memcpy_retl_o2_plus_o5)
+ add %o1, 0x08, %o1
+ subcc %o5, 0x08, %o5
+ srlx %g3, %g2, %g7
+ or %g7, %o4, %g7
+ EX_ST(STORE(stx, %g7, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_8)
+ add %o0, 0x08, %o0
+ bne,pt %xcc, 1b
+ sllx %g3, %o3, %o4
+ srl %o3, 3, %o3
+ add %o1, %o3, %o1
+ brz,pn %o2, .Lexit_cp
+ nop
+ ba,pt %xcc, .Lsmall_unaligned_cp
+
+.Ltiny_cp:
+ EX_LD(LOAD(ldub, %o1 + 0x00, %o3), memcpy_retl_o2)
+ subcc %o2, 1, %o2
+ be,pn %xcc, .Lexit_cp
+ EX_ST(STORE(stb, %o3, %o0 + 0x00), memcpy_retl_o2_plus_1)
+ EX_LD(LOAD(ldub, %o1 + 0x01, %o3), memcpy_retl_o2)
+ subcc %o2, 1, %o2
+ be,pn %xcc, .Lexit_cp
+ EX_ST(STORE(stb, %o3, %o0 + 0x01), memcpy_retl_o2_plus_1)
+ EX_LD(LOAD(ldub, %o1 + 0x02, %o3), memcpy_retl_o2)
+ ba,pt %xcc, .Lexit_cp
+ EX_ST(STORE(stb, %o3, %o0 + 0x02), memcpy_retl_o2)
+
+.Lsmall_cp:
+ andcc %g2, 0x3, %g0
+ bne,pn %xcc, .Lsmall_unaligned_cp
+ andn %o2, 0x4 - 1, %o5
+ sub %o2, %o5, %o2
+1:
+ EX_LD(LOAD(lduw, %o1 + 0x00, %o3), memcpy_retl_o2_plus_o5)
+ add %o1, 0x04, %o1
+ subcc %o5, 0x04, %o5
+ add %o0, 0x04, %o0
+ bne,pt %xcc, 1b
+ EX_ST(STORE(stw, %o3, %o0 - 0x04), memcpy_retl_o2_plus_o5_plus_4)
+ brz,pt %o2, .Lexit_cp
+ nop
+ ba,a,pt %xcc, .Ltiny_cp
+
+.Lsmall_unaligned_cp:
+1: EX_LD(LOAD(ldub, %o1 + 0x00, %o3), memcpy_retl_o2)
+ add %o1, 1, %o1
+ add %o0, 1, %o0
+ subcc %o2, 1, %o2
+ bne,pt %xcc, 1b
+ EX_ST(STORE(stb, %o3, %o0 - 0x01), memcpy_retl_o2_plus_1)
+ ba,a,pt %xcc, .Lexit_cp
+
+.Lsmallrest:
+ tst %o2
+ bz,pt %xcc, .Lsmallx
+ cmp %o2, 4
+ blt,pn %xcc, .Lsmallleft3
+ nop
+ sub %o2, 3, %o2
+.Lsmallnotalign4:
+ EX_LD(LOAD(ldub, %o1, %o3), memcpy_retl_o2_plus_3)! read byte
+ subcc %o2, 4, %o2 ! reduce count by 4
+ EX_ST(STORE(stb, %o3, %o0), memcpy_retl_o2_plus_7)! write byte & repeat
+ EX_LD(LOAD(ldub, %o1+1, %o3), memcpy_retl_o2_plus_6)! for total of 4
+ add %o1, 4, %o1 ! advance SRC by 4
+ EX_ST(STORE(stb, %o3, %o0+1), memcpy_retl_o2_plus_6)
+ EX_LD(LOAD(ldub, %o1-2, %o3), memcpy_retl_o2_plus_5)
+ add %o0, 4, %o0 ! advance DST by 4
+ EX_ST(STORE(stb, %o3, %o0-2), memcpy_retl_o2_plus_5)
+ EX_LD(LOAD(ldub, %o1-1, %o3), memcpy_retl_o2_plus_4)
+ bgu,pt %xcc, .Lsmallnotalign4 ! loop til 3 or fewer bytes remain
+ EX_ST(STORE(stb, %o3, %o0-1), memcpy_retl_o2_plus_4)
+ addcc %o2, 3, %o2 ! restore count
+ bz,pt %xcc, .Lsmallx
+.Lsmallleft3: ! 1, 2, or 3 bytes remain
+ subcc %o2, 1, %o2
+ EX_LD(LOAD(ldub, %o1, %o3), memcpy_retl_o2_plus_1) ! load one byte
+ bz,pt %xcc, .Lsmallx
+ EX_ST(STORE(stb, %o3, %o0), memcpy_retl_o2_plus_1) ! store one byte
+ EX_LD(LOAD(ldub, %o1+1, %o3), memcpy_retl_o2) ! load second byte
+ subcc %o2, 1, %o2
+ bz,pt %xcc, .Lsmallx
+ EX_ST(STORE(stb, %o3, %o0+1), memcpy_retl_o2_plus_1)! store second byte
+ EX_LD(LOAD(ldub, %o1+2, %o3), memcpy_retl_o2) ! load third byte
+ EX_ST(STORE(stb, %o3, %o0+2), memcpy_retl_o2) ! store third byte
+.Lsmallx:
+ retl
+ mov EX_RETVAL(%g1), %o0
+.Lsmallfin:
+ tst %o2
+ bnz,pn %xcc, .Lsmallleft3
+ nop
+ retl
+ mov EX_RETVAL(%g1), %o0 ! restore %o0
+.Lexit_cp:
+ retl
+ mov EX_RETVAL(%g1), %o0
+ .size FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/M7memset.S b/arch/sparc/lib/M7memset.S
new file mode 100644
index 000000000000..62ea91b3a6b8
--- /dev/null
+++ b/arch/sparc/lib/M7memset.S
@@ -0,0 +1,352 @@
+/*
+ * M7memset.S: SPARC M7 optimized memset.
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ */
+
+/*
+ * M7memset.S: M7 optimized memset.
+ *
+ * char *memset(sp, c, n)
+ *
+ * Set an array of n chars starting at sp to the character c.
+ * Return sp.
+ *
+ * Fast assembler language version of the following C-program for memset
+ * which represents the `standard' for the C-library.
+ *
+ * void *
+ * memset(void *sp1, int c, size_t n)
+ * {
+ * if (n != 0) {
+ * char *sp = sp1;
+ * do {
+ * *sp++ = (char)c;
+ * } while (--n != 0);
+ * }
+ * return (sp1);
+ * }
+ *
+ * The algorithm is as follows :
+ *
+ * For small 6 or fewer bytes stores, bytes will be stored.
+ *
+ * For less than 32 bytes stores, align the address on 4 byte boundary.
+ * Then store as many 4-byte chunks, followed by trailing bytes.
+ *
+ * For sizes greater than 32 bytes, align the address on 8 byte boundary.
+ * if (count >= 64) {
+ * store 8-bytes chunks to align the address on 64 byte boundary
+ * if (value to be set is zero && count >= MIN_ZERO) {
+ * Using BIS stores, set the first long word of each
+ * 64-byte cache line to zero which will also clear the
+ * other seven long words of the cache line.
+ * }
+ * else if (count >= MIN_LOOP) {
+ * Using BIS stores, set the first long word of each of
+ * ST_CHUNK cache lines (64 bytes each) before the main
+ * loop is entered.
+ * In the main loop, continue pre-setting the first long
+ * word of each cache line ST_CHUNK lines in advance while
+ * setting the other seven long words (56 bytes) of each
+ * cache line until fewer than ST_CHUNK*64 bytes remain.
+ * Then set the remaining seven long words of each cache
+ * line that has already had its first long word set.
+ * }
+ * store remaining data in 64-byte chunks until less than
+ * 64 bytes remain.
+ * }
+ * Store as many 8-byte chunks, followed by trailing bytes.
+ *
+ * BIS = Block Init Store
+ * Doing the advance store of the first element of the cache line
+ * initiates the displacement of a cache line while only using a single
+ * instruction in the pipeline. That avoids various pipeline delays,
+ * such as filling the miss buffer. The performance effect is
+ * similar to prefetching for normal stores.
+ * The special case for zero fills runs faster and uses fewer instruction
+ * cycles than the normal memset loop.
+ *
+ * We only use BIS for memset of greater than MIN_LOOP bytes because a sequence
+ * BIS stores must be followed by a membar #StoreStore. The benefit of
+ * the BIS store must be balanced against the cost of the membar operation.
+ */
+
+/*
+ * ASI_STBI_P marks the cache line as "least recently used"
+ * which means if many threads are active, it has a high chance
+ * of being pushed out of the cache between the first initializing
+ * store and the final stores.
+ * Thus, we use ASI_STBIMRU_P which marks the cache line as
+ * "most recently used" for all but the last store to the cache line.
+ */
+
+#include <asm/asi.h>
+#include <asm/page.h>
+
+#define ASI_STBI_P ASI_BLK_INIT_QUAD_LDD_P
+#define ASI_STBIMRU_P ASI_ST_BLKINIT_MRU_P
+
+
+#define ST_CHUNK 24 /* multiple of 4 due to loop unrolling */
+#define MIN_LOOP 16320
+#define MIN_ZERO 512
+
+ .section ".text"
+ .align 32
+
+/*
+ * Define clear_page(dest) as memset(dest, 0, PAGE_SIZE)
+ * (can create a more optimized version later.)
+ */
+ .globl M7clear_page
+ .globl M7clear_user_page
+M7clear_page: /* clear_page(dest) */
+M7clear_user_page:
+ set PAGE_SIZE, %o1
+ /* fall through into bzero code */
+
+ .size M7clear_page,.-M7clear_page
+ .size M7clear_user_page,.-M7clear_user_page
+
+/*
+ * Define bzero(dest, n) as memset(dest, 0, n)
+ * (can create a more optimized version later.)
+ */
+ .globl M7bzero
+M7bzero: /* bzero(dest, size) */
+ mov %o1, %o2
+ mov 0, %o1
+ /* fall through into memset code */
+
+ .size M7bzero,.-M7bzero
+
+ .global M7memset
+ .type M7memset, #function
+ .register %g3, #scratch
+M7memset:
+ mov %o0, %o5 ! copy sp1 before using it
+ cmp %o2, 7 ! if small counts, just write bytes
+ bleu,pn %xcc, .wrchar
+ and %o1, 0xff, %o1 ! o1 is (char)c
+
+ sll %o1, 8, %o3
+ or %o1, %o3, %o1 ! now o1 has 2 bytes of c
+ sll %o1, 16, %o3
+ cmp %o2, 32
+ blu,pn %xcc, .wdalign
+ or %o1, %o3, %o1 ! now o1 has 4 bytes of c
+
+ sllx %o1, 32, %o3
+ or %o1, %o3, %o1 ! now o1 has 8 bytes of c
+
+.dbalign:
+ andcc %o5, 7, %o3 ! is sp1 aligned on a 8 byte bound?
+ bz,pt %xcc, .blkalign ! already long word aligned
+ sub %o3, 8, %o3 ! -(bytes till long word aligned)
+
+ add %o2, %o3, %o2 ! update o2 with new count
+ ! Set -(%o3) bytes till sp1 long word aligned
+1: stb %o1, [%o5] ! there is at least 1 byte to set
+ inccc %o3 ! byte clearing loop
+ bl,pt %xcc, 1b
+ inc %o5
+
+ ! Now sp1 is long word aligned (sp1 is found in %o5)
+.blkalign:
+ cmp %o2, 64 ! check if there are 64 bytes to set
+ blu,pn %xcc, .wrshort
+ mov %o2, %o3
+
+ andcc %o5, 63, %o3 ! is sp1 block aligned?
+ bz,pt %xcc, .blkwr ! now block aligned
+ sub %o3, 64, %o3 ! o3 is -(bytes till block aligned)
+ add %o2, %o3, %o2 ! o2 is the remainder
+
+ ! Store -(%o3) bytes till dst is block (64 byte) aligned.
+ ! Use long word stores.
+ ! Recall that dst is already long word aligned
+1:
+ addcc %o3, 8, %o3
+ stx %o1, [%o5]
+ bl,pt %xcc, 1b
+ add %o5, 8, %o5
+
+ ! Now sp1 is block aligned
+.blkwr:
+ andn %o2, 63, %o4 ! calculate size of blocks in bytes
+ brz,pn %o1, .wrzero ! special case if c == 0
+ and %o2, 63, %o3 ! %o3 = bytes left after blk stores.
