diff options
author | Rob Herring <robh@kernel.org> | 2019-10-28 11:32:54 -0500 |
---|---|---|
committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2019-11-20 17:00:14 +0000 |
commit | b9ae59b30bcf62691aec4170ce4bafc20e968490 (patch) | |
tree | 5b499de3cce43f7089166b8380d2b118f57a2878 /drivers/pci/controller/pcie-iproc.c | |
parent | 6dce5aa59e0bf2430733d7a8b11c205ec10f408e (diff) |
PCI: iproc: Use inbound resources for setup
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
Diffstat (limited to 'drivers/pci/controller/pcie-iproc.c')
-rw-r--r-- | drivers/pci/controller/pcie-iproc.c | 77 |
1 files changed, 17 insertions, 60 deletions
diff --git a/drivers/pci/controller/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c index 223335ee791a..f4d78e66846e 100644 --- a/drivers/pci/controller/pcie-iproc.c +++ b/drivers/pci/controller/pcie-iproc.c @@ -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); - - /* Get the dma-ranges from DT */ - ret = of_pci_dma_range_parser_init(&parser, pcie->dev->of_node); - if (ret) - return ret; + struct resource_entry *entry; + int ret = 0; - 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(&entry, 0, sizeof(entry)); + entry.res = &entry.__res; - memset(&range, 0, sizeof(range)); - range.size = SZ_32K; - range.pci_addr = range.cpu_addr = msi_addr & ~(range.size - 1); + msi_addr &= ~(SZ_32K - 1); + entry.res->start = msi_addr; + entry.res->end = msi_addr + SZ_32K - 1; - ret = iproc_pcie_setup_ib(pcie, &range, IPROC_PCIE_IB_MAP_IO); + ret = iproc_pcie_setup_ib(pcie, &entry, IPROC_PCIE_IB_MAP_IO); return ret; } |