47 static inline void msi_writel(struct altera_msi *msi, const u32 value,  in msi_writel()  argument
50 	writel_relaxed(value, msi->csr_base + reg);  in msi_writel()
53 static inline u32 msi_readl(struct altera_msi *msi, const u32 reg)  in msi_readl()  argument
55 	return readl_relaxed(msi->csr_base + reg);  in msi_readl()
61 	struct altera_msi *msi;  in altera_msi_isr()  local
68 	msi = irq_desc_get_handler_data(desc);  in altera_msi_isr()
69 	num_of_vectors = msi->num_of_vectors;  in altera_msi_isr()
71 	while ((status = msi_readl(msi, MSI_STATUS)) != 0) {  in altera_msi_isr()
72 		for_each_set_bit(bit, &status, msi->num_of_vectors) {  in altera_msi_isr()
74 			readl_relaxed(msi->vector_base + (bit * sizeof(u32)));  in altera_msi_isr()
76 			virq = irq_find_mapping(msi->inner_domain, bit);  in altera_msi_isr()
80 				dev_err(&msi->pdev->dev, "unexpected MSI\n");  in altera_msi_isr()
101 	struct altera_msi *msi = irq_data_get_irq_chip_data(data);  in altera_compose_msi_msg()  local
102 	phys_addr_t addr = msi->vector_phy + (data->hwirq * sizeof(u32));  in altera_compose_msi_msg()
108 	dev_dbg(&msi->pdev->dev, "msi#%d address_hi %#x address_lo %#x\n",  in altera_compose_msi_msg()
127 	struct altera_msi *msi = domain->host_data;  in altera_irq_domain_alloc()  local
132 	mutex_lock(&msi->lock);  in altera_irq_domain_alloc()
134 	bit = find_first_zero_bit(msi->used, msi->num_of_vectors);  in altera_irq_domain_alloc()
135 	if (bit >= msi->num_of_vectors) {  in altera_irq_domain_alloc()
136 		mutex_unlock(&msi->lock);  in altera_irq_domain_alloc()
140 	set_bit(bit, msi->used);  in altera_irq_domain_alloc()
142 	mutex_unlock(&msi->lock);  in altera_irq_domain_alloc()
148 	mask = msi_readl(msi, MSI_INTMASK);  in altera_irq_domain_alloc()
150 	msi_writel(msi, mask, MSI_INTMASK);  in altera_irq_domain_alloc()
159 	struct altera_msi *msi = irq_data_get_irq_chip_data(d);  in altera_irq_domain_free()  local
162 	mutex_lock(&msi->lock);  in altera_irq_domain_free()
164 	if (!test_bit(d->hwirq, msi->used)) {  in altera_irq_domain_free()
165 		dev_err(&msi->pdev->dev, "trying to free unused MSI#%lu\n",  in altera_irq_domain_free()
168 		__clear_bit(d->hwirq, msi->used);  in altera_irq_domain_free()
169 		mask = msi_readl(msi, MSI_INTMASK);  in altera_irq_domain_free()
171 		msi_writel(msi, mask, MSI_INTMASK);  in altera_irq_domain_free()
174 	mutex_unlock(&msi->lock);  in altera_irq_domain_free()
182 static int altera_allocate_domains(struct altera_msi *msi)  in altera_allocate_domains()  argument
184 	struct fwnode_handle *fwnode = of_node_to_fwnode(msi->pdev->dev.of_node);  in altera_allocate_domains()
186 	msi->inner_domain = irq_domain_add_linear(NULL, msi->num_of_vectors,  in altera_allocate_domains()
187 					     &msi_domain_ops, msi);  in altera_allocate_domains()
188 	if (!msi->inner_domain) {  in altera_allocate_domains()
189 		dev_err(&msi->pdev->dev, "failed to create IRQ domain\n");  in altera_allocate_domains()
193 	msi->msi_domain = pci_msi_create_irq_domain(fwnode,  in altera_allocate_domains()
194 				&altera_msi_domain_info, msi->inner_domain);  in altera_allocate_domains()
195 	if (!msi->msi_domain) {  in altera_allocate_domains()
196 		dev_err(&msi->pdev->dev, "failed to create MSI domain\n");  in altera_allocate_domains()
197 		irq_domain_remove(msi->inner_domain);  in altera_allocate_domains()
204 static void altera_free_domains(struct altera_msi *msi)  in altera_free_domains()  argument
206 	irq_domain_remove(msi->msi_domain);  in altera_free_domains()
207 	irq_domain_remove(msi->inner_domain);  in altera_free_domains()
212 	struct altera_msi *msi = platform_get_drvdata(pdev);  in altera_msi_remove()  local
214 	msi_writel(msi, 0, MSI_INTMASK);  in altera_msi_remove()
215 	irq_set_chained_handler(msi->irq, NULL);  in altera_msi_remove()
216 	irq_set_handler_data(msi->irq, NULL);  in altera_msi_remove()
218 	altera_free_domains(msi);  in altera_msi_remove()
226 	struct altera_msi *msi;  in altera_msi_probe()  local
231 	msi = devm_kzalloc(&pdev->dev, sizeof(struct altera_msi),  in altera_msi_probe()
233 	if (!msi)  in altera_msi_probe()
236 	mutex_init(&msi->lock);  in altera_msi_probe()
237 	msi->pdev = pdev;  in altera_msi_probe()
245 	msi->csr_base = devm_ioremap_resource(&pdev->dev, res);  in altera_msi_probe()
246 	if (IS_ERR(msi->csr_base)) {  in altera_msi_probe()
248 		return PTR_ERR(msi->csr_base);  in altera_msi_probe()
258 	msi->vector_base = devm_ioremap_resource(&pdev->dev, res);  in altera_msi_probe()
259 	if (IS_ERR(msi->vector_base)) {  in altera_msi_probe()
261 		return PTR_ERR(msi->vector_base);  in altera_msi_probe()
264 	msi->vector_phy = res->start;  in altera_msi_probe()
266 	if (of_property_read_u32(np, "num-vectors", &msi->num_of_vectors)) {  in altera_msi_probe()
271 	ret = altera_allocate_domains(msi);  in altera_msi_probe()
275 	msi->irq = platform_get_irq(pdev, 0);  in altera_msi_probe()
276 	if (msi->irq <= 0) {  in altera_msi_probe()
277 		dev_err(&pdev->dev, "failed to map IRQ: %d\n", msi->irq);  in altera_msi_probe()
282 	irq_set_chained_handler_and_data(msi->irq, altera_msi_isr, msi);  in altera_msi_probe()
283 	platform_set_drvdata(pdev, msi);  in altera_msi_probe()