+
+ set MIN_LOOP, %g1
+ cmp %o4, %g1 ! check there are enough bytes to set
+ blu,pn %xcc, .short_set ! to justify cost of membar
+ ! must be > pre-cleared lines
+ nop
+
+ ! initial cache-clearing stores
+ ! get store pipeline moving
+ rd %asi, %g3 ! save %asi to be restored later
+ wr %g0, ASI_STBIMRU_P, %asi
+
+ ! Primary memset loop for large memsets
+.wr_loop:
+ sub %o5, 8, %o5 ! adjust %o5 for ASI store alignment
+ mov ST_CHUNK, %g1
+.wr_loop_start:
+ stxa %o1, [%o5+8]%asi
+ subcc %g1, 4, %g1
+ stxa %o1, [%o5+8+64]%asi
+ add %o5, 256, %o5
+ stxa %o1, [%o5+8-128]%asi
+ bgu %xcc, .wr_loop_start
+ stxa %o1, [%o5+8-64]%asi
+
+ sub %o5, ST_CHUNK*64, %o5 ! reset %o5
+ mov ST_CHUNK, %g1
+
+.wr_loop_rest:
+ stxa %o1, [%o5+8+8]%asi
+ sub %o4, 64, %o4
+ stxa %o1, [%o5+16+8]%asi
+ subcc %g1, 1, %g1
+ stxa %o1, [%o5+24+8]%asi
+ stxa %o1, [%o5+32+8]%asi
+ stxa %o1, [%o5+40+8]%asi
+ add %o5, 64, %o5
+ stxa %o1, [%o5-8]%asi
+ bgu %xcc, .wr_loop_rest
+ stxa %o1, [%o5]ASI_STBI_P
+
+ ! If more than ST_CHUNK*64 bytes remain to set, continue
+ ! setting the first long word of each cache line in advance
+ ! to keep the store pipeline moving.
+
+ cmp %o4, ST_CHUNK*64
+ bge,pt %xcc, .wr_loop_start
+ mov ST_CHUNK, %g1
+
+ brz,a,pn %o4, .asi_done
+ add %o5, 8, %o5 ! restore %o5 offset
+
+.wr_loop_small:
+ stxa %o1, [%o5+8]%asi
+ stxa %o1, [%o5+8+8]%asi
+ stxa %o1, [%o5+16+8]%asi
+ stxa %o1, [%o5+24+8]%asi
+ stxa %o1, [%o5+32+8]%asi
+ subcc %o4, 64, %o4
+ stxa %o1, [%o5+40+8]%asi
+ add %o5, 64, %o5
+ stxa %o1, [%o5-8]%asi
+ bgu,pt %xcc, .wr_loop_small
+ stxa %o1, [%o5]ASI_STBI_P
+
+ ba .asi_done
+ add %o5, 8, %o5 ! restore %o5 offset
+
+ ! Special case loop for zero fill memsets
+ ! For each 64 byte cache line, single STBI to first element
+ ! clears line
+.wrzero:
+ cmp %o4, MIN_ZERO ! check if enough bytes to set
+ ! to pay %asi + membar cost
+ blu %xcc, .short_set
+ nop
+ sub %o4, 256, %o4
+
+.wrzero_loop:
+ mov 64, %g3
+ stxa %o1, [%o5]ASI_STBI_P
+ subcc %o4, 256, %o4
+ stxa %o1, [%o5+%g3]ASI_STBI_P
+ add %o5, 256, %o5
+ sub %g3, 192, %g3
+ stxa %o1, [%o5+%g3]ASI_STBI_P
+ add %g3, 64, %g3
+ bge,pt %xcc, .wrzero_loop
+ stxa %o1, [%o5+%g3]ASI_STBI_P
+ add %o4, 256, %o4
+
+ brz,pn %o4, .bsi_done
+ nop
+
+.wrzero_small:
+ stxa %o1, [%o5]ASI_STBI_P
+ subcc %o4, 64, %o4
+ bgu,pt %xcc, .wrzero_small
+ add %o5, 64, %o5
+ ba,a .bsi_done
+
+.asi_done:
+ wr %g3, 0x0, %asi ! restored saved %asi
+.bsi_done:
+ membar #StoreStore ! required by use of Block Store Init
+
+.short_set:
+ cmp %o4, 64 ! check if 64 bytes to set
+ blu %xcc, 5f
+ nop
+4: ! set final blocks of 64 bytes
+ stx %o1, [%o5]
+ stx %o1, [%o5+8]
+ stx %o1, [%o5+16]
+ stx %o1, [%o5+24]
+ subcc %o4, 64, %o4
+ stx %o1, [%o5+32]
+ stx %o1, [%o5+40]
+ add %o5, 64, %o5
+ stx %o1, [%o5-16]
+ bgu,pt %xcc, 4b
+ stx %o1, [%o5-8]
+
+5:
+ ! Set the remaining long words
+.wrshort:
+ subcc %o3, 8, %o3 ! Can we store any long words?
+ blu,pn %xcc, .wrchars
+ and %o2, 7, %o2 ! calc bytes left after long words
+6:
+ subcc %o3, 8, %o3
+ stx %o1, [%o5] ! store the long words
+ bgeu,pt %xcc, 6b
+ add %o5, 8, %o5
+
+.wrchars: ! check for extra chars
+ brnz %o2, .wrfin
+ nop
+ retl
+ nop
+
+.wdalign:
+ andcc %o5, 3, %o3 ! is sp1 aligned on a word boundary
+ bz,pn %xcc, .wrword
+ andn %o2, 3, %o3 ! create word sized count in %o3
+
+ dec %o2 ! decrement count
+ stb %o1, [%o5] ! clear a byte
+ b .wdalign
+ inc %o5 ! next byte
+
+.wrword:
+ subcc %o3, 4, %o3
+ st %o1, [%o5] ! 4-byte writing loop
+ bnz,pt %xcc, .wrword
+ add %o5, 4, %o5
+
+ and %o2, 3, %o2 ! leftover count, if any
+
+.wrchar:
+ ! Set the remaining bytes, if any
+ brz %o2, .exit
+ nop
+.wrfin:
+ deccc %o2
+ stb %o1, [%o5]
+ bgu,pt %xcc, .wrfin
+ inc %o5
+.exit:
+ retl ! %o0 was preserved
+ nop
+
+ .size M7memset,.-M7memset
diff --git a/arch/sparc/lib/M7patch.S b/arch/sparc/lib/M7patch.S
new file mode 100644
index 000000000000..9000b7bc5f2b
--- /dev/null
+++ b/arch/sparc/lib/M7patch.S
@@ -0,0 +1,51 @@
+/*
+ * M7patch.S: Patch generic routines with M7 variant.
+ *
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include <linux/linkage.h>
+
+#define BRANCH_ALWAYS 0x10680000
+#define NOP 0x01000000
+#define NG_DO_PATCH(OLD, NEW) \
+ sethi %hi(NEW), %g1; \
+ or %g1, %lo(NEW), %g1; \
+ sethi %hi(OLD), %g2; \
+ or %g2, %lo(OLD), %g2; \
+ sub %g1, %g2, %g1; \
+ sethi %hi(BRANCH_ALWAYS), %g3; \
+ sll %g1, 11, %g1; \
+ srl %g1, 11 + 2, %g1; \
+ or %g3, %lo(BRANCH_ALWAYS), %g3; \
+ or %g3, %g1, %g3; \
+ stw %g3, [%g2]; \
+ sethi %hi(NOP), %g3; \
+ or %g3, %lo(NOP), %g3; \
+ stw %g3, [%g2 + 0x4]; \
+ flush %g2;
+
+ENTRY(m7_patch_copyops)
+ NG_DO_PATCH(memcpy, M7memcpy)
+ NG_DO_PATCH(raw_copy_from_user, M7copy_from_user)
+ NG_DO_PATCH(raw_copy_to_user, M7copy_to_user)
+ retl
+ nop
+ENDPROC(m7_patch_copyops)
+
+ENTRY(m7_patch_bzero)
+ NG_DO_PATCH(memset, M7memset)
+ NG_DO_PATCH(__bzero, M7bzero)
+ NG_DO_PATCH(__clear_user, NGclear_user)
+ NG_DO_PATCH(tsb_init, NGtsb_init)
+ retl
+ nop
+ENDPROC(m7_patch_bzero)
+
+ENTRY(m7_patch_pageops)
+ NG_DO_PATCH(copy_user_page, NG4copy_user_page)
+ NG_DO_PATCH(_clear_page, M7clear_page)
+ NG_DO_PATCH(clear_user_page, M7clear_user_page)
+ retl
+ nop
+ENDPROC(m7_patch_pageops)
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index 07c03e72d812..a1a2d39ec96e 100644
--- a/arch/sparc/lib/Makefile
+++ b/arch/sparc/lib/Makefile
@@ -36,6 +36,11 @@ lib-$(CONFIG_SPARC64) += NG2patch.o
lib-$(CONFIG_SPARC64) += NG4memcpy.o NG4copy_from_user.o NG4copy_to_user.o
lib-$(CONFIG_SPARC64) += NG4patch.o NG4copy_page.o NG4clear_page.o NG4memset.o
+lib-$(CONFIG_SPARC64) += Memcpy_utils.o
+
+lib-$(CONFIG_SPARC64) += M7memcpy.o M7copy_from_user.o M7copy_to_user.o
+lib-$(CONFIG_SPARC64) += M7patch.o M7memset.o
+
lib-$(CONFIG_SPARC64) += GENmemcpy.o GENcopy_from_user.o GENcopy_to_user.o
lib-$(CONFIG_SPARC64) += GENpatch.o GENpage.o GENbzero.o
diff --git a/arch/sparc/lib/Memcpy_utils.S b/arch/sparc/lib/Memcpy_utils.S
new file mode 100644
index 000000000000..64fbac28b3db
--- /dev/null
+++ b/arch/sparc/lib/Memcpy_utils.S
@@ -0,0 +1,345 @@
+#ifndef __ASM_MEMCPY_UTILS
+#define __ASM_MEMCPY_UTILS
+
+#include <linux/linkage.h>
+#include <asm/asi.h>
+#include <asm/visasm.h>
+
+ENTRY(__restore_asi_fp)
+ VISExitHalf
+ retl
+ wr %g0, ASI_AIUS, %asi
+ENDPROC(__restore_asi_fp)
+
+ENTRY(__restore_asi)
+ retl
+ wr %g0, ASI_AIUS, %asi
+ENDPROC(__restore_asi)
+
+ENTRY(memcpy_retl_o2)
+ ba,pt %xcc, __restore_asi
+ mov %o2, %o0
+ENDPROC(memcpy_retl_o2)
+ENTRY(memcpy_retl_o2_plus_1)
+ ba,pt %xcc, __restore_asi
+ add %o2, 1, %o0
+ENDPROC(memcpy_retl_o2_plus_1)
+ENTRY(memcpy_retl_o2_plus_3)
+ ba,pt %xcc, __restore_asi
+ add %o2, 3, %o0
+ENDPROC(memcpy_retl_o2_plus_3)
+ENTRY(memcpy_retl_o2_plus_4)
+ ba,pt %xcc, __restore_asi
+ add %o2, 4, %o0
+ENDPROC(memcpy_retl_o2_plus_4)
+ENTRY(memcpy_retl_o2_plus_5)
+ ba,pt %xcc, __restore_asi
+ add %o2, 5, %o0
+ENDPROC(memcpy_retl_o2_plus_5)
+ENTRY(memcpy_retl_o2_plus_6)
+ ba,pt %xcc, __restore_asi
+ add %o2, 6, %o0
+ENDPROC(memcpy_retl_o2_plus_6)
+ENTRY(memcpy_retl_o2_plus_7)
+ ba,pt %xcc, __restore_asi
+ add %o2, 7, %o0
+ENDPROC(memcpy_retl_o2_plus_7)
+ENTRY(memcpy_retl_o2_plus_8)
+ ba,pt %xcc, __restore_asi
+ add %o2, 8, %o0
+ENDPROC(memcpy_retl_o2_plus_8)
+ENTRY(memcpy_retl_o2_plus_15)
+ ba,pt %xcc, __restore_asi
+ add %o2, 15, %o0
+ENDPROC(memcpy_retl_o2_plus_15)
+ENTRY(memcpy_retl_o2_plus_15_8)
+ add %o2, 15, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 8, %o0
+ENDPROC(memcpy_retl_o2_plus_15_8)
+ENTRY(memcpy_retl_o2_plus_16)
+ ba,pt %xcc, __restore_asi
+ add %o2, 16, %o0
+ENDPROC(memcpy_retl_o2_plus_16)
+ENTRY(memcpy_retl_o2_plus_24)
+ ba,pt %xcc, __restore_asi
+ add %o2, 24, %o0
+ENDPROC(memcpy_retl_o2_plus_24)
+ENTRY(memcpy_retl_o2_plus_31)
+ ba,pt %xcc, __restore_asi
+ add %o2, 31, %o0
+ENDPROC(memcpy_retl_o2_plus_31)
+ENTRY(memcpy_retl_o2_plus_32)
+ ba,pt %xcc, __restore_asi
+ add %o2, 32, %o0
+ENDPROC(memcpy_retl_o2_plus_32)
+ENTRY(memcpy_retl_o2_plus_31_32)
+ add %o2, 31, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 32, %o0
+ENDPROC(memcpy_retl_o2_plus_31_32)
+ENTRY(memcpy_retl_o2_plus_31_24)
+ add %o2, 31, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 24, %o0
+ENDPROC(memcpy_retl_o2_plus_31_24)
+ENTRY(memcpy_retl_o2_plus_31_16)
+ add %o2, 31, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 16, %o0
+ENDPROC(memcpy_retl_o2_plus_31_16)
+ENTRY(memcpy_retl_o2_plus_31_8)
+ add %o2, 31, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 8, %o0
+ENDPROC(memcpy_retl_o2_plus_31_8)
+ENTRY(memcpy_retl_o2_plus_63)
+ ba,pt %xcc, __restore_asi
+ add %o2, 63, %o0
+ENDPROC(memcpy_retl_o2_plus_63)
+ENTRY(memcpy_retl_o2_plus_63_64)
+ add %o2, 63, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 64, %o0
+ENDPROC(memcpy_retl_o2_plus_63_64)
+ENTRY(memcpy_retl_o2_plus_63_56)
+ add %o2, 63, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 56, %o0
+ENDPROC(memcpy_retl_o2_plus_63_56)
+ENTRY(memcpy_retl_o2_plus_63_48)
+ add %o2, 63, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 48, %o0
+ENDPROC(memcpy_retl_o2_plus_63_48)
+ENTRY(memcpy_retl_o2_plus_63_40)
+ add %o2, 63, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 40, %o0
+ENDPROC(memcpy_retl_o2_plus_63_40)
+ENTRY(memcpy_retl_o2_plus_63_32)
+ add %o2, 63, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 32, %o0
