diff options
Diffstat (limited to 'drivers/misc')
52 files changed, 495 insertions, 426 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 8136dc7e863d..f1a5c2357b14 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -393,16 +393,6 @@ config SPEAR13XX_PCIE_GADGET entry will be created for that controller. User can use these sysfs node to configure PCIe EP as per his requirements. -config TI_DAC7512 - tristate "Texas Instruments DAC7512" - depends on SPI && SYSFS - help - If you say yes here you get support for the Texas Instruments - DAC7512 16-bit digital-to-analog converter. - - This driver can also be built as a module. If so, the module - will be called ti_dac7512. - config VMWARE_BALLOON tristate "VMware Balloon Driver" depends on VMWARE_VMCI && X86 && HYPERVISOR_GUEST diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index d84819dc2468..5ca5f64df478 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile for misc devices that really don't fit anywhere else. # @@ -30,7 +31,6 @@ obj-$(CONFIG_ISL29003) += isl29003.o obj-$(CONFIG_ISL29020) += isl29020.o obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o obj-$(CONFIG_DS1682) += ds1682.o -obj-$(CONFIG_TI_DAC7512) += ti_dac7512.o obj-$(CONFIG_C2PORT) += c2port/ obj-$(CONFIG_HMC6352) += hmc6352.o obj-y += eeprom/ diff --git a/drivers/misc/altera-stapl/Kconfig b/drivers/misc/altera-stapl/Kconfig index 7f01d8e93992..8a828fe41fad 100644 --- a/drivers/misc/altera-stapl/Kconfig +++ b/drivers/misc/altera-stapl/Kconfig @@ -1,4 +1,5 @@ -comment "Altera FPGA firmware download module" +comment "Altera FPGA firmware download module (requires I2C)" + depends on !I2C config ALTERA_STAPL tristate "Altera FPGA firmware download module" diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c index 1922cb8f6b88..1c5b7aec13d4 100644 --- a/drivers/misc/c2port/core.c +++ b/drivers/misc/c2port/core.c @@ -15,7 +15,6 @@ #include <linux/errno.h> #include <linux/err.h> #include <linux/kernel.h> -#include <linux/kmemcheck.h> #include <linux/ctype.h> #include <linux/delay.h> #include <linux/idr.h> @@ -904,7 +903,6 @@ struct c2port_device *c2port_device_register(char *name, return ERR_PTR(-EINVAL); c2dev = kmalloc(sizeof(struct c2port_device), GFP_KERNEL); - kmemcheck_annotate_bitfield(c2dev, flags); if (unlikely(!c2dev)) return ERR_PTR(-ENOMEM); diff --git a/drivers/misc/cxl/Makefile b/drivers/misc/cxl/Makefile index 0b5fd749d96d..502d41fc9ea5 100644 --- a/drivers/misc/cxl/Makefile +++ b/drivers/misc/cxl/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 ccflags-y := $(call cc-disable-warning, unused-const-variable) ccflags-$(CONFIG_PPC_WERROR) += -Werror diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c index a0c44d16bf30..7c11bad5cded 100644 --- a/drivers/misc/cxl/api.c +++ b/drivers/misc/cxl/api.c @@ -15,6 +15,7 @@ #include <linux/module.h> #include <linux/mount.h> #include <linux/sched/mm.h> +#include <linux/mmu_context.h> #include "cxl.h" @@ -331,9 +332,12 @@ int cxl_start_context(struct cxl_context *ctx, u64 wed, /* ensure this mm_struct can't be freed */ cxl_context_mm_count_get(ctx); - /* decrement the use count */ - if (ctx->mm) + if (ctx->mm) { + /* decrement the use count from above */ mmput(ctx->mm); + /* make TLBIs for this context global */ + mm_context_add_copro(ctx->mm); + } } /* @@ -342,13 +346,19 @@ int cxl_start_context(struct cxl_context *ctx, u64 wed, */ cxl_ctx_get(); + /* See the comment in afu_ioctl_start_work() */ + smp_mb(); + if ((rc = cxl_ops->attach_process(ctx, kernel, wed, 0))) { put_pid(ctx->pid); ctx->pid = NULL; cxl_adapter_context_put(ctx->afu->adapter); cxl_ctx_put(); - if (task) + if (task) { cxl_context_mm_count_put(ctx); + if (ctx->mm) + mm_context_remove_copro(ctx->mm); + } goto out; } diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c index 8c32040b9c09..12a41b2753f0 100644 --- a/drivers/misc/cxl/context.c +++ b/drivers/misc/cxl/context.c @@ -18,6 +18,7 @@ #include <linux/slab.h> #include <linux/idr.h> #include <linux/sched/mm.h> +#include <linux/mmu_context.h> #include <asm/cputable.h> #include <asm/current.h> #include <asm/copro.h> @@ -267,6 +268,8 @@ int __detach_context(struct cxl_context *ctx) /* Decrease the mm count on the context */ cxl_context_mm_count_put(ctx); + if (ctx->mm) + mm_context_remove_copro(ctx->mm); ctx->mm = NULL; return 0; diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index b1afeccbb97f..e46a4062904a 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -100,9 +100,12 @@ static const cxl_p1_reg_t CXL_XSL_FEC = {0x0158}; static const cxl_p1_reg_t CXL_XSL_DSNCTL = {0x0168}; /* PSL registers - CAIA 2 */ static const cxl_p1_reg_t CXL_PSL9_CONTROL = {0x0020}; +static const cxl_p1_reg_t CXL_XSL9_INV = {0x0110}; +static const cxl_p1_reg_t CXL_XSL9_DBG = {0x0130}; +static const cxl_p1_reg_t CXL_XSL9_DEF = {0x0140}; static const cxl_p1_reg_t CXL_XSL9_DSNCTL = {0x0168}; static const cxl_p1_reg_t CXL_PSL9_FIR1 = {0x0300}; -static const cxl_p1_reg_t CXL_PSL9_FIR2 = {0x0308}; +static const cxl_p1_reg_t CXL_PSL9_FIR_MASK = {0x0308}; static const cxl_p1_reg_t CXL_PSL9_Timebase = {0x0310}; static const cxl_p1_reg_t CXL_PSL9_DEBUG = {0x0320}; static const cxl_p1_reg_t CXL_PSL9_FIR_CNTL = {0x0348}; @@ -112,6 +115,7 @@ static const cxl_p1_reg_t CXL_PSL9_TRACECFG = {0x0368}; static const cxl_p1_reg_t CXL_PSL9_APCDEDALLOC = {0x0378}; static const cxl_p1_reg_t CXL_PSL9_APCDEDTYPE = {0x0380}; static const cxl_p1_reg_t CXL_PSL9_TNR_ADDR = {0x0388}; +static const cxl_p1_reg_t CXL_PSL9_CTCCFG = {0x0390}; static const cxl_p1_reg_t CXL_PSL9_GP_CT = {0x0398}; static const cxl_p1_reg_t CXL_XSL9_IERAT = {0x0588}; static const cxl_p1_reg_t CXL_XSL9_ILPP = {0x0590}; @@ -414,6 +418,9 @@ static const cxl_p2n_reg_t CXL_PSL_WED_An = {0x0A0}; #define CXL_CARD_MINOR(adapter) (adapter->adapter_num * CXL_DEV_MINORS) #define CXL_DEVT_ADAPTER(dev) (MINOR(dev) / CXL_DEV_MINORS) +#define CXL_PSL9_TRACEID_MAX 0xAU +#define CXL_PSL9_TRACESTATE_FIN 0x3U + enum cxl_context_status { CLOSED, OPENED, @@ -938,8 +945,6 @@ int cxl_debugfs_adapter_add(struct cxl *adapter); void cxl_debugfs_adapter_remove(struct cxl *adapter); int cxl_debugfs_afu_add(struct cxl_afu *afu); void cxl_debugfs_afu_remove(struct cxl_afu *afu); -void cxl_stop_trace_psl9(struct cxl *cxl); -void cxl_stop_trace_psl8(struct cxl *cxl); void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir); void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir); void cxl_debugfs_add_adapter_regs_xsl(struct cxl *adapter, struct dentry *dir); @@ -975,14 +980,6 @@ static inline void cxl_debugfs_afu_remove(struct cxl_afu *afu) { } -static inline void cxl_stop_trace_psl9(struct cxl *cxl) -{ -} - -static inline void cxl_stop_trace_psl8(struct cxl *cxl) -{ -} - static inline void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir) { @@ -1070,7 +1067,8 @@ u64 cxl_calculate_sr(bool master, bool kernel, bool real_mode, bool p9); void cxl_native_irq_dump_regs_psl9(struct cxl_context *ctx); void cxl_native_irq_dump_regs_psl8(struct cxl_context *ctx); -void cxl_native_err_irq_dump_regs(struct cxl *adapter); +void cxl_native_err_irq_dump_regs_psl8(struct cxl *adapter); +void cxl_native_err_irq_dump_regs_psl9(struct cxl *adapter); int cxl_pci_vphb_add(struct cxl_afu *afu); void cxl_pci_vphb_remove(struct cxl_afu *afu); void cxl_release_mapping(struct cxl_context *ctx); diff --git a/drivers/misc/cxl/cxllib.c b/drivers/misc/cxl/cxllib.c index 5dba23ca2e5f..dc9bc1807fdf 100644 --- a/drivers/misc/cxl/cxllib.c +++ b/drivers/misc/cxl/cxllib.c @@ -219,8 +219,17 @@ int cxllib_handle_fault(struct mm_struct *mm, u64 addr, u64 size, u64 flags) down_read(&mm->mmap_sem); - for (dar = addr; dar < addr + size; dar += page_size) { - if (!vma || dar < vma->vm_start || dar > vma->vm_end) { + vma = find_vma(mm, addr); + if (!vma) { + pr_err("Can't find vma for addr %016llx\n", addr); + rc = -EFAULT; + goto out; + } + /* get the size of the pages allocated */ + page_size = vma_kernel_pagesize(vma); + + for (dar = (addr & ~(page_size - 1)); dar < (addr + size); dar += page_size) { + if (dar < vma->vm_start || dar >= vma->vm_end) { vma = find_vma(mm, addr); if (!vma) { pr_err("Can't find vma for addr %016llx\n", addr); diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c