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cxl: Update implementation service layer

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The service layer API (in cxl.h) lists some low-level functions whose
implementation is different on PSL8, PSL9 and XSL:
- Init implementation for the adapter and the afu.
- Invalidate TLB/SLB.
- Attach process for dedicated/directed models.
- Handle psl interrupts.
- Debug registers for the adapter and the afu.
- Traces.
Each environment implements its own functions, and the common code uses
them through function pointers, defined in cxl_service_layer_ops.

Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Lombard
2017-04-07 16:11:56 +02:00
committed by Michael Ellerman
parent 6dd2d23403
commit bdd2e71506
6 changed files with 110 additions and 59 deletions
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40
drivers/misc/cxl/cxl.h
View File

@ -553,13 +553,23 @@ struct cxl_context {
struct mm_struct *mm;
};
struct cxl_irq_info;
struct cxl_service_layer_ops {
int (*adapter_regs_init)(struct cxl *adapter, struct pci_dev *dev);
int (*invalidate_all)(struct cxl *adapter);
int (*afu_regs_init)(struct cxl_afu *afu);
int (*sanitise_afu_regs)(struct cxl_afu *afu);
int (*register_serr_irq)(struct cxl_afu *afu);
void (*release_serr_irq)(struct cxl_afu *afu);
void (*debugfs_add_adapter_sl_regs)(struct cxl *adapter, struct dentry *dir);
void (*debugfs_add_afu_sl_regs)(struct cxl_afu *afu, struct dentry *dir);
irqreturn_t (*handle_interrupt)(int irq, struct cxl_context *ctx, struct cxl_irq_info *irq_info);
irqreturn_t (*fail_irq)(struct cxl_afu *afu, struct cxl_irq_info *irq_info);
int (*activate_dedicated_process)(struct cxl_afu *afu);
int (*attach_afu_directed)(struct cxl_context *ctx, u64 wed, u64 amr);
int (*attach_dedicated_process)(struct cxl_context *ctx, u64 wed, u64 amr);
void (*update_dedicated_ivtes)(struct cxl_context *ctx);
void (*debugfs_add_adapter_regs)(struct cxl *adapter, struct dentry *dir);
void (*debugfs_add_afu_regs)(struct cxl_afu *afu, struct dentry *dir);
void (*psl_irq_dump_registers)(struct cxl_context *ctx);
void (*err_irq_dump_registers)(struct cxl *adapter);
void (*debugfs_stop_trace)(struct cxl *adapter);
@ -803,6 +813,11 @@ 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);
int cxl_attach_afu_directed_psl(struct cxl_context *ctx, u64 wed, u64 amr);
int cxl_activate_dedicated_process_psl(struct cxl_afu *afu);
int cxl_attach_dedicated_process_psl(struct cxl_context *ctx, u64 wed, u64 amr);
void cxl_update_dedicated_ivtes_psl(struct cxl_context *ctx);
#ifdef CONFIG_DEBUG_FS
int cxl_debugfs_init(void);
@ -811,10 +826,10 @@ 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(struct cxl *cxl);
void cxl_debugfs_add_adapter_psl_regs(struct cxl *adapter, struct dentry *dir);
void cxl_debugfs_add_adapter_xsl_regs(struct cxl *adapter, struct dentry *dir);
void cxl_debugfs_add_afu_psl_regs(struct cxl_afu *afu, struct dentry *dir);
void cxl_stop_trace_psl(struct cxl *cxl);
void cxl_debugfs_add_adapter_regs_psl(struct cxl *adapter, struct dentry *dir);
void cxl_debugfs_add_adapter_regs_xsl(struct cxl *adapter, struct dentry *dir);
void cxl_debugfs_add_afu_regs_psl(struct cxl_afu *afu, struct dentry *dir);
#else /* CONFIG_DEBUG_FS */
@ -849,17 +864,17 @@ static inline void cxl_stop_trace(struct cxl *cxl)
{
}
static inline void cxl_debugfs_add_adapter_psl_regs(struct cxl *adapter,
static inline void cxl_debugfs_add_adapter_regs_psl(struct cxl *adapter,
struct dentry *dir)
{
}
static inline void cxl_debugfs_add_adapter_xsl_regs(struct cxl *adapter,
static inline void cxl_debugfs_add_adapter_regs_xsl(struct cxl *adapter,
struct dentry *dir)
{
}
static inline void cxl_debugfs_add_afu_psl_regs(struct cxl_afu *afu, struct dentry *dir)
static inline void cxl_debugfs_add_afu_regs_psl(struct cxl_afu *afu, struct dentry *dir)
{
}
@ -904,19 +919,20 @@ struct cxl_irq_info {
};
void cxl_assign_psn_space(struct cxl_context *ctx);
irqreturn_t cxl_irq(int irq, struct cxl_context *ctx, struct cxl_irq_info *irq_info);
int cxl_invalidate_all_psl(struct cxl *adapter);
irqreturn_t cxl_irq_psl(int irq, struct cxl_context *ctx, struct cxl_irq_info *irq_info);
irqreturn_t cxl_fail_irq_psl(struct cxl_afu *afu, struct cxl_irq_info *irq_info);
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_check_error(struct cxl_afu *afu);
int cxl_afu_slbia(struct cxl_afu *afu);
int cxl_tlb_slb_invalidate(struct cxl *adapter);
int cxl_data_cache_flush(struct cxl *adapter);
int cxl_afu_disable(struct cxl_afu *afu);
int cxl_psl_purge(struct cxl_afu *afu);
void cxl_native_psl_irq_dump_regs(struct cxl_context *ctx);
void cxl_native_irq_dump_regs_psl(struct cxl_context *ctx);
void cxl_native_err_irq_dump_regs(struct cxl *adapter);
int cxl_pci_vphb_add(struct cxl_afu *afu);
void cxl_pci_vphb_remove(struct cxl_afu *afu);