+ENDPROC(memcpy_retl_o2_plus_63_32)
+ENTRY(memcpy_retl_o2_plus_63_24)
+ add %o2, 63, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 24, %o0
+ENDPROC(memcpy_retl_o2_plus_63_24)
+ENTRY(memcpy_retl_o2_plus_63_16)
+ add %o2, 63, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 16, %o0
+ENDPROC(memcpy_retl_o2_plus_63_16)
+ENTRY(memcpy_retl_o2_plus_63_8)
+ add %o2, 63, %o2
+ ba,pt %xcc, __restore_asi
+ add %o2, 8, %o0
+ENDPROC(memcpy_retl_o2_plus_63_8)
+ENTRY(memcpy_retl_o2_plus_o5)
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5)
+ENTRY(memcpy_retl_o2_plus_o5_plus_1)
+ add %o5, 1, %o5
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_1)
+ENTRY(memcpy_retl_o2_plus_o5_plus_4)
+ add %o5, 4, %o5
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_4)
+ENTRY(memcpy_retl_o2_plus_o5_plus_8)
+ add %o5, 8, %o5
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_8)
+ENTRY(memcpy_retl_o2_plus_o5_plus_16)
+ add %o5, 16, %o5
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_16)
+ENTRY(memcpy_retl_o2_plus_o5_plus_24)
+ add %o5, 24, %o5
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_24)
+ENTRY(memcpy_retl_o2_plus_o5_plus_32)
+ add %o5, 32, %o5
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_32)
+ENTRY(memcpy_retl_o2_plus_o5_64)
+ add %o5, 32, %o5
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_64)
+ENTRY(memcpy_retl_o2_plus_g1)
+ ba,pt %xcc, __restore_asi
+ add %o2, %g1, %o0
+ENDPROC(memcpy_retl_o2_plus_g1)
+ENTRY(memcpy_retl_o2_plus_g1_plus_1)
+ add %g1, 1, %g1
+ ba,pt %xcc, __restore_asi
+ add %o2, %g1, %o0
+ENDPROC(memcpy_retl_o2_plus_g1_plus_1)
+ENTRY(memcpy_retl_o2_plus_g1_plus_8)
+ add %g1, 8, %g1
+ ba,pt %xcc, __restore_asi
+ add %o2, %g1, %o0
+ENDPROC(memcpy_retl_o2_plus_g1_plus_8)
+ENTRY(memcpy_retl_o2_plus_o4)
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4)
+ENTRY(memcpy_retl_o2_plus_o4_plus_8)
+ add %o4, 8, %o4
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_8)
+ENTRY(memcpy_retl_o2_plus_o4_plus_16)
+ add %o4, 16, %o4
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_16)
+ENTRY(memcpy_retl_o2_plus_o4_plus_24)
+ add %o4, 24, %o4
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_24)
+ENTRY(memcpy_retl_o2_plus_o4_plus_32)
+ add %o4, 32, %o4
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_32)
+ENTRY(memcpy_retl_o2_plus_o4_plus_40)
+ add %o4, 40, %o4
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_40)
+ENTRY(memcpy_retl_o2_plus_o4_plus_48)
+ add %o4, 48, %o4
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_48)
+ENTRY(memcpy_retl_o2_plus_o4_plus_56)
+ add %o4, 56, %o4
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_56)
+ENTRY(memcpy_retl_o2_plus_o4_plus_64)
+ add %o4, 64, %o4
+ ba,pt %xcc, __restore_asi
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_64)
+ENTRY(memcpy_retl_o2_plus_o5_plus_64)
+ add %o5, 64, %o5
+ ba,pt %xcc, __restore_asi
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_64)
+ENTRY(memcpy_retl_o2_plus_o3_fp)
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o3, %o0
+ENDPROC(memcpy_retl_o2_plus_o3_fp)
+ENTRY(memcpy_retl_o2_plus_o3_plus_1_fp)
+ add %o3, 1, %o3
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o3, %o0
+ENDPROC(memcpy_retl_o2_plus_o3_plus_1_fp)
+ENTRY(memcpy_retl_o2_plus_o3_plus_4_fp)
+ add %o3, 4, %o3
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o3, %o0
+ENDPROC(memcpy_retl_o2_plus_o3_plus_4_fp)
+ENTRY(memcpy_retl_o2_plus_o4_fp)
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_8_fp)
+ add %o4, 8, %o4
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_8_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_16_fp)
+ add %o4, 16, %o4
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_16_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_24_fp)
+ add %o4, 24, %o4
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_24_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_32_fp)
+ add %o4, 32, %o4
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_32_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_40_fp)
+ add %o4, 40, %o4
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_40_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_48_fp)
+ add %o4, 48, %o4
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_48_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_56_fp)
+ add %o4, 56, %o4
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_56_fp)
+ENTRY(memcpy_retl_o2_plus_o4_plus_64_fp)
+ add %o4, 64, %o4
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o4, %o0
+ENDPROC(memcpy_retl_o2_plus_o4_plus_64_fp)
+ENTRY(memcpy_retl_o2_plus_o5_fp)
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_64_fp)
+ add %o5, 64, %o5
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_64_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_56_fp)
+ add %o5, 56, %o5
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_56_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_48_fp)
+ add %o5, 48, %o5
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_48_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_40_fp)
+ add %o5, 40, %o5
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_40_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_32_fp)
+ add %o5, 32, %o5
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_32_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_24_fp)
+ add %o5, 24, %o5
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_24_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_16_fp)
+ add %o5, 16, %o5
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_16_fp)
+ENTRY(memcpy_retl_o2_plus_o5_plus_8_fp)
+ add %o5, 8, %o5
+ ba,pt %xcc, __restore_asi_fp
+ add %o2, %o5, %o0
+ENDPROC(memcpy_retl_o2_plus_o5_plus_8_fp)
+
+#endif
diff --git a/arch/sparc/lib/NG4memcpy.S b/arch/sparc/lib/NG4memcpy.S
index 78ea962edcbe..b5dacd1d2078 100644
--- a/arch/sparc/lib/NG4memcpy.S
+++ b/arch/sparc/lib/NG4memcpy.S
@@ -94,155 +94,6 @@
.text
#ifndef EX_RETVAL
#define EX_RETVAL(x) x
-__restore_asi_fp:
- VISExitHalf
-__restore_asi:
- retl
- wr %g0, ASI_AIUS, %asi
-
-ENTRY(NG4_retl_o2)
- ba,pt %xcc, __restore_asi
- mov %o2, %o0
-ENDPROC(NG4_retl_o2)
-ENTRY(NG4_retl_o2_plus_1)
- ba,pt %xcc, __restore_asi
- add %o2, 1, %o0
-ENDPROC(NG4_retl_o2_plus_1)
-ENTRY(NG4_retl_o2_plus_4)
- ba,pt %xcc, __restore_asi
- add %o2, 4, %o0
-ENDPROC(NG4_retl_o2_plus_4)
-ENTRY(NG4_retl_o2_plus_o5)
- ba,pt %xcc, __restore_asi
- add %o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5)
-ENTRY(NG4_retl_o2_plus_o5_plus_4)
- add %o5, 4, %o5
- ba,pt %xcc, __restore_asi
- add %o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_4)
-ENTRY(NG4_retl_o2_plus_o5_plus_8)
- add %o5, 8, %o5
- ba,pt %xcc, __restore_asi
- add %o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_8)
-ENTRY(NG4_retl_o2_plus_o5_plus_16)
- add %o5, 16, %o5
- ba,pt %xcc, __restore_asi
- add %o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_16)
-ENTRY(NG4_retl_o2_plus_o5_plus_24)
- add %o5, 24, %o5
- ba,pt %xcc, __restore_asi
- add %o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_24)
-ENTRY(NG4_retl_o2_plus_o5_plus_32)
- add %o5, 32, %o5
- ba,pt %xcc, __restore_asi
- add %o2, %o5, %o0
-ENDPROC(NG4_retl_o2_plus_o5_plus_32)
-ENTRY(NG4_retl_o2_plus_g1)
- ba,pt %xcc, __restore_asi
- add %o2, %g1, %o0
-ENDPROC(NG4_retl_o2_plus_g1)
-ENTRY(NG4_retl_o2_plus_g1_plus_1)
- add %g1, 1, %g1
- ba,pt %xcc, __restore_asi
- add %o2, %g1, %o0
-ENDPROC(NG4_retl_o2_plus_g1_plus_1)
-ENTRY(NG4_retl_o2_plus_g1_plus_8)
- add %g1, 8, %g1
- ba,pt %xcc, __restore_asi
- add %o2, %g1, %o0
-ENDPROC(NG4_retl_o2_plus_g1_plus_8)
-ENTRY(NG4_retl_o2_plus_o4)
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4)
-ENTRY(NG4_retl_o2_plus_o4_plus_8)
- add %o4, 8, %o4
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_8)
-ENTRY(NG4_retl_o2_plus_o4_plus_16)
- add %o4, 16, %o4
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_16)
-ENTRY(NG4_retl_o2_plus_o4_plus_24)
- add %o4, 24, %o4
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_24)
-ENTRY(NG4_retl_o2_plus_o4_plus_32)
- add %o4, 32, %o4
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_32)
-ENTRY(NG4_retl_o2_plus_o4_plus_40)
- add %o4, 40, %o4
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_40)
-ENTRY(NG4_retl_o2_plus_o4_plus_48)
- add %o4, 48, %o4
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_48)
-ENTRY(NG4_retl_o2_plus_o4_plus_56)
- add %o4, 56, %o4
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_56)
-ENTRY(NG4_retl_o2_plus_o4_plus_64)
- add %o4, 64, %o4
- ba,pt %xcc, __restore_asi
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_64)
-ENTRY(NG4_retl_o2_plus_o4_fp)
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_8_fp)
- add %o4, 8, %o4
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_8_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_16_fp)
- add %o4, 16, %o4
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_16_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_24_fp)
- add %o4, 24, %o4
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_24_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_32_fp)
- add %o4, 32, %o4
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_32_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_40_fp)
