firmware: qcom_scm: Use fixed width src vm bitmap

The maximum VMID for assign_mem is 63. Use a u64 to represent this
bitmap instead of architecture-dependent "unsigned int" which varies in
size on 32-bit and 64-bit platforms.

Acked-by: Kalle Valo <kvalo@kernel.org> (ath10k)
Tested-by: Gokul krishna Krishnakumar <quic_gokukris@quicinc.com>
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230213181832.3489174-1-quic_eberman@quicinc.com

Author: eberman-quic

drivers/firmware/qcom_scm.c

@@ -905,7 +905,7 @@ static int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
  * Return negative errno on failure or 0 on success with @srcvm updated.
  */
 int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
-			unsigned int *srcvm,
+			u64 *srcvm,
 			const struct qcom_scm_vmperm *newvm,
 			unsigned int dest_cnt)
 {
@@ -922,9 +922,9 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
 	__le32 *src;
 	void *ptr;
 	int ret, i, b;
-	unsigned long srcvm_bits = *srcvm;
+	u64 srcvm_bits = *srcvm;
 
-	src_sz = hweight_long(srcvm_bits) * sizeof(*src);
+	src_sz = hweight64(srcvm_bits) * sizeof(*src);
 	mem_to_map_sz = sizeof(*mem_to_map);
 	dest_sz = dest_cnt * sizeof(*destvm);
 	ptr_sz = ALIGN(src_sz, SZ_64) + ALIGN(mem_to_map_sz, SZ_64) +
@@ -937,8 +937,10 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
 	/* Fill source vmid detail */
 	src = ptr;
 	i = 0;
-	for_each_set_bit(b, &srcvm_bits, BITS_PER_LONG)
-		src[i++] = cpu_to_le32(b);
+	for (b = 0; b < BITS_PER_TYPE(u64); b++) {
+		if (srcvm_bits & BIT(b))
+			src[i++] = cpu_to_le32(b);
+	}
 
 	/* Fill details of mem buff to map */
 	mem_to_map = ptr + ALIGN(src_sz, SZ_64);

drivers/misc/fastrpc.c

@@ -262,7 +262,7 @@ struct fastrpc_channel_ctx {
 	int domain_id;
 	int sesscount;
 	int vmcount;
-	u32 perms;
+	u64 perms;
 	struct qcom_scm_vmperm vmperms[FASTRPC_MAX_VMIDS];
 	struct rpmsg_device *rpdev;
 	struct fastrpc_session_ctx session[FASTRPC_MAX_SESSIONS];

drivers/net/wireless/ath/ath10k/qmi.c

@@ -33,7 +33,7 @@ static int ath10k_qmi_map_msa_permission(struct ath10k_qmi *qmi,
 {
 	struct qcom_scm_vmperm dst_perms[3];
 	struct ath10k *ar = qmi->ar;
-	unsigned int src_perms;
+	u64 src_perms;
 	u32 perm_count;
 	int ret;
 
@@ -65,7 +65,7 @@ static int ath10k_qmi_unmap_msa_permission(struct ath10k_qmi *qmi,
 {
 	struct qcom_scm_vmperm dst_perms;
 	struct ath10k *ar = qmi->ar;
-	unsigned int src_perms;
+	u64 src_perms;
 	int ret;
 
 	src_perms = BIT(QCOM_SCM_VMID_MSS_MSA) | BIT(QCOM_SCM_VMID_WLAN);

drivers/remoteproc/qcom_q6v5_mss.c

@@ -235,8 +235,8 @@ struct q6v5 {
 	bool has_qaccept_regs;
 	bool has_ext_cntl_regs;
 	bool has_vq6;
-	int mpss_perm;
-	int mba_perm;
+	u64 mpss_perm;
+	u64 mba_perm;
 	const char *hexagon_mdt_image;
 	int version;
 };
@@ -414,7 +414,7 @@ static void q6v5_pds_disable(struct q6v5 *qproc, struct device **pds,
 	}
 }
 
-static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm,
+static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, u64 *current_perm,
 				   bool local, bool remote, phys_addr_t addr,
 				   size_t size)
 {
@@ -967,7 +967,7 @@ static int q6v5_mpss_init_image(struct q6v5 *qproc, const struct firmware *fw,
 	unsigned long dma_attrs = DMA_ATTR_FORCE_CONTIGUOUS;
 	dma_addr_t phys;
 	void *metadata;
-	int mdata_perm;
+	u64 mdata_perm;
 	int xferop_ret;
 	size_t size;
 	void *ptr;

drivers/remoteproc/qcom_q6v5_pas.c

@@ -94,7 +94,7 @@ struct qcom_adsp {
 	size_t region_assign_size;
 
 	int region_assign_idx;
-	int region_assign_perms;
+	u64 region_assign_perms;
 
 	struct qcom_rproc_glink glink_subdev;
 	struct qcom_rproc_subdev smd_subdev;

drivers/soc/qcom/rmtfs_mem.c

@@ -31,7 +31,7 @@ struct qcom_rmtfs_mem {
 
 	unsigned int client_id;
 
-	unsigned int perms;
+	u64 perms;
 };
 
 static ssize_t qcom_rmtfs_mem_show(struct device *dev,

include/linux/firmware/qcom/qcom_scm.h

@@ -94,7 +94,7 @@ extern int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
 					  u32 cp_nonpixel_start,
 					  u32 cp_nonpixel_size);
 extern int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
-			       unsigned int *src,
+			       u64 *src,
 			       const struct qcom_scm_vmperm *newvm,
 			       unsigned int dest_cnt);