#include "pcie-designware.h"
+#define ARMADA8K_PCIE_MAX_LANES PCIE_LNK_X4
+
struct armada8k_pcie {
struct dw_pcie *pci;
struct clk *clk;
struct clk *clk_reg;
+ struct phy *phy[ARMADA8K_PCIE_MAX_LANES];
+ unsigned int phy_count;
};
#define PCIE_VENDOR_REGS_OFFSET 0x8000
#define PCIE_ARUSER_REG (PCIE_VENDOR_REGS_OFFSET + 0x5C)
#define PCIE_AWUSER_REG (PCIE_VENDOR_REGS_OFFSET + 0x60)
/*
- * AR/AW Cache defauls: Normal memory, Write-Back, Read / Write
+ * AR/AW Cache defaults: Normal memory, Write-Back, Read / Write
* allocate
*/
#define ARCACHE_DEFAULT_VALUE 0x3511
#define to_armada8k_pcie(x) dev_get_drvdata((x)->dev)
+static void armada8k_pcie_disable_phys(struct armada8k_pcie *pcie)
+{
+ int i;
+
+ for (i = 0; i < ARMADA8K_PCIE_MAX_LANES; i++) {
+ phy_power_off(pcie->phy[i]);
+ phy_exit(pcie->phy[i]);
+ }
+}
+
+static int armada8k_pcie_enable_phys(struct armada8k_pcie *pcie)
+{
+ int ret;
+ int i;
+
+ for (i = 0; i < ARMADA8K_PCIE_MAX_LANES; i++) {
+ ret = phy_init(pcie->phy[i]);
+ if (ret)
+ return ret;
+
+ ret = phy_set_mode_ext(pcie->phy[i], PHY_MODE_PCIE,
+ pcie->phy_count);
+ if (ret) {
+ phy_exit(pcie->phy[i]);
+ return ret;
+ }
+
+ ret = phy_power_on(pcie->phy[i]);
+ if (ret) {
+ phy_exit(pcie->phy[i]);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int armada8k_pcie_setup_phys(struct armada8k_pcie *pcie)
+{
+ struct dw_pcie *pci = pcie->pci;
+ struct device *dev = pci->dev;
+ struct device_node *node = dev->of_node;
+ int ret = 0;
+ int i;
+
+ for (i = 0; i < ARMADA8K_PCIE_MAX_LANES; i++) {
+ pcie->phy[i] = devm_of_phy_get_by_index(dev, node, i);
+ if (IS_ERR(pcie->phy[i]) &&
+ (PTR_ERR(pcie->phy[i]) == -EPROBE_DEFER))
+ return PTR_ERR(pcie->phy[i]);
+
+ if (IS_ERR(pcie->phy[i])) {
+ pcie->phy[i] = NULL;
+ continue;
+ }
+
+ pcie->phy_count++;
+ }
+
+ /* Old bindings miss the PHY handle, so just warn if there is no PHY */
+ if (!pcie->phy_count)
+ dev_warn(dev, "No available PHY\n");
+
+ ret = armada8k_pcie_enable_phys(pcie);
+ if (ret)
+ dev_err(dev, "Failed to initialize PHY(s) (%d)\n", ret);
+
+ return ret;
+}
+
static int armada8k_pcie_link_up(struct dw_pcie *pci)
{
u32 reg;
goto fail_clkreg;
}
+ ret = armada8k_pcie_setup_phys(pcie);
+ if (ret)
+ goto fail_clkreg;
+
platform_set_drvdata(pdev, pcie);
ret = armada8k_add_pcie_port(pcie, pdev);
if (ret)
- goto fail_clkreg;
+ goto disable_phy;
return 0;
+disable_phy:
+ armada8k_pcie_disable_phys(pcie);
fail_clkreg:
clk_disable_unprepare(pcie->clk_reg);
fail:
/*
* Note this function returns the parent PCI device with a
- * reference taken. It is the caller's responsibily to drop
+ * reference taken. It is the caller's responsibility to drop
* the reference.