- add %o4, 40, %o4
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_40_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_48_fp)
- add %o4, 48, %o4
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_48_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_56_fp)
- add %o4, 56, %o4
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_56_fp)
-ENTRY(NG4_retl_o2_plus_o4_plus_64_fp)
- add %o4, 64, %o4
- ba,pt %xcc, __restore_asi_fp
- add %o2, %o4, %o0
-ENDPROC(NG4_retl_o2_plus_o4_plus_64_fp)
#endif
.align 64
@@ -275,12 +126,12 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
sub %o2, %g1, %o2
-1: EX_LD(LOAD(ldub, %o1 + 0x00, %g2), NG4_retl_o2_plus_g1)
+1: EX_LD(LOAD(ldub, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
add %o1, 1, %o1
subcc %g1, 1, %g1
add %o0, 1, %o0
bne,pt %icc, 1b
- EX_ST(STORE(stb, %g2, %o0 - 0x01), NG4_retl_o2_plus_g1_plus_1)
+ EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
51: LOAD(prefetch, %o1 + 0x040, #n_reads_strong)
LOAD(prefetch, %o1 + 0x080, #n_reads_strong)
@@ -305,43 +156,43 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
brz,pt %g1, .Llarge_aligned
sub %o2, %g1, %o2
-1: EX_LD(LOAD(ldx, %o1 + 0x00, %g2), NG4_retl_o2_plus_g1)
+1: EX_LD(LOAD(ldx, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
add %o1, 8, %o1
subcc %g1, 8, %g1
add %o0, 8, %o0
bne,pt %icc, 1b
- EX_ST(STORE(stx, %g2, %o0 - 0x08), NG4_retl_o2_plus_g1_plus_8)
+ EX_ST(STORE(stx, %g2, %o0 - 0x08), memcpy_retl_o2_plus_g1_plus_8)
.Llarge_aligned:
/* len >= 0x80 && src 8-byte aligned && dest 8-byte aligned */
andn %o2, 0x3f, %o4
sub %o2, %o4, %o2
-1: EX_LD(LOAD(ldx, %o1 + 0x00, %g1), NG4_retl_o2_plus_o4)
+1: EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o4)
add %o1, 0x40, %o1
- EX_LD(LOAD(ldx, %o1 - 0x38, %g2), NG4_retl_o2_plus_o4)
+ EX_LD(LOAD(ldx, %o1 - 0x38, %g2), memcpy_retl_o2_plus_o4)
subcc %o4, 0x40, %o4
- EX_LD(LOAD(ldx, %o1 - 0x30, %g3), NG4_retl_o2_plus_o4_plus_64)
- EX_LD(LOAD(ldx, %o1 - 0x28, GLOBAL_SPARE), NG4_retl_o2_plus_o4_plus_64)
- EX_LD(LOAD(ldx, %o1 - 0x20, %o5), NG4_retl_o2_plus_o4_plus_64)
- EX_ST(STORE_INIT(%g1, %o0), NG4_retl_o2_plus_o4_plus_64)
+ EX_LD(LOAD(ldx, %o1 - 0x30, %g3), memcpy_retl_o2_plus_o4_plus_64)
+ EX_LD(LOAD(ldx, %o1 - 0x28, GLOBAL_SPARE), memcpy_retl_o2_plus_o4_plus_64)
+ EX_LD(LOAD(ldx, %o1 - 0x20, %o5), memcpy_retl_o2_plus_o4_plus_64)
+ EX_ST(STORE_INIT(%g1, %o0), memcpy_retl_o2_plus_o4_plus_64)
add %o0, 0x08, %o0
- EX_ST(STORE_INIT(%g2, %o0), NG4_retl_o2_plus_o4_plus_56)
+ EX_ST(STORE_INIT(%g2, %o0), memcpy_retl_o2_plus_o4_plus_56)
add %o0, 0x08, %o0
- EX_LD(LOAD(ldx, %o1 - 0x18, %g2), NG4_retl_o2_plus_o4_plus_48)
- EX_ST(STORE_INIT(%g3, %o0), NG4_retl_o2_plus_o4_plus_48)
+ EX_LD(LOAD(ldx, %o1 - 0x18, %g2), memcpy_retl_o2_plus_o4_plus_48)
+ EX_ST(STORE_INIT(%g3, %o0), memcpy_retl_o2_plus_o4_plus_48)
add %o0, 0x08, %o0
- EX_LD(LOAD(ldx, %o1 - 0x10, %g3), NG4_retl_o2_plus_o4_plus_40)
- EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), NG4_retl_o2_plus_o4_plus_40)
+ EX_LD(LOAD(ldx, %o1 - 0x10, %g3), memcpy_retl_o2_plus_o4_plus_40)
+ EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), memcpy_retl_o2_plus_o4_plus_40)
add %o0, 0x08, %o0
- EX_LD(LOAD(ldx, %o1 - 0x08, GLOBAL_SPARE), NG4_retl_o2_plus_o4_plus_32)
- EX_ST(STORE_INIT(%o5, %o0), NG4_retl_o2_plus_o4_plus_32)
+ EX_LD(LOAD(ldx, %o1 - 0x08, GLOBAL_SPARE), memcpy_retl_o2_plus_o4_plus_32)
+ EX_ST(STORE_INIT(%o5, %o0), memcpy_retl_o2_plus_o4_plus_32)
add %o0, 0x08, %o0
- EX_ST(STORE_INIT(%g2, %o0), NG4_retl_o2_plus_o4_plus_24)
+ EX_ST(STORE_INIT(%g2, %o0), memcpy_retl_o2_plus_o4_plus_24)
add %o0, 0x08, %o0
- EX_ST(STORE_INIT(%g3, %o0), NG4_retl_o2_plus_o4_plus_16)
+ EX_ST(STORE_INIT(%g3, %o0), memcpy_retl_o2_plus_o4_plus_16)
add %o0, 0x08, %o0
- EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), NG4_retl_o2_plus_o4_plus_8)
+ EX_ST(STORE_INIT(GLOBAL_SPARE, %o0), memcpy_retl_o2_plus_o4_plus_8)
add %o0, 0x08, %o0
bne,pt %icc, 1b
LOAD(prefetch, %o1 + 0x200, #n_reads_strong)
@@ -367,17 +218,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
sub %o2, %o4, %o2
alignaddr %o1, %g0, %g1
add %o1, %o4, %o1
- EX_LD_FP(LOAD(ldd, %g1 + 0x00, %f0), NG4_retl_o2_plus_o4)
-1: EX_LD_FP(LOAD(ldd, %g1 + 0x08, %f2), NG4_retl_o2_plus_o4)
+ EX_LD_FP(LOAD(ldd, %g1 + 0x00, %f0), memcpy_retl_o2_plus_o4)
+1: EX_LD_FP(LOAD(ldd, %g1 + 0x08, %f2), memcpy_retl_o2_plus_o4)
subcc %o4, 0x40, %o4
- EX_LD_FP(LOAD(ldd, %g1 + 0x10, %f4), NG4_retl_o2_plus_o4_plus_64)
- EX_LD_FP(LOAD(ldd, %g1 + 0x18, %f6), NG4_retl_o2_plus_o4_plus_64)
- EX_LD_FP(LOAD(ldd, %g1 + 0x20, %f8), NG4_retl_o2_plus_o4_plus_64)
- EX_LD_FP(LOAD(ldd, %g1 + 0x28, %f10), NG4_retl_o2_plus_o4_plus_64)
- EX_LD_FP(LOAD(ldd, %g1 + 0x30, %f12), NG4_retl_o2_plus_o4_plus_64)
- EX_LD_FP(LOAD(ldd, %g1 + 0x38, %f14), NG4_retl_o2_plus_o4_plus_64)
+ EX_LD_FP(LOAD(ldd, %g1 + 0x10, %f4), memcpy_retl_o2_plus_o4_plus_64)
+ EX_LD_FP(LOAD(ldd, %g1 + 0x18, %f6), memcpy_retl_o2_plus_o4_plus_64)
+ EX_LD_FP(LOAD(ldd, %g1 + 0x20, %f8), memcpy_retl_o2_plus_o4_plus_64)
+ EX_LD_FP(LOAD(ldd, %g1 + 0x28, %f10), memcpy_retl_o2_plus_o4_plus_64)
+ EX_LD_FP(LOAD(ldd, %g1 + 0x30, %f12), memcpy_retl_o2_plus_o4_plus_64)
+ EX_LD_FP(LOAD(ldd, %g1 + 0x38, %f14), memcpy_retl_o2_plus_o4_plus_64)
faligndata %f0, %f2, %f16
- EX_LD_FP(LOAD(ldd, %g1 + 0x40, %f0), NG4_retl_o2_plus_o4_plus_64)
+ EX_LD_FP(LOAD(ldd, %g1 + 0x40, %f0), memcpy_retl_o2_plus_o4_plus_64)
faligndata %f2, %f4, %f18
add %g1, 0x40, %g1
faligndata %f4, %f6, %f20
@@ -386,14 +237,14 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
faligndata %f10, %f12, %f26
faligndata %f12, %f14, %f28
faligndata %f14, %f0, %f30
- EX_ST_FP(STORE(std, %f16, %o0 + 0x00), NG4_retl_o2_plus_o4_plus_64)
- EX_ST_FP(STORE(std, %f18, %o0 + 0x08), NG4_retl_o2_plus_o4_plus_56)
- EX_ST_FP(STORE(std, %f20, %o0 + 0x10), NG4_retl_o2_plus_o4_plus_48)
- EX_ST_FP(STORE(std, %f22, %o0 + 0x18), NG4_retl_o2_plus_o4_plus_40)
- EX_ST_FP(STORE(std, %f24, %o0 + 0x20), NG4_retl_o2_plus_o4_plus_32)
- EX_ST_FP(STORE(std, %f26, %o0 + 0x28), NG4_retl_o2_plus_o4_plus_24)
- EX_ST_FP(STORE(std, %f28, %o0 + 0x30), NG4_retl_o2_plus_o4_plus_16)
- EX_ST_FP(STORE(std, %f30, %o0 + 0x38), NG4_retl_o2_plus_o4_plus_8)
+ EX_ST_FP(STORE(std, %f16, %o0 + 0x00), memcpy_retl_o2_plus_o4_plus_64)
+ EX_ST_FP(STORE(std, %f18, %o0 + 0x08), memcpy_retl_o2_plus_o4_plus_56)
+ EX_ST_FP(STORE(std, %f20, %o0 + 0x10), memcpy_retl_o2_plus_o4_plus_48)
+ EX_ST_FP(STORE(std, %f22, %o0 + 0x18), memcpy_retl_o2_plus_o4_plus_40)
+ EX_ST_FP(STORE(std, %f24, %o0 + 0x20), memcpy_retl_o2_plus_o4_plus_32)
+ EX_ST_FP(STORE(std, %f26, %o0 + 0x28), memcpy_retl_o2_plus_o4_plus_24)
+ EX_ST_FP(STORE(std, %f28, %o0 + 0x30), memcpy_retl_o2_plus_o4_plus_16)
+ EX_ST_FP(STORE(std, %f30, %o0 + 0x38), memcpy_retl_o2_plus_o4_plus_8)
add %o0, 0x40, %o0
bne,pt %icc, 1b
LOAD(prefetch, %g1 + 0x200, #n_reads_strong)
@@ -421,38 +272,38 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
andncc %o2, 0x20 - 1, %o5
be,pn %icc, 2f
sub %o2, %o5, %o2
-1: EX_LD(LOAD(ldx, %o1 + 0x00, %g1), NG4_retl_o2_plus_o5)
- EX_LD(LOAD(ldx, %o1 + 0x08, %g2), NG4_retl_o2_plus_o5)
- EX_LD(LOAD(ldx, %o1 + 0x10, GLOBAL_SPARE), NG4_retl_o2_plus_o5)
- EX_LD(LOAD(ldx, %o1 + 0x18, %o4), NG4_retl_o2_plus_o5)
+1: EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1 + 0x08, %g2), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1 + 0x10, GLOBAL_SPARE), memcpy_retl_o2_plus_o5)
+ EX_LD(LOAD(ldx, %o1 + 0x18, %o4), memcpy_retl_o2_plus_o5)
add %o1, 0x20, %o1
subcc %o5, 0x20, %o5
- EX_ST(STORE(stx, %g1, %o0 + 0x00), NG4_retl_o2_plus_o5_plus_32)
- EX_ST(STORE(stx, %g2, %o0 + 0x08), NG4_retl_o2_plus_o5_plus_24)
- EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x10), NG4_retl_o2_plus_o5_plus_24)
- EX_ST(STORE(stx, %o4, %o0 + 0x18), NG4_retl_o2_plus_o5_plus_8)
+ EX_ST(STORE(stx, %g1, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_32)
+ EX_ST(STORE(stx, %g2, %o0 + 0x08), memcpy_retl_o2_plus_o5_plus_24)
+ EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x10), memcpy_retl_o2_plus_o5_plus_24)
+ EX_ST(STORE(stx, %o4, %o0 + 0x18), memcpy_retl_o2_plus_o5_plus_8)
bne,pt %icc, 1b
add %o0, 0x20, %o0
2: andcc %o2, 0x18, %o5
be,pt %icc, 3f
sub %o2, %o5, %o2
-1: EX_LD(LOAD(ldx, %o1 + 0x00, %g1), NG4_retl_o2_plus_o5)
+1: EX_LD(LOAD(ldx, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
add %o1, 0x08, %o1
add %o0, 0x08, %o0
subcc %o5, 0x08, %o5
bne,pt %icc, 1b
- EX_ST(STORE(stx, %g1, %o0 - 0x08), NG4_retl_o2_plus_o5_plus_8)
+ EX_ST(STORE(stx, %g1, %o0 - 0x08), memcpy_retl_o2_plus_o5_plus_8)
3: brz,pt %o2, .Lexit
cmp %o2, 0x04
bl,pn %icc, .Ltiny
nop
- EX_LD(LOAD(lduw, %o1 + 0x00, %g1), NG4_retl_o2)
+ EX_LD(LOAD(lduw, %o1 + 0x00, %g1), memcpy_retl_o2)
add %o1, 0x04, %o1
add %o0, 0x04, %o0
subcc %o2, 0x04, %o2
bne,pn %icc, .Ltiny
- EX_ST(STORE(stw, %g1, %o0 - 0x04), NG4_retl_o2_plus_4)
+ EX_ST(STORE(stw, %g1, %o0 - 0x04), memcpy_retl_o2_plus_4)
ba,a,pt %icc, .Lexit
.Lmedium_unaligned:
/* First get dest 8 byte aligned. */
@@ -461,12 +312,12 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
brz,pt %g1, 2f
sub %o2, %g1, %o2
-1: EX_LD(LOAD(ldub, %o1 + 0x00, %g2), NG4_retl_o2_plus_g1)
+1: EX_LD(LOAD(ldub, %o1 + 0x00, %g2), memcpy_retl_o2_plus_g1)
add %o1, 1, %o1
subcc %g1, 1, %g1
add %o0, 1, %o0
bne,pt %icc, 1b
