controller/mobiveil/pcie-layerscape-gen4.c

23 #include "pcie-mobiveil.h"
45 static inline u32 ls_g4_pcie_pf_readl(struct ls_g4_pcie *pcie, u32 off)
47 	return ioread32(pcie->pci.csr_axi_slave_base + PCIE_PF_OFF + off);
50 static inline void ls_g4_pcie_pf_writel(struct ls_g4_pcie *pcie,
53 	iowrite32(val, pcie->pci.csr_axi_slave_base + PCIE_PF_OFF + off);
58 	struct ls_g4_pcie *pcie = to_ls_g4_pcie(pci);
61 	state = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
70 static void ls_g4_pcie_disable_interrupt(struct ls_g4_pcie *pcie)
72 	struct mobiveil_pcie *mv_pci = &pcie->pci;
77 static void ls_g4_pcie_enable_interrupt(struct ls_g4_pcie *pcie)
79 	struct mobiveil_pcie *mv_pci = &pcie->pci;
90 static int ls_g4_pcie_reinit_hw(struct ls_g4_pcie *pcie)
92 	struct mobiveil_pcie *mv_pci = &pcie->pci;
100 		val = ls_g4_pcie_pf_readl(pcie, PCIE_PF_INT_STAT);
109 	val = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
111 	ls_g4_pcie_pf_writel(pcie, PCIE_PF_DBG, val);
113 	val = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
115 	ls_g4_pcie_pf_writel(pcie, PCIE_PF_DBG, val);
117 	val = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
119 	ls_g4_pcie_pf_writel(pcie, PCIE_PF_DBG, val);
136 	struct ls_g4_pcie *pcie = (struct ls_g4_pcie *)dev_id;
137 	struct mobiveil_pcie *mv_pci = &pcie->pci;
145 		ls_g4_pcie_disable_interrupt(pcie);
146 		schedule_delayed_work(&pcie->dwork, msecs_to_jiffies(1));
156 	struct ls_g4_pcie *pcie = to_ls_g4_pcie(mv_pci);
161 	pcie->irq = platform_get_irq_byname(pdev, "intr");
162 	if (pcie->irq < 0)
163 		return pcie->irq;
165 	ret = devm_request_irq(dev, pcie->irq, ls_g4_pcie_isr,
166 			       IRQF_SHARED, pdev->name, pcie);
179 	struct ls_g4_pcie *pcie = container_of(dwork, struct ls_g4_pcie, dwork);
180 	struct mobiveil_pcie *mv_pci = &pcie->pci;
187 	if (!ls_g4_pcie_reinit_hw(pcie))
190 	ls_g4_pcie_enable_interrupt(pcie);
206 	struct ls_g4_pcie *pcie;
215 	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
219 	pcie = pci_host_bridge_priv(bridge);
220 	mv_pci = &pcie->pci;
227 	platform_set_drvdata(pdev, pcie);
229 	INIT_DELAYED_WORK(&pcie->dwork, ls_g4_pcie_reset);
237 	ls_g4_pcie_enable_interrupt(pcie);
243 	{ .compatible = "fsl,lx2160a-pcie", },
249 		.name = "layerscape-pcie-gen4",