index eae9d749f967..1643850d2302 100644 --- a/drivers/misc/cxl/debugfs.c +++ b/drivers/misc/cxl/debugfs.c @@ -15,28 +15,6 @@ static struct dentry *cxl_debugfs; -void cxl_stop_trace_psl9(struct cxl *adapter) -{ - /* Stop the trace */ - cxl_p1_write(adapter, CXL_PSL9_TRACECFG, 0x4480000000000000ULL); -} - -void cxl_stop_trace_psl8(struct cxl *adapter) -{ - int slice; - - /* Stop the trace */ - cxl_p1_write(adapter, CXL_PSL_TRACE, 0x8000000000000017LL); - - /* Stop the slice traces */ - spin_lock(&adapter->afu_list_lock); - for (slice = 0; slice < adapter->slices; slice++) { - if (adapter->afu[slice]) - cxl_p1n_write(adapter->afu[slice], CXL_PSL_SLICE_TRACE, 0x8000000000000000LL); - } - spin_unlock(&adapter->afu_list_lock); -} - /* Helpers to export CXL mmaped IO registers via debugfs */ static int debugfs_io_u64_get(void *data, u64 *val) { @@ -62,9 +40,14 @@ static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode, void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir) { debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR1)); - debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR2)); + debugfs_create_io_x64("fir_mask", 0400, dir, + _cxl_p1_addr(adapter, CXL_PSL9_FIR_MASK)); debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR_CNTL)); debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_TRACECFG)); + debugfs_create_io_x64("debug", 0600, dir, + _cxl_p1_addr(adapter, CXL_PSL9_DEBUG)); + debugfs_create_io_x64("xsl-debug", 0600, dir, + _cxl_p1_addr(adapter, CXL_XSL9_DBG)); } void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir) diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c index f17f72ea0545..70dbb6de102c 100644 --- a/drivers/misc/cxl/fault.c +++ b/drivers/misc/cxl/fault.c @@ -220,22 +220,11 @@ static bool cxl_is_segment_miss(struct cxl_context *ctx, u64 dsisr) static bool cxl_is_page_fault(struct cxl_context *ctx, u64 dsisr) { - u64 crs; /* Translation Checkout Response Status */ - if ((cxl_is_power8()) && (dsisr & CXL_PSL_DSISR_An_DM)) return true; - if (cxl_is_power9()) { - crs = (dsisr & CXL_PSL9_DSISR_An_CO_MASK); - if ((crs == CXL_PSL9_DSISR_An_PF_SLR) || - (crs == CXL_PSL9_DSISR_An_PF_RGC) || - (crs == CXL_PSL9_DSISR_An_PF_RGP) || - (crs == CXL_PSL9_DSISR_An_PF_HRH) || - (crs == CXL_PSL9_DSISR_An_PF_STEG) || - (crs == CXL_PSL9_DSISR_An_URTCH)) { - return true; - } - } + if (cxl_is_power9()) + return true; return false; } diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c index 4bfad9f6dc9f..76c0b0ca9388 100644 --- a/drivers/misc/cxl/file.c +++ b/drivers/misc/cxl/file.c @@ -19,6 +19,7 @@ #include <linux/mm.h> #include <linux/slab.h> #include <linux/sched/mm.h> +#include <linux/mmu_context.h> #include <asm/cputable.h> #include <asm/current.h> #include <asm/copro.h> @@ -220,9 +221,12 @@ static long afu_ioctl_start_work(struct cxl_context *ctx, /* ensure this mm_struct can't be freed */ cxl_context_mm_count_get(ctx); - /* decrement the use count */ - if (ctx->mm) + if (ctx->mm) { + /* decrement the use count from above */ mmput(ctx->mm); + /* make TLBIs for this context global */ + mm_context_add_copro(ctx->mm); + } /* * Increment driver use count. Enables global TLBIs for hash @@ -230,6 +234,20 @@ static long afu_ioctl_start_work(struct cxl_context *ctx, */ cxl_ctx_get(); + /* + * A barrier is needed to make sure all TLBIs are global + * before we attach and the context starts being used by the + * adapter. + * + * Needed after mm_context_add_copro() for radix and + * cxl_ctx_get() for hash/p8. + * + * The barrier should really be mb(), since it involves a + * device. However, it's only useful when we have local + * vs. global TLBIs, i.e SMP=y. So keep smp_mb(). + */ + smp_mb(); + trace_cxl_attach(ctx, work.work_element_descriptor, work.num_interrupts, amr); if ((rc = cxl_ops->attach_process(ctx, false, work.work_element_descriptor, @@ -240,6 +258,8 @@ static long afu_ioctl_start_work(struct cxl_context *ctx, ctx->pid = NULL; cxl_ctx_put(); cxl_context_mm_count_put(ctx); + if (ctx->mm) + mm_context_remove_copro(ctx->mm); goto out; } diff --git a/drivers/misc/cxl/flash.c b/drivers/misc/cxl/flash.c index 3aa216bf0939..43917898fb9a 100644 --- a/drivers/misc/cxl/flash.c +++ b/drivers/misc/cxl/flash.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include <linux/kernel.h> #include <linux/fs.h> #include <linux/semaphore.h> diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c index 4a82c313cf71..02b6b45b4c20 100644 --- a/drivers/misc/cxl/native.c +++ b/drivers/misc/cxl/native.c @@ -897,6 +897,14 @@ int cxl_attach_dedicated_process_psl9(struct cxl_context *ctx, u64 wed, u64 amr) if (ctx->afu->adapter->native->sl_ops->update_dedicated_ivtes) afu->adapter->native->sl_ops->update_dedicated_ivtes(ctx); + ctx->elem->software_state = cpu_to_be32(CXL_PE_SOFTWARE_STATE_V); + /* + * Ideally we should do a wmb() here to make sure the changes to the + * PE are visible to the card before we call afu_enable. + * On ppc64 though all mmios are preceded by a 'sync' instruction hence + * we dont dont need one here. + */ + result = cxl_ops->afu_reset(afu); if (result) return result; @@ -1077,13 +1085,11 @@ static int native_get_irq_info(struct cxl_afu *afu, struct cxl_irq_info *info) void cxl_native_irq_dump_regs_psl9(struct cxl_context *ctx) { - u64 fir1, fir2, serr; + u64 fir1, serr; fir1 = cxl_p1_read(ctx->afu->adapter, CXL_PSL9_FIR1); - fir2 = cxl_p1_read(ctx->afu->adapter, CXL_PSL9_FIR2); dev_crit(&ctx->afu->dev, "PSL_FIR1: 0x%016llx\n", fir1); - dev_crit(&ctx->afu->dev, "PSL_FIR2: 0x%016llx\n", fir2); if (ctx->afu->adapter->native->sl_ops->register_serr_irq) { serr = cxl_p1n_read(ctx->afu, CXL_PSL_SERR_An); cxl_afu_decode_psl_serr(ctx->afu, serr); @@ -1257,14 +1263,23 @@ static irqreturn_t native_slice_irq_err(int irq, void *data) return IRQ_HANDLED; } -void cxl_native_err_irq_dump_regs(struct cxl *adapter) +void cxl_native_err_irq_dump_regs_psl9(struct cxl *adapter) +{ + u64 fir1; + + fir1 = cxl_p1_read(adapter, CXL_PSL9_FIR1); + dev_crit(&adapter->dev, "PSL_FIR: 0x%016llx\n", fir1); +} + +void cxl_native_err_irq_dump_regs_psl8(struct cxl *adapter) { u64 fir1, fir2; fir1 = cxl_p1_read(adapter, CXL_PSL_FIR1); fir2 = cxl_p1_read(adapter, CXL_PSL_FIR2); - - dev_crit(&adapter->dev, "PSL_FIR1: 0x%016llx\nPSL_FIR2: 0x%016llx\n", fir1, fir2); + dev_crit(&adapter->dev, + "PSL_FIR1: 0x%016llx\nPSL_FIR2: 0x%016llx\n", + fir1, fir2); } static irqreturn_t native_irq_err(int irq, void *data) diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index 3ba04f371380..19969ee86d6f 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -401,7 +401,8 @@ int cxl_calc_capp_routing(struct pci_dev *dev, u64 *chipid, *capp_unit_id = get_capp_unit_id(np, *phb_index); of_node_put(np); if (!*capp_unit_id) { - pr_err("cxl: invalid capp unit id\n"); + pr_err("cxl: invalid capp unit id (phb_index: %d)\n", + *phb_index); return -ENODEV; } @@ -475,37 +476,37 @@ static int init_implementation_adapter_regs_psl9(struct cxl *adapter, psl_fircntl |= 0x1ULL; /* ce_thresh */ cxl_p1_write(adapter, CXL_PSL9_FIR_CNTL, psl_fircntl); - /* vccredits=0x1 pcklat=0x4 */ - cxl_p1_write(adapter, CXL_PSL9_DSNDCTL, 0x0000000000001810ULL); - - /* - * For debugging with trace arrays. - * Configure RX trace 0 segmented mode. - * Configure CT trace 0 segmented mode. - * Configure LA0 trace 0 segmented mode. - * Configure LA1 trace 0 segmented mode. + /* Setup the PSL to transmit packets on the PCIe before the + * CAPP is enabled */ - cxl_p1_write(adapter, CXL_PSL9_TRACECFG, 0x8040800080000000ULL); - cxl_p1_write(adapter, CXL_PSL9_TRACECFG, 0x8040800080000003ULL); - cxl_p1_write(adapter, CXL_PSL9_TRACECFG, 0x8040800080000005ULL); - cxl_p1_write(adapter, CXL_PSL9_TRACECFG, 0x8040800080000006ULL); + cxl_p1_write(adapter, CXL_PSL9_DSNDCTL, 0x0001001000002A10ULL); /* * A response to an ASB_Notify request is returned by the * system as an MMIO write to the address defined in - * the PSL_TNR_ADDR register + * the PSL_TNR_ADDR register. + * keep the Reset Value: 0x00020000E0000000 */ - /* PSL_TNR_ADDR */ - /* NORST */ - cxl_p1_write(adapter, CXL_PSL9_DEBUG, 0x8000000000000000ULL); + /* Enable XSL rty limit */ + cxl_p1_write(adapter, CXL_XSL9_DEF, 0x51F8000000000005ULL); - /* allocate the apc machines */ - cxl_p1_write(adapter, CXL_PSL9_APCDEDTYPE, 0x40000003FFFF0000ULL); + /* Change XSL_INV dummy read threshold */ + cxl_p1_write(adapter, CXL_XSL9_INV, 0x0000040007FFC200ULL); + + if (phb_index == 3) { + /* disable machines 31-47 and 20-27 for DMA */ + cxl_p1_write(adapter, CXL_PSL9_APCDEDTYPE, 0x40000FF3FFFF0000ULL); + } - /* Disable vc dd1 fix */ - if (cxl_is_power9_dd1()) - cxl_p1_write(adapter, CXL_PSL9_GP_CT, 0x0400000000000001ULL); + /* Snoop machines */ + cxl_p1_write(adapter, CXL_PSL9_APCDEDALLOC, 0x800F000200000000ULL); + + if (cxl_is_power9_dd1()) { + /* Disabling deadlock counter CAR */ + cxl_p1_write(adapter, CXL_PSL9_GP_CT, 0x0020000000000001ULL); + } else + cxl_p1_write(adapter, CXL_PSL9_DEBUG, 0x4000000000000000ULL); return 0; } @@ -1746,6 +1747,44 @@ static void cxl_deconfigure_adapter(struct cxl *adapter) pci_disable_device(pdev); } +static void cxl_stop_trace_psl9(struct cxl *adapter) +{ + int traceid; + u64 trace_state, trace_mask; + struct pci_dev *dev = to_pci_dev(adapter->dev.parent); + + /* read each tracearray state and issue mmio to stop them is needed */ + for (traceid = 0; traceid <= CXL_PSL9_TRACEID_MAX; ++traceid) { + trace_state = cxl_p1_read(adapter, CXL_PSL9_CTCCFG); + trace_mask = (0x3ULL << (62 - traceid * 2)); + trace_state = (trace_state & trace_mask) >> (62 - traceid * 2); + dev_dbg(&dev->dev, "cxl: Traceid-%d trace_state=0x%0llX\n", + traceid, trace_state); + + /* issue mmio if the trace array isn't in FIN state */ + if (trace_state != CXL_PSL9_TRACESTATE_FIN) + cxl_p1_write(adapter, CXL_PSL9_TRACECFG, + 0x8400000000000000ULL | traceid); + } +} + +static void cxl_stop_trace_psl8(struct cxl *adapter) +{ + int slice; + + /* Stop the trace */ + cxl_p1_write(adapter, CXL_PSL_TRACE, 0x8000000000000017LL); + + /* Stop the slice traces */ + spin_lock(&adapter->afu_list_lock); + for (slice = 0; slice < adapter->slices; slice++) { + if (adapter->afu[slice]) + cxl_p1n_write(adapter->afu[slice], CXL_PSL_SLICE_TRACE, + 0x8000000000000000LL); + } + spin_unlock(&adapter->afu_list_lock); +} + static const struct cxl_service_layer_ops psl9_ops = { .adapter_regs_init = init_implementation_adapter_regs_psl9, .invalidate_all = cxl_invalidate_all_psl9, @@ -1762,6 +1801,7 @@ static const struct cxl_service_layer_ops psl9_ops = { .debugfs_add_adapter_regs = cxl_debugfs_add_adapter_regs_psl9, .debugfs_add_afu_regs = cxl_debugfs_add_afu_regs_psl9, .psl_irq_dump_registers = cxl_native_irq_dump_regs_psl9, + .err_irq_dump_registers = cxl_native_err_irq_dump_regs_psl9, .debugfs_stop_trace = cxl_stop_trace_psl9, .write_timebase_ctrl = write_timebase_ctrl_psl9, .timebase_read = timebase_read_psl9, @@ -1785,7 +1825,7 @@ static const struct cxl_service_layer_ops psl8_ops = { .debugfs_add_adapter_regs = cxl_debugfs_add_adapter_regs_psl8, .debugfs_add_afu_regs = cxl_debugfs_add_afu_regs_psl8, .psl_irq_dump_registers = cxl_native_irq_dump_regs_psl8, - .err_irq_dump_registers = cxl_native_err_irq_dump_regs, + .err_irq_dump_registers = cxl_native_err_irq_dump_regs_psl8, .debugfs_stop_trace = cxl_stop_trace_psl8, .write_timebase_ctrl = write_timebase_ctrl_psl8, .timebase_read = timebase_read_psl8, @@ -2043,6 +2083,9 @@ static pci_ers_result_t cxl_vphb_error_detected(struct cxl_afu *afu, /* There should only be one entry, but go through the list * anyway */ + if (afu->phb == NULL) + return result; + list_for_each_entry(afu_dev, &afu->phb->bus->devices, bus_list) { if (!afu_dev->driver) continue; @@ -2084,8 +2127,7 @@ static pci_ers_result_t cxl_pci_error_detected(struct pci_dev *pdev, * Tell the AFU drivers; but we don't care what they * say, we're going away. */ - if (afu->phb != NULL) - cxl_vphb_error_detected(afu, state); + cxl_vphb_error_detected(afu, state); } return PCI_ERS_RESULT_DISCONNECT; } @@ -2225,6 +2267,9 @@ static pci_ers_result_t cxl_pci_slot_reset(struct pci_dev *pdev) if (cxl_afu_select_best_mode(afu)) goto err; + if (afu->phb == NULL) + continue; + list_for_each_entry(afu_dev, &afu->phb->bus->devices, bus_list) { /* Reset the device context. * TODO: make this less disruptive @@ -2287,6 +2332,9 @@ static void cxl_pci_resume(struct pci_dev *pdev) for (i = 0; i < adapter->slices; i++) { afu = adapter->afu[i]; + if (afu->phb == NULL) + continue; + list_for_each_entry(afu_dev, &afu->phb->bus->devices, bus_list) { if (afu_dev->driver && afu_dev->driver->err_handler && afu_dev->driver->err_handler->resume) diff --git a/drivers/misc/eeprom/Makefile b/drivers/misc/eeprom/Makefile index 90a52624ddeb..2aab60ef3e3e 100644 --- a/drivers/misc/eeprom/Makefile +++ b/drivers/misc/eeprom/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_EEPROM_AT24) += at24.o obj-$(CONFIG_EEPROM_AT25) += at25.o obj-$(CONFIG_EEPROM_LEGACY) += eeprom.o diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 764ff5df0dbc..305a7a464d09 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -12,6 +12,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/module.h> +#include <linux/of_device.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/mutex.h> @@ -24,6 +25,7 @@ #include <linux/i2c.h> #include <linux/nvmem-provider.h> #include <linux/platform_data/at24.h> +#include <linux/pm_runtime.h> /* * I2C EEPROMs from most vendors are inexpensive and mostly interchangeable. @@ -175,6 +177,64 @@ static const struct i2c_device_id at24_ids[] = { }; MODULE_DEVICE_TABLE(i2c, at24_ids); +static const struct of_device_id at24_of_match[] = { + { + .compatible = "atmel,24c00", + .data = (void *)AT24_DEVICE_MAGIC(128 / 8, AT24_FLAG_TAKE8ADDR) + }, + { + .compatible = "atmel,24c01", + .data = (void *)AT24_DEVICE_MAGIC(1024 / 8, 0) + }, + { + .compatible = "atmel,24c02", + .data = (void *)AT24_DEVICE_MAGIC(2048 / 8, 0) + }, + { + .compatible = "atmel,spd", + .data = (void *)AT24_DEVICE_MAGIC(2048 / 8, + AT24_FLAG_READONLY | AT24_FLAG_IRUGO) + }, + { + .compatible = "atmel,24c04", + .data = (void *)AT24_DEVICE_MAGIC(4096 / 8, 0) + }, + { + .compatible = "atmel,24c08", + .data = (void *)AT24_DEVICE_MAGIC(8192 / 8, 0) + }, + { + .compatible = "atmel,24c16", + .data = (void *)AT24_DEVICE_MAGIC(16384 / 8, 0) + }, + { + .compatible = "atmel,24c32", + .data = (void *)AT24_DEVICE_MAGIC(32768 / 8, AT24_FLAG_ADDR16) + }, + { + .compatible = "atmel,24c64", + .data = (void *)AT24_DEVICE_MAGIC(65536 / 8, AT24_FLAG_ADDR16) + }, + { + .compatible = "atmel,24c128", + .data = (void *)AT24_DEVICE_MAGIC(131072 / 8, AT24_FLAG_ADDR16) + }, + { + .compatible = "atmel,24c256", + .data = (void *)AT24_DEVICE_MAGIC(262144 / 8, AT24_FLAG_ADDR16) + }, + { + .compatible = "atmel,24c512", + .data = (void *)AT24_DEVICE_MAGIC(524288 / 8, AT24_FLAG_ADDR16) + }, + { + .compatible = "atmel,24c1024", + .data = (void *)AT24_DEVICE_MAGIC(1048576 / 8, AT24_FLAG_ADDR16) + }, + { }, +}; +MODULE_DEVICE_TABLE(of, at24_of_match); + static const struct acpi_device_id at24_acpi_ids[] = { { "INT3499", AT24_DEVICE_MAGIC(8192 / 8, 0) }, { } @@ -365,7 +425,8 @@ static ssize_t at24_eeprom_read_mac(struct at24_data *at24, char *buf, memset(msg, 0, sizeof(msg)); msg[0].addr = client->addr; msg[0].buf = addrbuf; - addrbuf[0] = 0x90 + offset; + /* EUI-48 starts from 0x9a, EUI-64 from 0x98 */ + addrbuf[0] = 0xa0 - at24->chip.byte_len + offset; msg[0].len = 1; msg[1].addr = client->addr; msg[1].flags = I2C_M_RD; @@ -501,11 +562,24 @@ static ssize_t at24_eeprom_write_i2c(struct at24_data *at24, const char *buf, static int at24_read(void *priv, unsigned int off, void *val, size_t count) { struct at24_data *at24 = priv; + struct i2c_client *client; char *buf = val; + int ret; if (unlikely(!count)) return count; + if (off + count > at24->chip.byte_len) + return -EINVAL; + + client = at24_translate_offset(at24, &off); + + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + return ret; + } + /* * Read data from chip, protecting against concurrent updates * from this host, but not from other I2C masters. @@ -518,6 +592,7 @@ static int at24_read(void *priv, unsigned int off, void *val, size_t count) status = at24->read_func(at24, buf, off, count); if (status < 0) { mutex_unlock(&at24->lock); + pm_runtime_put(&client->dev); return status; } buf += status; @@ -527,17 +602,32 @@ static int at24_read(void *priv, unsigned int off, void *val, size_t