- EX_ST(STORE(stb, %g2, %o0 - 0x01), NG4_retl_o2_plus_g1_plus_1)
+ EX_ST(STORE(stb, %g2, %o0 - 0x01), memcpy_retl_o2_plus_g1_plus_1)
2:
and %o1, 0x7, %g1
brz,pn %g1, .Lmedium_noprefetch
@@ -474,16 +325,16 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
mov 64, %g2
sub %g2, %g1, %g2
andn %o1, 0x7, %o1
- EX_LD(LOAD(ldx, %o1 + 0x00, %o4), NG4_retl_o2)
+ EX_LD(LOAD(ldx, %o1 + 0x00, %o4), memcpy_retl_o2)
sllx %o4, %g1, %o4
andn %o2, 0x08 - 1, %o5
sub %o2, %o5, %o2
-1: EX_LD(LOAD(ldx, %o1 + 0x08, %g3), NG4_retl_o2_plus_o5)
+1: EX_LD(LOAD(ldx, %o1 + 0x08, %g3), memcpy_retl_o2_plus_o5)
add %o1, 0x08, %o1
subcc %o5, 0x08, %o5
srlx %g3, %g2, GLOBAL_SPARE
or GLOBAL_SPARE, %o4, GLOBAL_SPARE
- EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x00), NG4_retl_o2_plus_o5_plus_8)
+ EX_ST(STORE(stx, GLOBAL_SPARE, %o0 + 0x00), memcpy_retl_o2_plus_o5_plus_8)
add %o0, 0x08, %o0
bne,pt %icc, 1b
sllx %g3, %g1, %o4
@@ -494,17 +345,17 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
ba,pt %icc, .Lsmall_unaligned
.Ltiny:
- EX_LD(LOAD(ldub, %o1 + 0x00, %g1), NG4_retl_o2)
+ EX_LD(LOAD(ldub, %o1 + 0x00, %g1), memcpy_retl_o2)
subcc %o2, 1, %o2
be,pn %icc, .Lexit
- EX_ST(STORE(stb, %g1, %o0 + 0x00), NG4_retl_o2_plus_1)
- EX_LD(LOAD(ldub, %o1 + 0x01, %g1), NG4_retl_o2)
+ EX_ST(STORE(stb, %g1, %o0 + 0x00), memcpy_retl_o2_plus_1)
+ EX_LD(LOAD(ldub, %o1 + 0x01, %g1), memcpy_retl_o2)
subcc %o2, 1, %o2
be,pn %icc, .Lexit
- EX_ST(STORE(stb, %g1, %o0 + 0x01), NG4_retl_o2_plus_1)
- EX_LD(LOAD(ldub, %o1 + 0x02, %g1), NG4_retl_o2)
+ EX_ST(STORE(stb, %g1, %o0 + 0x01), memcpy_retl_o2_plus_1)
+ EX_LD(LOAD(ldub, %o1 + 0x02, %g1), memcpy_retl_o2)
ba,pt %icc, .Lexit
- EX_ST(STORE(stb, %g1, %o0 + 0x02), NG4_retl_o2)
+ EX_ST(STORE(stb, %g1, %o0 + 0x02), memcpy_retl_o2)
.Lsmall:
andcc %g2, 0x3, %g0
@@ -512,23 +363,23 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
andn %o2, 0x4 - 1, %o5
sub %o2, %o5, %o2
1:
- EX_LD(LOAD(lduw, %o1 + 0x00, %g1), NG4_retl_o2_plus_o5)
+ EX_LD(LOAD(lduw, %o1 + 0x00, %g1), memcpy_retl_o2_plus_o5)
add %o1, 0x04, %o1
subcc %o5, 0x04, %o5
add %o0, 0x04, %o0
bne,pt %icc, 1b
- EX_ST(STORE(stw, %g1, %o0 - 0x04), NG4_retl_o2_plus_o5_plus_4)
+ EX_ST(STORE(stw, %g1, %o0 - 0x04), memcpy_retl_o2_plus_o5_plus_4)
brz,pt %o2, .Lexit
nop
ba,a,pt %icc, .Ltiny
.Lsmall_unaligned:
-1: EX_LD(LOAD(ldub, %o1 + 0x00, %g1), NG4_retl_o2)
+1: EX_LD(LOAD(ldub, %o1 + 0x00, %g1), memcpy_retl_o2)
add %o1, 1, %o1
add %o0, 1, %o0
subcc %o2, 1, %o2
bne,pt %icc, 1b
- EX_ST(STORE(stb, %g1, %o0 - 0x01), NG4_retl_o2_plus_1)
+ EX_ST(STORE(stb, %g1, %o0 - 0x01), memcpy_retl_o2_plus_1)
ba,a,pt %icc, .Lexit
nop
.size FUNC_NAME, .-FUNC_NAME
diff --git a/arch/sparc/lib/U3memcpy.S b/arch/sparc/lib/U3memcpy.S
index 5a8cb37f0a3b..f9b42b3c63b0 100644
--- a/arch/sparc/lib/U3memcpy.S
+++ b/arch/sparc/lib/U3memcpy.S
@@ -168,18 +168,25 @@ ENDPROC(U3_retl_o2_and_7_plus_GS_plus_8)
FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
srlx %o2, 31, %g2
cmp %g2, 0
+
+ /* software trap 5 "Range Check" if dst >= 0x80000000 */
tne %xcc, 5
PREAMBLE
mov %o0, %o4
+
+ /* if len == 0 */
cmp %o2, 0
- be,pn %XCC, 85f
+ be,pn %XCC, end_return
or %o0, %o1, %o3
+
+ /* if len < 16 */
cmp %o2, 16
- blu,a,pn %XCC, 80f
+ blu,a,pn %XCC, less_than_16
or %o3, %o2, %o3
+ /* if len < 192 */
cmp %o2, (3 * 64)
- blu,pt %XCC, 70f
+ blu,pt %XCC, less_than_192
andcc %o3, 0x7, %g0
/* Clobbers o5/g1/g2/g3/g7/icc/xcc. We must preserve
@@ -362,7 +369,7 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
cmp %o2, 0
add %o1, %g1, %o1
VISExitHalf
- be,pn %XCC, 85f
+ be,pn %XCC, end_return
sub %o0, %o1, %o3
andcc %g1, 0x7, %g0
@@ -392,14 +399,15 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
sub %o2, 2, %o2
1: andcc %o2, 0x1, %g0
- be,pt %icc, 85f
+ be,pt %icc, end_return
nop
EX_LD(LOAD(ldub, %o1, %o5), U3_retl_o2)
- ba,pt %xcc, 85f
+ ba,pt %xcc, end_return
EX_ST(STORE(stb, %o5, %o1 + %o3), U3_retl_o2)
.align 64
-70: /* 16 < len <= 64 */
+ /* 16 <= len < 192 */
+less_than_192:
bne,pn %XCC, 75f
sub %o0, %o1, %o3
@@ -429,7 +437,7 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
EX_ST(STORE(stw, %o5, %o1 + %o3), U3_retl_o2_plus_4)
add %o1, 0x4, %o1
1: cmp %o2, 0
- be,pt %XCC, 85f
+ be,pt %XCC, end_return
nop
ba,pt %xcc, 90f
nop
@@ -475,13 +483,14 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
srl %g1, 3, %g1
andcc %o2, 0x7, %o2
- be,pn %icc, 85f
+ be,pn %icc, end_return
add %o1, %g1, %o1
ba,pt %xcc, 90f
sub %o0, %o1, %o3
.align 64
-80: /* 0 < len <= 16 */
+ /* 0 < len < 16 */
+less_than_16:
andcc %o3, 0x3, %g0
bne,pn %XCC, 90f
sub %o0, %o1, %o3
@@ -493,7 +502,8 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
bgu,pt %XCC, 1b
add %o1, 4, %o1
-85: retl
+end_return:
+ retl
mov EX_RETVAL(%o4), %o0
.align 32
diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c
index f80cfc64c55b..d809099ffd47 100644
--- a/arch/sparc/mm/gup.c
+++ b/arch/sparc/mm/gup.c
@@ -103,6 +103,45 @@ static int gup_huge_pmd(pmd_t *pmdp, pmd_t pmd, unsigned long addr,
return 1;
}
+static int gup_huge_pud(pud_t *pudp, pud_t pud, unsigned long addr,
+ unsigned long end, int write, struct page **pages,
+ int *nr)
+{
+ struct page *head, *page;
+ int refs;
+
+ if (!(pud_val(pud) & _PAGE_VALID))
+ return 0;
+
+ if (write && !pud_write(pud))
+ return 0;
+
+ refs = 0;
+ page = pud_page(pud) + ((addr & ~PUD_MASK) >> PAGE_SHIFT);
+ head = compound_head(page);
+ do {
+ VM_BUG_ON(compound_head(page) != head);
+ pages[*nr] = page;
+ (*nr)++;
+ page++;
+ refs++;
+ } while (addr += PAGE_SIZE, addr != end);
+
+ if (!page_cache_add_speculative(head, refs)) {
+ *nr -= refs;
+ return 0;
+ }
+
+ if (unlikely(pud_val(pud) != pud_val(*pudp))) {
+ *nr -= refs;
+ while (refs--)
+ put_page(head);
+ return 0;
+ }
+
+ return 1;
+}
+
static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end,
int write, struct page **pages, int *nr)
{
@@ -141,7 +180,11 @@ static int gup_pud_range(pgd_t pgd, unsigned long addr, unsigned long end,
next = pud_addr_end(addr, end);
if (pud_none(pud))
return 0;
- if (!gup_pmd_range(pud, addr, next, write, pages, nr))
+ if (unlikely(pud_large(pud))) {
+ if (!gup_huge_pud(pudp, pud, addr, next,
+ write, pages, nr))
+ return 0;
+ } else if (!gup_pmd_range(pud, addr, next, write, pages, nr))
return 0;
} while (pudp++, addr = next, addr != end);
diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index 28ee8d8ffa07..bcd8cdbc377f 100644
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -143,6 +143,10 @@ static pte_t sun4v_hugepage_shift_to_tte(pte_t entry, unsigned int shift)
pte_val(entry) = pte_val(entry) & ~_PAGE_SZALL_4V;
switch (shift) {
+ case HPAGE_16GB_SHIFT:
+ hugepage_size = _PAGE_SZ16GB_4V;
+ pte_val(entry) |= _PAGE_PUD_HUGE;
+ break;
case HPAGE_2GB_SHIFT:
hugepage_size = _PAGE_SZ2GB_4V;
pte_val(entry) |= _PAGE_PMD_HUGE;
@@ -187,6 +191,9 @@ static unsigned int sun4v_huge_tte_to_shift(pte_t entry)
unsigned int shift;
switch (tte_szbits) {
+ case _PAGE_SZ16GB_4V:
+ shift = HPAGE_16GB_SHIFT;
+ break;
case _PAGE_SZ2GB_4V:
shift = HPAGE_2GB_SHIFT;
break;
@@ -259,22 +266,19 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
- pte_t *pte = NULL;
pgd = pgd_offset(mm, addr);
pud = pud_alloc(mm, pgd, addr);
- if (pud) {
- pmd = pmd_alloc(mm, pud, addr);
- if (!pmd)
- return NULL;
-
- if (sz >= PMD_SIZE)
- pte = (pte_t *)pmd;
- else
- pte = pte_alloc_map(mm, pmd, addr);
- }
-
- return pte;
+ if (!pud)
+ return NULL;
+ if (sz >= PUD_SIZE)
+ return (pte_t *)pud;
+ pmd = pmd_alloc(mm, pud, addr);
+ if (!pmd)
+ return NULL;
+ if (sz >= PMD_SIZE)
+ return (pte_t *)pmd;
+ return pte_alloc_map(mm, pmd, addr);
}
pte_t *huge_pte_offset(struct mm_struct *mm,
@@ -283,34 +287,40 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
- pte_t *pte = NULL;
pgd = pgd_offset(mm, addr);
- if (!pgd_none(*pgd)) {
- pud = pud_offset(pgd, addr);
- if (!pud_none(*pud)) {
- pmd = pmd_offset(pud, addr);
- if (!pmd_none(*pmd)) {
- if (is_hugetlb_pmd(*pmd))
- pte = (pte_t *)pmd;
- else
- pte = pte_offset_map(pmd, addr);
- }
- }
- }
-
- return pte;
+ if (pgd_none(*pgd))
+ return NULL;
+ pud = pud_offset(pgd, addr);
+ if (pud_none(*pud))
+ return NULL;
+ if (is_hugetlb_pud(*pud))
+ return (pte_t *)pud;
+ pmd = pmd_offset(pud, addr);
+ if (pmd_none(*pmd))
+ return NULL;
+ if (is_hugetlb_pmd(*pmd))
+ return (pte_t *)pmd;
+ return pte_offset_map(pmd, addr);
}
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t entry)
{
- unsigned int i, nptes, orig_shift, shift;
- unsigned long size;
+ unsigned int nptes, orig_shift, shift;
+ unsigned long i, size;
pte_t orig;
size = huge_tte_to_size(entry);
- shift = size >= HPAGE_SIZE ? PMD_SHIFT : PAGE_SHIFT;
+
+ shift = PAGE_SHIFT;
+ if (size >= PUD_SIZE)
+ shift = PUD_SHIFT;
+ else if (size >= PMD_SIZE)
+ shift = PMD_SHIFT;
+ else
+ shift = PAGE_SHIFT;
+
nptes = size >> shift;
if (!pte_present(*ptep) && pte_present(entry))
@@ -333,19 +343,23 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
- unsigned int i, nptes, hugepage_shift;
+ unsigned int i, nptes, orig_shift, shift;
unsigned long size;
pte_t entry;
entry = *ptep;
size = huge_tte_to_size(entry);
- if (size >= HPAGE_SIZE)
- nptes = size >> PMD_SHIFT;
+
+ shift = PAGE_SHIFT;
+ if (size >= PUD_SIZE)
+ shift = PUD_SHIFT;
+ else if (size >= PMD_SIZE)
+ shift = PMD_SHIFT;
else
