diff options
author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2022-06-24 17:39:42 +0300 |
---|---|---|
committer | Bjorn Helgaas <bhelgaas@google.com> | 2022-08-01 15:07:55 -0500 |
commit | 38fe272389f44c223c689d74d9e2365257ed85e1 (patch) | |
tree | be478a72210406b8ba273981110ba14476270378 /drivers/pci | |
parent | 4859db9bca5daafc4ec9ef4e5aab9e054b483e0c (diff) | |
download | linux-38fe272389f44c223c689d74d9e2365257ed85e1.tar.bz2 |
PCI: dwc: Drop enum dw_pcie_region_type in favor of PCIE_ATU_REGION_DIR_IB/OB
Previously callers of dw_pcie_disable_atu() supplied enum
dw_pcie_region_type (DW_PCIE_REGION_INBOUND, DW_PCIE_REGION_OUTBOUND),
which dw_pcie_disable_atu() converted to the PCIE_ATU_REGION_DIR_IB or
PCIE_ATU_REGION_DIR_OB values needed to program the ATU registers.
Simplify the code by dropping the dw_pcie_region_type enum and passing
PCIE_ATU_REGION_DIR_IB or PCIE_ATU_REGION_DIR_OB directly.
Reorder dw_pcie_disable_atu() arguments to (dir, index) since "index"
indicates an ATU window in the regions of the corresponding direction.
[bhelgaas: commit log]
Link: https://lore.kernel.org/r/20220624143947.8991-11-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/controller/dwc/pcie-designware-ep.c | 4 | ||||
-rw-r--r-- | drivers/pci/controller/dwc/pcie-designware-host.c | 2 | ||||
-rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.c | 28 | ||||
-rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.h | 13 |
4 files changed, 13 insertions, 34 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index 5a158813f687..2e91222f7c98 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -212,7 +212,7 @@ static void dw_pcie_ep_clear_bar(struct pci_epc *epc, u8 func_no, u8 vfunc_no, __dw_pcie_ep_reset_bar(pci, func_no, bar, epf_bar->flags); - dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_INBOUND); + dw_pcie_disable_atu(pci, PCIE_ATU_REGION_DIR_IB, atu_index); clear_bit(atu_index, ep->ib_window_map); ep->epf_bar[bar] = NULL; } @@ -286,7 +286,7 @@ static void dw_pcie_ep_unmap_addr(struct pci_epc *epc, u8 func_no, u8 vfunc_no, if (ret < 0) return; - dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_OUTBOUND); + dw_pcie_disable_atu(pci, PCIE_ATU_REGION_DIR_OB, atu_index); clear_bit(atu_index, ep->ob_window_map); } diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 9127b1a57bc1..aaf1914388b2 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -618,7 +618,7 @@ void dw_pcie_setup_rc(struct dw_pcie_rp *pp) * can't match multiple windows. */ for (i = 0; i < pci->num_ob_windows; i++) - dw_pcie_disable_atu(pci, i, DW_PCIE_REGION_OUTBOUND); + dw_pcie_disable_atu(pci, PCIE_ATU_REGION_DIR_OB, i); /* Get last memory resource entry */ resource_list_for_each_entry(entry, &pp->bridge->windows) { diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 0e846c53dfb5..3cf224d79a9a 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -353,7 +353,7 @@ static void __dw_pcie_prog_outbound_atu(struct dw_pcie *pci, u8 func_no, limit_addr = cpu_addr + size - 1; dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, - PCIE_ATU_REGION_OUTBOUND | index); + PCIE_ATU_REGION_DIR_OB | index); dw_pcie_writel_dbi(pci, PCIE_ATU_LOWER_BASE, lower_32_bits(cpu_addr)); dw_pcie_writel_dbi(pci, PCIE_ATU_UPPER_BASE, @@ -464,7 +464,7 @@ int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index, return