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Message-ID: <20230213214417.mtcpeultvynyls6s@ripper>
Date: Mon, 13 Feb 2023 13:44:17 -0800
From: Bjorn Andersson <andersson@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Elliot Berman <quic_eberman@...cinc.com>
Cc: Andy Gross <agross@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Amol Maheshwari <amahesh@....qualcomm.com>,
Arnd Bergmann <arnd@...db.de>, Kalle Valo <kvalo@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Gokul krishna Krishnakumar <quic_gokukris@...cinc.com>,
linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
netdev@...r.kernel.org, linux-remoteproc@...r.kernel.org
Subject: Re: [PATCH] firmware: qcom_scm: Use fixed width src vm bitmap
On Mon, Feb 13, 2023 at 10:18:29AM -0800, Elliot Berman wrote:
> 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@...nel.org> (ath10k)
> Tested-by: Gokul krishna Krishnakumar <quic_gokukris@...cinc.com>
> Signed-off-by: Elliot Berman <quic_eberman@...cinc.com>
Reviewed-by: Bjorn Andersson <andersson@...nel.org>
@Greg, would you mind taking this through your tree for v6.3, you
already have a related change in fastrpc.c in your tree...
Regards,
Bjorn
> ---
> drivers/firmware/qcom_scm.c | 12 +++++++-----
> drivers/misc/fastrpc.c | 2 +-
> drivers/net/wireless/ath/ath10k/qmi.c | 4 ++--
> drivers/remoteproc/qcom_q6v5_mss.c | 8 ++++----
> drivers/remoteproc/qcom_q6v5_pas.c | 2 +-
> drivers/soc/qcom/rmtfs_mem.c | 2 +-
> include/linux/firmware/qcom/qcom_scm.h | 2 +-
> 7 files changed, 17 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
> index 468d4d5ab550..b95616b35bff 100644
> --- a/drivers/firmware/qcom_scm.c
> +++ b/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);
> diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
> index a701132638cf..f48466960f1b 100644
> --- a/drivers/misc/fastrpc.c
> +++ b/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];
> diff --git a/drivers/net/wireless/ath/ath10k/qmi.c b/drivers/net/wireless/ath/ath10k/qmi.c
> index 90f457b8e1fe..038c5903c0dc 100644
> --- a/drivers/net/wireless/ath/ath10k/qmi.c
> +++ b/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);
> diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
> index ab053084f7a2..1ba711bc0100 100644
> --- a/drivers/remoteproc/qcom_q6v5_mss.c
> +++ b/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;
> diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
> index 1e14ae4d233a..a0fa7176fde7 100644
> --- a/drivers/remoteproc/qcom_q6v5_pas.c
> +++ b/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;
> diff --git a/drivers/soc/qcom/rmtfs_mem.c b/drivers/soc/qcom/rmtfs_mem.c
> index 2d3ee22b9249..2657c6105bb7 100644
> --- a/drivers/soc/qcom/rmtfs_mem.c
> +++ b/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,
> diff --git a/include/linux/firmware/qcom/qcom_scm.h b/include/linux/firmware/qcom/qcom_scm.h
> index 1e449a5d7f5c..250ea4efb7cb 100644
> --- a/include/linux/firmware/qcom/qcom_scm.h
> +++ b/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);
>
>
> base-commit: 09e41676e35ab06e4bce8870ea3bf1f191c3cb90
> --
> 2.39.1
>
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