count) mutex_unlock(&at24->lock); + pm_runtime_put(&client->dev); + return 0; } static int at24_write(void *priv, unsigned int off, void *val, size_t count) { struct at24_data *at24 = priv; + struct i2c_client *client; char *buf = val; + int ret; if (unlikely(!count)) return -EINVAL; + if (off + count > at24->chip.byte_len) + return -EINVAL; + + client = at24_translate_offset(at24, &off); + + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + return ret; + } + /* * Write data to chip, protecting against concurrent updates * from this host, but not from other I2C masters. @@ -550,6 +640,7 @@ static int at24_write(void *priv, unsigned int off, void *val, size_t count) status = at24->write_func(at24, buf, off, count); if (status < 0) { mutex_unlock(&at24->lock); + pm_runtime_put(&client->dev); return status; } buf += status; @@ -559,6 +650,8 @@ static int at24_write(void *priv, unsigned int off, void *val, size_t count) mutex_unlock(&at24->lock); + pm_runtime_put(&client->dev); + return 0; } @@ -570,6 +663,10 @@ static void at24_get_pdata(struct device *dev, struct at24_platform_data *chip) if (device_property_present(dev, "read-only")) chip->flags |= AT24_FLAG_READONLY; + err = device_property_read_u32(dev, "size", &val); + if (!err) + chip->byte_len = val; + err = device_property_read_u32(dev, "pagesize", &val); if (!err) { chip->page_size = val; @@ -598,7 +695,16 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id) if (client->dev.platform_data) { chip = *(struct at24_platform_data *)client->dev.platform_data; } else { - if (id) { + /* + * The I2C core allows OF nodes compatibles to match against the + * I2C device ID table as a fallback, so check not only if an OF + * node is present but also if it matches an OF device ID entry. + */ + if (client->dev.of_node && + of_match_device(at24_of_match, &client->dev)) { + magic = (kernel_ulong_t) + of_device_get_match_data(&client->dev); + } else if (id) { magic = id->driver_data; } else { const struct acpi_device_id *aid; @@ -631,6 +737,16 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id) dev_warn(&client->dev, "page_size looks suspicious (no power of 2)!\n"); + /* + * REVISIT: the size of the EUI-48 byte array is 6 in at24mac402, while + * the call to ilog2() in AT24_DEVICE_MAGIC() rounds it down to 4. + * + * Eventually we'll get rid of the magic values altoghether in favor of + * real structs, but for now just manually set the right size. + */ + if (chip.flags & AT24_FLAG_MAC && chip.byte_len == 4) + chip.byte_len = 6; + /* Use I2C operations unless we're stuck with SMBus extensions. */ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { if (chip.flags & AT24_FLAG_ADDR16) @@ -739,11 +855,16 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id) i2c_set_clientdata(client, at24); + /* enable runtime pm */ + pm_runtime_set_active(&client->dev); + pm_runtime_enable(&client->dev); + /* * Perform a one-byte test read to verify that the * chip is functional. */ err = at24_read(at24, 0, &test_byte, 1); + pm_runtime_idle(&client->dev); if (err) { err = -ENODEV; goto err_clients; @@ -791,6 +912,8 @@ err_clients: if (at24->client[i]) i2c_unregister_device(at24->client[i]); + pm_runtime_disable(&client->dev); + return err; } @@ -806,6 +929,9 @@ static int at24_remove(struct i2c_client *client) for (i = 1; i < at24->num_addresses; i++) i2c_unregister_device(at24->client[i]); + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); + return 0; } @@ -814,6 +940,7 @@ static int at24_remove(struct i2c_client *client) static struct i2c_driver at24_driver = { .driver = { .name = "at24", + .of_match_table = at24_of_match, .acpi_match_table = ACPI_PTR(at24_acpi_ids), }, .probe = at24_probe, diff --git a/drivers/misc/genwqe/card_base.h b/drivers/misc/genwqe/card_base.h index 5813b5f25006..3743c87f8ab9 100644 --- a/drivers/misc/genwqe/card_base.h +++ b/drivers/misc/genwqe/card_base.h @@ -182,6 +182,7 @@ struct dma_mapping { struct list_head card_list; /* list of usr_maps for card */ struct list_head pin_list; /* list of pinned memory for dev */ + int write; /* writable map? useful in unmapping */ }; static inline void genwqe_mapping_init(struct dma_mapping *m, @@ -189,6 +190,7 @@ static inline void genwqe_mapping_init(struct dma_mapping *m, { memset(m, 0, sizeof(*m)); m->type = type; + m->write = 1; /* Assume the maps we create are R/W */ } /** @@ -347,6 +349,7 @@ enum genwqe_requ_state { * @user_size: size of user-space memory area * @page: buffer for partial pages if needed * @page_dma_addr: dma address partial pages + * @write: should we write it back to userspace? */ struct genwqe_sgl { dma_addr_t sgl_dma_addr; @@ -356,6 +359,8 @@ struct genwqe_sgl { void __user *user_addr; /* user-space base-address */ size_t user_size; /* size of memory area */ + int write; + unsigned long nr_pages; unsigned long fpage_offs; size_t fpage_size; @@ -369,7 +374,7 @@ struct genwqe_sgl { }; int genwqe_alloc_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl, - void __user *user_addr, size_t user_size); + void __user *user_addr, size_t user_size, int write); int genwqe_setup_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl, dma_addr_t *dma_list); diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c index dd4617764f14..3ecfa35457e0 100644 --- a/drivers/misc/genwqe/card_dev.c +++ b/drivers/misc/genwqe/card_dev.c @@ -942,6 +942,10 @@ static int ddcb_cmd_fixups(struct genwqe_file *cfile, struct ddcb_requ *req) genwqe_mapping_init(m, GENWQE_MAPPING_SGL_TEMP); + + if (ats_flags == ATS_TYPE_SGL_RD) + m->write = 0; + rc = genwqe_user_vmap(cd, m, (void *)u_addr, u_size, req); if (rc != 0) @@ -954,7 +958,7 @@ static int ddcb_cmd_fixups(struct genwqe_file *cfile, struct ddcb_requ *req) /* create genwqe style scatter gather list */ rc = genwqe_alloc_sync_sgl(cd, &req->sgls[i], (void __user *)u_addr, - u_size); + u_size, m->write); if (rc != 0) goto err_out; diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c index 147b83011b58..5c0d917636f7 100644 --- a/drivers/misc/genwqe/card_utils.c +++ b/drivers/misc/genwqe/card_utils.c @@ -296,7 +296,7 @@ static int genwqe_sgl_size(int num_pages) * from user-space into the cached pages. */ int genwqe_alloc_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl, - void __user *user_addr, size_t user_size) + void __user *user_addr, size_t user_size, int write) { int rc; struct pci_dev *pci_dev = cd->pci_dev; @@ -312,6 +312,7 @@ int genwqe_alloc_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl, sgl->user_addr = user_addr; sgl->user_size = user_size; + sgl->write = write; sgl->sgl_size = genwqe_sgl_size(sgl->nr_pages); if (get_order(sgl->sgl_size) > MAX_ORDER) { @@ -476,14 +477,20 @@ int genwqe_setup_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl, int genwqe_free_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl) { int rc = 0; + size_t offset; + unsigned long res; struct pci_dev *pci_dev = cd->pci_dev; if (sgl->fpage) { - if (copy_to_user(sgl->user_addr, sgl->fpage + sgl->fpage_offs, - sgl->fpage_size)) { - dev_err(&pci_dev->dev, "[%s] err: copying fpage!\n", - __func__); - rc = -EFAULT; + if (sgl->write) { + res = copy_to_user(sgl->user_addr, + sgl->fpage + sgl->fpage_offs, sgl->fpage_size); + if (res) { + dev_err(&pci_dev->dev, + "[%s] err: copying fpage! (res=%lu)\n", + __func__, res); + rc = -EFAULT; + } } __genwqe_free_consistent(cd, PAGE_SIZE, sgl->fpage, sgl->fpage_dma_addr); @@ -491,12 +498,16 @@ int genwqe_free_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl) sgl->fpage_dma_addr = 0; } if (sgl->lpage) { - if (copy_to_user(sgl->user_addr + sgl->user_size - - sgl->lpage_size, sgl->lpage, - sgl->lpage_size)) { - dev_err(&pci_dev->dev, "[%s] err: copying lpage!