diff options
| -rw-r--r-- | drivers/misc/cxl/api.c | 8 | ||||
| -rw-r--r-- | drivers/misc/cxl/context.c | 4 | ||||
| -rw-r--r-- | drivers/misc/cxl/cxl.h | 53 | ||||
| -rw-r--r-- | drivers/misc/cxl/fault.c | 6 | ||||
| -rw-r--r-- | drivers/misc/cxl/file.c | 15 | ||||
| -rw-r--r-- | drivers/misc/cxl/irq.c | 19 | ||||
| -rw-r--r-- | drivers/misc/cxl/main.c | 11 | ||||
| -rw-r--r-- | drivers/misc/cxl/native.c | 135 | ||||
| -rw-r--r-- | drivers/misc/cxl/pci.c | 16 | ||||
| -rw-r--r-- | drivers/misc/cxl/sysfs.c | 32 | ||||
| -rw-r--r-- | drivers/misc/cxl/vphb.c | 6 |
11 files changed, 185 insertions, 120 deletions
diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c index b45d857b0207..31eb842ee6c0 100644 --- a/drivers/misc/cxl/api.c +++ b/drivers/misc/cxl/api.c @@ -100,7 +100,7 @@ EXPORT_SYMBOL_GPL(cxl_allocate_afu_irqs); void cxl_free_afu_irqs(struct cxl_context *ctx) { afu_irq_name_free(ctx); - cxl_release_irq_ranges(&ctx->irqs, ctx->afu->adapter); + cxl_ops->release_irq_ranges(&ctx->irqs, ctx->afu->adapter); } EXPORT_SYMBOL_GPL(cxl_free_afu_irqs); @@ -176,7 +176,7 @@ int cxl_start_context(struct cxl_context *ctx, u64 wed, cxl_ctx_get(); - if ((rc = cxl_attach_process(ctx, kernel, wed , 0))) { + if ((rc = cxl_ops->attach_process(ctx, kernel, wed, 0))) { put_pid(ctx->pid); cxl_ctx_put(); goto out; @@ -342,11 +342,11 @@ int cxl_afu_reset(struct cxl_context *ctx) struct cxl_afu *afu = ctx->afu; int rc; - rc = __cxl_afu_reset(afu); + rc = cxl_ops->afu_reset(afu); if (rc) return rc; - return cxl_afu_check_and_enable(afu); + return cxl_ops->afu_check_and_enable(afu); } EXPORT_SYMBOL_GPL(cxl_afu_reset); diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c index 262b88eac414..aa65262d4a32 100644 --- a/drivers/misc/cxl/context.c +++ b/drivers/misc/cxl/context.c @@ -214,8 +214,8 @@ int __detach_context(struct cxl_context *ctx) /* Only warn if we detached while the link was OK. * If detach fails when hw is down, we don't care. */ - WARN_ON(cxl_detach_process(ctx) && - cxl_adapter_link_ok(ctx->afu->adapter)); + WARN_ON(cxl_ops->detach_process(ctx) && + cxl_ops->link_ok(ctx->afu->adapter)); flush_work(&ctx->fault_work); /* Only needed for dedicated process */ /* release the reference to the group leader and mm handling pid */ diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index 3b824e3d68d2..8233af305f8d 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -623,11 +623,6 @@ static inline u64 cxl_p2n_read(struct cxl_afu *afu, cxl_p2n_reg_t reg) return ~0ULL; } -u64 cxl_afu_cr_read64(struct cxl_afu *afu, int cr, u64 off); -u32 cxl_afu_cr_read32(struct cxl_afu *afu, int cr, u64 off); -u16 cxl_afu_cr_read16(struct cxl_afu *afu, int cr, u64 off); -u8 cxl_afu_cr_read8(struct cxl_afu *afu, int cr, u64 off); - ssize_t cxl_afu_read_err_buffer(struct cxl_afu *afu, char *buf, loff_t off, size_t count); @@ -666,10 +661,6 @@ void cxl_sysfs_afu_m_remove(struct cxl_afu *afu); struct cxl *cxl_alloc_adapter(void); struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice); - -int cxl_afu_activate_mode(struct cxl_afu *afu, int mode); -int _cxl_afu_deactivate_mode(struct cxl_afu *afu, int mode); -int cxl_afu_deactivate_mode(struct cxl_afu *afu); int cxl_afu_select_best_mode(struct cxl_afu *afu); int cxl_register_psl_irq(struct cxl_afu *afu); @@ -681,8 +672,6 @@ void cxl_release_serr_irq(struct cxl_afu *afu); int afu_register_irqs(struct cxl_context *ctx, u32 count); void afu_release_irqs(struct cxl_context *ctx, void *cookie); void afu_irq_name_free(struct cxl_context *ctx); -irqreturn_t handle_psl_slice_error(struct cxl_context *ctx, u64 dsisr, - u64 errstat); int cxl_debugfs_init(void); void cxl_debugfs_exit(void); @@ -727,18 +716,10 @@ int cxl_register_one_irq(struct cxl *adapter, irq_handler_t handler, void *cookie, irq_hw_number_t *dest_hwirq, unsigned int *dest_virq, const