Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f1/STM32F101/SPI1/CR2#0x0
control register 2
Rx buffer DMA enable
Tx buffer DMA enable
SS output enable
Error interrupt enable
RX buffer not empty interrupt enable
Tx buffer empty interrupt enable
https://github.com/modm-io/cmsis-svd-stm32