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Diffstat (limited to 'arch/mips/pci/pci-octeon.c')
-rw-r--r--arch/mips/pci/pci-octeon.c135
1 files changed, 89 insertions, 46 deletions
diff --git a/arch/mips/pci/pci-octeon.c b/arch/mips/pci/pci-octeon.c
index 9cb0c807f56..59cccd95688 100644
--- a/arch/mips/pci/pci-octeon.c
+++ b/arch/mips/pci/pci-octeon.c
@@ -11,6 +11,8 @@
#include <linux/interrupt.h>
#include <linux/time.h>
#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/swiotlb.h>
#include <asm/time.h>
@@ -19,6 +21,8 @@
#include <asm/octeon/cvmx-pci-defs.h>
#include <asm/octeon/pci-octeon.h>
+#include <dma-coherence.h>
+
#define USE_OCTEON_INTERNAL_ARBITER
/*
@@ -26,12 +30,14 @@
* addresses. Use PCI endian swapping 1 so no address swapping is
* necessary. The Linux io routines will endian swap the data.
*/
-#define OCTEON_PCI_IOSPACE_BASE 0x80011a0400000000ull
-#define OCTEON_PCI_IOSPACE_SIZE (1ull<<32)
+#define OCTEON_PCI_IOSPACE_BASE 0x80011a0400000000ull
+#define OCTEON_PCI_IOSPACE_SIZE (1ull<<32)
/* Octeon't PCI controller uses did=3, subdid=3 for PCI memory. */
#define OCTEON_PCI_MEMSPACE_OFFSET (0x00011b0000000000ull)
+u64 octeon_bar1_pci_phys;
+
/**
* This is the bit decoding used for the Octeon PCI controller addresses
*/
@@ -53,7 +59,7 @@ union octeon_pci_address {
} s;
};
-int __initdata (*octeon_pcibios_map_irq)(const struct pci_dev *dev,
+int __initconst (*octeon_pcibios_map_irq)(const struct pci_dev *dev,
u8 slot, u8 pin);
enum octeon_dma_bar_type octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_INVALID;
@@ -62,10 +68,10 @@ enum octeon_dma_bar_type octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_INVALID;
*
* @dev: The Linux PCI device structure for the device to map
* @slot: The slot number for this device on __BUS 0__. Linux
- * enumerates through all the bridges and figures out the
- * slot on Bus 0 where this device eventually hooks to.
+ * enumerates through all the bridges and figures out the
+ * slot on Bus 0 where this device eventually hooks to.
* @pin: The PCI interrupt pin read from the device, then swizzled
- * as it goes through each bridge.
+ * as it goes through each bridge.
* Returns Interrupt number for the device
*/
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
@@ -94,7 +100,7 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
*/
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 64 / 4);
/* Set latency timers for all devices */
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, 48);
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64);
/* Enable reporting System errors and parity errors on all devices */
/* Enable parity checking and error reporting */
@@ -104,7 +110,7 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
if (dev->subordinate) {
/* Set latency timers on sub bridges */
- pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER, 48);
+ pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER, 64);
/* More bridge error detection */
pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &config);
config |= PCI_BRIDGE_CTL_PARITY | PCI_BRIDGE_CTL_SERR;
@@ -112,20 +118,11 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
}
/* Enable the PCIe normal error reporting */
- pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
- if (pos) {
- /* Update Device Control */
- pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &config);
- /* Correctable Error Reporting */
- config |= PCI_EXP_DEVCTL_CERE;
- /* Non-Fatal Error Reporting */
- config |= PCI_EXP_DEVCTL_NFERE;
- /* Fatal Error Reporting */
- config |= PCI_EXP_DEVCTL_FERE;
- /* Unsupported Request */
- config |= PCI_EXP_DEVCTL_URRE;
- pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, config);
- }
+ config = PCI_EXP_DEVCTL_CERE; /* Correctable Error Reporting */
+ config |= PCI_EXP_DEVCTL_NFERE; /* Non-Fatal Error Reporting */
+ config |= PCI_EXP_DEVCTL_FERE; /* Fatal Error Reporting */
+ config |= PCI_EXP_DEVCTL_URRE; /* Unsupported Request */
+ pcie_capability_set_word(dev, PCI_EXP_DEVCTL, config);
/* Find the Advanced Error Reporting capability */
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
@@ -170,6 +167,8 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, dconfig);
}
+ dev->dev.archdata.dma_ops = octeon_pci_dma_map_ops;
+
return 0;
}
@@ -209,16 +208,14 @@ const char *octeon_get_pci_interrupts(void)
case CVMX_BOARD_TYPE_NAO38:
/* This is really the NAC38 */
return "AAAAADABAAAAAAAAAAAAAAAAAAAAAAAA";
- case CVMX_BOARD_TYPE_THUNDER:
- return "";
- case CVMX_BOARD_TYPE_EBH3000:
- return "";
case CVMX_BOARD_TYPE_EBH3100:
case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
return "AAABAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case CVMX_BOARD_TYPE_BBGW_REF:
return "AABCD";
+ case CVMX_BOARD_TYPE_THUNDER:
+ case CVMX_BOARD_TYPE_EBH3000:
default:
return "";
}
@@ -229,10 +226,10 @@ const char *octeon_get_pci_interrupts(void)
*
* @dev: The Linux PCI device structure for the device to map
* @slot: The slot number for this device on __BUS 0__. Linux
- * enumerates through all the bridges and figures out the
- * slot on Bus 0 where this device eventually hooks to.
