2  * Adding PCI-E MSI support for PPC4XX SoCs.
26 #include <linux/msi.h>
87 	dev_dbg(&dev->dev, "PCIE-MSI:%s called. vec %x type %d\n",  in ppc4xx_setup_msi_irqs()
90 		pr_debug("ppc4xx msi: MSI-X untested, trying anyway.\n");  in ppc4xx_setup_msi_irqs()
101 			pr_debug("%s: fail allocating msi interrupt\n",  in ppc4xx_setup_msi_irqs()
112 		/* Setup msi address space */  in ppc4xx_setup_msi_irqs()
129 	dev_dbg(&dev->dev, "PCIE-MSI: tearing down msi irqs\n");  in ppc4xx_teardown_msi_irqs()
142 				 struct resource res, struct ppc4xx_msi *msi)  in ppc4xx_setup_pcieh_hw()  argument
155 	msi_data = of_get_property(dev->dev.of_node, "msi-data", NULL);  in ppc4xx_setup_pcieh_hw()
159 	msi_mask = of_get_property(dev->dev.of_node, "msi-mask", NULL);  in ppc4xx_setup_pcieh_hw()
163 	msi->msi_dev = of_find_node_by_name(NULL, "ppc4xx-msi");  in ppc4xx_setup_pcieh_hw()
164 	if (!msi->msi_dev)  in ppc4xx_setup_pcieh_hw()
167 	msi->msi_regs = of_iomap(msi->msi_dev, 0);  in ppc4xx_setup_pcieh_hw()
168 	if (!msi->msi_regs) {  in ppc4xx_setup_pcieh_hw()
173 	dev_dbg(&dev->dev, "PCIE-MSI: msi register mapped 0x%x 0x%x\n",  in ppc4xx_setup_pcieh_hw()
174 		(u32) (msi->msi_regs + PEIH_TERMADH), (u32) (msi->msi_regs));  in ppc4xx_setup_pcieh_hw()
181 	msi->msi_addr_hi = upper_32_bits(msi_phys);  in ppc4xx_setup_pcieh_hw()
182 	msi->msi_addr_lo = lower_32_bits(msi_phys & 0xffffffff);  in ppc4xx_setup_pcieh_hw()
183 	dev_dbg(&dev->dev, "PCIE-MSI: msi address high 0x%x, low 0x%x\n",  in ppc4xx_setup_pcieh_hw()
184 		msi->msi_addr_hi, msi->msi_addr_lo);  in ppc4xx_setup_pcieh_hw()
190 	out_be32(msi->msi_regs + PEIH_TERMADH, msi->msi_addr_hi);  in ppc4xx_setup_pcieh_hw()
191 	out_be32(msi->msi_regs + PEIH_TERMADL, msi->msi_addr_lo);  in ppc4xx_setup_pcieh_hw()
193 	/* Program MSI Expected data and Mask bits */  in ppc4xx_setup_pcieh_hw()
194 	out_be32(msi->msi_regs + PEIH_MSIED, *msi_data);  in ppc4xx_setup_pcieh_hw()
195 	out_be32(msi->msi_regs + PEIH_MSIMK, *msi_mask);  in ppc4xx_setup_pcieh_hw()
202 	iounmap(msi->msi_regs);  in ppc4xx_setup_pcieh_hw()
204 	of_node_put(msi->msi_dev);  in ppc4xx_setup_pcieh_hw()
210 	struct ppc4xx_msi *msi = dev->dev.platform_data;  in ppc4xx_of_msi_remove()  local
215 		virq = msi->msi_virqs[i];  in ppc4xx_of_msi_remove()
220 	if (msi->bitmap.bitmap)  in ppc4xx_of_msi_remove()
221 		msi_bitmap_free(&msi->bitmap);  in ppc4xx_of_msi_remove()
222 	iounmap(msi->msi_regs);  in ppc4xx_of_msi_remove()
223 	of_node_put(msi->msi_dev);  in ppc4xx_of_msi_remove()
230 	struct ppc4xx_msi *msi;  in ppc4xx_msi_probe()  local
235 	dev_dbg(&dev->dev, "PCIE-MSI: Setting up MSI support...\n");  in ppc4xx_msi_probe()
237 	msi = devm_kzalloc(&dev->dev, sizeof(*msi), GFP_KERNEL);  in ppc4xx_msi_probe()
238 	if (!msi)  in ppc4xx_msi_probe()
240 	dev->dev.platform_data = msi;  in ppc4xx_msi_probe()
242 	/* Get MSI ranges */  in ppc4xx_msi_probe()
253 	err = ppc4xx_setup_pcieh_hw(dev, res, msi);  in ppc4xx_msi_probe()
257 	err = ppc4xx_msi_init_allocator(dev, msi);  in ppc4xx_msi_probe()
259 		dev_err(&dev->dev, "Error allocating MSI bitmap\n");  in ppc4xx_msi_probe()
262 	ppc4xx_msi = *msi;  in ppc4xx_msi_probe()
276 		.compatible = "amcc,ppc4xx-msi",
284 		   .name = "ppc4xx-msi",