\n", - __func__); - rc = -EFAULT; + if (sgl->write) { + offset = sgl->user_size - sgl->lpage_size; + res = copy_to_user(sgl->user_addr + offset, sgl->lpage, + sgl->lpage_size); + if (res) { + dev_err(&pci_dev->dev, + "[%s] err: copying lpage! (res=%lu)\n", + __func__, res); + rc = -EFAULT; + } } __genwqe_free_consistent(cd, PAGE_SIZE, sgl->lpage, sgl->lpage_dma_addr); @@ -599,14 +610,14 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr, /* pin user pages in memory */ rc = get_user_pages_fast(data & PAGE_MASK, /* page aligned addr */ m->nr_pages, - 1, /* write by caller */ + m->write, /* readable/writable */ m->page_list); /* ptrs to pages */ if (rc < 0) goto fail_get_user_pages; /* assumption: get_user_pages can be killed by signals. */ if (rc < m->nr_pages) { - free_user_pages(m->page_list, rc, 0); + free_user_pages(m->page_list, rc, m->write); rc = -EFAULT; goto fail_get_user_pages; } @@ -618,7 +629,7 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr, return 0; fail_free_user_pages: - free_user_pages(m->page_list, m->nr_pages, 0); + free_user_pages(m->page_list, m->nr_pages, m->write); fail_get_user_pages: kfree(m->page_list); @@ -651,7 +662,7 @@ int genwqe_user_vunmap(struct genwqe_dev *cd, struct dma_mapping *m, genwqe_unmap_pages(cd, m->dma_list, m->nr_pages); if (m->page_list) { - free_user_pages(m->page_list, m->nr_pages, 1); + free_user_pages(m->page_list, m->nr_pages, m->write); kfree(m->page_list); m->page_list = NULL; diff --git a/drivers/misc/ibmasm/Makefile b/drivers/misc/ibmasm/Makefile index 9e63ade5ffd6..1b9dd0f44411 100644 --- a/drivers/misc/ibmasm/Makefile +++ b/drivers/misc/ibmasm/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_IBM_ASM) := ibmasm.o diff --git a/drivers/misc/ibmasm/event.c b/drivers/misc/ibmasm/event.c index 8e540f4e9d52..7e33025b4854 100644 --- a/drivers/misc/ibmasm/event.c +++ b/drivers/misc/ibmasm/event.c @@ -155,7 +155,7 @@ int ibmasm_event_buffer_init(struct service_processor *sp) buffer = kmalloc(sizeof(struct event_buffer), GFP_KERNEL); if (!buffer) - return 1; + return -ENOMEM; buffer->next_index = 0; buffer->next_serial_number = 1; diff --git a/drivers/misc/ibmasm/module.c b/drivers/misc/ibmasm/module.c index c5a456b0a564..e914b8c80943 100644 --- a/drivers/misc/ibmasm/module.c +++ b/drivers/misc/ibmasm/module.c @@ -94,12 +94,14 @@ static int ibmasm_init_one(struct pci_dev *pdev, const struct pci_device_id *id) snprintf(sp->dirname, IBMASM_NAME_SIZE, "%d", sp->number); snprintf(sp->devname, IBMASM_NAME_SIZE, "%s%d", DRIVER_NAME, sp->number); - if (ibmasm_event_buffer_init(sp)) { + result = ibmasm_event_buffer_init(sp); + if (result) { dev_err(sp->dev, "Failed to allocate event buffer\n"); goto error_eventbuffer; } - if (ibmasm_heartbeat_init(sp)) { + result = ibmasm_heartbeat_init(sp); + if (result) { dev_err(sp->dev, "Failed to allocate heartbeat command\n"); goto error_heartbeat; } diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c index fc7efedbc4be..24108bfad889 100644 --- a/drivers/misc/kgdbts.c +++ b/drivers/misc/kgdbts.c @@ -1132,7 +1132,8 @@ static void kgdbts_put_char(u8 chr) ts.run_test(0, chr); } -static int param_set_kgdbts_var(const char *kmessage, struct kernel_param *kp) +static int param_set_kgdbts_var(const char *kmessage, + const struct kernel_param *kp) { int len = strlen(kmessage); diff --git a/drivers/misc/lkdtm.h b/drivers/misc/lkdtm.h index bfb6c45b6130..687a0dbbe199 100644 --- a/drivers/misc/lkdtm.h +++ b/drivers/misc/lkdtm.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LKDTM_H #define __LKDTM_H diff --git a/drivers/misc/lkdtm_bugs.c b/drivers/misc/lkdtm_bugs.c index 9e0b4f959987..7eebbdfbcacd 100644 --- a/drivers/misc/lkdtm_bugs.c +++ b/drivers/misc/lkdtm_bugs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * This is for all the tests related to logic bugs (e.g. bad dereferences, * bad alignment, bad loops, bad locking, bad scheduling, deep stacks, and @@ -62,9 +63,11 @@ void lkdtm_BUG(void) BUG(); } +static int warn_counter; + void lkdtm_WARNING(void) { - WARN_ON(1); + WARN(1, "Warning message trigger count: %d\n", warn_counter++); } void lkdtm_EXCEPTION(void) diff --git a/drivers/misc/lkdtm_core.c b/drivers/misc/lkdtm_core.c index 981b3ef71e47..ba92291508dc 100644 --- a/drivers/misc/lkdtm_core.c +++ b/drivers/misc/lkdtm_core.c @@ -56,122 +56,54 @@ static ssize_t direct_entry(struct file *f, const char __user *user_buf, size_t count, loff_t *off); #ifdef CONFIG_KPROBES -static void lkdtm_handler(void); +static int lkdtm_kprobe_handler(struct kprobe *kp, struct pt_regs *regs); static ssize_t lkdtm_debugfs_entry(struct file *f, const char __user *user_buf, size_t count, loff_t *off); - - -/* jprobe entry point handlers. */ -static unsigned int jp_do_irq(unsigned int irq) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -static irqreturn_t jp_handle_irq_event(unsigned int irq, - struct irqaction *action) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -static void jp_tasklet_action(struct softirq_action *a) -{ - lkdtm_handler(); - jprobe_return(); -} - -static void jp_ll_rw_block(int rw, int nr, struct buffer_head *bhs[]) -{ - lkdtm_handler(); - jprobe_return(); -} - -struct scan_control; - -static unsigned long jp_shrink_inactive_list(unsigned long max_scan, - struct zone *zone, - struct scan_control *sc) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -static int jp_hrtimer_start(struct hrtimer *timer, ktime_t tim, - const enum hrtimer_mode mode) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -static int jp_scsi_dispatch_cmd(struct scsi_cmnd *cmd) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} - -# ifdef CONFIG_IDE -static int jp_generic_ide_ioctl(ide_drive_t *drive, struct file *file, - struct block_device *bdev, unsigned int cmd, - unsigned long arg) -{ - lkdtm_handler(); - jprobe_return(); - return 0; -} -# endif +# define CRASHPOINT_KPROBE(_symbol) \ + .kprobe = { \ + .symbol_name = (_symbol), \ + .pre_handler = lkdtm_kprobe_handler, \ + }, +# define CRASHPOINT_WRITE(_symbol) \ + (_symbol) ? lkdtm_debugfs_entry : direct_entry +#else +# define CRASHPOINT_KPROBE(_symbol) +# define CRASHPOINT_WRITE(_symbol) direct_entry #endif /* Crash points */ struct crashpoint { const char *name; const struct file_operations fops; - struct jprobe jprobe; + struct kprobe kprobe; }; -#define CRASHPOINT(_name, _write, _symbol, _entry) \ +#define CRASHPOINT(_name, _symbol) \ { \ .name = _name, \ .fops = { \ .read = lkdtm_debugfs_read, \ .llseek = generic_file_llseek, \ .open = lkdtm_debugfs_open, \ - .write = _write, \ - }, \ - .jprobe = { \ - .kp.symbol_name = _symbol, \ - .entry = (kprobe_opcode_t *)_entry, \ + .write = CRASHPOINT_WRITE(_symbol) \ }, \ + CRASHPOINT_KPROBE(_symbol) \ } /* Define the possible places where we can trigger a crash point. */ -struct crashpoint crashpoints[] = { - CRASHPOINT("DIRECT", direct_entry, - NULL, NULL), +static struct crashpoint crashpoints[] = { + CRASHPOINT("DIRECT", NULL), #ifdef CONFIG_KPROBES - CRASHPOINT("INT_HARDWARE_ENTRY", lkdtm_debugfs_entry, - "do_IRQ", jp_do_irq), - CRASHPOINT("INT_HW_IRQ_EN", lkdtm_debugfs_entry, - "handle_IRQ_event", jp_handle_irq_event), - CRASHPOINT("INT_TASKLET_ENTRY", lkdtm_debugfs_entry, - "tasklet_action", jp_tasklet_action), - CRASHPOINT("FS_DEVRW", lkdtm_debugfs_entry, - "ll_rw_block", jp_ll_rw_block), - CRASHPOINT("MEM_SWAPOUT", lkdtm_debugfs_entry, - "shrink_inactive_list", jp_shrink_inactive_list), - CRASHPOINT("TIMERADD", lkdtm_debugfs_entry, - "hrtimer_start", jp_hrtimer_start), - CRASHPOINT("SCSI_DISPATCH_CMD", lkdtm_debugfs_entry, - "scsi_dispatch_cmd", jp_scsi_dispatch_cmd), + CRASHPOINT("INT_HARDWARE_ENTRY", "do_IRQ"), + CRASHPOINT("INT_HW_IRQ_EN", "handle_IRQ_event"), + CRASHPOINT("INT_TASKLET_ENTRY", "tasklet_action"), + CRASHPOINT("FS_DEVRW", "ll_rw_block"), + CRASHPOINT("MEM_SWAPOUT", "shrink_inactive_list"), + CRASHPOINT("TIMERADD", "hrtimer_start"), + CRASHPOINT("SCSI_DISPATCH_CMD", "scsi_dispatch_cmd"), # ifdef CONFIG_IDE - CRASHPOINT("IDE_CORE_CP", lkdtm_debugfs_entry, - "generic_ide_ioctl", jp_generic_ide_ioctl), + CRASHPOINT("IDE_CORE_CP", "generic_ide_ioctl"), # endif #endif }; @@ -190,7 +122,7 @@ struct crashtype { } /* Define the possible types of crashes that can be triggered. */ -struct crashtype crashtypes[] = { +static const struct crashtype crashtypes[] = { CRASHTYPE(PANIC), CRASHTYPE(BUG), CRASHTYPE(WARNING), @@ -254,10 +186,10 @@ struct crashtype crashtypes[] = { }; -/* Global jprobe entry and crashtype. */ -static struct jprobe *lkdtm_jprobe; -struct crashpoint *lkdtm_crashpoint; -struct crashtype *lkdtm_crashtype; +/* Global kprobe entry and crashtype. */ +static struct kprobe *lkdtm_kprobe; +static struct crashpoint *lkdtm_crashpoint; +static const struct crashtype *lkdtm_crashtype; /* Module parameters */ static int recur_count = -1; @@ -280,7 +212,7 @@ MODULE_PARM_DESC(cpoint_count, " Crash Point Count, number of times the "\ /* Return the crashtype number or NULL if the name is invalid */ -static struct crashtype *find_crashtype(const char *name) +static const struct crashtype *find_crashtype(const char *name) { int i; @@ -296,34 +228,35 @@ static struct crashtype *find_crashtype(const char *name) * This is forced noinline just so it distinctly shows up in the stackdump * which makes validation of expected lkdtm crashes easier. */ -static noinline void lkdtm_do_action(struct crashtype *crashtype) +static noinline void lkdtm_do_action(const struct crashtype *crashtype) { - BUG_ON(!crashtype || !crashtype->func); + if (WARN_ON(!crashtype || !crashtype->func)) + return; crashtype->func(); } static int lkdtm_register_cpoint(struct crashpoint *crashpoint, - struct crashtype *crashtype) + const struct crashtype *crashtype) { int ret; /* If this doesn't have a symbol, just call immediately. */ - if (!crashpoint->jprobe.kp.symbol_name) { + if (!crashpoint->kprobe.symbol_name) { lkdtm_do_action(crashtype); return 0; } - if (lkdtm_jprobe != NULL) - unregister_jprobe(lkdtm_jprobe); + if (lkdtm_kprobe != NULL) + unregister_kprobe(lkdtm_kprobe); lkdtm_crashpoint = crashpoint; lkdtm_crashtype = crashtype; - lkdtm_jprobe = &crashpoint->jprobe; - ret = register_jprobe(lkdtm_jprobe); + lkdtm_kprobe = &crashpoint->kprobe; + ret = register_kprobe(lkdtm_kprobe); if (ret < 0) { - pr_info("Couldn't register jprobe %s\n", - crashpoint->jprobe.kp.symbol_name); - lkdtm_jprobe = NULL; + pr_info("Couldn't register kprobe %s\n", + crashpoint->kprobe.symbol_name); + lkdtm_kprobe = NULL; lkdtm_crashpoint = NULL; lkdtm_crashtype = NULL; } @@ -336,13 +269,14 @@ static int lkdtm_register_cpoint(struct crashpoint *crashpoint, static int crash_count = DEFAULT_COUNT; static DEFINE_SPINLOCK(crash_count_lock); -/* Called by jprobe entry points. */ -static void lkdtm_handler(void) +/* Called by kprobe entry points. */ +static int lkdtm_kprobe_handler(struct kprobe *kp, struct pt_regs *regs) { unsigned long flags; bool do_it = false; - BUG_ON(!lkdtm_crashpoint || !lkdtm_crashtype); + if (WARN_ON(!lkdtm_crashpoint || !lkdtm_crashtype)) + return 0; spin_lock_irqsave(&crash_count_lock, flags); crash_count--; @@ -357,6 +291,8 @@ static void lkdtm_handler(void) if (do_it) lkdtm_do_action(lkdtm_crashtype); + + return 0; } static ssize_t lkdtm_debugfs_entry(struct file *f, @@ -364,7 +300,7 @@ static ssize_t lkdtm_debugfs_entry(struct file *f, size_t count, loff_t *off) { struct crashpoint *crashpoint = file_inode(f)->i_private; - struct crashtype *crashtype = NULL; + const struct crashtype *crashtype = NULL; char *buf; int err; @@ -432,7 +368,7 @@ static int lkdtm_debugfs_open(struct inode *inode, struct file *file) static ssize_t direct_entry(struct file *f, const char __user *user_buf, size_t count, loff_t *off) { - struct crashtype *crashtype; + const struct crashtype *crashtype; char *buf; if (count >= PAGE_SIZE) @@ -468,7 +404,7 @@ static struct dentry *lkdtm_debugfs_root; static int __init lkdtm_module_init(void) { struct crashpoint *crashpoint = NULL; - struct crashtype *crashtype = NULL; + const struct crashtype *crashtype = NULL; int ret = -EINVAL; int i; @@ -556,8 +492,8 @@ static void __exit lkdtm_module_exit(void) /* Handle test-specific clean-up. */ lkdtm_usercopy_exit(); - if (lkdtm_jprobe != NULL) - unregister_jprobe(lkdtm_jprobe); + if (lkdtm_kprobe != NULL) + unregister_kprobe(lkdtm_kprobe); pr_info("Crash point unregistered\n"); } diff --git a/drivers/misc/lkdtm_heap.c b/drivers/misc/lkdtm_heap.c index ffb6aeac07b3..f5494a6d4be5 100644 --- a/drivers/misc/lkdtm_heap.c +++ b/drivers/misc/lkdtm_heap.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * This is for all the tests relating directly to heap memory, including * page allocation and slab allocations. diff --git a/drivers/misc/lkdtm_perms.c b/drivers/misc/lkdtm_perms.c index c7635a79341f..53b85c9d16b8 100644 --- a/drivers/misc/lkdtm_perms.c +++ b/drivers/misc/lkdtm_perms.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * This is for all the tests related to validating kernel memory * permissions: non-executable regions, non-writable regions, and diff --git a/drivers/misc/lkdtm_rodata.c b/drivers/misc/lkdtm_rodata.c index 3564477b8c2d..58d180af72cf 100644 --- a/drivers/misc/lkdtm_rodata.c +++ b/drivers/misc/lkdtm_rodata.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * This includes functions that are meant to live entirely in .rodata * (via objcopy tricks), to validate the non-executability of .rodata. diff --git a/drivers/misc/lkdtm_usercopy.c b/drivers/misc/lkdtm_usercopy.c index df6ac985fbb5..a64372cc148d 100644 --- a/drivers/misc/lkdtm_usercopy.c +++ b/drivers/misc/lkdtm_usercopy.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * This is for all the tests related to copy_to_user() and copy_from_user() * hardening. diff --git a/drivers/misc/mei/Makefile b/drivers/misc/mei/Makefile index 12cceb011a23..cd6825afa8e1 100644 --- a/drivers/misc/mei/Makefile +++ b/drivers/misc/mei/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile - Intel Management Engine Interface (Intel MEI) Linux driver # Copyright (c) 2010-2014, Intel Corporation. diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h index c8307e8b4c16..0ccccbaf530d 100644 --- a/drivers/misc/mei/hw-me-regs.h +++ b/drivers/misc/mei/hw-me-regs.h @@ -127,6 +127,8 @@ #define MEI_DEV_ID_BXT_M 0x1A9A /* Broxton M */ #define MEI_DEV_ID_APL_I 0x5A9A /* Apollo Lake I */ +#define MEI_DEV_ID_GLK 0x319A /* Gemini Lake */ + #define MEI_DEV_ID_KBP 0xA2BA /* Kaby Point */ #define MEI_DEV_ID_KBP_2 0xA2BB /* Kaby Point 2 */ diff --git a/drivers/misc/mei/mei-trace.c b/drivers/misc/mei/mei-trace.c index e19e6acb191b..374edde72a14 100644 --- a/drivers/misc/mei/mei-trace.c +++ b/drivers/misc/mei/mei-trace.c @@ -23,5 +23,4 @@ EXPORT_TRACEPOINT_SYMBOL(mei_reg_read); EXPORT_TRACEPOINT_SYMBOL(mei_reg_write); EXPORT_TRACEPOINT_SYMBOL(mei_pci_cfg_read); -EXPORT_TRACEPOINT_SYMBOL(mei_pci_cfg_write); #endif /* __CHECKER__ */ diff --git a/drivers/misc/mei/mei-trace.h b/drivers/misc/mei/mei-trace.h index 7d2d5d4a1624..b52e9b97a7c0 100644 --- a/drivers/misc/mei/mei-trace.h +++ b/drivers/misc/mei/mei-trace.h @@ -83,25 +83,6 @@ TRACE_EVENT(mei_pci_cfg_read, __get_str(dev), __entry->reg, __entry->offs, __entry->val) ); -TRACE_EVENT(mei_pci_cfg_write, - TP_PROTO(const struct device *dev, const char *reg, u32 offs, u32 val), - TP_ARGS(dev, reg, offs, val), - TP_STRUCT__entry( - __string(dev, dev_name(dev)) - __field(const char *, reg) - __field(u32, offs) - __field(u32, val) - ), - TP_fast_assign( - __assign_str(dev, dev_name(dev)) - __entry->reg = reg; - __entry->offs = offs; - __entry->val = val; - ), - TP_printk("[%s] pci cfg write %s[%#x] = %#x", - __get_str(dev), __entry->reg, __entry->offs, __entry->val) -); - #endif /* _MEI_TRACE_H_ */ /* This part must be outside protection */ diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 4ff40d319676..f4f17552c9b8 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -93,6 +93,8 @@ static const struct pci_device_id mei_me_pci_tbl[] = { {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, MEI_ME_PCH8_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, MEI_ME_PCH8_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_GLK, MEI_ME_PCH8_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, MEI_ME_PCH8_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, MEI_ME_PCH8_CFG)}, @@ -223,15 +225,18 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) * MEI requires to resume from runtime suspend mode * in order to perform link reset flow upon system suspend. */ - pdev->dev_flags |= PCI_DEV_FLAGS_NEEDS_RESUME; + dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NEVER_SKIP); /* - * For not wake-able HW runtime pm framework - * can't be used on pci device level. - * Use domain runtime pm callbacks instead. - */ - if (!pci_dev_run_wake(pdev)) - mei_me_set_pm_domain(dev); + * ME maps runtime suspend/resume to D0i states, + * hence we need to go around native PCI runtime service which + * eventually brings the device into D3cold/hot state, + * but the mei device cannot wake up from D3 