+ * enumerates through all the bridges and figures out the
+ * slot on Bus 0 where this device eventually hooks to.
* @pin: The PCI interrupt pin read from the device, then swizzled
- * as it goes through each bridge.
+ * as it goes through each bridge.
* Returns Interrupt number for the device
*/
int __init octeon_pci_pcibios_map_irq(const struct pci_dev *dev,
@@ -407,8 +404,8 @@ static void octeon_pci_initialize(void)
ctl_status_2.s.bb1_siz = 1; /* BAR1 is 2GB */
ctl_status_2.s.bb_ca = 1; /* Don't use L2 with big bars */
ctl_status_2.s.bb_es = 1; /* Big bar in byte swap mode */
- ctl_status_2.s.bb1 = 1; /* BAR1 is big */
- ctl_status_2.s.bb0 = 1; /* BAR0 is big */
+ ctl_status_2.s.bb1 = 1; /* BAR1 is big */
+ ctl_status_2.s.bb0 = 1; /* BAR0 is big */
}
octeon_npi_write32(CVMX_NPI_PCI_CTL_STATUS_2, ctl_status_2.u32);
@@ -436,7 +433,7 @@ static void octeon_pci_initialize(void)
/*
* TDOMC must be set to one in PCI mode. TDOMC should be set to 4
- * in PCI-X mode to allow four oustanding splits. Otherwise,
+ * in PCI-X mode to allow four outstanding splits. Otherwise,
* should not change from its reset value. Don't write PCI_CFG19
* in PCI mode (0x82000001 reset value), write it to 0x82000004
* after PCI-X mode is known. MRBCI,MDWE,MDRE -> must be zero.
@@ -449,7 +446,7 @@ static void octeon_pci_initialize(void)
* count. [1..31] and 0=32. NOTE: If the user
* programs these bits beyond the Designed Maximum
* outstanding count, then the designed maximum table
- * depth will be used instead. No additional
+ * depth will be used instead. No additional
* Deferred/Split transactions will be accepted if
* this outstanding maximum count is
* reached. Furthermore, no additional deferred/split
@@ -459,7 +456,7 @@ static void octeon_pci_initialize(void)
cfg19.s.tdomc = 4;
/*
* Master Deferred Read Request Outstanding Max Count
- * (PCI only). CR4C[26:24] Max SAC cycles MAX DAC
+ * (PCI only). CR4C[26:24] Max SAC cycles MAX DAC
* cycles 000 8 4 001 1 0 010 2 1 011 3 1 100 4 2 101
* 5 2 110 6 3 111 7 3 For example, if these bits are
* programmed to 100, the core can support 2 DAC
@@ -510,7 +507,7 @@ static void octeon_pci_initialize(void)
#endif /* USE_OCTEON_INTERNAL_ARBITER */
/*
- * Preferrably written to 1 to set MLTD. [RDSATI,TRTAE,
+ * Preferably written to 1 to set MLTD. [RDSATI,TRTAE,
* TWTAE,TMAE,DPPMR -> must be zero. TILT -> must not be set to
* 1..7.
*/
@@ -553,7 +550,7 @@ static void octeon_pci_initialize(void)
/*
* Affects PCI performance when OCTEON services reads to its
- * BAR1/BAR2. Refer to Section 10.6.1. The recommended values are
+ * BAR1/BAR2. Refer to Section 10.6.1. The recommended values are
* 0x22, 0x33, and 0x33 for PCI_READ_CMD_6, PCI_READ_CMD_C, and
* PCI_READ_CMD_E, respectively. Unfortunately due to errata DDR-700,
* these values need to be changed so they won't possibly prefetch off
@@ -589,15 +586,16 @@ static int __init octeon_pci_setup(void)
else
octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_BIG;
- /* PCI I/O and PCI MEM values */
- set_io_port_base(OCTEON_PCI_IOSPACE_BASE);
- ioport_resource.start = 0;
- ioport_resource.end = OCTEON_PCI_IOSPACE_SIZE - 1;
if (!octeon_is_pci_host()) {
pr_notice("Not in host mode, PCI Controller not initialized\n");
return 0;
}
+ /* PCI I/O and PCI MEM values */
+ set_io_port_base(OCTEON_PCI_IOSPACE_BASE);
+ ioport_resource.start = 0;
+ ioport_resource.end = OCTEON_PCI_IOSPACE_SIZE - 1;
+
pr_notice("%s Octeon big bar support\n",
(octeon_dma_bar_type ==
OCTEON_DMA_BAR_TYPE_BIG) ? "Enabling" : "Disabling");
@@ -620,12 +618,10 @@ static int __init octeon_pci_setup(void)
* before the readl()'s below. We don't want BAR2 overlapping
* with BAR0/BAR1 during these reads.
