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PCI: iproc: Use inbound resources for setup

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Now that the helpers provide the inbound resources in the host bridge
'dma_ranges' resource list, convert Broadcom iProc host bridge to use
the resource list to setup the inbound addresses.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com
This commit is contained in:
Rob Herring
2019-10-28 11:32:54 -05:00
committed by Lorenzo Pieralisi
parent 6dce5aa59e
commit b9ae59b30b
1 changed files with 17 additions and 60 deletions
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77
drivers/pci/controller/pcie-iproc.c
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@@ -1122,15 +1122,16 @@ static int iproc_pcie_ib_write(struct iproc_pcie *pcie, int region_idx,
}
static int iproc_pcie_setup_ib(struct iproc_pcie *pcie,
struct of_pci_range *range,
struct resource_entry *entry,
enum iproc_pcie_ib_map_type type)
{
struct device *dev = pcie->dev;
struct iproc_pcie_ib *ib = &pcie->ib;
int ret;
unsigned int region_idx, size_idx;
u64 axi_addr = range->cpu_addr, pci_addr = range->pci_addr;
resource_size_t size = range->size;
u64 axi_addr = entry->res->start;
u64 pci_addr = entry->res->start - entry->offset;
resource_size_t size = resource_size(entry->res);
/* iterate through all IARR mapping regions */
for (region_idx = 0; region_idx < ib->nr_regions; region_idx++) {
@@ -1182,66 +1183,19 @@ err_ib:
return ret;
}
static int iproc_pcie_add_dma_range(struct device *dev,
struct list_head *resources,
struct of_pci_range *range)
{
struct resource *res;
struct resource_entry *entry, *tmp;
struct list_head *head = resources;
res = devm_kzalloc(dev, sizeof(struct resource), GFP_KERNEL);
if (!res)
return -ENOMEM;
resource_list_for_each_entry(tmp, resources) {
if (tmp->res->start < range->cpu_addr)
head = &tmp->node;
}
res->start = range->cpu_addr;
res->end = res->start + range->size - 1;
entry = resource_list_create_entry(res, 0);
if (!entry)
return -ENOMEM;
entry->offset = res->start - range->cpu_addr;
resource_list_add(entry, head);
return 0;
}
static int iproc_pcie_map_dma_ranges(struct iproc_pcie *pcie)
{
struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie);
struct of_pci_range range;
struct of_pci_range_parser parser;
int ret;
LIST_HEAD(resources);
struct resource_entry *entry;
int ret = 0;
/* Get the dma-ranges from DT */
ret = of_pci_dma_range_parser_init(&parser, pcie->dev->of_node);
if (ret)
return ret;
for_each_of_pci_range(&parser, &range) {
ret = iproc_pcie_add_dma_range(pcie->dev,
&resources,
&range);
if (ret)
goto out;
resource_list_for_each_entry(entry, &host->dma_ranges) {
/* Each range entry corresponds to an inbound mapping region */
ret = iproc_pcie_setup_ib(pcie, &range, IPROC_PCIE_IB_MAP_MEM);
ret = iproc_pcie_setup_ib(pcie, entry, IPROC_PCIE_IB_MAP_MEM);
if (ret)
goto out;
break;
}
list_splice_init(&resources, &host->dma_ranges);
return 0;
out:
pci_free_resource_list(&resources);
return ret;
}
@@ -1276,13 +1230,16 @@ static int iproce_pcie_get_msi(struct iproc_pcie *pcie,
static int iproc_pcie_paxb_v2_msi_steer(struct iproc_pcie *pcie, u64 msi_addr)
{
int ret;
struct of_pci_range range;
struct resource_entry entry;
memset(&range, 0, sizeof(range));
range.size = SZ_32K;
range.pci_addr = range.cpu_addr = msi_addr & ~(range.size - 1);
memset(&entry, 0, sizeof(entry));
entry.res = &entry.__res;
ret = iproc_pcie_setup_ib(pcie, &range, IPROC_PCIE_IB_MAP_IO);
msi_addr &= ~(SZ_32K - 1);
entry.res->start = msi_addr;
entry.res->end = msi_addr + SZ_32K - 1;
ret = iproc_pcie_setup_ib(pcie, &entry, IPROC_PCIE_IB_MAP_IO);
return ret;
}