- nptes = size >> PAGE_SHIFT;
+ shift = PAGE_SHIFT;
- hugepage_shift = pte_none(entry) ? PAGE_SHIFT :
- huge_tte_to_shift(entry);
+ nptes = size >> shift;
+ orig_shift = pte_none(entry) ? PAGE_SHIFT : huge_tte_to_shift(entry);
if (pte_present(entry))
mm->context.hugetlb_pte_count -= nptes;
@@ -354,11 +368,11 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
for (i = 0; i < nptes; i++)
ptep[i] = __pte(0UL);
- maybe_tlb_batch_add(mm, addr, ptep, entry, 0, hugepage_shift);
+ maybe_tlb_batch_add(mm, addr, ptep, entry, 0, orig_shift);
/* An HPAGE_SIZE'ed page is composed of two REAL_HPAGE_SIZE'ed pages */
if (size == HPAGE_SIZE)
maybe_tlb_batch_add(mm, addr + REAL_HPAGE_SIZE, ptep, entry, 0,
- hugepage_shift);
+ orig_shift);
return entry;
}
@@ -371,7 +385,8 @@ int pmd_huge(pmd_t pmd)
int pud_huge(pud_t pud)
{
- return 0;
+ return !pud_none(pud) &&
+ (pud_val(pud) & (_PAGE_VALID|_PAGE_PUD_HUGE)) != _PAGE_VALID;
}
static void hugetlb_free_pte_range(struct mmu_gather *tlb, pmd_t *pmd,
@@ -435,8 +450,11 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
next = pud_addr_end(addr, end);
if (pud_none_or_clear_bad(pud))
continue;
- hugetlb_free_pmd_range(tlb, pud, addr, next, floor,
- ceiling);
+ if (is_hugetlb_pud(*pud))
+ pud_clear(pud);
+ else
+ hugetlb_free_pmd_range(tlb, pud, addr, next, floor,
+ ceiling);
} while (pud++, addr = next, addr != end);
start &= PGDIR_MASK;
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index afa0099f3748..b2ba410b26f4 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -348,6 +348,18 @@ static int __init hugetlbpage_init(void)
arch_initcall(hugetlbpage_init);
+static void __init pud_huge_patch(void)
+{
+ struct pud_huge_patch_entry *p;
+ unsigned long addr;
+
+ p = &__pud_huge_patch;
+ addr = p->addr;
+ *(unsigned int *)addr = p->insn;
+
+ __asm__ __volatile__("flush %0" : : "r" (addr));
+}
+
static int __init setup_hugepagesz(char *string)
{
unsigned long long hugepage_size;
@@ -360,6 +372,11 @@ static int __init setup_hugepagesz(char *string)
hugepage_shift = ilog2(hugepage_size);
switch (hugepage_shift) {
+ case HPAGE_16GB_SHIFT:
+ hv_pgsz_mask = HV_PGSZ_MASK_16GB;
+ hv_pgsz_idx = HV_PGSZ_IDX_16GB;
+ pud_huge_patch();
+ break;
case HPAGE_2GB_SHIFT:
hv_pgsz_mask = HV_PGSZ_MASK_2GB;
hv_pgsz_idx = HV_PGSZ_IDX_2GB;
@@ -400,6 +417,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *
{
struct mm_struct *mm;
unsigned long flags;
+ bool is_huge_tsb;
pte_t pte = *ptep;
if (tlb_type != hypervisor) {
@@ -417,15 +435,37 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *
spin_lock_irqsave(&mm->context.lock, flags);
+ is_huge_tsb = false;
#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
- if ((mm->context.hugetlb_pte_count || mm->context.thp_pte_count) &&
- is_hugetlb_pmd(__pmd(pte_val(pte)))) {
- /* We are fabricating 8MB pages using 4MB real hw pages. */
- pte_val(pte) |= (address & (1UL << REAL_HPAGE_SHIFT));
- __update_mmu_tsb_insert(mm, MM_TSB_HUGE, REAL_HPAGE_SHIFT,
- address, pte_val(pte));
- } else
+ if (mm->context.hugetlb_pte_count || mm->context.thp_pte_count) {
+ unsigned long hugepage_size = PAGE_SIZE;
+
+ if (is_vm_hugetlb_page(vma))
+ hugepage_size = huge_page_size(hstate_vma(vma));
+
+ if (hugepage_size >= PUD_SIZE) {
+ unsigned long mask = 0x1ffc00000UL;
+
+ /* Transfer bits [32:22] from address to resolve
+ * at 4M granularity.
+ */
+ pte_val(pte) &= ~mask;
+ pte_val(pte) |= (address & mask);
+ } else if (hugepage_size >= PMD_SIZE) {
+ /* We are fabricating 8MB pages using 4MB
+ * real hw pages.
+ */
+ pte_val(pte) |= (address & (1UL << REAL_HPAGE_SHIFT));
+ }
+
+ if (hugepage_size >= PMD_SIZE) {
+ __update_mmu_tsb_insert(mm, MM_TSB_HUGE,
+ REAL_HPAGE_SHIFT, address, pte_val(pte));
+ is_huge_tsb = true;
+ }
+ }
#endif
+ if (!is_huge_tsb)
__update_mmu_tsb_insert(mm, MM_TSB_BASE, PAGE_SHIFT,
address, pte_val(pte));
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 873e0ba89737..cc2b4d9433ed 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -458,4 +458,9 @@ config MIPS_EJTAG_FDC_KGDB_CHAN
help
FDC channel number to use for KGDB.
+config VCC
+ tristate "Sun Virtual Console Concentrator"
+ depends on SUN_LDOMS
+ help
+ Support for Sun logical domain consoles.
endif # TTY
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 8689279afdf1..16330a819685 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -33,5 +33,6 @@ obj-$(CONFIG_PPC_EPAPR_HV_BYTECHAN) += ehv_bytechan.o
obj-$(CONFIG_GOLDFISH_TTY) += goldfish.o
obj-$(CONFIG_DA_TTY) += metag_da.o
obj-$(CONFIG_MIPS_EJTAG_FDC_TTY) += mips_ejtag_fdc.o
+obj-$(CONFIG_VCC) += vcc.o
obj-y += ipwireless/
diff --git a/drivers/tty/vcc.c b/drivers/tty/vcc.c
new file mode 100644
index 000000000000..ef01d24858cd
--- /dev/null
+++ b/drivers/tty/vcc.c
@@ -0,0 +1,1155 @@
+/* vcc.c: sun4v virtual channel concentrator
+ *
+ * Copyright (C) 2017 Oracle. All rights reserved.
+ */
+
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <asm/vio.h>
+#include <asm/ldc.h>
+
+#define DRV_MODULE_NAME "vcc"
+#define DRV_MODULE_VERSION "1.1"
+#define DRV_MODULE_RELDATE "July 1, 2017"
+
+static char version[] =
+ DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")";
+
+MODULE_DESCRIPTION("Sun LDOM virtual console concentrator driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+struct vcc_port {
+ struct vio_driver_state vio;
+
+ spinlock_t lock;
+ char *domain;
+ struct tty_struct *tty; /* only populated while dev is open */
+ unsigned long index; /* index into the vcc_table */
+
+ u64 refcnt;
+ bool excl_locked;
+
+ bool removed;
+
+ /* This buffer is required to support the tty write_room interface
+ * and guarantee that any characters that the driver accepts will
+ * be eventually sent, either immediately or later.
+ */
+ int chars_in_buffer;
+ struct vio_vcc buffer;
+
+ struct timer_list rx_timer;
+ struct timer_list tx_timer;
+};
+
+/* Microseconds that thread will delay waiting for a vcc port ref */
+#define VCC_REF_DELAY 100
+
+#define VCC_MAX_PORTS 1024
+#define VCC_MINOR_START 0 /* must be zero */
+#define VCC_BUFF_LEN VIO_VCC_MTU_SIZE
+
+#define VCC_CTL_BREAK -1
+#define VCC_CTL_HUP -2
+
+static const char vcc_driver_name[] = "vcc";
+static const char vcc_device_node[] = "vcc";
+static struct tty_driver *vcc_tty_driver;
+
+static struct vcc_port *vcc_table[VCC_MAX_PORTS];
+static DEFINE_SPINLOCK(vcc_table_lock);
+
+int vcc_dbg;
+int vcc_dbg_ldc;
+int vcc_dbg_vio;
+
+module_param(vcc_dbg, uint, 0664);
+module_param(vcc_dbg_ldc, uint, 0664);
+module_param(vcc_dbg_vio, uint, 0664);
+
+#define VCC_DBG_DRV 0x1
+#define VCC_DBG_LDC 0x2
+#define VCC_DBG_PKT 0x4
+
+#define vccdbg(f, a...) \
+ do { \
+ if (vcc_dbg & VCC_DBG_DRV) \
+ pr_info(f, ## a); \
+ } while (0) \
+
+#define vccdbgl(l) \
+ do { \
+ if (vcc_dbg & VCC_DBG_LDC) \
+ ldc_print(l); \
+ } while (0) \
+
+#define vccdbgp(pkt) \
+ do { \
+ if (vcc_dbg & VCC_DBG_PKT) { \
+ int i; \
+ for (i = 0; i < pkt.tag.stype; i++) \
+ pr_info("[%c]", pkt.data[i]); \
+ } \
+ } while (0) \
+
+/* Note: Be careful when adding flags to this line discipline. Don't
+ * add anything that will cause echoing or we'll go into recursive
+ * loop echoing chars back and forth with the console drivers.
+ */
+static const struct ktermios vcc_tty_termios = {
+ .c_iflag = IGNBRK | IGNPAR,
+ .c_oflag = OPOST,
+ .c_cflag = B38400 | CS8 | CREAD | HUPCL,
+ .c_cc = INIT_C_CC,
+ .c_ispeed = 38400,
+ .c_ospeed = 38400
+};
+
+/**
+ * vcc_table_add() - Add VCC port to the VCC table
+ * @port: pointer to the VCC port
+ *
+ * Return: index of the port in the VCC table on success,
+ * -1 on failure
+ */
+static int vcc_table_add(struct vcc_port *port)
+{
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&vcc_table_lock, flags);
+ for (i = VCC_MINOR_START; i < VCC_MAX_PORTS; i++) {
+ if (!vcc_table[i]) {
+ vcc_table[i] = port;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&vcc_table_lock, flags);
+
+ if (i < VCC_MAX_PORTS)
+ return i;
+ else
+ return -1;
+}
+
+/**
+ * vcc_table_remove() - Removes a VCC port from the VCC table
+ * @index: Index into the VCC table
+ */
+static void vcc_table_remove(unsigned long index)
+{
+ unsigned long flags;
+
+ if (WARN_ON(index >= VCC_MAX_PORTS))
+ return;
+
+ spin_lock_irqsave(&vcc_table_lock, flags);
+ vcc_table[index] = NULL;
+ spin_unlock_irqrestore(&vcc_table_lock, flags);
+}
+
+/**
+ * vcc_get() - Gets a reference to VCC port
+ * @index: Index into the VCC table
+ * @excl: Indicates if an exclusive access is requested
+ *
+ * Return: reference to the VCC port, if found
+ * NULL, if port not found
+ */
+static struct vcc_port *vcc_get(unsigned long index, bool excl)
+{
+ struct vcc_port *port;
+ unsigned long flags;
+
+try_again:
+ spin_lock_irqsave(&vcc_table_lock, flags);
+
+ port = vcc_table[index];
+ if (!port) {
+ spin_unlock_irqrestore(&vcc_table_lock, flags);
+ return NULL;
+ }
+
+ if (!excl) {
+ if (port->excl_locked) {
+ spin_unlock_irqrestore(&vcc_table_lock, flags);
+ udelay(VCC_REF_DELAY);
+ goto try_again;
+ }
+ port->refcnt++;
+ spin_unlock_irqrestore(&vcc_table_lock, flags);
+ return port;
+ }
+
+ if (port->refcnt) {
+ spin_unlock_irqrestore(&vcc_table_lock, flags);
+ /* Threads wanting exclusive access will wait half the time,
+ * probably giving them higher priority in the case of
+ * multiple waiters.
