diff options
Diffstat (limited to 'drivers/mailbox')
| -rw-r--r-- | drivers/mailbox/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/mailbox/bcm-pdc-mailbox.c | 61 |
2 files changed, 50 insertions, 20 deletions
diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index ceff415f201c..91eafb56568e 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -144,12 +144,11 @@ config XGENE_SLIMPRO_MBOX want to use the APM X-Gene SLIMpro IPCM support. config BCM_PDC_MBOX - tristate "Broadcom PDC Mailbox" - depends on ARM64 || COMPILE_TEST + tristate "Broadcom FlexSparx DMA Mailbox" + depends on ARCH_BCM_IPROC || COMPILE_TEST depends on HAS_DMA - default ARCH_BCM_IPROC help - Mailbox implementation for the Broadcom PDC ring manager, + Mailbox implementation for the Broadcom FlexSparx DMA ring manager, which provides access to various offload engines on Broadcom - SoCs. Say Y here if you want to use the Broadcom PDC. + SoCs, including FA2/FA+ on Northstar Plus and PDC on Northstar 2. endif diff --git a/drivers/mailbox/bcm-pdc-mailbox.c b/drivers/mailbox/bcm-pdc-mailbox.c index 2aeb034d5fb9..4fe7be0bdd11 100644 --- a/drivers/mailbox/bcm-pdc-mailbox.c +++ b/drivers/mailbox/bcm-pdc-mailbox.c @@ -18,7 +18,8 @@ * Broadcom PDC Mailbox Driver * The PDC provides a ring based programming interface to one or more hardware * offload engines. For example, the PDC driver works with both SPU-M and SPU2 - * cryptographic offload hardware. In some chips the PDC is referred to as MDE. + * cryptographic offload hardware. In some chips the PDC is referred to as MDE, + * and in others the FA2/FA+ hardware is used with this PDC driver. * * The PDC driver registers with the Linux mailbox framework as a mailbox * controller, once for each PDC instance. Ring 0 for each PDC is registered as @@ -108,6 +109,7 @@ #define PDC_INTMASK_OFFSET 0x24 #define PDC_INTSTATUS_OFFSET 0x20 #define PDC_RCVLAZY0_OFFSET (0x30 + 4 * PDC_RINGSET) +#define FA_RCVLAZY0_OFFSET 0x100 /* * For SPU2, configure MDE_CKSUM_CONTROL to write 17 bytes of metadata @@ -162,6 +164,11 @@ /* Maximum size buffer the DMA engine can handle */ #define PDC_DMA_BUF_MAX 16384 +enum pdc_hw { + FA_HW, /* FA2/FA+ hardware (i.e. Northstar Plus) */ + PDC_HW /* PDC/MDE hardware (i.e. Northstar 2, Pegasus) */ +}; + struct pdc_dma_map { void *ctx; /* opaque context associated with frame */ }; @@ -211,13 +218,13 @@ struct pdc_regs { u32 gptimer; /* 0x028 */ u32 PAD; - u32 intrcvlazy_0; /* 0x030 */ - u32 intrcvlazy_1; /* 0x034 */ - u32 intrcvlazy_2; /* 0x038 */ - u32 intrcvlazy_3; /* 0x03c */ + u32 intrcvlazy_0; /* 0x030 (Only in PDC, not FA2) */ + u32 intrcvlazy_1; /* 0x034 (Only in PDC, not FA2) */ + u32 intrcvlazy_2; /* 0x038 (Only in PDC, not FA2) */ + u32 intrcvlazy_3; /* 0x03c (Only in PDC, not FA2) */ u32 PAD[48]; - u32 removed_intrecvlazy; /* 0x100 */ + u32 fa_intrecvlazy; /* 0x100 (Only in FA2, not PDC) */ u32 flowctlthresh; /* 0x104 */ u32 wrrthresh; /* 0x108 */ u32 gmac_idle_cnt_thresh; /* 0x10c */ @@ -243,7 +250,7 @@ struct pdc_regs { u32 serdes_status1; /* 0x1b0 */ u32 PAD[11]; /* 0x1b4-1dc */ u32 clk_ctl_st; /* 0x1e0 */ - u32 hw_war; /* 0x1e4 */ + u32 hw_war; /* 0x1e4 (Only in PDC, not FA2) */ u32 pwrctl; /* 0x1e8 */ u32 PAD[5]; @@ -410,6 +417,9 @@ struct pdc_state { u32 txnobuf; /* unable to create tx descriptor */ u32 rxnobuf; /* unable to create rx descriptor */ u32 rx_oflow; /* count of rx overflows */ + + /* hardware type - FA2 or PDC/MDE */ + enum pdc_hw hw_type; }; /* Global variables */ @@ -1396,7 +1406,13 @@ static int pdc_interrupts_init(struct pdc_state *pdcs) /* interrupt configuration */ iowrite32(PDC_INTMASK, pdcs->pdc_reg_vbase + PDC_INTMASK_OFFSET); - iowrite32(PDC_LAZY_INT, pdcs->pdc_reg_vbase + PDC_RCVLAZY0_OFFSET); + + if (pdcs->hw_type == FA_HW) + iowrite32(PDC_LAZY_INT, pdcs->pdc_reg_vbase + + FA_RCVLAZY0_OFFSET); + else + iowrite32(PDC_LAZY_INT, pdcs->pdc_reg_vbase + + PDC_RCVLAZY0_OFFSET); /* read irq from device tree */ pdcs->pdc_irq = irq_of_parse_and_map(dn, 0); @@ -1465,6 +1481,17 @@ static int pdc_mb_init(struct pdc_state *pdcs) return 0; } +/* Device tree API */ +static const int pdc_hw = PDC_HW; +static const int fa_hw = FA_HW; + +static const struct of_device_id pdc_mbox_of_match[] = { + {.compatible = "brcm,iproc-pdc-mbox", .data = &pdc_hw}, + {.compatible = "brcm,iproc-fa2-mbox", .data = &fa_hw}, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, pdc_mbox_of_match); + /** * pdc_dt_read() - Read application-specific data from device tree. * @pdev: Platform device @@ -1481,6 +1508,8 @@ static int pdc_dt_read(struct platform_device *pdev, struct pdc_state *pdcs) { struct device *dev = &pdev->dev; struct device_node *dn = pdev->dev.of_node; + const struct of_device_id *match; + const int *hw_type; int err; err = of_property_read_u32(dn, "brcm,rx-status-len", @@ -1492,6 +1521,14 @@ static int pdc_dt_read(struct platform_device *pdev, struct pdc_state *pdcs) pdcs->use_bcm_hdr = of_property_read_bool(dn, "brcm,use-bcm-hdr"); + pdcs->hw_type = PDC_HW; + + match = of_match_device(of_match_ptr(pdc_mbox_of_match), dev); + if (match != NULL) { + hw_type = match->data; + pdcs->hw_type = *hw_type; + } + return 0; } @@ -1525,7 +1562,7 @@ static int pdc_probe(struct platform_device *pdev) pdcs->pdc_idx = pdcg.num_spu; pdcg.num_spu++; - err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); + err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(39)); if (err) { dev_warn(dev, "PDC device cannot perform DMA. Error %d.", err); goto cleanup; @@ -1611,12 +1648,6 @@ static int pdc_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id pdc_mbox_of_match[] = { - {.compatible = "brcm,iproc-pdc-mbox"}, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, pdc_mbox_of_match); - static struct platform_driver pdc_mbox_driver = { .probe = pdc_probe, .remove = pdc_remove, |