char *name); -int cxl_attach_process(struct cxl_context *ctx, bool kernel, u64 wed, - u64 amr); -int cxl_detach_process(struct cxl_context *ctx); - -int cxl_ack_irq(struct cxl_context *ctx, u64 tfc, u64 psl_reset_mask); - int cxl_check_error(struct cxl_afu *afu); int cxl_afu_slbia(struct cxl_afu *afu); int cxl_tlb_slb_invalidate(struct cxl *adapter); int cxl_afu_disable(struct cxl_afu *afu); -int __cxl_afu_reset(struct cxl_afu *afu); -int cxl_afu_check_and_enable(struct cxl_afu *afu); int cxl_psl_purge(struct cxl_afu *afu); void cxl_stop_trace(struct cxl *cxl); @@ -757,4 +738,38 @@ unsigned int afu_poll(struct file *file, struct poll_table_struct *poll); ssize_t afu_read(struct file *file, char __user *buf, size_t count, loff_t *off); extern const struct file_operations afu_fops; +struct cxl_backend_ops { + struct module *module; + int (*adapter_reset)(struct cxl *adapter); + int (*alloc_one_irq)(struct cxl *adapter); + void (*release_one_irq)(struct cxl *adapter, int hwirq); + int (*alloc_irq_ranges)(struct cxl_irq_ranges *irqs, + struct cxl *adapter, unsigned int num); + void (*release_irq_ranges)(struct cxl_irq_ranges *irqs, + struct cxl *adapter); + int (*setup_irq)(struct cxl *adapter, unsigned int hwirq, + unsigned int virq); + irqreturn_t (*handle_psl_slice_error)(struct cxl_context *ctx, + u64 dsisr, u64 errstat); + irqreturn_t (*psl_interrupt)(int irq, void *data); + int (*ack_irq)(struct cxl_context *ctx, u64 tfc, u64 psl_reset_mask); + int (*attach_process)(struct cxl_context *ctx, bool kernel, + u64 wed, u64 amr); + int (*detach_process)(struct cxl_context *ctx); + bool (*link_ok)(struct cxl *cxl); + void (*release_afu)(struct device *dev); + ssize_t (*afu_read_err_buffer)(struct cxl_afu *afu, char *buf, + loff_t off, size_t count); + int (*afu_check_and_enable)(struct cxl_afu *afu); + int (*afu_activate_mode)(struct cxl_afu *afu, int mode); + int (*afu_deactivate_mode)(struct cxl_afu *afu, int mode); + int (*afu_reset)(struct cxl_afu *afu); + int (*afu_cr_read8)(struct cxl_afu *afu, int cr_idx, u64 offset, u8 *val); + int (*afu_cr_read16)(struct cxl_afu *afu, int cr_idx, u64 offset, u16 *val); + int (*afu_cr_read32)(struct cxl_afu *afu, int cr_idx, u64 offset, u32 *val); + int (*afu_cr_read64)(struct cxl_afu *afu, int cr_idx, u64 offset, u64 *val); +}; +extern const struct cxl_backend_ops cxl_native_ops; +extern const struct cxl_backend_ops *cxl_ops; + #endif diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c index 81c3f75b7330..ab740a19bd1e 100644 --- a/drivers/misc/cxl/fault.c +++ b/drivers/misc/cxl/fault.c @@ -101,7 +101,7 @@ static void cxl_ack_ae(struct cxl_context *ctx) { unsigned long flags; - cxl_ack_irq(ctx, CXL_PSL_TFC_An_AE, 0); + cxl_ops->ack_irq(ctx, CXL_PSL_TFC_An_AE, 0); spin_lock_irqsave(&ctx->lock, flags); ctx->pending_fault = true; @@ -125,7 +125,7 @@ static int cxl_handle_segment_miss(struct cxl_context *ctx, else { mb(); /* Order seg table write to TFC MMIO write */ - cxl_ack_irq(ctx, CXL_PSL_TFC_An_R, 0); + cxl_ops->ack_irq(ctx, CXL_PSL_TFC_An_R, 0); } return IRQ_HANDLED; @@ -163,7 +163,7 @@ static void cxl_handle_page_fault(struct cxl_context *ctx, local_irq_restore(flags); pr_devel("Page fault successfully handled for pe: %i!\n", ctx->pe); - cxl_ack_irq(ctx, CXL_PSL_TFC_An_R, 0); + cxl_ops->ack_irq(ctx, CXL_PSL_TFC_An_R, 0); } /* diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c index 783337d22f36..b8ce29bc52d5 100644 --- a/drivers/misc/cxl/file.c +++ b/drivers/misc/cxl/file.c @@ -79,7 +79,7 @@ static int __afu_open(struct inode *inode, struct file *file, bool master) if (!afu->current_mode) goto err_put_afu; - if (!cxl_adapter_link_ok(adapter)) { + if (!cxl_ops->link_ok(adapter)) { rc = -EIO; goto err_put_afu; } @@ -210,8 +210,8 @@ static long afu_ioctl_start_work(struct cxl_context *ctx, trace_cxl_attach(ctx, work.work_element_descriptor, work.num_interrupts, amr); - if ((rc = cxl_attach_process(ctx, false, work.work_element_descriptor, - amr))) { + if ((rc = cxl_ops->attach_process(ctx, false, work.work_element_descriptor, + amr))) { afu_release_irqs(ctx, ctx); goto out; } @@ -222,6 +222,7 @@ out: mutex_unlock(&ctx->status_mutex); return rc; } + static long afu_ioctl_process_element(struct cxl_context *ctx, int __user *upe) { @@ -259,7 +260,7 @@ long afu_ioctl(struct file *file, unsigned int cmd, unsigned long arg) if (ctx->status == CLOSED) return -EIO; - if (!cxl_adapter_link_ok(ctx->afu->adapter)) + if (!cxl_ops->link_ok(ctx->afu->adapter)) return -EIO; pr_devel("afu_ioctl\n"); @@ -289,7 +290,7 @@ int afu_mmap(struct file *file, struct vm_area_struct *vm) if (ctx->status != STARTED) return -EIO; - if (!cxl_adapter_link_ok(ctx->afu->adapter)) + if (!cxl_ops->link_ok(ctx->afu->adapter)) return -EIO; return cxl_context_iomap(ctx, vm); @@ -336,7 +337,7 @@ ssize_t afu_read(struct file *file, char __user *buf, size_t count, int rc; DEFINE_WAIT(wait); - if (!cxl_adapter_link_ok(ctx->afu->adapter)) + if (!cxl_ops->link_ok(ctx->afu->adapter)) return -EIO; if (count < CXL_READ_MIN_SIZE) @@ -349,7 +350,7 @@ ssize_t afu_read(struct file *file, char __user *buf, size_t count, if (ctx_event_pending(ctx)) break; - if (!cxl_adapter_link_ok(ctx->afu->adapter)) { + if (!cxl_ops->link_ok(ctx->afu->adapter)) { rc = -EIO; goto out; } diff --git a/drivers/misc/cxl/irq.c b/drivers/misc/cxl/irq.c index 16fd67ffb5ef..56ad301007b7 100644 --- a/drivers/misc/cxl/irq.c +++ b/drivers/misc/cxl/irq.c @@ -79,7 +79,8 @@ irqreturn_t cxl_irq(int irq, void *data, struct cxl_irq_info *irq_info) if (dsisr & CXL_PSL_DSISR_An_UR) pr_devel("CXL interrupt: AURP PTE not found\n"); if (dsisr & CXL_PSL_DSISR_An_PE) - return handle_psl_slice_error(ctx, dsisr, irq_info->errstat); + return cxl_ops->handle_psl_slice_error(ctx, dsisr, + irq_info->errstat); if (dsisr & CXL_PSL_DSISR_An_AE) { pr_devel("CXL interrupt: AFU Error 0x%016llx\n", irq_info->afu_err); @@ -103,7 +104,7 @@ irqreturn_t cxl_irq(int irq, void *data, struct cxl_irq_info *irq_info) wake_up_all(&ctx->wq); } - cxl_ack_irq(ctx, CXL_PSL_TFC_An_A, 0); + cxl_ops->ack_irq(ctx, CXL_PSL_TFC_An_A, 0); return IRQ_HANDLED; } if (dsisr & CXL_PSL_DSISR_An_OC) @@ -167,7 +168,8 @@ unsigned int cxl_map_irq(struct cxl *adapter, irq_hw_number_t hwirq, return 0; } - cxl_setup_irq(adapter, hwirq, virq); + if (cxl_ops->setup_irq) + cxl_ops->setup_irq(adapter, hwirq, virq); pr_devel("hwirq %#lx mapped to virq %u\n", hwirq, virq); @@ -195,7 +197,7 @@ int cxl_register_one_irq(struct cxl *adapter, { int hwirq, virq; - if ((hwirq = cxl_alloc_one_irq(adapter)) < 0) + if ((hwirq = cxl_ops->alloc_one_irq(adapter)) < 0) return hwirq; if (!(virq = cxl_map_irq(adapter, hwirq, handler, cookie, name))) @@ -207,7 +209,7 @@ int cxl_register_one_irq(struct cxl *adapter, return 0; err: - cxl_release_one_irq(adapter, hwirq); + cxl_ops->release_one_irq(adapter, hwirq); return -ENOMEM; } @@ -230,7 +232,8 @@ int afu_allocate_irqs(struct cxl_context *ctx, u32 count) /* Initialize the list head to hold irq names */ INIT_LIST_HEAD(&ctx->irq_names); - if ((rc = cxl_alloc_irq_ranges(&ctx->irqs, ctx->afu->adapter, count))) + if ((rc = cxl_ops->alloc_irq_ranges(&ctx->irqs, ctx->afu->adapter, + count))) return rc; /* Multiplexed PSL Interrupt */ @@ -268,7 +271,7 @@ int afu_allocate_irqs(struct cxl_context *ctx, u32 count) return 0; out: - cxl_release_irq_ranges(&ctx->irqs, ctx->afu->adapter); + cxl_ops->release_irq_ranges(&ctx->irqs, ctx->afu->adapter); afu_irq_name_free(ctx); return -ENOMEM; } @@ -319,7 +322,7 @@ void afu_release_irqs(struct cxl_context *ctx, void *cookie) } afu_irq_name_free(ctx); - cxl_release_irq_ranges(&ctx->irqs, ctx->afu->adapter); + cxl_ops->release_irq_ranges(&ctx->irqs, ctx->afu->adapter); ctx->irq_count = 0; } diff --git a/drivers/misc/cxl/main.c b/drivers/misc/cxl/main.c index 90933eb80fa3..a9051512198c 100644 --- a/drivers/misc/cxl/main.c +++ b/drivers/misc/cxl/main.c @@ -32,6 +32,8 @@ uint cxl_verbose; module_param_named(verbose, cxl_verbose, uint, 0600); MODULE_PARM_DESC(verbose, "Enable verbose dmesg output"); +const struct cxl_backend_ops *cxl_ops; + int cxl_afu_slbia(struct cxl_afu *afu) { unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT); @@ -46,7 +48,7 @@ int cxl_afu_slbia(struct cxl_afu *afu) /* If the adapter has gone down, we can assume that we * will PERST it and that will invalidate everything. */ - if (!cxl_adapter_link_ok(afu->adapter)) + if (!cxl_ops->link_ok(afu->adapter)) return -EIO; cpu_relax(); } @@ -228,7 +230,7 @@ struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice) afu->adapter = adapter; afu->dev.parent = &adapter->dev; - afu->dev.release = cxl_release_afu; + afu->dev.release = cxl_ops->release_afu; afu->slice = slice; idr_init(&afu->contexts_idr); mutex_init(&afu->contexts_lock); @@ -244,10 +246,10 @@ struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice) int cxl_afu_select_best_mode(struct cxl_afu *afu) { if (afu->modes_supported & CXL_MODE_DIRECTED) - return cxl_afu_activate_mode(afu, CXL_MODE_DIRECTED); + return cxl_ops->afu_activate_mode(afu, CXL_MODE_DIRECTED); if (afu->modes_supported & CXL_MODE_DEDICATED) - return cxl_afu_activate_mode(afu, CXL_MODE_DEDICATED); + return cxl_ops->afu_activate_mode(afu, CXL_MODE_DEDICATED); dev_warn(&afu->dev, "No supported programming modes available\n"); /* We don't fail this so the user can inspect sysfs */ @@ -269,6 +271,7 @@ static int __init init_cxl(void) if ((rc = register_cxl_calls(&cxl_calls))) goto err; + cxl_ops = &cxl_native_ops; if ((rc = pci_register_driver(&cxl_pci_driver))) goto err1; diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c index 3103e3327ea6..16d3b1a7d62c 100644 --- a/drivers/misc/cxl/native.c +++ b/drivers/misc/cxl/native.c @@ -42,7 +42,7 @@ static int afu_control(struct cxl_afu *afu, u64 command, goto out; } - if (!cxl_adapter_link_ok(afu->adapter)) { + if (!cxl_ops->link_ok(afu->adapter)) { afu->enabled = enabled; rc = -EIO; goto out; @@ -80,7 +80,7 @@ int cxl_afu_disable(struct cxl_afu *afu) } /* This will disable as well as reset */ -int __cxl_afu_reset(struct cxl_afu *afu) +static int __cxl_afu_reset(struct cxl_afu *afu) { pr_devel("AFU reset request\n"); @@ -90,9 +90,9 @@ int __cxl_afu_reset(struct cxl_afu *afu) false); } -int cxl_afu_check_and_enable(struct cxl_afu *afu) +static int cxl_afu_check_and_enable(struct cxl_afu *afu) { - if (!cxl_adapter_link_ok(afu->adapter)) { + if (!cxl_ops->link_ok(afu->adapter)) { WARN(1, "Refusing to enable afu while link down!\n"); return -EIO; } @@ -114,7 +114,7 @@ int cxl_psl_purge(struct cxl_afu *afu) pr_devel("PSL purge request\n"); - if (!cxl_adapter_link_ok(afu->adapter)) { + if (!cxl_ops->link_ok(afu->adapter)) { dev_warn(&afu->dev, "PSL Purge called with link down, ignoring\n"); rc = -EIO; goto out; @@ -136,7 +136,7 @@ int cxl_psl_purge(struct cxl_afu *afu) rc = -EBUSY; goto out; } - if (!cxl_adapter_link_ok(afu->adapter)) { + if (!cxl_ops->link_ok(afu->adapter)) { rc = -EIO; goto out; } @@ -247,7 +247,7 @@ int cxl_tlb_slb_invalidate(struct cxl *adapter) dev_warn(&adapter->dev, "WARNING: CXL adapter wide TLBIA timed out!\n"); return -EBUSY; } - if (!cxl_adapter_link_ok(adapter)) + if (!cxl_ops->link_ok(adapter)) return -EIO; cpu_relax(); } @@ -258,7 +258,7 @@ int cxl_tlb_slb_invalidate(struct cxl *adapter) dev_warn(&adapter->dev, "WARNING: CXL adapter wide SLBIA timed out!