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cxl: Move common code away from bare-metal-specific files
Move around some functions which will be accessed from the bare-metal and guest environments. Code in native.c and pci.c is meant to be bare-metal specific. Other files contain code which may be shared with guests. Co-authored-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com> Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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949e9b827e
commit
8633186209
5 changed files with 84 additions and 75 deletions
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@ -526,6 +526,7 @@ void cxl_release_irq_ranges(struct cxl_irq_ranges *irqs, struct cxl *adapter);
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int cxl_setup_irq(struct cxl *adapter, unsigned int hwirq, unsigned int virq);
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int cxl_update_image_control(struct cxl *adapter);
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int cxl_reset(struct cxl *adapter);
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void cxl_release_afu(struct device *dev);
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/* common == phyp + powernv */
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struct cxl_process_element_common {
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@ -679,6 +680,9 @@ void cxl_sysfs_afu_remove(struct cxl_afu *afu);
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int cxl_sysfs_afu_m_add(struct cxl_afu *afu);
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void cxl_sysfs_afu_m_remove(struct cxl_afu *afu);
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struct cxl *cxl_alloc_adapter(void);
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struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice);
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int cxl_afu_activate_mode(struct cxl_afu *afu, int mode);
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int _cxl_afu_deactivate_mode(struct cxl_afu *afu, int mode);
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int cxl_afu_deactivate_mode(struct cxl_afu *afu);
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@ -733,6 +737,11 @@ struct cxl_irq_info {
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};
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void cxl_assign_psn_space(struct cxl_context *ctx);
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irqreturn_t cxl_irq(int irq, void *ctx, struct cxl_irq_info *irq_info);
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int cxl_register_one_irq(struct cxl *adapter, irq_handler_t handler,
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void *cookie, irq_hw_number_t *dest_hwirq,
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unsigned int *dest_virq, const char *name);
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int cxl_attach_process(struct cxl_context *ctx, bool kernel, u64 wed,
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u64 amr);
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int cxl_detach_process(struct cxl_context *ctx);
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@ -93,7 +93,7 @@ static irqreturn_t schedule_cxl_fault(struct cxl_context *ctx, u64 dsisr, u64 da
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return IRQ_HANDLED;
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}
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static irqreturn_t cxl_irq(int irq, void *data, struct cxl_irq_info *irq_info)
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irqreturn_t cxl_irq(int irq, void *data, struct cxl_irq_info *irq_info)
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{
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struct cxl_context *ctx = data;
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u64 dsisr, dar;
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@ -291,12 +291,12 @@ void cxl_unmap_irq(unsigned int virq, void *cookie)
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irq_dispose_mapping(virq);
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}
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static int cxl_register_one_irq(struct cxl *adapter,
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irq_handler_t handler,
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void *cookie,
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irq_hw_number_t *dest_hwirq,
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unsigned int *dest_virq,
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const char *name)
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int cxl_register_one_irq(struct cxl *adapter,
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irq_handler_t handler,
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void *cookie,
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irq_hw_number_t *dest_hwirq,
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unsigned int *dest_virq,
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const char *name)
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{
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int hwirq, virq;
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@ -32,6 +32,27 @@ uint cxl_verbose;
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module_param_named(verbose, cxl_verbose, uint, 0600);
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MODULE_PARM_DESC(verbose, "Enable verbose dmesg output");
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int cxl_afu_slbia(struct cxl_afu *afu)
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{
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unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT);
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pr_devel("cxl_afu_slbia issuing SLBIA command\n");
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cxl_p2n_write(afu, CXL_SLBIA_An, CXL_TLB_SLB_IQ_ALL);
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while (cxl_p2n_read(afu, CXL_SLBIA_An) & CXL_TLB_SLB_P) {
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if (time_after_eq(jiffies, timeout)) {
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dev_warn(&afu->dev, "WARNING: CXL AFU SLBIA timed out!\n");
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return -EBUSY;
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}
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/* If the adapter has gone down, we can assume that we
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* will PERST it and that will invalidate everything.