*/
static struct pci_dev *find_parent_pci_dev(struct device *dev)
/*
* Allow the connection if both devices are on a whitelisted root
- * complex, but add an arbitary large value to the distance.
+ * complex, but add an arbitrary large value to the distance.
*/
if (root_complex_whitelist(provider) &&
root_complex_whitelist(client))
}
/**
- * pci_p2pdma_distance_many - Determive the cumulative distance between
+ * pci_p2pdma_distance_many - Determine the cumulative distance between
* a p2pdma provider and the clients in use.
* @provider: p2pdma provider to check against the client list
* @clients: array of devices to check (NULL-terminated)
return -1;
for (i = 0; i < num_clients; i++) {
+ if (IS_ENABLED(CONFIG_DMA_VIRT_OPS) &&
+ clients[i]->dma_ops == &dma_virt_ops) {
+ if (verbose)
+ dev_warn(clients[i],
+ "cannot be used for peer-to-peer DMA because the driver makes use of dma_virt_ops\n");
+ return -1;
+ }
+
pci_client = find_parent_pci_dev(clients[i]);
if (!pci_client) {
if (verbose)
* p2pdma mappings are not compatible with devices that use
* dma_virt_ops. If the upper layers do the right thing
* this should never happen because it will be prevented
- * by the check in pci_p2pdma_add_client()
+ * by the check in pci_p2pdma_distance_many()
*/
if (WARN_ON_ONCE(IS_ENABLED(CONFIG_DMA_VIRT_OPS) &&
dev->dma_ops == &dma_virt_ops))
/*
* Wait for Transaction Pending bit to clear. A word-aligned test
- * is used, so we use the conrol offset rather than status and shift
+ * is used, so we use the control offset rather than status and shift
* the test bit to match.
*/
if (!pci_wait_for_pending(dev, pos + PCI_AF_CTRL,
*/
pcie_capability_read_dword(dev, PCI_EXP_LNKCAP2, &lnkcap2);
if (lnkcap2) { /* PCIe r3.0-compliant */
- if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_16_0GB)
+ if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_32_0GB)
+ return PCIE_SPEED_32_0GT;
+ else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_16_0GB)
return PCIE_SPEED_16_0GT;
else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
return PCIE_SPEED_8_0GT;
#define PCI_PM_BUS_WAIT 50
/**
+ * typedef pci_channel_state_t
+ *
* The pci_channel state describes connectivity between the CPU and
* the PCI device. If some PCI bus between here and the PCI device
* has crashed or locked up, this info is reflected here.
PCIE_SPEED_5_0GT = 0x15,
PCIE_SPEED_8_0GT = 0x16,
PCIE_SPEED_16_0GT = 0x17,
+ PCIE_SPEED_32_0GT = 0x18,
PCI_SPEED_UNKNOWN = 0xff,
};
unsigned int is_busmaster:1; /* Is busmaster */
unsigned int no_msi:1; /* May not use MSI */
- unsigned int no_64bit_msi:1; /* May only use 32-bit MSIs */
+ unsigned int no_64bit_msi:1; /* May only use 32-bit MSIs */
unsigned int block_cfg_access:1; /* Config space access blocked */
unsigned int broken_parity_status:1; /* Generates false positive parity */
unsigned int irq_reroute_variant:2; /* Needs IRQ rerouting variant */
unsigned int native_shpc_hotplug:1; /* OS may use SHPC hotplug */
unsigned int native_pme:1; /* OS may use PCIe PME */
unsigned int native_ltr:1; /* OS may use PCIe LTR */
+ unsigned int preserve_config:1; /* Preserve FW resource setup */
+
/* Resource alignment requirements */
resource_size_t (*align_resource)(struct pci_dev *dev,
const struct resource *res,
struct module;
+
+/**
+ * struct pci_driver - PCI driver structure
+ * @node: List of driver structures.