dw_pcie_prog_inbound_atu_unroll(pci, func_no, index, type, cpu_addr, bar); - dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, PCIE_ATU_REGION_INBOUND | + dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, PCIE_ATU_REGION_DIR_IB | index); dw_pcie_writel_dbi(pci, PCIE_ATU_LOWER_TARGET, lower_32_bits(cpu_addr)); dw_pcie_writel_dbi(pci, PCIE_ATU_UPPER_TARGET, upper_32_bits(cpu_addr)); @@ -491,24 +491,10 @@ int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index, return -EBUSY; } -void dw_pcie_disable_atu(struct dw_pcie *pci, int index, - enum dw_pcie_region_type type) +void dw_pcie_disable_atu(struct dw_pcie *pci, u32 dir, int index) { - u32 region; - - switch (type) { - case DW_PCIE_REGION_INBOUND: - region = PCIE_ATU_REGION_INBOUND; - break; - case DW_PCIE_REGION_OUTBOUND: - region = PCIE_ATU_REGION_OUTBOUND; - break; - default: - return; - } - if (pci->iatu_unroll_enabled) { - if (region == PCIE_ATU_REGION_INBOUND) { + if (dir == PCIE_ATU_REGION_DIR_IB) { dw_pcie_writel_ib_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL2, ~(u32)PCIE_ATU_ENABLE); } else { @@ -516,7 +502,7 @@ void dw_pcie_disable_atu(struct dw_pcie *pci, int index, ~(u32)PCIE_ATU_ENABLE); } } else { - dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, region | index); + dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, dir | index); dw_pcie_writel_dbi(pci, PCIE_ATU_CR2, ~(u32)PCIE_ATU_ENABLE); } } @@ -661,7 +647,7 @@ static void dw_pcie_iatu_detect_regions(struct dw_pcie *pci) max_region = dw_pcie_readl_dbi(pci, PCIE_ATU_VIEWPORT) + 1; for (i = 0; i < max_region; i++) { - dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, PCIE_ATU_REGION_OUTBOUND | i); + dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, PCIE_ATU_REGION_DIR_OB | i); dw_pcie_writel_dbi(pci, PCIE_ATU_LOWER_TARGET, 0x11110000); val = dw_pcie_readl_dbi(pci, PCIE_ATU_LOWER_TARGET); if (val == 0x11110000) @@ -671,7 +657,7 @@ static void dw_pcie_iatu_detect_regions(struct dw_pcie *pci) } for (i = 0; i < max_region; i++) { - dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, PCIE_ATU_REGION_INBOUND | i); + dw_pcie_writel_dbi(pci, PCIE_ATU_VIEWPORT, PCIE_ATU_REGION_DIR_IB | i); dw_pcie_writel_dbi(pci, PCIE_ATU_LOWER_TARGET, 0x11110000); val = dw_pcie_readl_dbi(pci, PCIE_ATU_LOWER_TARGET); if (val == 0x11110000) diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index c63ace3c3f25..72d185ff72f3 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -104,8 +104,8 @@ #define PCIE_VERSION_TYPE 0x8FC #define PCIE_ATU_VIEWPORT 0x900 -#define PCIE_ATU_REGION_INBOUND BIT(31) -#define PCIE_ATU_REGION_OUTBOUND 0 +#define PCIE_ATU_REGION_DIR_IB BIT(31) +#define PCIE_ATU_REGION_DIR_OB 0 #define PCIE_ATU_CR1 0x904 #define PCIE_ATU_INCREASE_REGION_SIZE BIT(13) #define PCIE_ATU_TYPE_MEM 0x0 @@ -185,12 +185,6 @@ struct dw_pcie; struct dw_pcie_rp; struct dw_pcie_ep; -enum dw_pcie_region_type { - DW_PCIE_REGION_UNKNOWN, - DW_PCIE_REGION_INBOUND, - DW_PCIE_REGION_OUTBOUND, -}; - enum dw_pcie_device_mode { DW_PCIE_UNKNOWN_TYPE, DW_PCIE_EP_TYPE, @@ -326,8 +320,7 @@ void dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index, u64 size); int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index, int type, u64 cpu_addr, u8 bar); -void dw_pcie_disable_atu(struct dw_pcie *pci, int index, - enum dw_pcie_region_type type); +void dw_pcie_disable_atu(struct dw_pcie *pci, u32 dir, int index); void dw_pcie_setup(struct dw_pcie *pci); void dw_pcie_iatu_detect(struct dw_pcie *pci); |