\n"); return -EBUSY; } - if (!cxl_adapter_link_ok(adapter)) + if (!cxl_ops->link_ok(adapter)) return -EIO; cpu_relax(); } @@ -299,7 +299,7 @@ static void slb_invalid(struct cxl_context *ctx) cxl_p1_write(adapter, CXL_PSL_SLBIA, CXL_TLB_SLB_IQ_LPIDPID); while (1) { - if (!cxl_adapter_link_ok(adapter)) + if (!cxl_ops->link_ok(adapter)) break; slbia = cxl_p1_read(adapter, CXL_PSL_SLBIA); if (!(slbia & CXL_TLB_SLB_P)) @@ -330,7 +330,7 @@ static int do_process_element_cmd(struct cxl_context *ctx, rc = -EBUSY; goto out; } - if (!cxl_adapter_link_ok(ctx->afu->adapter)) { + if (!cxl_ops->link_ok(ctx->afu->adapter)) { dev_warn(&ctx->afu->dev, "WARNING: Device link down, aborting Process Element Command!\n"); rc = -EIO; goto out; @@ -386,7 +386,7 @@ static int terminate_process_element(struct cxl_context *ctx) * should always succeed: it's not running if the hw has gone * away and is being reset. */ - if (cxl_adapter_link_ok(ctx->afu->adapter)) + if (cxl_ops->link_ok(ctx->afu->adapter)) rc = do_process_element_cmd(ctx, CXL_SPA_SW_CMD_TERMINATE, CXL_PE_SOFTWARE_STATE_V | CXL_PE_SOFTWARE_STATE_T); ctx->elem->software_state = 0; /* Remove Valid bit */ @@ -405,7 +405,7 @@ static int remove_process_element(struct cxl_context *ctx) /* We could be asked to remove when the hw is down. Again, if * the hw is down, the PE is gone, so we succeed. */ - if (cxl_adapter_link_ok(ctx->afu->adapter)) + if (cxl_ops->link_ok(ctx->afu->adapter)) rc = do_process_element_cmd(ctx, CXL_SPA_SW_CMD_REMOVE, 0); if (!rc) @@ -531,7 +531,7 @@ static int attach_afu_directed(struct cxl_context *ctx, u64 wed, u64 amr) ctx->elem->common.wed = cpu_to_be64(wed); /* first guy needs to enable */ - if ((result = cxl_afu_check_and_enable(ctx->afu))) + if ((result = cxl_ops->afu_check_and_enable(ctx->afu))) return result; return add_process_element(ctx); @@ -547,7 +547,7 @@ static int deactivate_afu_directed(struct cxl_afu *afu) cxl_sysfs_afu_m_remove(afu); cxl_chardev_afu_remove(afu); - __cxl_afu_reset(afu); + cxl_ops->afu_reset(afu); cxl_afu_disable(afu); cxl_psl_purge(afu); @@ -611,7 +611,7 @@ static int attach_dedicated(struct cxl_context *ctx, u64 wed, u64 amr) /* master only context for dedicated */ cxl_assign_psn_space(ctx); - if ((rc = __cxl_afu_reset(afu))) + if ((rc = cxl_ops->afu_reset(afu))) return rc; cxl_p2n_write(afu, CXL_PSL_WED_An, wed); @@ -631,7 +631,7 @@ static int deactivate_dedicated_process(struct cxl_afu *afu) return 0; } -int _cxl_afu_deactivate_mode(struct cxl_afu *afu, int mode) +static int cxl_afu_deactivate_mode(struct cxl_afu *afu, int mode) { if (mode == CXL_MODE_DIRECTED) return deactivate_afu_directed(afu); @@ -640,19 +640,14 @@ int _cxl_afu_deactivate_mode(struct cxl_afu *afu, int mode) return 0; } -int cxl_afu_deactivate_mode(struct cxl_afu *afu) -{ - return _cxl_afu_deactivate_mode(afu, afu->current_mode); -} - -int cxl_afu_activate_mode(struct cxl_afu *afu, int mode) +static int cxl_afu_activate_mode(struct cxl_afu *afu, int mode) { if (!mode) return 0; if (!(mode & afu->modes_supported)) return -EINVAL; - if (!cxl_adapter_link_ok(afu->adapter)) { + if (!cxl_ops->link_ok(afu->adapter)) { WARN(1, "Device link is down, refusing to activate!\n"); return -EIO; } @@ -665,9 +660,9 @@ int cxl_afu_activate_mode(struct cxl_afu *afu, int mode) return -EINVAL; } -int cxl_attach_process(struct cxl_context *ctx, bool kernel, u64 wed, u64 amr) +static int cxl_attach_process(struct cxl_context *ctx, bool kernel, u64 wed, u64 amr) { - if (!cxl_adapter_link_ok(ctx->afu->adapter)) { + if (!cxl_ops->link_ok(ctx->afu->adapter)) { WARN(1, "Device link is down, refusing to attach process!