diff options
author | Jens Axboe <axboe@kernel.dk> | 2018-02-05 12:55:38 -0700 |
---|---|---|
committer | Jens Axboe <axboe@kernel.dk> | 2018-02-05 12:55:38 -0700 |
commit | 9e05c864993c5442227f83ae1694a737d7a102ed (patch) | |
tree | e35b60bb3c0c179f147e9acaad5444f1e5d9117e /drivers/ntb/hw/idt/ntb_hw_idt.c | |
parent | 3c15f3f545afa320c5e3822825a9a53c664776b6 (diff) | |
parent | 35277995e17919ab838beae765f440674e8576eb (diff) |
Merge branch 'master' into test
* master: (688 commits)
dt-bindings: mailbox: qcom: Document the APCS clock binding
mailbox: qcom: Create APCS child device for clock controller
mailbox: qcom: Convert APCS IPC driver to use regmap
KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL
KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL
KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES
KVM/x86: Add IBPB support
KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX
pinctrl: remove include file from <linux/device.h>
firmware: dmi: handle missing DMI data gracefully
firmware: dmi_scan: Fix handling of empty DMI strings
firmware: dmi_scan: Drop dmi_initialized
firmware: dmi: Optimize dmi_matches
Revert "defer call to mem_cgroup_sk_alloc()"
soreuseport: fix mem leak in reuseport_add_sock()
net: qlge: use memmove instead of skb_copy_to_linear_data
net: qed: use correct strncpy() size
net: cxgb4: avoid memcpy beyond end of source buffer
cls_u32: add missing RCU annotation.
r8152: set rx mode early when linking on
...
Diffstat (limited to 'drivers/ntb/hw/idt/ntb_hw_idt.c')
-rw-r--r-- | drivers/ntb/hw/idt/ntb_hw_idt.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/ntb/hw/idt/ntb_hw_idt.c b/drivers/ntb/hw/idt/ntb_hw_idt.c index 0cd79f367f7c..8d98872d0983 100644 --- a/drivers/ntb/hw/idt/ntb_hw_idt.c +++ b/drivers/ntb/hw/idt/ntb_hw_idt.c @@ -1744,20 +1744,19 @@ static int idt_ntb_msg_clear_mask(struct ntb_dev *ntb, u64 mask_bits) * idt_ntb_msg_read() - read message register with specified index * (NTB API callback) * @ntb: NTB device context. - * @midx: Message register index * @pidx: OUT - Port index of peer device a message retrieved from - * @msg: OUT - Data + * @midx: Message register index * * Read data from the specified message register and source register. * - * Return: zero on success, negative error if invalid argument passed. + * Return: inbound message register value. */ -static int idt_ntb_msg_read(struct ntb_dev *ntb, int midx, int *pidx, u32 *msg) +static u32 idt_ntb_msg_read(struct ntb_dev *ntb, int *pidx, int midx) { struct idt_ntb_dev *ndev = to_ndev_ntb(ntb); if (midx < 0 || IDT_MSG_CNT <= midx) - return -EINVAL; + return ~(u32)0; /* Retrieve source port index of the message */ if (pidx != NULL) { @@ -1772,18 +1771,15 @@ static int idt_ntb_msg_read(struct ntb_dev *ntb, int midx, int *pidx, u32 *msg) } /* Retrieve data of the corresponding message register */ - if (msg != NULL) - *msg = idt_nt_read(ndev, ntdata_tbl.msgs[midx].in); - - return 0; + return idt_nt_read(ndev, ntdata_tbl.msgs[midx].in); } /* - * idt_ntb_msg_write() - write data to the specified message register - * (NTB API callback) + * idt_ntb_peer_msg_write() - write data to the specified message register + * (NTB API callback) * @ntb: NTB device context. - * @midx: Message register index * @pidx: Port index of peer device a message being sent to + * @midx: Message register index * @msg: Data to send * * Just try to send data to a peer. Message status register should be @@ -1791,7 +1787,8 @@ static int idt_ntb_msg_read(struct ntb_dev *ntb, int midx, int *pidx, u32 *msg) * * Return: zero on success, negative error if invalid argument passed. */ -static int idt_ntb_msg_write(struct ntb_dev *ntb, int midx, int pidx, u32 msg) +static int idt_ntb_peer_msg_write(struct ntb_dev *ntb, int pidx, int midx, + u32 msg) { struct idt_ntb_dev *ndev = to_ndev_ntb(ntb); unsigned long irqflags; @@ -2058,7 +2055,7 @@ static const struct ntb_dev_ops idt_ntb_ops = { .msg_set_mask = idt_ntb_msg_set_mask, .msg_clear_mask = idt_ntb_msg_clear_mask, .msg_read = idt_ntb_msg_read, - .msg_write = idt_ntb_msg_write + .peer_msg_write = idt_ntb_peer_msg_write }; /* @@ -2073,7 +2070,7 @@ static int idt_register_device(struct idt_ntb_dev *ndev) /* Initialize the rest of NTB device structure and register it */ ndev->ntb.ops = &idt_ntb_ops; - ndev->ntb.topo = NTB_TOPO_PRI; + ndev->ntb.topo = NTB_TOPO_SWITCH; ret = ntb_register_device(&ndev->ntb); if (ret != 0) { @@ -2269,7 +2266,7 @@ static ssize_t idt_dbgfs_info_read(struct file *filp, char __user *ubuf, "Message data:\n"); for (idx = 0; idx < IDT_MSG_CNT; idx++) { int src; - (void)idt_ntb_msg_read(&ndev->ntb, idx, &src, &data); + data = idt_ntb_msg_read(&ndev->ntb, &src, idx); off += scnprintf(strbuf + off, size - off, "\t%hhu. 0x%08x from peer %hhu (Port %hhu)\n", idx, data, src, ndev->peers[src].port); @@ -2429,7 +2426,7 @@ static int idt_init_pci(struct idt_ntb_dev *ndev) struct pci_dev *pdev = ndev->ntb.pdev; int ret; - /* Initialize the bit mask of DMA */ + /* Initialize the bit mask of PCI/NTB DMA */ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); if (ret != 0) { ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); @@ -2450,6 +2447,12 @@ static int idt_init_pci(struct idt_ntb_dev *ndev) dev_warn(&pdev->dev, "Cannot set consistent DMA highmem bit mask\n"); } + ret = dma_coerce_mask_and_coherent(&ndev->ntb.dev, + dma_get_mask(&pdev->dev)); + if (ret != 0) { + dev_err(&pdev->dev, "Failed to set NTB device DMA bit mask\n"); + return ret; + } /* * Enable the device advanced error reporting. It's not critical to |