unlike from D0i3. + * To get around the PCI device native runtime pm, + * ME uses runtime pm domain handlers which take precedence + * over the driver's pm handlers. + */ + mei_me_set_pm_domain(dev); if (mei_pg_is_enabled(dev)) pm_runtime_put_noidle(&pdev->dev); @@ -271,8 +276,7 @@ static void mei_me_shutdown(struct pci_dev *pdev) dev_dbg(&pdev->dev, "shutdown\n"); mei_stop(dev); - if (!pci_dev_run_wake(pdev)) - mei_me_unset_pm_domain(dev); + mei_me_unset_pm_domain(dev); mei_disable_interrupts(dev); free_irq(pdev->irq, dev); @@ -300,8 +304,7 @@ static void mei_me_remove(struct pci_dev *pdev) dev_dbg(&pdev->dev, "stop\n"); mei_stop(dev); - if (!pci_dev_run_wake(pdev)) - mei_me_unset_pm_domain(dev); + mei_me_unset_pm_domain(dev); mei_disable_interrupts(dev); diff --git a/drivers/misc/mei/pci-txe.c b/drivers/misc/mei/pci-txe.c index e38a5f144373..e1b909123fb0 100644 --- a/drivers/misc/mei/pci-txe.c +++ b/drivers/misc/mei/pci-txe.c @@ -141,15 +141,17 @@ static int mei_txe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) * MEI requires to resume from runtime suspend mode * in order to perform link reset flow upon system suspend. */ - pdev->dev_flags |= PCI_DEV_FLAGS_NEEDS_RESUME; + dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NEVER_SKIP); /* - * For not wake-able HW runtime pm framework - * can't be used on pci device level. - * Use domain runtime pm callbacks instead. - */ - if (!pci_dev_run_wake(pdev)) - mei_txe_set_pm_domain(dev); + * TXE maps runtime suspend/resume to own power gating states, + * hence we need to go around native PCI runtime service which + * eventually brings the device into D3cold/hot state. + * But the TXE device cannot wake up from D3 unlike from own + * power gating. To get around PCI device native runtime pm, + * TXE uses runtime pm domain handlers which take precedence. + */ + mei_txe_set_pm_domain(dev); pm_runtime_put_noidle(&pdev->dev); @@ -186,8 +188,7 @@ static void mei_txe_shutdown(struct pci_dev *pdev) dev_dbg(&pdev->dev, "shutdown\n"); mei_stop(dev); - if (!pci_dev_run_wake(pdev)) - mei_txe_unset_pm_domain(dev); + mei_txe_unset_pm_domain(dev); mei_disable_interrupts(dev); free_irq(pdev->irq, dev); @@ -215,8 +216,7 @@ static void mei_txe_remove(struct pci_dev *pdev) mei_stop(dev); - if (!pci_dev_run_wake(pdev)) - mei_txe_unset_pm_domain(dev); + mei_txe_unset_pm_domain(dev); mei_disable_interrupts(dev); free_irq(pdev->irq, dev); @@ -318,15 +318,7 @@ static int mei_txe_pm_runtime_suspend(struct device *device) else ret = -EAGAIN; - /* - * If everything is okay we're about to enter PCI low - * power state (D3) therefor we need to disable the - * interrupts towards host. - * However if device is not wakeable we do not enter - * D-low state and we need to keep the interrupt kicking - */ - if (!ret && pci_dev_run_wake(pdev)) - mei_disable_interrupts(dev); + /* keep irq on we are staying in D0 */ dev_dbg(&pdev->dev, "rpm: txe: runtime suspend ret=%d\n", ret); diff --git a/drivers/misc/mic/Kconfig b/drivers/misc/mic/Kconfig index 6fd9d367dea7..227cc7443671 100644 --- a/drivers/misc/mic/Kconfig +++ b/drivers/misc/mic/Kconfig @@ -1,3 +1,5 @@ +menu "Intel MIC & related support" + comment "Intel MIC Bus Driver" config INTEL_MIC_BUS @@ -150,3 +152,5 @@ config VOP if VOP source "drivers/vhost/Kconfig.vringh" endif + +endmenu diff --git a/drivers/misc/mic/Makefile b/drivers/misc/mic/Makefile index f2b1323ff96c..1a43622b183f 100644 --- a/drivers/misc/mic/Makefile +++ b/drivers/misc/mic/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile - Intel MIC Linux driver. # Copyright(c) 2013, Intel Corporation. diff --git a/drivers/misc/mic/card/Makefile b/drivers/misc/mic/card/Makefile index 6e9675e12a09..921a7e7e0fbd 100644 --- a/drivers/misc/mic/card/Makefile +++ b/drivers/misc/mic/card/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile - Intel MIC Linux driver. # Copyright(c) 2013, Intel Corporation. diff --git a/drivers/misc/mic/cosm/Makefile b/drivers/misc/mic/cosm/Makefile index b85d4d49df46..97d74cb12030 100644 --- a/drivers/misc/mic/cosm/Makefile +++ b/drivers/misc/mic/cosm/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile - Intel MIC Coprocessor State Management (COSM) Driver # Copyright(c) 2015, Intel Corporation. diff --git a/drivers/misc/mic/host/Makefile b/drivers/misc/mic/host/Makefile index f3b502333ded..25f153367980 100644 --- a/drivers/misc/mic/host/Makefile +++ b/drivers/misc/mic/host/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile - Intel MIC Linux driver. # Copyright(c) 2013, Intel Corporation. diff --git a/drivers/misc/mic/scif/Makefile b/drivers/misc/mic/scif/Makefile index 29cfc3e51ac9..ff372555d118 100644 --- a/drivers/misc/mic/scif/Makefile +++ b/drivers/misc/mic/scif/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile - SCIF driver. # Copyright(c) 2014, Intel Corporation. diff --git a/drivers/misc/mic/scif/scif_rb.c b/drivers/misc/mic/scif/scif_rb.c index 637cc4686742..b665757ca89a 100644 --- a/drivers/misc/mic/scif/scif_rb.c +++ b/drivers/misc/mic/scif/scif_rb.c @@ -138,7 +138,7 @@ void scif_rb_commit(struct scif_rb *rb) * the read barrier in scif_rb_count(..) */ wmb(); - ACCESS_ONCE(*rb->write_ptr) = rb->current_write_offset; + WRITE_ONCE(*rb->write_ptr, rb->current_write_offset); #ifdef CONFIG_INTEL_MIC_CARD /* * X100 Si bug: For the case where a Core is performing an EXT_WR @@ -147,7 +147,7 @@ void scif_rb_commit(struct scif_rb *rb) * This way, if ordering is violated for the Interrupt Message, it will * fall just behind the first Posted associated with the first EXT_WR. */ - ACCESS_ONCE(*rb->write_ptr) = rb->current_write_offset; + WRITE_ONCE(*rb->write_ptr, rb->current_write_offset); #endif } @@ -210,7 +210,7 @@ void scif_rb_update_read_ptr(struct scif_rb *rb) * scif_rb_space(..) */ mb(); - ACCESS_ONCE(*rb->read_ptr) = new_offset; + WRITE_ONCE(*rb->read_ptr, new_offset); #ifdef CONFIG_INTEL_MIC_CARD /* * X100 Si Bug: For the case where a Core is performing an EXT_WR @@ -219,7 +219,7 @@ void scif_rb_update_read_ptr(struct scif_rb *rb) * This way, if ordering is violated for the Interrupt Message, it will * fall just behind the first Posted associated with the first EXT_WR. */ - ACCESS_ONCE(*rb->read_ptr) = new_offset; + WRITE_ONCE(*rb->read_ptr, new_offset); #endif } diff --git a/drivers/misc/mic/scif/scif_rma.c b/drivers/misc/mic/scif/scif_rma.c index 329727e00e97..c824329f7012 100644 --- a/drivers/misc/mic/scif/scif_rma.c +++ b/drivers/misc/mic/scif/scif_rma.c @@ -39,8 +39,7 @@ void scif_rma_ep_init(struct scif_endpt *ep) struct scif_endpt_rma_info *rma = &ep->rma_info; mutex_init(&rma->rma_lock); - init_iova_domain(&rma->iovad, PAGE_SIZE, SCIF_IOVA_START_PFN, - SCIF_DMA_64BIT_PFN); + init_iova_domain(&rma->iovad, PAGE_SIZE, SCIF_IOVA_START_PFN); spin_lock_init(&rma->tc_lock); mutex_init(&rma->mmn_lock); INIT_LIST_HEAD(&rma->reg_list); diff --git a/drivers/misc/mic/scif/scif_rma_list.c b/drivers/misc/mic/scif/scif_rma_list.c index e1ef8daedd5a..a036dbb4101e 100644 --- a/drivers/misc/mic/scif/scif_rma_list.c +++ b/drivers/misc/mic/scif/scif_rma_list.c @@ -277,7 +277,7 @@ retry: * Need to restart list traversal if there has been * an asynchronous list entry deletion. */ - if (ACCESS_ONCE(ep->rma_info.async_list_del)) + if (READ_ONCE(ep->rma_info.async_list_del)) goto retry; } mutex_unlock(&ep->rma_info.rma_lock); diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index deb203026496..320276f42653 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -92,6 +92,7 @@ struct pci_endpoint_test { void __iomem *bar[6]; struct completion irq_raised; int last_irq; + int num_irqs; /* mutex to protect the ioctls */ struct mutex mutex; struct miscdevice miscdev; @@ -226,6 +227,9 @@ static bool pci_endpoint_test_copy(struct pci_endpoint_test *test, size_t size) u32 src_crc32; u32 dst_crc32; + if (size > SIZE_MAX - alignment) + goto err; + orig_src_addr = dma_alloc_coherent(dev, size + alignment, &orig_src_phys_addr, GFP_KERNEL); if (!orig_src_addr) { @@ -311,6 +315,9 @@ static bool pci_endpoint_test_write(struct pci_endpoint_test *test, size_t size) size_t alignment = test->alignment; u32 crc32; + if (size > SIZE_MAX - alignment) + goto err; + orig_addr = dma_alloc_coherent(dev, size + alignment, &orig_phys_addr, GFP_KERNEL); if (!orig_addr) { @@ -369,6 +376,9 @@ static bool pci_endpoint_test_read(struct pci_endpoint_test *test, size_t size) size_t alignment = test->alignment; u32 crc32; + if (size > SIZE_MAX - alignment) + goto err; + orig_addr = dma_alloc_coherent(dev, size + alignment, &orig_phys_addr, GFP_KERNEL); if (!orig_addr) { @@ -504,6 +514,7 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev, irq = pci_alloc_irq_vectors(pdev, 1, 32, PCI_IRQ_MSI); if (irq < 0) dev_err(dev, "failed to get MSI interrupts\n"); + test->num_irqs = irq; } err = devm_request_irq(dev, pdev->irq, pci_endpoint_test_irqhandler, @@ -533,6 +544,7 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev, test->base = test->bar[test_reg_bar]; if (!test->base) { + err = -ENOMEM; dev_err(dev, "Cannot perform PCI test without BAR%d\n", test_reg_bar); goto err_iounmap; @@ -542,6 +554,7 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev, id = ida_simple_get(&pci_endpoint_test_ida, 0, 0, GFP_KERNEL); if (id < 0) { + err = id; dev_err(dev, "unable to get id\n"); goto err_iounmap; } @@ -549,17 +562,24 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev, snprintf(name, sizeof(name), DRV_MODULE_NAME ".