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| author | Bjorn Helgaas <bhelgaas@google.com> | 2019-01-02 22:31:05 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-01-02 22:31:05 +0100 |
| commit | 54aed1909db69f9b160bf36dd4ec314f0c91b56a (patch) | |
| tree | b914c97e4f4da4f970ebebeca0f0eee428072160 /include | |
| parent | Merge branch 'pci/pm' (diff) | |
| parent | switchtec: Add MRPC DMA mode support (diff) | |
| download | linux-54aed1909db69f9b160bf36dd4ec314f0c91b56a.tar.xz linux-54aed1909db69f9b160bf36dd4ec314f0c91b56a.zip | |
Merge branch 'pci/switchtec'
- Remove status check after submitting Switchtec MRPC Firmware Download
commands to avoid Completion Timeouts (Kelvin Cao)
- Set Switchtec coherent DMA mask to allow 64-bit DMA (Boris Glimcher)
- Fix Switchtec SWITCHTEC_IOCTL_EVENT_IDX_ALL flag overwrite issue (Joey
Zhang)
- Enable write combining for Switchtec MRPC Input buffers (Kelvin Cao)
- Add Switchtec MRPC DMA mode support (Wesley Sheng)
* pci/switchtec:
switchtec: Add MRPC DMA mode support
switchtec: Improve MRPC efficiency by enabling write combining
switchtec: Fix SWITCHTEC_IOCTL_EVENT_IDX_ALL flags overwrite
switchtec: Set DMA coherent mask
switchtec: Remove immediate status check after submitting MRPC command
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/switchtec.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/switchtec.h b/include/linux/switchtec.h index ab400af6f0ce..eee0412bdf4b 100644 --- a/include/linux/switchtec.h +++ b/include/linux/switchtec.h @@ -29,6 +29,7 @@ #define SWITCHTEC_EVENT_EN_IRQ BIT(3) #define SWITCHTEC_EVENT_FATAL BIT(4) +#define SWITCHTEC_DMA_MRPC_EN BIT(0) enum { SWITCHTEC_GAS_MRPC_OFFSET = 0x0000, SWITCHTEC_GAS_TOP_CFG_OFFSET = 0x1000, @@ -46,6 +47,10 @@ struct mrpc_regs { u32 cmd; u32 status; u32 ret_value; + u32 dma_en; + u64 dma_addr; + u32 dma_vector; + u32 dma_ver; } __packed; enum mrpc_status { @@ -342,6 +347,14 @@ struct pff_csr_regs { struct switchtec_ntb; +struct dma_mrpc_output { + u32 status; + u32 cmd_id; + u32 rtn_code; + u32 output_size; + u8 data[SWITCHTEC_MRPC_PAYLOAD_SIZE]; +}; + struct switchtec_dev { struct pci_dev *pdev; struct device dev; @@ -381,6 +394,9 @@ struct switchtec_dev { u8 link_event_count[SWITCHTEC_MAX_PFF_CSR]; struct switchtec_ntb *sndev; + + struct dma_mrpc_output *dma_mrpc; + dma_addr_t dma_mrpc_dma_addr; }; static inline struct switchtec_dev *to_stdev(struct device *dev) |