\n"); return -EIO; } @@ -684,7 +679,7 @@ int cxl_attach_process(struct cxl_context *ctx, bool kernel, u64 wed, u64 amr) static inline int detach_process_native_dedicated(struct cxl_context *ctx) { - __cxl_afu_reset(ctx->afu); + cxl_ops->afu_reset(ctx->afu); cxl_afu_disable(ctx->afu); cxl_psl_purge(ctx->afu); return 0; @@ -702,7 +697,7 @@ static inline int detach_process_native_afu_directed(struct cxl_context *ctx) return 0; } -int cxl_detach_process(struct cxl_context *ctx) +static int cxl_detach_process(struct cxl_context *ctx) { trace_cxl_detach(ctx); @@ -719,7 +714,7 @@ static int cxl_get_irq(struct cxl_afu *afu, struct cxl_irq_info *info) /* If the adapter has gone away, we can't get any meaningful * information. */ - if (!cxl_adapter_link_ok(afu->adapter)) + if (!cxl_ops->link_ok(afu->adapter)) return -EIO; info->dsisr = cxl_p2n_read(afu, CXL_PSL_DSISR_An); @@ -734,7 +729,7 @@ static int cxl_get_irq(struct cxl_afu *afu, struct cxl_irq_info *info) return 0; } -irqreturn_t handle_psl_slice_error(struct cxl_context *ctx, u64 dsisr, u64 errstat) +static irqreturn_t handle_psl_slice_error(struct cxl_context *ctx, u64 dsisr, u64 errstat) { u64 fir1, fir2, fir_slice, serr, afu_debug; @@ -754,7 +749,7 @@ irqreturn_t handle_psl_slice_error(struct cxl_context *ctx, u64 dsisr, u64 errst dev_crit(&ctx->afu->dev, "STOPPING CXL TRACE\n"); cxl_stop_trace(ctx->afu->adapter); - return cxl_ack_irq(ctx, 0, errstat); + return cxl_ops->ack_irq(ctx, 0, errstat); } static irqreturn_t fail_psl_irq(struct cxl_afu *afu, struct cxl_irq_info *irq_info) @@ -868,7 +863,7 @@ void cxl_release_psl_err_irq(struct cxl *adapter) cxl_p1_write(adapter, CXL_PSL_ErrIVTE, 0x0000000000000000); cxl_unmap_irq(adapter->err_virq, adapter); - cxl_release_one_irq(adapter, adapter->err_hwirq); + cxl_ops->release_one_irq(adapter, adapter->err_hwirq); kfree(adapter->irq_name); } @@ -904,7 +899,7 @@ void cxl_release_serr_irq(struct cxl_afu *afu) cxl_p1n_write(afu, CXL_PSL_SERR_An, 0x0000000000000000); cxl_unmap_irq(afu->serr_virq, afu); - cxl_release_one_irq(afu->adapter, afu->serr_hwirq); + cxl_ops->release_one_irq(afu->adapter, afu->serr_hwirq); kfree(afu->err_irq_name); } @@ -932,7 +927,7 @@ void cxl_release_psl_irq(struct cxl_afu *afu) return; cxl_unmap_irq(afu->psl_virq, afu); - cxl_release_one_irq(afu->adapter, afu->psl_hwirq); + cxl_ops->release_one_irq(afu->adapter, afu->psl_hwirq); kfree(afu->psl_irq_name); } @@ -950,7 +945,7 @@ static void recover_psl_err(struct cxl_afu *afu, u64 errstat) cxl_p2n_write(afu, CXL_PSL_ErrStat_An, errstat); } -int cxl_ack_irq(struct cxl_context *ctx, u64 tfc, u64 psl_reset_mask) +static int cxl_ack_irq(struct cxl_context *ctx, u64 tfc, u64 psl_reset_mask) { trace_cxl_psl_irq_ack(ctx, tfc); if (tfc) @@ -966,38 +961,74 @@ int cxl_check_error(struct cxl_afu *afu) return (cxl_p1n_read(afu, CXL_PSL_SCNTL_An) == ~0ULL); } -u64 cxl_afu_cr_read64(struct cxl_afu *afu, int cr, u64 off) +static int cxl_afu_cr_read64(struct cxl_afu *afu, int cr, u64 off, u64 *out) { - if (likely(cxl_adapter_link_ok(afu->adapter))) - return in_le64((afu)->afu_desc_mmio + (afu)->crs_offset + - ((cr) * (afu)->crs_len) + (off)); - else - return ~0ULL; + if (unlikely(!cxl_ops->link_ok(afu->adapter))) + return -EIO; + if (unlikely(off >= afu->crs_len)) + return -ERANGE; + *out = in_le64(afu->afu_desc_mmio + afu->crs_offset + + (cr * afu->crs_len) + off); + return 0; } -u32 cxl_afu_cr_read32(struct cxl_afu *afu, int cr, u64 off) +static int cxl_afu_cr_read32(struct cxl_afu *afu, int cr, u64 off, u32 *out) { - if (likely(cxl_adapter_link_ok(afu->adapter))) - return in_le32((afu)->afu_desc_mmio + (afu)->crs_offset + - ((cr) * (afu)->crs_len) + (off)); - else - return 0xffffffff; + if (unlikely(!cxl_ops->link_ok(afu->adapter))) + return -EIO; + if (unlikely(off >= afu->crs_len)) + return -ERANGE; + *out = in_le32(afu->afu_desc_mmio + afu->crs_offset + + (cr * afu->crs_len) + off); + return 0; } -u16 cxl_afu_cr_read16(struct cxl_afu *afu, int cr, u64 off) +static int cxl_afu_cr_read16(struct cxl_afu *afu, int cr, u64 off, u16 *out) { u64 aligned_off = off & ~0x3L; u32 val; + int rc; - val = cxl_afu_cr_read32(afu, cr, aligned_off); - return (val >> ((off & 0x2) * 8)) & 0xffff; + rc = cxl_afu_cr_read32(afu, cr, aligned_off, &val); + if (!rc) + *out = (val >> ((off & 0x3) * 8)) & 0xffff; + return rc; } -u8 cxl_afu_cr_read8(struct cxl_afu *afu, int cr, u64 off) +static int cxl_afu_cr_read8(struct cxl_afu *afu, int cr, u64 off, u8 *out) { u64 aligned_off = off & ~0x3L; u32 val; + int rc; - val = cxl_afu_cr_read32(afu, cr, aligned_off); - return (val >> ((off & 0x3) * 8)) & 0xff; + rc = cxl_afu_cr_read32(afu, cr, aligned_off, &val); + if (!rc) + *out = (val >> ((off & 0x3) * 8)) & 0xff; + return rc; } + +const struct cxl_backend_ops cxl_native_ops = { + .module = THIS_MODULE, + .adapter_reset = cxl_reset, + .alloc_one_irq = cxl_alloc_one_irq, + .release_one_irq = cxl_release_one_irq, + .alloc_irq_ranges = cxl_alloc_irq_ranges, + .release_irq_ranges = cxl_release_irq_ranges, + .setup_irq = cxl_setup_irq, + .handle_psl_slice_error = handle_psl_slice_error, + .psl_interrupt = NULL, + .ack_irq = cxl_ack_irq, + .attach_process = cxl_attach_process, + .detach_process = cxl_detach_process, + .link_ok = cxl_adapter_link_ok, + .release_afu = cxl_release_afu, + .afu_read_err_buffer = cxl_afu_read_err_buffer, + .afu_check_and_enable = cxl_afu_check_and_enable, + .afu_activate_mode = cxl_afu_activate_mode, + .afu_deactivate_mode = cxl_afu_deactivate_mode, + .afu_reset = __cxl_afu_reset, + .afu_cr_read8 = cxl_afu_cr_read8, + .afu_cr_read16 = cxl_afu_cr_read16, + .afu_cr_read32 = cxl_afu_cr_read32, + .afu_cr_read64 = cxl_afu_cr_read64, +}; diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index c6279e5068b2..6e2c2748dd4f 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -646,7 +646,8 @@ static int cxl_read_afu_descriptor(struct cxl_afu *afu) static int cxl_afu_descriptor_looks_ok(struct cxl_afu *afu) { - int i; + int i, rc; + u32 val; if (afu->psa && afu->adapter->ps_size < (afu->pp_offset + afu->pp_size*afu->max_procs_virtualised)) { @@ -658,7 +659,8 @@ static int cxl_afu_descriptor_looks_ok(struct cxl_afu *afu) dev_warn(&afu->dev, "AFU uses < PAGE_SIZE per-process PSA!"); for (i = 0; i < afu->crs_num; i++) { - if ((cxl_afu_cr_read32(afu, i, 0) == 0)) { + rc = cxl_ops->afu_cr_read32(afu, i, 0, &val); + if (rc || val == 0) { dev_err(&afu->dev, "ABORTING: AFU configuration record %i is invalid\n", i); return -EINVAL; } @@ -679,7 +681,7 @@ static int sanitise_afu_regs(struct cxl_afu *afu) reg = cxl_p2n_read(afu, CXL_AFU_Cntl_An); if ((reg & CXL_AFU_Cntl_An_ES_MASK) != CXL_AFU_Cntl_An_ES_Disabled) { dev_warn(&afu->dev, "WARNING: AFU was not disabled: %#016llx\n", reg); - if (__cxl_afu_reset(afu)) + if (cxl_ops->afu_reset(afu)) return -EIO; if (cxl_afu_disable(afu)) return -EIO; @@ -775,7 +777,7 @@ static int cxl_configure_afu(struct cxl_afu *afu, struct cxl *adapter, struct pc goto err1; /* We need to reset the AFU before we can read the AFU descriptor */ - if ((rc = __cxl_afu_reset(afu))) + if ((rc = cxl_ops->afu_reset(afu))) goto err1; if (cxl_verbose) @@ -876,7 +878,7 @@ static void cxl_remove_afu(struct cxl_afu *afu) spin_unlock(&afu->adapter->afu_list_lock); cxl_context_detach_all(afu); - cxl_afu_deactivate_mode(afu); + cxl_ops->afu_deactivate_mode(afu, afu->current_mode); cxl_deconfigure_afu(afu); device_unregister(&afu->dev); @@ -1398,7 +1400,7 @@ static pci_ers_result_t cxl_pci_error_detected(struct pci_dev *pdev, return result; cxl_context_detach_all(afu); - cxl_afu_deactivate_mode(afu); + cxl_ops->afu_deactivate_mode(afu, afu->current_mode); cxl_deconfigure_afu(afu); } cxl_deconfigure_adapter(adapter); @@ -1445,7 +1447,7 @@ static pci_ers_result_t cxl_pci_slot_reset(struct pci_dev *pdev) afu_dev->dev.archdata.cxl_ctx = ctx; - if (cxl_afu_check_and_enable(afu)) + if (cxl_ops->afu_check_and_enable(afu)) goto err; afu_dev->error_state = pci_channel_io_normal; diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c index 02006f7109a8..300eafe4ed43 100644 --- a/drivers/misc/cxl/sysfs.c +++ b/drivers/misc/cxl/sysfs.c @@ -69,7 +69,7 @@ static ssize_t reset_adapter_store(struct device *device, if ((rc != 1) || (val != 1)) return -EINVAL; - if ((rc = cxl_reset(adapter))) + if ((rc = cxl_ops->adapter_reset(adapter))) return rc; return count; } @@ -211,7 +211,7 @@ static ssize_t reset_store_afu(struct device *device, goto err; } - if ((rc = __cxl_afu_reset(afu))) + if ((rc = cxl_ops->afu_reset(afu))) goto err; rc = count; @@ -348,7 +348,7 @@ static ssize_t mode_store(struct device *device, struct device_attribute *attr, } /* - * cxl_afu_deactivate_mode needs to be done outside the lock, prevent + * afu_deactivate_mode needs to be done outside the lock, prevent * other contexts coming in before we are ready: */ old_mode = afu->current_mode; @@ -357,9 +357,9 @@ static ssize_t mode_store(struct device *device, struct device_attribute *attr, mutex_unlock(&afu->contexts_lock); - if ((rc = _cxl_afu_deactivate_mode(afu, old_mode))) + if ((rc = cxl_ops->afu_deactivate_mode(afu, old_mode))) return rc; - if ((rc = cxl_afu_activate_mode(afu, mode))) + if ((rc = cxl_ops->afu_activate_mode(afu, mode))) return rc; return count; @@ -389,7 +389,7 @@ static ssize_t afu_eb_read(struct file *filp, struct kobject *kobj, struct cxl_afu *afu = to_cxl_afu(container_of(kobj, struct device, kobj)); - return cxl_afu_read_err_buffer(afu, buf, off, count); + return cxl_ops->afu_read_err_buffer(afu, buf, off, count); } static struct device_attribute afu_attrs[] = { @@ -469,10 +469,12 @@ static ssize_t afu_read_config(struct file *filp, struct kobject *kobj, struct afu_config_record *cr = to_cr(kobj); struct cxl_afu *afu = to_cxl_afu(container_of(kobj->parent, struct device, kobj)); - u64 i, j, val; + u64 i, j, val, rc; for (i = 0; i < count;) { - val = cxl_afu_cr_read64(afu, cr->cr, off & ~0x7); + rc = cxl_ops->afu_cr_read64(afu, cr->cr, off & ~0x7, &val); + if (rc) + val = ~0ULL; for (j = off & 0x7; j < 8 && i < count; i++, j++, off++) buf[i] = (val >> (j * 8)) & 0xff; } @@ -517,9 +519,17 @@ static struct afu_config_record *cxl_sysfs_afu_new_cr(struct cxl_afu *afu, int c return ERR_PTR(-ENOMEM); cr->cr = cr_idx; - cr->device = cxl_afu_cr_read16(afu, cr_idx, PCI_DEVICE_ID); - cr->vendor = cxl_afu_cr_read16(afu, cr_idx, PCI_VENDOR_ID); - cr->class = cxl_afu_cr_read32(afu, cr_idx, PCI_CLASS_REVISION) >> 8; + + rc = cxl_ops->afu_cr_read16(afu, cr_idx, PCI_DEVICE_ID, &cr->device); + if (rc) + goto err; + rc = cxl_ops->afu_cr_read16(afu, cr_idx, PCI_VENDOR_ID, &cr->vendor); + if (rc) + goto err; + rc = cxl_ops->afu_cr_read32(afu, cr_idx, PCI_CLASS_REVISION, &cr->class); + if (rc) + goto err; + cr->class >>= 8; /* * Export raw AFU PCIe like config record. For now this is read only by diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c index cbd4331fb45c..e8a8eed6f006 100644 --- a/drivers/misc/cxl/vphb.c +++ b/drivers/misc/cxl/vphb.c @@ -49,7 +49,7 @@ static bool cxl_pci_enable_device_hook(struct pci_dev *dev) phb = pci_bus_to_host(dev->bus); afu = (struct cxl_afu *)phb->private_data; - if (!cxl_adapter_link_ok(afu->adapter)) { + if (!cxl_ops->link_ok(afu->adapter)) { dev_warn(&dev->dev, "%s: Device link is down, refusing to enable AFU\n", __func__); return false; } @@ -66,7 +66,7 @@ static bool cxl_pci_enable_device_hook(struct pci_dev *dev) return false; dev->dev.archdata.cxl_ctx = ctx; - return (cxl_afu_check_and_enable(afu) == 0); + return (cxl_ops->afu_check_and_enable(afu) == 0); } static void cxl_pci_disable_device(struct pci_dev *dev) @@ -161,7 +161,7 @@ static inline bool cxl_config_link_ok(struct pci_bus *bus) if (phb == NULL) return false; afu = (struct cxl_afu *)phb->private_data; - return cxl_adapter_link_ok(afu->adapter); + return cxl_ops->link_ok(afu->adapter); } static int cxl_pcie_read_config(struct pci_bus *bus, unsigned int devfn, |
