1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
Index: linux-4.14.66/arch/mips/pci/pci-ar71xx.c
===================================================================
--- linux-4.14.66.orig/arch/mips/pci/pci-ar71xx.c
+++ linux-4.14.66/arch/mips/pci/pci-ar71xx.c
@@ -54,11 +54,9 @@
struct ar71xx_pci_controller {
struct device_node *np;
void __iomem *cfg_base;
- int irq;
struct pci_controller pci_ctrl;
struct resource io_res;
struct resource mem_res;
- struct irq_domain *domain;
};
/* Byte lane enable bits */
@@ -230,104 +228,6 @@ static struct pci_ops ar71xx_pci_ops = {
.write = ar71xx_pci_write_config,
};
-static void ar71xx_pci_irq_handler(struct irq_desc *desc)
-{
- void __iomem *base = ath79_reset_base;
- struct irq_chip *chip = irq_desc_get_chip(desc);
- struct ar71xx_pci_controller *apc = irq_desc_get_handler_data(desc);
- u32 pending;
-
- chained_irq_enter(chip, desc);
- pending = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_STATUS) &
- __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
-
- if (pending & AR71XX_PCI_INT_DEV0)
- generic_handle_irq(irq_linear_revmap(apc->domain, 1));
-
- else if (pending & AR71XX_PCI_INT_DEV1)
- generic_handle_irq(irq_linear_revmap(apc->domain, 2));
-
- else if (pending & AR71XX_PCI_INT_DEV2)
- generic_handle_irq(irq_linear_revmap(apc->domain, 3));
-
- else if (pending & AR71XX_PCI_INT_CORE)
- generic_handle_irq(irq_linear_revmap(apc->domain, 4));
-
- else
- spurious_interrupt();
- chained_irq_exit(chip, desc);
-}
-
-static void ar71xx_pci_irq_unmask(struct irq_data *d)
-{
- struct ar71xx_pci_controller *apc;
- unsigned int irq;
- void __iomem *base = ath79_reset_base;
- u32 t;
-
- apc = irq_data_get_irq_chip_data(d);
- irq = irq_linear_revmap(apc->domain, d->irq);
-
- t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
- __raw_writel(t | (1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE);
-
- /* flush write */
- __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
-}
-
-static void ar71xx_pci_irq_mask(struct irq_data *d)
-{
- struct ar71xx_pci_controller *apc;
- unsigned int irq;
- void __iomem *base = ath79_reset_base;
- u32 t;
-
- apc = irq_data_get_irq_chip_data(d);
- irq = irq_linear_revmap(apc->domain, d->irq);
-
- t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
- __raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE);
-
- /* flush write */
- __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
-}
-
-static struct irq_chip ar71xx_pci_irq_chip = {
- .name = "AR71XX PCI",
- .irq_mask = ar71xx_pci_irq_mask,
- .irq_unmask = ar71xx_pci_irq_unmask,
- .irq_mask_ack = ar71xx_pci_irq_mask,
-};
-
-static int ar71xx_pci_irq_map(struct irq_domain *d,
- unsigned int irq, irq_hw_number_t hw)
-{
- struct ar71xx_pci_controller *apc = d->host_data;
-
- irq_set_chip_and_handler(irq, &ar71xx_pci_irq_chip, handle_level_irq);
- irq_set_chip_data(irq, apc);
-
- return 0;
-}
-
-static const struct irq_domain_ops ar71xx_pci_domain_ops = {
- .xlate = irq_domain_xlate_onecell,
- .map = ar71xx_pci_irq_map,
-};
-
-static void ar71xx_pci_irq_init(struct ar71xx_pci_controller *apc)
-{
- void __iomem *base = ath79_reset_base;
-
- __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_ENABLE);
- __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_STATUS);
-
- apc->domain = irq_domain_add_linear(apc->np, AR71XX_PCI_IRQ_COUNT,
- &ar71xx_pci_domain_ops, apc);
- irq_set_chained_handler_and_data(apc->irq, ar71xx_pci_irq_handler,
- apc);
-}
-
static void ar71xx_pci_reset(void)
{
ath79_device_reset_set(AR71XX_RESET_PCI_BUS | AR71XX_RESET_PCI_CORE);
@@ -361,10 +261,6 @@ static int ar71xx_pci_probe(struct platf
if (IS_ERR(apc->cfg_base))
return PTR_ERR(apc->cfg_base);
- apc->irq = platform_get_irq(pdev, 0);
- if (apc->irq < 0)
- return -EINVAL;
-
ar71xx_pci_reset();
/* setup COMMAND register */
@@ -375,8 +271,6 @@ static int ar71xx_pci_probe(struct platf
/* clear bus errors */
ar71xx_pci_check_error(apc, 1);
- ar71xx_pci_irq_init(apc);
-
apc->np = pdev->dev.of_node;
apc->pci_ctrl.pci_ops = &ar71xx_pci_ops;
apc->pci_ctrl.mem_resource = &apc->mem_res;
|
