| Message ID | 20221022000506.221933-4-sebastian.fricke@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Wave5 codec driver | expand |
Le 22/10/2022 à 02:05, Sebastian Fricke a écrit : > From: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> > > Add the vdi part of the wave5 codec driver. The wave5-vdi.h header > defines common helper functions such as writing/reading register and > handling endianness. > > Signed-off-by: Robert Beckett <bob.beckett@collabora.com> > Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> > Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com> Hi, a few nit below. CJ > --- > .../platform/chips-media/wave5/wave5-vdi.c | 261 ++++++++++++++++++ > .../platform/chips-media/wave5/wave5-vdi.h | 67 +++++ > .../platform/chips-media/wave5/wave5-vpuapi.h | 2 +- > 3 files changed, 329 insertions(+), 1 deletion(-) > create mode 100644 drivers/media/platform/chips-media/wave5/wave5-vdi.c > create mode 100644 drivers/media/platform/chips-media/wave5/wave5-vdi.h > > diff --git a/drivers/media/platform/chips-media/wave5/wave5-vdi.c b/drivers/media/platform/chips-media/wave5/wave5-vdi.c > new file mode 100644 > index 000000000000..f85580dba294 > --- /dev/null > +++ b/drivers/media/platform/chips-media/wave5/wave5-vdi.c > @@ -0,0 +1,261 @@ > +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) > +/* > + * Wave5 series multi-standard codec IP - low level access functions > + * > + * Copyright (C) 2021 CHIPS&MEDIA INC > + */ > + > +#include <linux/bug.h> > +#include "wave5-vdi.h" > +#include "wave5-vpu.h" > +#include "wave5-regdefine.h" > +#include <linux/delay.h> > + > +#define VDI_SRAM_BASE_ADDR 0x00 > + > +#define VDI_SYSTEM_ENDIAN VDI_LITTLE_ENDIAN > +#define VDI_128BIT_BUS_SYSTEM_ENDIAN VDI_128BIT_LITTLE_ENDIAN > + > +static int wave5_vdi_allocate_common_memory(struct device *dev) > +{ > + struct vpu_device *vpu_dev = dev_get_drvdata(dev); > + > + if (!vpu_dev->common_mem.vaddr) { > + int ret; > + > + vpu_dev->common_mem.size = SIZE_COMMON; > + ret = wave5_vdi_allocate_dma_memory(vpu_dev, &vpu_dev->common_mem); > + if (ret) { > + dev_err(dev, "unable to allocate common buffer\n"); > + return ret; > + } > + } > + > + dev_dbg(dev, "[VDI] common_mem: daddr=%pad size=%zu vaddr=0x%p\n", > + &vpu_dev->common_mem.daddr, vpu_dev->common_mem.size, vpu_dev->common_mem.vaddr); > + > + return 0; > +} > + > +int wave5_vdi_init(struct device *dev) > +{ > + struct vpu_device *vpu_dev = dev_get_drvdata(dev); > + int ret; > + > + ret = wave5_vdi_allocate_common_memory(dev); > + if (ret < 0) { > + dev_err(dev, "[VDI] failed to get vpu common buffer from driver\n"); > + return ret; > + } > + > + if (!PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { > + WARN_ONCE(1, "unsupported product code: 0x%x\n", vpu_dev->product_code); > + return 0; > + } > + > + // if BIT processor is not running. > + if (wave5_vdi_readl(vpu_dev, W5_VCPU_CUR_PC) == 0) { > + int i; > + > + for (i = 0; i < 64; i++) > + wave5_vdi_write_register(vpu_dev, (i * 4) + 0x100, 0x0); > + } > + > + dev_dbg(dev, "[VDI] driver initialized successfully\n"); > + > + return 0; > +} > + > +int wave5_vdi_release(struct device *dev) > +{ > + struct vpu_device *vpu_dev = dev_get_drvdata(dev); > + > + vpu_dev->vdb_register = NULL; > + wave5_vdi_free_dma_memory(vpu_dev, &vpu_dev->common_mem); > + > + return 0; > +} > + > +void wave5_vdi_write_register(struct vpu_device *vpu_dev, u32 addr, u32 data) > +{ > + writel(data, vpu_dev->vdb_register + addr); > +} > + > +unsigned int wave5_vdi_readl(struct vpu_device *vpu_dev, u32 addr) > +{ > + return readl(vpu_dev->vdb_register + addr); > +} > + > +int wave5_vdi_clear_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) > +{ > + if (!vb || !vb->vaddr) { > + dev_err(vpu_dev->dev, "%s: unable to clear unmapped buffer\n", __func__); > + return -EINVAL; > + } > + > + memset(vb->vaddr, 0, vb->size); > + return vb->size; > +} > + > +static void wave5_swap_endian(struct vpu_device *vpu_dev, u8 *data, size_t len, > + unsigned int endian); > + > +int wave5_vdi_write_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb, size_t offset, > + u8 *data, size_t len, unsigned int endian) > +{ > + if (!vb || !vb->vaddr) { > + dev_err(vpu_dev->dev, "%s: unable to write to unmapped buffer\n", __func__); > + return -EINVAL; > + } > + > + if (offset > vb->size || len > vb->size || offset + len > vb->size) { > + dev_err(vpu_dev->dev, "%s: buffer too small\n", __func__); > + return -ENOSPC; > + } > + > + wave5_swap_endian(vpu_dev, data, len, endian); > + memcpy(vb->vaddr + offset, data, len); > + > + return len; > +} > + > +int wave5_vdi_allocate_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) > +{ > + void *vaddr; > + dma_addr_t daddr; > + > + if (!vb->size) { > + dev_err(vpu_dev->dev, "%s: requested size==0\n", __func__); > + return -EINVAL; > + } > + > + vaddr = dma_alloc_coherent(vpu_dev->dev, vb->size, &daddr, GFP_KERNEL); > + if (!vaddr) > + return -ENOMEM; > + vb->vaddr = vaddr; > + vb->daddr = daddr; > + > + return 0; > +} > + > +void wave5_vdi_free_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) > +{ > + if (vb->size == 0) > + return; > + > + if (!vb->vaddr) > + dev_err(vpu_dev->dev, "%s: requested free of unmapped buffer\n", __func__); > + else > + dma_free_coherent(vpu_dev->dev, vb->size, vb->vaddr, vb->daddr); > + > + memset(vb, 0, sizeof(*vb)); > +} > + > +unsigned int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian) > +{ > + if (PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { > + switch (endian) { > + case VDI_LITTLE_ENDIAN: > + endian = 0x00; > + break; > + case VDI_BIG_ENDIAN: > + endian = 0x0f; > + break; > + case VDI_32BIT_LITTLE_ENDIAN: > + endian = 0x04; > + break; > + case VDI_32BIT_BIG_ENDIAN: > + endian = 0x03; > + break; > + } > + } > + > + return (endian & 0x0f); > +} > + > +static void byte_swap(unsigned char *data, size_t len) > +{ > + u8 temp; > + unsigned int i; > + > + for (i = 0; i < len; i += 2) { > + temp = data[i]; > + data[i] = data[i + 1]; > + data[i + 1] = temp; swap(ptr[i], ptr[i + 1]); ? > + } > +} > + > +static void word_swap(unsigned char *data, size_t len) > +{ > + u16 temp; > + u16 *ptr = (u16 *)data; > + unsigned int i; > + size_t size = len / sizeof(uint16_t); > + > + for (i = 0; i < size; i += 2) { > + temp = ptr[i]; > + ptr[i] = ptr[i + 1]; > + ptr[i + 1] = temp; swap(ptr[i], ptr[i + 1]); ? > + } > +} > + > +static void dword_swap(unsigned char *data, size_t len) > +{ > + u32 temp; > + u32 *ptr = (u32 *)data; > + size_t size = len / sizeof(u32); > + unsigned int i; > + > + for (i = 0; i < size; i += 2) { > + temp = ptr[i]; > + ptr[i] = ptr[i + 1]; > + ptr[i + 1] = temp; swap(ptr[i], ptr[i + 1]); ? > + } > +} > + > +static void lword_swap(unsigned char *data, size_t len) > +{ > + u64 temp; > + u64 *ptr = (u64 *)data; > + size_t size = len / sizeof(uint64_t); > + unsigned int i; > + > + for (i = 0; i < size; i += 2) { > + temp = ptr[i]; > + ptr[i] = ptr[i + 1]; > + ptr[i + 1] = temp; swap(ptr[i], ptr[i + 1]); ? > + } > +} > + > +static void wave5_swap_endian(struct vpu_device *vpu_dev, u8 *data, size_t len, > + unsigned int endian) > +{ > + int changes; > + unsigned int sys_endian = VDI_128BIT_BUS_SYSTEM_ENDIAN; > + bool byte_change, word_change, dword_change, lword_change; > + > + if (!PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { > + dev_err(vpu_dev->dev, "unknown product id: %08x\n", vpu_dev->product_code); > + return; > + } > + > + endian = wave5_vdi_convert_endian(vpu_dev, endian); > + sys_endian = wave5_vdi_convert_endian(vpu_dev, sys_endian); > + if (endian == sys_endian) > + return; > + > + changes = endian ^ sys_endian; > + byte_change = changes & 0x01; > + word_change = ((changes & 0x02) == 0x02); > + dword_change = ((changes & 0x04) == 0x04); > + lword_change = ((changes & 0x08) == 0x08); > + > + if (byte_change) > + byte_swap(data, len); > + if (word_change) > + word_swap(data, len); > + if (dword_change) > + dword_swap(data, len); > + if (lword_change) > + lword_swap(data, len); > +} > diff --git a/drivers/media/platform/chips-media/wave5/wave5-vdi.h b/drivers/media/platform/chips-media/wave5/wave5-vdi.h > new file mode 100644 > index 000000000000..8e1d09331d5c > --- /dev/null > +++ b/drivers/media/platform/chips-media/wave5/wave5-vdi.h > @@ -0,0 +1,67 @@ > +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ > +/* > + * Wave5 series multi-standard codec IP - low level access functions > + * > + * Copyright (C) 2021 CHIPS&MEDIA INC > + */ > + > +#ifndef _VDI_H_ > +#define _VDI_H_ > + > +#include "wave5-vpuconfig.h" > +#include <linux/string.h> > +#include <linux/slab.h> > +#include <linux/device.h> > + > +/************************************************************************/ > +/* COMMON REGISTERS */ > +/************************************************************************/ > +#define VPU_PRODUCT_CODE_REGISTER 0x1044 > + > +/* system register write */ > +#define vpu_write_reg(VPU_INST, ADDR, DATA) wave5_vdi_write_register(VPU_INST, ADDR, DATA) > +// system register read The style of comment is not the same as the line above. > +#define vpu_read_reg(CORE, ADDR) wave5_vdi_readl(CORE, ADDR) > + > +struct vpu_buf { > + size_t size; > + dma_addr_t daddr; > + void *vaddr; > +}; > + > +struct dma_vpu_buf { > + size_t size; > + dma_addr_t daddr; > +}; > + > +enum endian_mode { > + VDI_LITTLE_ENDIAN = 0, /* 64bit LE */ > + VDI_BIG_ENDIAN, /* 64bit BE */ > + VDI_32BIT_LITTLE_ENDIAN, > + VDI_32BIT_BIG_ENDIAN, > + /* WAVE PRODUCTS */ > + VDI_128BIT_LITTLE_ENDIAN = 16, > + VDI_128BIT_LE_BYTE_SWAP, > + VDI_128BIT_LE_WORD_SWAP, > + VDI_128BIT_LE_WORD_BYTE_SWAP, > + VDI_128BIT_LE_DWORD_SWAP, > + VDI_128BIT_LE_DWORD_BYTE_SWAP, > + VDI_128BIT_LE_DWORD_WORD_SWAP, > + VDI_128BIT_LE_DWORD_WORD_BYTE_SWAP, > + VDI_128BIT_BE_DWORD_WORD_BYTE_SWAP, > + VDI_128BIT_BE_DWORD_WORD_SWAP, > + VDI_128BIT_BE_DWORD_BYTE_SWAP, > + VDI_128BIT_BE_DWORD_SWAP, > + VDI_128BIT_BE_WORD_BYTE_SWAP, > + VDI_128BIT_BE_WORD_SWAP, > + VDI_128BIT_BE_BYTE_SWAP, > + VDI_128BIT_BIG_ENDIAN = 31, > + VDI_ENDIAN_MAX > +}; > + > +#define VDI_128BIT_ENDIAN_MASK 0xf > + > +int wave5_vdi_init(struct device *dev); > +int wave5_vdi_release(struct device *dev); //this function may be called only at system off. > + > +#endif //#ifndef _VDI_H_ > diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h > index 8b36c7196526..ef930408d977 100644 > --- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h > +++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h > @@ -1159,7 +1159,7 @@ int wave5_vdi_clear_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); > int wave5_vdi_allocate_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); > int wave5_vdi_write_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb, size_t offset, > u8 *data, size_t len, unsigned int endian); > -int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian); > +unsigned int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian); wave5_vdi_convert_endian() seems to be already declared and used in patch 2, but not defined there. > void wave5_vdi_free_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); > > int wave5_vpu_init_with_bitcode(struct device *dev, u8 *bitcode, size_t size);