%d", id); misc_device = &test->miscdev; misc_device->minor = MISC_DYNAMIC_MINOR; - misc_device->name = name; + misc_device->name = kstrdup(name, GFP_KERNEL); + if (!misc_device->name) { + err = -ENOMEM; + goto err_ida_remove; + } misc_device->fops = &pci_endpoint_test_fops, err = misc_register(misc_device); if (err) { dev_err(dev, "failed to register device\n"); - goto err_ida_remove; + goto err_kfree_name; } return 0; +err_kfree_name: + kfree(misc_device->name); + err_ida_remove: ida_simple_remove(&pci_endpoint_test_ida, id); @@ -569,6 +589,9 @@ err_iounmap: pci_iounmap(pdev, test->bar[bar]); } + for (i = 0; i < irq; i++) + devm_free_irq(dev, pdev->irq + i, test); + err_disable_msi: pci_disable_msi(pdev); pci_release_regions(pdev); @@ -582,19 +605,25 @@ err_disable_pdev: static void pci_endpoint_test_remove(struct pci_dev *pdev) { int id; + int i; enum pci_barno bar; struct pci_endpoint_test *test = pci_get_drvdata(pdev); struct miscdevice *misc_device = &test->miscdev; if (sscanf(misc_device->name, DRV_MODULE_NAME ".%d", &id) != 1) return; + if (id < 0) + return; misc_deregister(&test->miscdev); + kfree(misc_device->name); ida_simple_remove(&pci_endpoint_test_ida, id); for (bar = BAR_0; bar <= BAR_5; bar++) { if (test->bar[bar]) pci_iounmap(pdev, test->bar[bar]); } + for (i = 0; i < test->num_irqs; i++) + devm_free_irq(&pdev->dev, pdev->irq + i, test); pci_disable_msi(pdev); pci_release_regions(pdev); pci_disable_device(pdev); diff --git a/drivers/misc/sgi-xp/Makefile b/drivers/misc/sgi-xp/Makefile index 4fc40d8e1bcc..bbb622c19c06 100644 --- a/drivers/misc/sgi-xp/Makefile +++ b/drivers/misc/sgi-xp/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile for SGI's XP devices. # diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c index 7f327121e6d7..0c775d6fcf59 100644 --- a/drivers/misc/sgi-xp/xpc_main.c +++ b/drivers/misc/sgi-xp/xpc_main.c @@ -172,9 +172,9 @@ struct xpc_arch_operations xpc_arch_ops; * Timer function to enforce the timelimit on the partition disengage. */ static void -xpc_timeout_partition_disengage(unsigned long data) +xpc_timeout_partition_disengage(struct timer_list *t) { - struct xpc_partition *part = (struct xpc_partition *)data; + struct xpc_partition *part = from_timer(part, t, disengage_timer); DBUG_ON(time_is_after_jiffies(part->disengage_timeout)); @@ -190,7 +190,7 @@ xpc_timeout_partition_disengage(unsigned long data) * specify when the next timeout should occur. */ static void -xpc_hb_beater(unsigned long dummy) +xpc_hb_beater(struct timer_list *unused) { xpc_arch_ops.increment_heartbeat(); @@ -205,8 +205,7 @@ static void xpc_start_hb_beater(void) { xpc_arch_ops.heartbeat_init(); - init_timer(&xpc_hb_timer); - xpc_hb_timer.function = xpc_hb_beater; + timer_setup(&xpc_hb_timer, xpc_hb_beater, 0); xpc_hb_beater(0); } @@ -931,10 +930,8 @@ xpc_setup_partitions(void) part->act_state = XPC_P_AS_INACTIVE; XPC_SET_REASON(part, 0, 0); - init_timer(&part->disengage_timer); - part->disengage_timer.function = - xpc_timeout_partition_disengage; - part->disengage_timer.data = (unsigned long)part; + timer_setup(&part->disengage_timer, + xpc_timeout_partition_disengage, 0); part->setup_state = XPC_P_SS_UNSET; init_waitqueue_head(&part->teardown_wq); diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c index 7d71c04fc938..5a12d2a54049 100644 --- a/drivers/misc/sgi-xp/xpc_sn2.c +++ b/drivers/misc/sgi-xp/xpc_sn2.c @@ -323,16 +323,16 @@ xpc_handle_notify_IRQ_sn2(int irq, void *dev_id) * was received. */ static void -xpc_check_for_dropped_notify_IRQ_sn2(struct xpc_partition *part) +xpc_check_for_dropped_notify_IRQ_sn2(struct timer_list *t) { - struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2; + struct xpc_partition *part = + from_timer(part, t, sn.sn2.dropped_notify_IRQ_timer); if (xpc_part_ref(part)) { xpc_check_for_sent_chctl_flags_sn2(part); - part_sn2->dropped_notify_IRQ_timer.expires = jiffies + - XPC_DROPPED_NOTIFY_IRQ_WAIT_INTERVAL; - add_timer(&part_sn2->dropped_notify_IRQ_timer); + t->expires = jiffies + XPC_DROPPED_NOTIFY_IRQ_WAIT_INTERVAL; + add_timer(t); xpc_part_deref(part); } } @@ -1232,10 +1232,7 @@ xpc_setup_ch_structures_sn2(struct xpc_partition *part) /* Setup a timer to check for dropped notify IRQs */ timer = &part_sn2->dropped_notify_IRQ_timer; - init_timer(timer); - timer->function = - (void (*)(unsigned long))xpc_check_for_dropped_notify_IRQ_sn2; - timer->data = (unsigned long)part; + timer_setup(timer, xpc_check_for_dropped_notify_IRQ_sn2, 0); timer->expires = jiffies + XPC_DROPPED_NOTIFY_IRQ_WAIT_INTERVAL; add_timer(timer); diff --git a/drivers/misc/ti_dac7512.c b/drivers/misc/ti_dac7512.c deleted file mode 100644 index f5456fb7d773..000000000000 --- a/drivers/misc/ti_dac7512.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * dac7512.c - Linux kernel module for - * Texas Instruments DAC7512 - * - * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/spi/spi.h> -#include <linux/of.h> - -static ssize_t dac7512_store_val(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct spi_device *spi = to_spi_device(dev); - unsigned char tmp[2]; - unsigned long val; - int ret; - - ret = kstrtoul(buf, 10, &val); - if (ret) - return ret; - - tmp[0] = val >> 8; - tmp[1] = val & 0xff; - spi_write(spi, tmp, sizeof(tmp)); - return count; -} - -static DEVICE_ATTR(value, S_IWUSR, NULL, dac7512_store_val); - -static struct attribute *dac7512_attributes[] = { - &dev_attr_value.attr, - NULL -}; - -static const struct attribute_group dac7512_attr_group = { - .attrs = dac7512_attributes, -}; - -static int dac7512_probe(struct spi_device *spi) -{ - int ret; - - spi->bits_per_word = 8; - spi->mode = SPI_MODE_0; - ret = spi_setup(spi); - if (ret < 0) - return ret; - - return sysfs_create_group(&spi->dev.kobj, &dac7512_attr_group); -} - -static int dac7512_remove(struct spi_device *spi) -{ - sysfs_remove_group(&spi->dev.kobj, &dac7512_attr_group); - return 0; -} - -static const struct spi_device_id dac7512_id_table[] = { - { "dac7512", 0 }, - { } -}; -MODULE_DEVICE_TABLE(spi, dac7512_id_table); - -#ifdef CONFIG_OF -static const struct of_device_id dac7512_of_match[] = { - { .compatible = "ti,dac7512", }, - { } -}; -MODULE_DEVICE_TABLE(of, dac7512_of_match); -#endif - -static struct spi_driver dac7512_driver = { - .driver = { - .name = "dac7512", - .of_match_table = of_match_ptr(dac7512_of_match), - }, - .probe = dac7512_probe, - .remove = dac7512_remove, - .id_table = dac7512_id_table, -}; - -module_spi_driver(dac7512_driver); - -MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>"); -MODULE_DESCRIPTION("DAC7512 16-bit DAC"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c index 1e688bfec567..9047c0a529b2 100644 --- a/drivers/misc/vmw_balloon.c +++ b/drivers/misc/vmw_balloon.c @@ -1271,7 +1271,7 @@ static int __init vmballoon_init(void) * Check if we are running on VMware's hypervisor and bail out * if we are not. */ - if (x86_hyper != &x86_hyper_vmware) + if (x86_hyper_type != X86_HYPER_VMWARE) return -ENODEV; for (is_2m_pages = 0; is_2m_pages < VMW_BALLOON_NUM_PAGE_SIZES; |
