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Simple PCIe FMC carrier SPEC
Commit ae47b9d7 authored by Federico Vaga's avatar Federico Vaga
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sw:drv: prepare code to load DMA engine 

Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
parent 8dd2efb8
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software/kernel/spec-core-fpga.c
View file @ ae47b9d7
......@@ -55,6 +55,10 @@ enum spec_fpga_csr_offsets {
SPEC_FPGA_CSR_PCB_REV = SPEC_FPGA_MEM_CSR_START + 0x14,
};
enum spec_fpga_csr_fields {
SPEC_FPGA_CSR_DDR_STATUS_DONE = 0x1,
};
enum spec_fpga_therm_offsets {
SPEC_FPGA_THERM_SERID_MSB = SPEC_FPGA_MEM_THERM_START + 0x0,
SPEC_FPGA_THERM_SERID_LSB = SPEC_FPGA_MEM_THERM_START + 0x4,
......@@ -253,6 +257,28 @@ static void spec_fpga_vic_exit(struct spec_fpga *spec_fpga)
}
}
/* DMA engine */
static int spec_fpga_dma_init(struct spec_fpga *spec_fpga)
{
uint32_t ddr_status;
if (!(spec_fpga->meta->cap & SPEC_META_CAP_DMA))
return 0;
ddr_status = ioread32(spec_fpga->fpga + SPEC_FPGA_CSR_DDR_STATUS);
if (!(ddr_status & SPEC_FPGA_CSR_DDR_STATUS_DONE)) {
dev_err(&spec_fpga->dev,
"Failed to load DMA engine: DDR controller not calibrated.\n");
return -ENODEV;
}
return 0;
}
static void spec_fpga_dma_exit(struct spec_fpga *spec_fpga)
{
}
/* MFD devices */
enum spec_fpga_mfd_devs_enum {
SPEC_FPGA_MFD_FMC_I2C = 0,
......@@ -818,6 +844,9 @@ int spec_fpga_init(struct spec_gn412x *spec_gn412x)
err = spec_fpga_vic_init(spec_fpga);
if (err)
goto err_vic;
err = spec_fpga_dma_init(spec_fpga);
if (err)
goto err_dma;
err = spec_fpga_devices_init(spec_fpga);
if (err)
goto err_devs;
......@@ -836,6 +865,8 @@ err_app:
err_fmc:
spec_fpga_devices_exit(spec_fpga);
err_devs:
spec_fpga_dma_exit(spec_fpga);
err_dma:
spec_fpga_vic_exit(spec_fpga);
err_vic:
device_unregister(&spec_fpga->dev);
......@@ -860,6 +891,7 @@ int spec_fpga_exit(struct spec_gn412x *spec_gn412x)
spec_fpga_app_exit(spec_fpga);
spec_fmc_exit(spec_fpga);
spec_fpga_devices_exit(spec_fpga);
spec_fpga_dma_exit(spec_fpga);
spec_fpga_vic_exit(spec_fpga);
device_unregister(&spec_fpga->dev);
......
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