*/
- octeon_npi_write32(CVMX_NPI_PCI_CFG08, 0);
- octeon_npi_write32(CVMX_NPI_PCI_CFG09, 0x80);
-
- /* Disable the BAR1 movable mappings */
- for (index = 0; index < 32; index++)
- octeon_npi_write32(CVMX_NPI_PCI_BAR1_INDEXX(index), 0);
+ octeon_npi_write32(CVMX_NPI_PCI_CFG08,
+ (u32)(OCTEON_BAR2_PCI_ADDRESS & 0xffffffffull));
+ octeon_npi_write32(CVMX_NPI_PCI_CFG09,
+ (u32)(OCTEON_BAR2_PCI_ADDRESS >> 32));
if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_BIG) {
/* Remap the Octeon BAR 0 to 0-2GB */
@@ -639,6 +635,25 @@ static int __init octeon_pci_setup(void)
octeon_npi_write32(CVMX_NPI_PCI_CFG06, 2ul << 30);
octeon_npi_write32(CVMX_NPI_PCI_CFG07, 0);
+ /* BAR1 movable mappings set for identity mapping */
+ octeon_bar1_pci_phys = 0x80000000ull;
+ for (index = 0; index < 32; index++) {
+ union cvmx_pci_bar1_indexx bar1_index;
+
+ bar1_index.u32 = 0;
+ /* Address bits[35:22] sent to L2C */
+ bar1_index.s.addr_idx =
+ (octeon_bar1_pci_phys >> 22) + index;
+ /* Don't put PCI accesses in L2. */
+ bar1_index.s.ca = 1;
+ /* Endian Swap Mode */
+ bar1_index.s.end_swp = 1;
+ /* Set '1' when the selected address range is valid. */
+ bar1_index.s.addr_v = 1;
+ octeon_npi_write32(CVMX_NPI_PCI_BAR1_INDEXX(index),
+ bar1_index.u32);
+ }
+
/* Devices go after BAR1 */
octeon_pci_mem_resource.start =
OCTEON_PCI_MEMSPACE_OFFSET + (4ul << 30) -
@@ -654,6 +669,27 @@ static int __init octeon_pci_setup(void)
octeon_npi_write32(CVMX_NPI_PCI_CFG06, 0);
octeon_npi_write32(CVMX_NPI_PCI_CFG07, 0);
+ /* BAR1 movable regions contiguous to cover the swiotlb */
+ octeon_bar1_pci_phys =
+ virt_to_phys(octeon_swiotlb) & ~((1ull << 22) - 1);
+
+ for (index = 0; index < 32; index++) {
+ union cvmx_pci_bar1_indexx bar1_index;
+
+ bar1_index.u32 = 0;
+ /* Address bits[35:22] sent to L2C */
+ bar1_index.s.addr_idx =
+ (octeon_bar1_pci_phys >> 22) + index;
+ /* Don't put PCI accesses in L2. */
+ bar1_index.s.ca = 1;
+ /* Endian Swap Mode */
+ bar1_index.s.end_swp = 1;
+ /* Set '1' when the selected address range is valid. */
+ bar1_index.s.addr_v = 1;
+ octeon_npi_write32(CVMX_NPI_PCI_BAR1_INDEXX(index),
+ bar1_index.u32);
+ }
+
/* Devices go after BAR0 */
octeon_pci_mem_resource.start =
OCTEON_PCI_MEMSPACE_OFFSET + (128ul << 20) +
@@ -669,6 +705,13 @@ static int __init octeon_pci_setup(void)
* was setup properly.
*/
cvmx_write_csr(CVMX_NPI_PCI_INT_SUM2, -1);
+
+ if (IS_ERR(platform_device_register_simple("octeon_pci_edac",
+ -1, NULL, 0)))
+ pr_err("Registation of co_pci_edac failed!\n");
+
+ octeon_pci_dma_init();
+
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 16:49:22 +0000