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*/
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if (!cxl_adapter_link_ok(afu->adapter))
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return -EIO;
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cpu_relax();
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}
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return 0;
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}
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static inline void _cxl_slbia(struct cxl_context *ctx, struct mm_struct *mm)
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{
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struct task_struct *task;
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@ -174,6 +195,52 @@ void cxl_remove_adapter_nr(struct cxl *adapter)
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idr_remove(&cxl_adapter_idr, adapter->adapter_num);
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}
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struct cxl *cxl_alloc_adapter(void)
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{
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struct cxl *adapter;
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if (!(adapter = kzalloc(sizeof(struct cxl), GFP_KERNEL)))
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return NULL;
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spin_lock_init(&adapter->afu_list_lock);
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if (cxl_alloc_adapter_nr(adapter))
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goto err1;
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if (dev_set_name(&adapter->dev, "card%i", adapter->adapter_num))
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goto err2;
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return adapter;
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err2:
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cxl_remove_adapter_nr(adapter);
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err1:
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kfree(adapter);
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return NULL;
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}
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struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice)
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{
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struct cxl_afu *afu;
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if (!(afu = kzalloc(sizeof(struct cxl_afu), GFP_KERNEL)))
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return NULL;
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afu->adapter = adapter;
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afu->dev.parent = &adapter->dev;
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afu->dev.release = cxl_release_afu;
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afu->slice = slice;
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idr_init(&afu->contexts_idr);
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mutex_init(&afu->contexts_lock);
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spin_lock_init(&afu->afu_cntl_lock);
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mutex_init(&afu->spa_mutex);
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afu->prefault_mode = CXL_PREFAULT_NONE;
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afu->irqs_max = afu->adapter->user_irqs;
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return afu;
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}
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int cxl_afu_select_best_mode(struct cxl_afu *afu)
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{
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if (afu->modes_supported & CXL_MODE_DIRECTED)
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@ -265,27 +265,6 @@ int cxl_tlb_slb_invalidate(struct cxl *adapter)
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return 0;
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}
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int cxl_afu_slbia(struct cxl_afu *afu)
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{
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unsigned long timeout = jiffies + (HZ * CXL_TIMEOUT);
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pr_devel("cxl_afu_slbia issuing SLBIA command\n");
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cxl_p2n_write(afu, CXL_SLBIA_An, CXL_TLB_SLB_IQ_ALL);
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while (cxl_p2n_read(afu, CXL_SLBIA_An) & CXL_TLB_SLB_P) {
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if (time_after_eq(jiffies, timeout)) {
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dev_warn(&afu->dev, "WARNING: CXL AFU SLBIA timed out!\n");
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return -EBUSY;
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}
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/* If the adapter has gone down, we can assume that we
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* will PERST it and that will invalidate everything.
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*/
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if (!cxl_adapter_link_ok(afu->adapter))
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return -EIO;
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cpu_relax();
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}
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return 0;
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}
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static int cxl_write_sstp(struct cxl_afu *afu, u64 sstp0, u64 sstp1)
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{
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int rc;
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@ -604,7 +604,7 @@ static void cxl_unmap_slice_regs(struct cxl_afu *afu)
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}
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}
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static void cxl_release_afu(struct device *dev)
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void cxl_release_afu(struct device *dev)
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{
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struct cxl_afu *afu = to_cxl_afu(dev);
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@ -616,28 +616,6 @@ static void cxl_release_afu(struct device *dev)
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kfree(afu);
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}
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static struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice)
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{
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struct cxl_afu *afu;
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if (!(afu = kzalloc(sizeof(struct cxl_afu), GFP_KERNEL)))
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return NULL;
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afu->adapter = adapter;
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afu->dev.parent = &adapter->dev;
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afu->dev.release = cxl_release_afu;
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afu->slice = slice;
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idr_init(&afu->contexts_idr);
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mutex_init(&afu->contexts_lock);
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spin_lock_init(&afu->afu_cntl_lock);
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mutex_init(&afu->spa_mutex);
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afu->prefault_mode = CXL_PREFAULT_NONE;
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afu->irqs_max = afu->adapter->user_irqs;
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return afu;
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}
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/* Expects AFU struct to have recently been zeroed out */
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static int cxl_read_afu_descriptor(struct cxl_afu *afu)
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{
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@ -1105,30 +1083,6 @@ static void cxl_release_adapter(struct device *dev)
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kfree(adapter);
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}
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static struct cxl *cxl_alloc_adapter(void)
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{
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struct cxl *adapter;
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if (!(adapter = kzalloc(sizeof(struct cxl), GFP_KERNEL)))
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return NULL;
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spin_lock_init(&adapter->afu_list_lock);
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if (cxl_alloc_adapter_nr(adapter))
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goto err1;
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if (dev_set_name(&adapter->dev, "card%i", adapter->adapter_num))
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goto err2;
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return adapter;
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err2:
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cxl_remove_adapter_nr(adapter);
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err1:
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kfree(adapter);
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return NULL;
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}
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#define CXL_PSL_ErrIVTE_tberror (0x1ull << (63-31))
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static int sanitise_adapter_regs(struct cxl *adapter)
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