dmaengine: sdxi: Remove write-only fields from sdxi_dev

These aren't used for anything in this version of the driver, drop
them.

Signed-off-by: Nathan Lynch <nathan.lynch@amd.com>

Author: nathanlynch

drivers/dma/sdxi/device.c

@@ -184,15 +184,10 @@ static int sdxi_fn_activate(struct sdxi_dev *sdxi)
 
 	/* Read capabilities and features. */
 	cap0 = sdxi_read64(sdxi, SDXI_MMIO_CAP0);
-	sdxi->sfunc = FIELD_GET(SDXI_MMIO_CAP0_SFUNC, cap0);
-	sdxi->max_ring_entries = SZ_1K;
-	sdxi->max_ring_entries *= 1U << FIELD_GET(SDXI_MMIO_CAP0_MAX_DS_RING_SZ, cap0);
 	sdxi->db_stride = SZ_4K;
 	sdxi->db_stride *= 1U << FIELD_GET(SDXI_MMIO_CAP0_DB_STRIDE, cap0);
 
 	cap1 = sdxi_read64(sdxi, SDXI_MMIO_CAP1);
-	sdxi->max_akeys = SZ_256;
-	sdxi->max_akeys *= 1U << FIELD_GET(SDXI_MMIO_CAP1_MAX_AKEY_SZ, cap1);
 	sdxi->op_grp_cap = FIELD_GET(SDXI_MMIO_CAP1_OPB_000_CAP, cap1);
 
 	/*

drivers/dma/sdxi/pci.c

@@ -62,8 +62,6 @@ static int sdxi_pci_init(struct sdxi_dev *sdxi)
 				     "failed to map doorbell region\n");
 	}
 
-	sdxi->dbs_bar = pci_resource_start(pdev, SDXI_PCI_BAR_DOORBELL);
-
 	/*
 	 * Allocate the minimum required set of vectors plus one for
 	 * each client context supported by the function.

drivers/dma/sdxi/sdxi.h

@@ -94,16 +94,11 @@ struct dma_pool;
 
 struct sdxi_dev {
 	struct device *dev;
-	resource_size_t dbs_bar;	/* doorbells base (BAR2) */
 	void __iomem *ctrl_regs;	/* virt addr of ctrl registers */
 	void __iomem *dbs;		/* virt addr of doorbells */
 
 	/* hardware capabilities (from cap0 & cap1) */
-	u16 sfunc;			/* function's requester id */
 	u32 db_stride;			/* doorbell stride in bytes */
-	u64 max_ring_entries;		/* max # of ring entries supported */
-
-	u32 max_akeys;			/* max akey # supported */
 	u16 max_cxtid;			/* Maximum context ID allowed. */
 	u32 op_grp_cap;			/* supported operatation group cap */