+ */
+ udelay(VCC_REF_DELAY/2);
+ goto try_again;
+ }
+
+ port->refcnt++;
+ port->excl_locked = true;
+ spin_unlock_irqrestore(&vcc_table_lock, flags);
+
+ return port;
+}
+
+/**
+ * vcc_put() - Returns a reference to VCC port
+ * @port: pointer to VCC port
+ * @excl: Indicates if the returned reference is an exclusive reference
+ *
+ * Note: It's the caller's responsibility to ensure the correct value
+ * for the excl flag
+ */
+static void vcc_put(struct vcc_port *port, bool excl)
+{
+ unsigned long flags;
+
+ if (!port)
+ return;
+
+ spin_lock_irqsave(&vcc_table_lock, flags);
+
+ /* check if caller attempted to put with the wrong flags */
+ if (WARN_ON((excl && !port->excl_locked) ||
+ (!excl && port->excl_locked)))
+ goto done;
+
+ port->refcnt--;
+
+ if (excl)
+ port->excl_locked = false;
+
+done:
+ spin_unlock_irqrestore(&vcc_table_lock, flags);
+}
+
+/**
+ * vcc_get_ne() - Get a non-exclusive reference to VCC port
+ * @index: Index into the VCC table
+ *
+ * Gets a non-exclusive reference to VCC port, if it's not removed
+ *
+ * Return: pointer to the VCC port, if found
+ * NULL, if port not found
+ */
+static struct vcc_port *vcc_get_ne(unsigned long index)
+{
+ struct vcc_port *port;
+
+ port = vcc_get(index, false);
+
+ if (port && port->removed) {
+ vcc_put(port, false);
+ return NULL;
+ }
+
+ return port;
+}
+
+static void vcc_kick_rx(struct vcc_port *port)
+{
+ struct vio_driver_state *vio = &port->vio;
+
+ assert_spin_locked(&port->lock);
+
+ if (!timer_pending(&port->rx_timer) && !port->removed) {
+ disable_irq_nosync(vio->vdev->rx_irq);
+ port->rx_timer.expires = (jiffies + 1);
+ add_timer(&port->rx_timer);
+ }
+}
+
+static void vcc_kick_tx(struct vcc_port *port)
+{
+ assert_spin_locked(&port->lock);
+
+ if (!timer_pending(&port->tx_timer) && !port->removed) {
+ port->tx_timer.expires = (jiffies + 1);
+ add_timer(&port->tx_timer);
+ }
+}
+
+static int vcc_rx_check(struct tty_struct *tty, int size)
+{
+ if (WARN_ON(!tty || !tty->port))
+ return 1;
+
+ /* tty_buffer_request_room won't sleep because it uses
+ * GFP_ATOMIC flag to allocate buffer
+ */
+ if (test_bit(TTY_THROTTLED, &tty->flags) ||
+ (tty_buffer_request_room(tty->port, VCC_BUFF_LEN) < VCC_BUFF_LEN))
+ return 0;
+
+ return 1;
+}
+
+static int vcc_rx(struct tty_struct *tty, char *buf, int size)
+{
+ int len = 0;
+
+ if (WARN_ON(!tty || !tty->port))
+ return len;
+
+ len = tty_insert_flip_string(tty->port, buf, size);
+ if (len)
+ tty_flip_buffer_push(tty->port);
+
+ return len;
+}
+
+static int vcc_ldc_read(struct vcc_port *port)
+{
+ struct vio_driver_state *vio = &port->vio;
+ struct tty_struct *tty;
+ struct vio_vcc pkt;
+ int rv = 0;
+
+ tty = port->tty;
+ if (!tty) {
+ rv = ldc_rx_reset(vio->lp);
+ vccdbg("VCC: reset rx q: rv=%d\n", rv);
+ goto done;
+ }
+
+ /* Read as long as LDC has incoming data. */
+ while (1) {
+ if (!vcc_rx_check(tty, VIO_VCC_MTU_SIZE)) {
+ vcc_kick_rx(port);
+ break;
+ }
+
+ vccdbgl(vio->lp);
+
+ rv = ldc_read(vio->lp, &pkt, sizeof(pkt));
+ if (rv <= 0)
+ break;
+
+ vccdbg("VCC: ldc_read()=%d\n", rv);
+ vccdbg("TAG [%02x:%02x:%04x:%08x]\n",
+ pkt.tag.type, pkt.tag.stype,
+ pkt.tag.stype_env, pkt.tag.sid);
+
+ if (pkt.tag.type == VIO_TYPE_DATA) {
+ vccdbgp(pkt);
+ /* vcc_rx_check ensures memory availability */
+ vcc_rx(tty, pkt.data, pkt.tag.stype);
+ } else {
+ pr_err("VCC: unknown msg [%02x:%02x:%04x:%08x]\n",
+ pkt.tag.type, pkt.tag.stype,
+ pkt.tag.stype_env, pkt.tag.sid);
+ rv = -ECONNRESET;
+ break;
+ }
+
+ WARN_ON(rv != LDC_PACKET_SIZE);
+ }
+
+done:
+ return rv;
+}
+
+static void vcc_rx_timer(unsigned long index)
+{
+ struct vio_driver_state *vio;
+ struct vcc_port *port;
+ unsigned long flags;
+ int rv;
+
+ port = vcc_get_ne(index);
+ if (!port)
+ return;
+
+ spin_lock_irqsave(&port->lock, flags);
+ port->rx_timer.expires = 0;
+
+ vio = &port->vio;
+
+ enable_irq(vio->vdev->rx_irq);
+
+ if (!port->tty || port->removed)
+ goto done;
+
+ rv = vcc_ldc_read(port);
+ if (rv == -ECONNRESET)
+ vio_conn_reset(vio);
+
+done:
+ spin_unlock_irqrestore(&port->lock, flags);
+ vcc_put(port, false);
+}
+
+static void vcc_tx_timer(unsigned long index)
+{
+ struct vcc_port *port;
+ struct vio_vcc *pkt;
+ unsigned long flags;
+ int tosend = 0;
+ int rv;
+
+ port = vcc_get_ne(index);
+ if (!port)
+ return;
+
+ spin_lock_irqsave(&port->lock, flags);
+ port->tx_timer.expires = 0;
+
+ if (!port->tty || port->removed)
+ goto done;
+
+ tosend = min(VCC_BUFF_LEN, port->chars_in_buffer);
+ if (!tosend)
+ goto done;
+
+ pkt = &port->buffer;
+ pkt->tag.type = VIO_TYPE_DATA;
+ pkt->tag.stype = tosend;
+ vccdbgl(port->vio.lp);
+
+ rv = ldc_write(port->vio.lp, pkt, (VIO_TAG_SIZE + tosend));
+ WARN_ON(!rv);
+
+ if (rv < 0) {
+ vccdbg("VCC: ldc_write()=%d\n", rv);
+ vcc_kick_tx(port);
+ } else {
+ struct tty_struct *tty = port->tty;
+
+ port->chars_in_buffer = 0;
+ if (tty)
+ tty_wakeup(tty);
+ }
+
+done:
+ spin_unlock_irqrestore(&port->lock, flags);
+ vcc_put(port, false);
+}
+
+/**
+ * vcc_event() - LDC event processing engine
+ * @arg: VCC private data
+ * @event: LDC event
+ *
+ * Handles LDC events for VCC
+ */
+static void vcc_event(void *arg, int event)
+{
+ struct vio_driver_state *vio;
+ struct vcc_port *port;
+ unsigned long flags;
+ int rv;
+
+ port = arg;
+ vio = &port->vio;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ switch (event) {
+ case LDC_EVENT_RESET:
+ case LDC_EVENT_UP:
+ vio_link_state_change(vio, event);
+ break;
+
+ case LDC_EVENT_DATA_READY:
+ rv = vcc_ldc_read(port);
+ if (rv == -ECONNRESET)
+ vio_conn_reset(vio);
+ break;
+
+ default:
+ pr_err("VCC: unexpected LDC event(%d)\n", event);
+ }
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static struct ldc_channel_config vcc_ldc_cfg = {
+ .event = vcc_event,
+ .mtu = VIO_VCC_MTU_SIZE,
+ .mode = LDC_MODE_RAW,
+ .debug = 0,
+};
+
+/* Ordered from largest major to lowest */
+static struct vio_version vcc_versions[] = {
+ { .major = 1, .minor = 0 },
+};
+
+static struct tty_port_operations vcc_port_ops = { 0 };
+
+static ssize_t vcc_sysfs_domain_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct vcc_port *port;
+ int rv;
+
+ port = dev_get_drvdata(dev);
+ if (!port)
+ return -ENODEV;
+
+ rv = scnprintf(buf, PAGE_SIZE, "%s\n", port->domain);
+
+ return rv;
+}
+
+static int vcc_send_ctl(struct vcc_port *port, int ctl)
+{
+ struct vio_vcc pkt;
+ int rv;
+
+ pkt.tag.type = VIO_TYPE_CTRL;
+ pkt.tag.sid = ctl;
+ pkt.tag.stype = 0;
+
+ rv = ldc_write(port->vio.lp, &pkt, sizeof(pkt.tag));
+ WARN_ON(!rv);
+ vccdbg("VCC: ldc_write(%ld)=%d\n", sizeof(pkt.tag), rv);
+
+ return rv;
+}
+
+static ssize_t vcc_sysfs_break_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct vcc_port *port;
+ unsigned long flags;
+ int rv = count;
+ int brk;
+
+ port = dev_get_drvdata(dev);
+ if (!port)
+ return -ENODEV;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ if (sscanf(buf, "%ud", &brk) != 1 || brk != 1)
+ rv = -EINVAL;
+ else if (vcc_send_ctl(port, VCC_CTL_BREAK) < 0)
+ vcc_kick_tx(port);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ return rv;
+}
+
+static DEVICE_ATTR(domain, 0400, vcc_sysfs_domain_show, NULL);
+static DEVICE_ATTR(break, 0200, NULL, vcc_sysfs_break_store);
+
+static struct attribute *vcc_sysfs_entries[] = {
+ &dev_attr_domain.attr,
+ &dev_attr_break.attr,
+ NULL
+};
+
+static struct attribute_group vcc_attribute_group = {
+ .name = NULL,
+ .attrs = vcc_sysfs_entries,
+};
+
+/**
+ * vcc_probe() - Initialize VCC port
+ * @vdev: Pointer to VIO device of the new VCC port
+ * @id: VIO device ID
+ *
+ * Initializes a VCC port to receive serial console data from
+ * the guest domain. Sets up a TTY end point on the control
+ * domain. Sets up VIO/LDC link between the guest & control
+ * domain endpoints.
+ *
+ * Return: status of the probe
+ */
+static int vcc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
+{
+ struct mdesc_handle *hp;
+ struct vcc_port *port;
+ struct device *dev;
+ const char *domain;
+ char *name;
+ u64 node;
+ int rv;
+
+ vccdbg("VCC: name=%s\n", dev_name(&vdev->dev));
+
+ if (!vcc_tty_driver) {
+ pr_err("VCC: TTY driver not registered\n");
+ return -ENODEV;
+ }
+
+ port = kzalloc(sizeof(struct vcc_port), GFP_KERNEL);
+ if (!port)
+ return -ENOMEM;
+
+ name = kstrdup(dev_name(&vdev->dev), GFP_KERNEL);
+
+ rv = vio_driver_init(&port->vio, vdev, VDEV_CONSOLE_CON, vcc_versions,
+ ARRAY_SIZE(vcc_versions), NULL, name);
+ if (rv)
+ goto free_port;
+
+ port->vio.debug = vcc_dbg_vio;
+ vcc_ldc_cfg.debug = vcc_dbg_ldc;
+
+ rv = vio_ldc_alloc(&port->vio, &vcc_ldc_cfg, port);
+ if (rv)
+ goto free_port;
+
+ spin_lock_init(&port->lock);
+
+ port->index = vcc_table_add(port);
+ if (port->index == -1) {
+ pr_err("VCC: no more TTY indices left for allocation\n");
+ goto free_ldc;
+ }
+
+ /* Register the device using VCC table index as TTY index */
+ dev = tty_register_device(vcc_tty_driver, port->index, &vdev->dev);
+ if (IS_ERR(dev)) {
+ rv = PTR_ERR(dev);
+ goto free_table;
+ }
+
+ hp = mdesc_grab();
+
+ node = vio_vdev_node(hp, vdev);
+ if (node == MDESC_NODE_NULL) {
+ rv = -ENXIO;
+ mdesc_release(hp);
+ goto unreg_tty;
+ }
+
+ domain = mdesc_get_property(hp, node, "vcc-domain-name", NULL);
+ if (!domain) {
+ rv = -ENXIO;
+ mdesc_release(hp);
+ goto unreg_tty;
+ }
+ port->domain = kstrdup(domain, GFP_KERNEL);
+
+ mdesc_release(hp);
+
+ rv = sysfs_create_group(&vdev->dev.kobj, &vcc_attribute_group);
+ if (rv)
+ goto free_domain;
+
+ init_timer(&port->rx_timer);
+ port->rx_timer.function = vcc_rx_timer;
+ port->rx_timer.data = port->index;
+
+ init_timer(&port->tx_timer);
+ port->tx_timer.function = vcc_tx_timer;
+ port->tx_timer.data = port->index;
+
+ dev_set_drvdata(&vdev->dev, port);
+
+ /* It's possible to receive IRQs in the middle of vio_port_up. Disable
+ * IRQs until the port is up.
+ */
+ disable_irq_nosync(vdev->rx_irq);
+ vio_port_up(&port->vio);
+ enable_irq(vdev->rx_irq);
+
+ return 0;
+
+free_domain:
+ kfree(port->domain);
+unreg_tty:
+ tty_unregister_device(vcc_tty_driver, port->index);
+free_table:
+ vcc_table_remove(port->index);
+free_ldc:
+ vio_ldc_free(&port->vio);
+free_port:
+ kfree(name);
+ kfree(port);
+
+ return rv;
+}
+
+/**
+ * vcc_remove() - Terminate a VCC port
+ * @vdev: Pointer to VIO device of the VCC port
+ *
+ * Terminates a VCC port. Sets up the teardown of TTY and
+ * VIO/LDC link between guest and primary domains.