+ * @name: Driver name.
+ * @id_table: Pointer to table of device IDs the driver is
+ * interested in. Most drivers should export this
+ * table using MODULE_DEVICE_TABLE(pci,...).
+ * @probe: This probing function gets called (during execution
+ * of pci_register_driver() for already existing
+ * devices or later if a new device gets inserted) for
+ * all PCI devices which match the ID table and are not
+ * "owned" by the other drivers yet. This function gets
+ * passed a "struct pci_dev \*" for each device whose
+ * entry in the ID table matches the device. The probe
+ * function returns zero when the driver chooses to
+ * take "ownership" of the device or an error code
+ * (negative number) otherwise.
+ * The probe function always gets called from process
+ * context, so it can sleep.
+ * @remove: The remove() function gets called whenever a device
+ * being handled by this driver is removed (either during
+ * deregistration of the driver or when it's manually
+ * pulled out of a hot-pluggable slot).
+ * The remove function always gets called from process
+ * context, so it can sleep.
+ * @suspend: Put device into low power state.
+ * @suspend_late: Put device into low power state.
+ * @resume_early: Wake device from low power state.
+ * @resume: Wake device from low power state.
+ * (Please see Documentation/power/pci.rst for descriptions
+ * of PCI Power Management and the related functions.)
+ * @shutdown: Hook into reboot_notifier_list (kernel/sys.c).
+ * Intended to stop any idling DMA operations.
+ * Useful for enabling wake-on-lan (NIC) or changing
+ * the power state of a device before reboot.
+ * e.g. drivers/net/e100.c.
+ * @sriov_configure: Optional driver callback to allow configuration of
+ * number of VFs to enable via sysfs "sriov_numvfs" file.
+ * @err_handler: See Documentation/PCI/pci-error-recovery.rst
+ * @groups: Sysfs attribute groups.
+ * @driver: Driver model structure.
+ * @dynids: List of dynamically added device IDs.
+ */
struct pci_driver {
struct list_head node;
const char *name;
/**
* pci_vpd_info_field_size - Extracts the information field length
- * @lrdt: Pointer to the beginning of an information field header
+ * @info_field: Pointer to the beginning of an information field header
*
* Returns the extracted information field length.
*/
#define PCI_VENDOR_ID_AL 0x10b9
#define PCI_DEVICE_ID_AL_M1533 0x1533
- #define PCI_DEVICE_ID_AL_M1535 0x1535
+ #define PCI_DEVICE_ID_AL_M1535 0x1535
#define PCI_DEVICE_ID_AL_M1541 0x1541
#define PCI_DEVICE_ID_AL_M1563 0x1563
#define PCI_DEVICE_ID_AL_M1621 0x1621
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP78S_SMBUS 0x0752
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE 0x0759
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_SMBUS 0x07D8
+#define PCI_DEVICE_ID_NVIDIA_GEFORCE_320M 0x08A0
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP79_SMBUS 0x0AA2
#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA 0x0D85
#define PCI_VENDOR_ID_STALLION 0x124d
/* Allied Telesyn */
- #define PCI_VENDOR_ID_AT 0x1259
+ #define PCI_VENDOR_ID_AT 0x1259
#define PCI_SUBDEVICE_ID_AT_2700FX 0x2701
#define PCI_SUBDEVICE_ID_AT_2701FX 0x2703
#define PCI_DEVICE_ID_KORENIX_JETCARDF2 0x1700
#define PCI_DEVICE_ID_KORENIX_JETCARDF3 0x17ff
- #define PCI_VENDOR_ID_HUAWEI 0x19e5
+ #define PCI_VENDOR_ID_HUAWEI 0x19e5
#define PCI_VENDOR_ID_NETRONOME 0x19ee
#define PCI_DEVICE_ID_NETRONOME_NFP4000 0x4000
projects / linux-2.6-microblaze.git / commitdiff