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path: root/drivers/pci/controller/pci-v3-semi.c
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Diffstat (limited to 'drivers/pci/controller/pci-v3-semi.c')
-rw-r--r--drivers/pci/controller/pci-v3-semi.c74
1 files changed, 23 insertions, 51 deletions
diff --git a/drivers/pci/controller/pci-v3-semi.c b/drivers/pci/controller/pci-v3-semi.c
index d219404bad92..bd05221f5a22 100644
--- a/drivers/pci/controller/pci-v3-semi.c
+++ b/drivers/pci/controller/pci-v3-semi.c
@@ -241,10 +241,8 @@ struct v3_pci {
void __iomem *config_base;
struct pci_bus *bus;
u32 config_mem;
- u32 io_mem;
u32 non_pre_mem;
u32 pre_mem;
- phys_addr_t io_bus_addr;
phys_addr_t non_pre_bus_addr;
phys_addr_t pre_bus_addr;
struct regmap *map;
@@ -520,35 +518,22 @@ static int v3_integrator_init(struct v3_pci *v3)
}
static int v3_pci_setup_resource(struct v3_pci *v3,
- resource_size_t io_base,
struct pci_host_bridge *host,
struct resource_entry *win)
{
struct device *dev = v3->dev;
struct resource *mem;
struct resource *io;
- int ret;
switch (resource_type(win->res)) {
case IORESOURCE_IO:
io = win->res;
- io->name = "V3 PCI I/O";
- v3->io_mem = io_base;
- v3->io_bus_addr = io->start - win->offset;
- dev_dbg(dev, "I/O window %pR, bus addr %pap\n",
- io, &v3->io_bus_addr);
- ret = devm_pci_remap_iospace(dev, io, io_base);
- if (ret) {
- dev_warn(dev,
- "error %d: failed to map resource %pR\n",
- ret, io);
- return ret;
- }
+
/* Setup window 2 - PCI I/O */
- writel(v3_addr_to_lb_base2(v3->io_mem) |
+ writel(v3_addr_to_lb_base2(pci_pio_to_address(io->start)) |
V3_LB_BASE2_ENABLE,
v3->base + V3_LB_BASE2);
- writew(v3_addr_to_lb_map2(v3->io_bus_addr),
+ writew(v3_addr_to_lb_map2(io->start - win->offset),
v3->base + V3_LB_MAP2);
break;
case IORESOURCE_MEM:
@@ -613,28 +598,30 @@ static int v3_pci_setup_resource(struct v3_pci *v3,
}
static int v3_get_dma_range_config(struct v3_pci *v3,
- struct of_pci_range *range,
+ struct resource_entry *entry,
u32 *pci_base, u32 *pci_map)
{
struct device *dev = v3->dev;
- u64 cpu_end = range->cpu_addr + range->size - 1;
- u64 pci_end = range->pci_addr + range->size - 1;
+ u64 cpu_addr = entry->res->start;
+ u64 cpu_end = entry->res->end;
+ u64 pci_end = cpu_end - entry->offset;
+ u64 pci_addr = entry->res->start - entry->offset;
u32 val;
- if (range->pci_addr & ~V3_PCI_BASE_M_ADR_BASE) {
+ if (pci_addr & ~V3_PCI_BASE_M_ADR_BASE) {
dev_err(dev, "illegal range, only PCI bits 31..20 allowed\n");
return -EINVAL;
}
- val = ((u32)range->pci_addr) & V3_PCI_BASE_M_ADR_BASE;
+ val = ((u32)pci_addr) & V3_PCI_BASE_M_ADR_BASE;
*pci_base = val;
- if (range->cpu_addr & ~V3_PCI_MAP_M_MAP_ADR) {
+ if (cpu_addr & ~V3_PCI_MAP_M_MAP_ADR) {
dev_err(dev, "illegal range, only CPU bits 31..20 allowed\n");
return -EINVAL;
}
- val = ((u32)range->cpu_addr) & V3_PCI_MAP_M_MAP_ADR;
+ val = ((u32)cpu_addr) & V3_PCI_MAP_M_MAP_ADR;
- switch (range->size) {
+ switch (resource_size(entry->res)) {
case SZ_1M:
val |= V3_LB_BASE_ADR_SIZE_1MB;
break;
@@ -682,8 +669,8 @@ static int v3_get_dma_range_config(struct v3_pci *v3,
dev_dbg(dev,
"DMA MEM CPU: 0x%016llx -> 0x%016llx => "
"PCI: 0x%016llx -> 0x%016llx base %08x map %08x\n",
- range->cpu_addr, cpu_end,
- range->pci_addr, pci_end,
+ cpu_addr, cpu_end,
+ pci_addr, pci_end,
*pci_base, *pci_map);
return 0;
@@ -692,24 +679,16 @@ static int v3_get_dma_range_config(struct v3_pci *v3,
static int v3_pci_parse_map_dma_ranges(struct v3_pci *v3,
struct device_node *np)
{
- struct of_pci_range range;
- struct of_pci_range_parser parser;
+ struct pci_host_bridge *bridge = pci_host_bridge_from_priv(v3);
struct device *dev = v3->dev;
+ struct resource_entry *entry;
int i = 0;
- if (of_pci_dma_range_parser_init(&parser, np)) {
- dev_err(dev, "missing dma-ranges property\n");
- return -EINVAL;
- }
-
- /*
- * Get the dma-ranges from the device tree
- */
- for_each_of_pci_range(&parser, &range) {
+ resource_list_for_each_entry(entry, &bridge->dma_ranges) {
int ret;
u32 pci_base, pci_map;
- ret = v3_get_dma_range_config(v3, &range, &pci_base, &pci_map);
+ ret = v3_get_dma_range_config(v3, entry, &pci_base, &pci_map);
if (ret)
return ret;
@@ -732,7 +711,6 @@ static int v3_pci_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
- resource_size_t io_base;
struct resource *regs;
struct resource_entry *win;
struct v3_pci *v3;
@@ -741,7 +719,6 @@ static int v3_pci_probe(struct platform_device *pdev)
u16 val;
int irq;
int ret;
- LIST_HEAD(res);
host = pci_alloc_host_bridge(sizeof(*v3));
if (!host)
@@ -793,12 +770,8 @@ static int v3_pci_probe(struct platform_device *pdev)
if (IS_ERR(v3->config_base))
return PTR_ERR(v3->config_base);
- ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &res,
- &io_base);
- if (ret)
- return ret;
-
- ret = devm_request_pci_bus_resources(dev, &res);
+ ret = pci_parse_request_of_pci_ranges(dev, &host->windows,
+ &host->dma_ranges, NULL);
if (ret)
return ret;
@@ -852,8 +825,8 @@ static int v3_pci_probe(struct platform_device *pdev)
writew(val, v3->base + V3_PCI_CMD);
/* Get the I/O and memory ranges from DT */
- resource_list_for_each_entry(win, &res) {
- ret = v3_pci_setup_resource(v3, io_base, host, win);
+ resource_list_for_each_entry(win, &host->windows) {
+ ret = v3_pci_setup_resource(v3, host, win);
if (ret) {
dev_err(dev, "error setting up resources\n");
return ret;
@@ -931,7 +904,6 @@ static int v3_pci_probe(struct platform_device *pdev)
val |= V3_SYSTEM_M_LOCK;
writew(val, v3->base + V3_SYSTEM);
- list_splice_init(&res, &host->windows);
ret = pci_scan_root_bus_bridge(host);
if (ret) {
dev_err(dev, "failed to register host: %d\n", ret);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.