+ *
+ * Return: status of removal
+ */
+static int vcc_remove(struct vio_dev *vdev)
+{
+ struct vcc_port *port = dev_get_drvdata(&vdev->dev);
+
+ if (!port)
+ return -ENODEV;
+
+ del_timer_sync(&port->rx_timer);
+ del_timer_sync(&port->tx_timer);
+
+ /* If there's a process with the device open, do a synchronous
+ * hangup of the TTY. This *may* cause the process to call close
+ * asynchronously, but it's not guaranteed.
+ */
+ if (port->tty)
+ tty_vhangup(port->tty);
+
+ /* Get exclusive reference to VCC, ensures that there are no other
+ * clients to this port
+ */
+ port = vcc_get(port->index, true);
+
+ if (WARN_ON(!port))
+ return -ENODEV;
+
+ tty_unregister_device(vcc_tty_driver, port->index);
+
+ del_timer_sync(&port->vio.timer);
+ vio_ldc_free(&port->vio);
+ sysfs_remove_group(&vdev->dev.kobj, &vcc_attribute_group);
+ dev_set_drvdata(&vdev->dev, NULL);
+ if (port->tty) {
+ port->removed = true;
+ vcc_put(port, true);
+ } else {
+ vcc_table_remove(port->index);
+
+ kfree(port->vio.name);
+ kfree(port->domain);
+ kfree(port);
+ }
+
+ return 0;
+}
+
+static const struct vio_device_id vcc_match[] = {
+ {
+ .type = "vcc-port",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(vio, vcc_match);
+
+static struct vio_driver vcc_driver = {
+ .id_table = vcc_match,
+ .probe = vcc_probe,
+ .remove = vcc_remove,
+ .name = "vcc",
+};
+
+static int vcc_open(struct tty_struct *tty, struct file *vcc_file)
+{
+ struct vcc_port *port;
+
+ if (unlikely(!tty)) {
+ pr_err("VCC: open: Invalid TTY handle\n");
+ return -ENXIO;
+ }
+
+ if (tty->count > 1)
+ return -EBUSY;
+
+ port = vcc_get_ne(tty->index);
+ if (unlikely(!port)) {
+ pr_err("VCC: open: Failed to find VCC port\n");
+ return -ENODEV;
+ }
+
+ if (unlikely(!port->vio.lp)) {
+ pr_err("VCC: open: LDC channel not configured\n");
+ vcc_put(port, false);
+ return -EPIPE;
+ }
+ vccdbgl(port->vio.lp);
+
+ vcc_put(port, false);
+
+ if (unlikely(!tty->port)) {
+ pr_err("VCC: open: TTY port not found\n");
+ return -ENXIO;
+ }
+
+ if (unlikely(!tty->port->ops)) {
+ pr_err("VCC: open: TTY ops not defined\n");
+ return -ENXIO;
+ }
+
+ return tty_port_open(tty->port, tty, vcc_file);
+}
+
+static void vcc_close(struct tty_struct *tty, struct file *vcc_file)
+{
+ if (unlikely(!tty)) {
+ pr_err("VCC: close: Invalid TTY handle\n");
+ return;
+ }
+
+ if (unlikely(tty->count > 1))
+ return;
+
+ if (unlikely(!tty->port)) {
+ pr_err("VCC: close: TTY port not found\n");
+ return;
+ }
+
+ tty_port_close(tty->port, tty, vcc_file);
+}
+
+static void vcc_ldc_hup(struct vcc_port *port)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ if (vcc_send_ctl(port, VCC_CTL_HUP) < 0)
+ vcc_kick_tx(port);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void vcc_hangup(struct tty_struct *tty)
+{
+ struct vcc_port *port;
+
+ if (unlikely(!tty)) {
+ pr_err("VCC: hangup: Invalid TTY handle\n");
+ return;
+ }
+
+ port = vcc_get_ne(tty->index);
+ if (unlikely(!port)) {
+ pr_err("VCC: hangup: Failed to find VCC port\n");
+ return;
+ }
+
+ if (unlikely(!tty->port)) {
+ pr_err("VCC: hangup: TTY port not found\n");
+ vcc_put(port, false);
+ return;
+ }
+
+ vcc_ldc_hup(port);
+
+ vcc_put(port, false);
+
+ tty_port_hangup(tty->port);
+}
+
+static int vcc_write(struct tty_struct *tty, const unsigned char *buf,
+ int count)
+{
+ struct vcc_port *port;
+ struct vio_vcc *pkt;
+ unsigned long flags;
+ int total_sent = 0;
+ int tosend = 0;
+ int rv = -EINVAL;
+
+ if (unlikely(!tty)) {
+ pr_err("VCC: write: Invalid TTY handle\n");
+ return -ENXIO;
+ }
+
+ port = vcc_get_ne(tty->index);
+ if (unlikely(!port)) {
+ pr_err("VCC: write: Failed to find VCC port");
+ return -ENODEV;
+ }
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ pkt = &port->buffer;
+ pkt->tag.type = VIO_TYPE_DATA;
+
+ while (count > 0) {
+ /* Minimum of data to write and space available */
+ tosend = min(count, (VCC_BUFF_LEN - port->chars_in_buffer));
+
+ if (!tosend)
+ break;
+
+ memcpy(&pkt->data[port->chars_in_buffer], &buf[total_sent],
+ tosend);
+ port->chars_in_buffer += tosend;
+ pkt->tag.stype = tosend;
+
+ vccdbg("TAG [%02x:%02x:%04x:%08x]\n", pkt->tag.type,
+ pkt->tag.stype, pkt->tag.stype_env, pkt->tag.sid);
+ vccdbg("DATA [%s]\n", pkt->data);
+ vccdbgl(port->vio.lp);
+
+ /* Since we know we have enough room in VCC buffer for tosend
+ * we record that it was sent regardless of whether the
+ * hypervisor actually took it because we have it buffered.
+ */
+ rv = ldc_write(port->vio.lp, pkt, (VIO_TAG_SIZE + tosend));
+ vccdbg("VCC: write: ldc_write(%d)=%d\n",
+ (VIO_TAG_SIZE + tosend), rv);
+
+ total_sent += tosend;
+ count -= tosend;
+ if (rv < 0) {
+ vcc_kick_tx(port);
+ break;
+ }
+
+ port->chars_in_buffer = 0;
+ }
+
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ vcc_put(port, false);
+
+ vccdbg("VCC: write: total=%d rv=%d", total_sent, rv);
+
+ return total_sent ? total_sent : rv;
+}
+
+static int vcc_write_room(struct tty_struct *tty)
+{
+ struct vcc_port *port;
+ u64 num;
+
+ if (unlikely(!tty)) {
+ pr_err("VCC: write_room: Invalid TTY handle\n");
+ return -ENXIO;
+ }
+
+ port = vcc_get_ne(tty->index);
+ if (unlikely(!port)) {
+ pr_err("VCC: write_room: Failed to find VCC port\n");
+ return -ENODEV;
+ }
+
+ num = VCC_BUFF_LEN - port->chars_in_buffer;
+
+ vcc_put(port, false);
+
+ return num;
+}
+
+static int vcc_chars_in_buffer(struct tty_struct *tty)
+{
+ struct vcc_port *port;
+ u64 num;
+
+ if (unlikely(!tty)) {
+ pr_err("VCC: chars_in_buffer: Invalid TTY handle\n");
+ return -ENXIO;
+ }
+
+ port = vcc_get_ne(tty->index);
+ if (unlikely(!port)) {
+ pr_err("VCC: chars_in_buffer: Failed to find VCC port\n");
+ return -ENODEV;
+ }
+
+ num = port->chars_in_buffer;
+
+ vcc_put(port, false);
+
+ return num;
+}
+
+static int vcc_break_ctl(struct tty_struct *tty, int state)
+{
+ struct vcc_port *port;
+ unsigned long flags;
+
+ if (unlikely(!tty)) {
+ pr_err("VCC: break_ctl: Invalid TTY handle\n");
+ return -ENXIO;
+ }
+
+ port = vcc_get_ne(tty->index);
+ if (unlikely(!port)) {
+ pr_err("VCC: break_ctl: Failed to find VCC port\n");
+ return -ENODEV;
+ }
+
+ /* Turn off break */
+ if (state == 0) {
+ vcc_put(port, false);
+ return 0;
+ }
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ if (vcc_send_ctl(port, VCC_CTL_BREAK) < 0)
+ vcc_kick_tx(port);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ vcc_put(port, false);
+
+ return 0;
+}
+
+static int vcc_install(struct tty_driver *driver, struct tty_struct *tty)
+{
+ struct vcc_port *port_vcc;
+ struct tty_port *port_tty;
+ int ret;
+
+ if (unlikely(!tty)) {
+ pr_err("VCC: install: Invalid TTY handle\n");
+ return -ENXIO;
+ }
+
+ if (tty->index >= VCC_MAX_PORTS)
+ return -EINVAL;
+
+ ret = tty_standard_install(driver, tty);
+ if (ret)
+ return ret;
+
+ port_tty = kzalloc(sizeof(struct tty_port), GFP_KERNEL);
+ if (!port_tty)
+ return -ENOMEM;
+
+ port_vcc = vcc_get(tty->index, true);
+ if (!port_vcc) {
+ pr_err("VCC: install: Failed to find VCC port\n");
+ tty->port = NULL;
+ kfree(port_tty);
+ return -ENODEV;
+ }
+
+ tty_port_init(port_tty);
+ port_tty->ops = &vcc_port_ops;
+ tty->port = port_tty;
+
+ port_vcc->tty = tty;
+
+ vcc_put(port_vcc, true);
+
+ return 0;
+}
+
+static void vcc_cleanup(struct tty_struct *tty)
+{
+ struct vcc_port *port;
+
+ if (unlikely(!tty)) {
+ pr_err("VCC: cleanup: Invalid TTY handle\n");
+ return;
+ }
+
+ port = vcc_get(tty->index, true);
+ if (port) {
+ port->tty = NULL;
+
+ if (port->removed) {
+ vcc_table_remove(tty->index);
+ kfree(port->vio.name);
+ kfree(port->domain);
+ kfree(port);
+ } else {
+ vcc_put(port, true);
+ }
+ }
+
+ tty_port_destroy(tty->port);
+ kfree(tty->port);
+ tty->port = NULL;
+}
+
+static const struct tty_operations vcc_ops = {
+ .open = vcc_open,
+ .close = vcc_close,
+ .hangup = vcc_hangup,
+ .write = vcc_write,
+ .write_room = vcc_write_room,
+ .chars_in_buffer = vcc_chars_in_buffer,
+ .break_ctl = vcc_break_ctl,
+ .install = vcc_install,
+ .cleanup = vcc_cleanup,
+};
+
+#define VCC_TTY_FLAGS (TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_REAL_RAW)
+
+static int vcc_tty_init(void)
+{
+ int rv;
+
+ pr_info("VCC: %s\n", version);
+
+ vcc_tty_driver = tty_alloc_driver(VCC_MAX_PORTS, VCC_TTY_FLAGS);
+ if (IS_ERR(vcc_tty_driver)) {
+ pr_err("VCC: TTY driver alloc failed\n");
+ return PTR_ERR(vcc_tty_driver);
+ }
+
+ vcc_tty_driver->driver_name = vcc_driver_name;
+ vcc_tty_driver->name = vcc_device_node;
+
+ vcc_tty_driver->minor_start = VCC_MINOR_START;
+ vcc_tty_driver->type = TTY_DRIVER_TYPE_SYSTEM;
+ vcc_tty_driver->init_termios = vcc_tty_termios;
+
+ tty_set_operations(vcc_tty_driver, &vcc_ops);
+
+ rv = tty_register_driver(vcc_tty_driver);
+ if (rv) {
+ pr_err("VCC: TTY driver registration failed\n");
+ put_tty_driver(vcc_tty_driver);
+ vcc_tty_driver = NULL;
+ return rv;
+ }
+
+ vccdbg("VCC: TTY driver registered\n");
+
+ return 0;
+}
+
+static void vcc_tty_exit(void)
+{
+ tty_unregister_driver(vcc_tty_driver);
+ put_tty_driver(vcc_tty_driver);
+ vccdbg("VCC: TTY driver unregistered\n");
+
+ vcc_tty_driver = NULL;
+}
+
+static int __init vcc_init(void)
+{
+ int rv;
+
+ rv = vcc_tty_init();
+ if (rv) {
+ pr_err("VCC: TTY init failed\n");
+ return rv;
+ }
+
+ rv = vio_register_driver(&vcc_driver);
+ if (rv) {
+ pr_err("VCC: VIO driver registration failed\n");
+ vcc_tty_exit();
+ } else {
+ vccdbg("VCC: VIO driver registered successfully\n");
+ }
+
+ return rv;
+}
+
+static void __exit vcc_exit(void)
+{
+ vio_unregister_driver(&vcc_driver);
+ vccdbg("VCC: VIO driver unregistered\n");
+ vcc_tty_exit();
+ vccdbg("VCC: TTY driver unregistered\n");
+}
+
+module_init(vcc_init);
+module_exit(vcc_exit);