Hey Christophe, thank you for the review. On 23.10.2022 11:28, Christophe JAILLET wrote: >Le 22/10/2022 à 02:05, Sebastian Fricke a écrit : >>From: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> >> >>Add the vdi part of the wave5 codec driver. The wave5-vdi.h header >>defines common helper functions such as writing/reading register and >>handling endianness. >> >>Signed-off-by: Robert Beckett <bob.beckett@collabora.com> >>Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> >>Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com> > >Hi, a few nit below. > >CJ > >>--- >> .../platform/chips-media/wave5/wave5-vdi.c | 261 ++++++++++++++++++ >> .../platform/chips-media/wave5/wave5-vdi.h | 67 +++++ >> .../platform/chips-media/wave5/wave5-vpuapi.h | 2 +- >> 3 files changed, 329 insertions(+), 1 deletion(-) >> create mode 100644 drivers/media/platform/chips-media/wave5/wave5-vdi.c >> create mode 100644 drivers/media/platform/chips-media/wave5/wave5-vdi.h >> >>diff --git a/drivers/media/platform/chips-media/wave5/wave5-vdi.c b/drivers/media/platform/chips-media/wave5/wave5-vdi.c >>new file mode 100644 >>index 000000000000..f85580dba294 >>--- /dev/null >>+++ b/drivers/media/platform/chips-media/wave5/wave5-vdi.c >>@@ -0,0 +1,261 @@ >>+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) >>+/* >>+ * Wave5 series multi-standard codec IP - low level access functions >>+ * >>+ * Copyright (C) 2021 CHIPS&MEDIA INC >>+ */ >>+ >>+#include <linux/bug.h> >>+#include "wave5-vdi.h" >>+#include "wave5-vpu.h" >>+#include "wave5-regdefine.h" >>+#include <linux/delay.h> >>+ >>+#define VDI_SRAM_BASE_ADDR 0x00 >>+ >>+#define VDI_SYSTEM_ENDIAN VDI_LITTLE_ENDIAN >>+#define VDI_128BIT_BUS_SYSTEM_ENDIAN VDI_128BIT_LITTLE_ENDIAN >>+ >>+static int wave5_vdi_allocate_common_memory(struct device *dev) >>+{ >>+ struct vpu_device *vpu_dev = dev_get_drvdata(dev); >>+ >>+ if (!vpu_dev->common_mem.vaddr) { >>+ int ret; >>+ >>+ vpu_dev->common_mem.size = SIZE_COMMON; >>+ ret = wave5_vdi_allocate_dma_memory(vpu_dev, &vpu_dev->common_mem); >>+ if (ret) { >>+ dev_err(dev, "unable to allocate common buffer\n"); >>+ return ret; >>+ } >>+ } >>+ >>+ dev_dbg(dev, "[VDI] common_mem: daddr=%pad size=%zu vaddr=0x%p\n", >>+ &vpu_dev->common_mem.daddr, vpu_dev->common_mem.size, vpu_dev->common_mem.vaddr); >>+ >>+ return 0; >>+} >>+ >>+int wave5_vdi_init(struct device *dev) >>+{ >>+ struct vpu_device *vpu_dev = dev_get_drvdata(dev); >>+ int ret; >>+ >>+ ret = wave5_vdi_allocate_common_memory(dev); >>+ if (ret < 0) { >>+ dev_err(dev, "[VDI] failed to get vpu common buffer from driver\n"); >>+ return ret; >>+ } >>+ >>+ if (!PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { >>+ WARN_ONCE(1, "unsupported product code: 0x%x\n", vpu_dev->product_code); >>+ return 0; >>+ } >>+ >>+ // if BIT processor is not running. >>+ if (wave5_vdi_readl(vpu_dev, W5_VCPU_CUR_PC) == 0) { >>+ int i; >>+ >>+ for (i = 0; i < 64; i++) >>+ wave5_vdi_write_register(vpu_dev, (i * 4) + 0x100, 0x0); >>+ } >>+ >>+ dev_dbg(dev, "[VDI] driver initialized successfully\n"); >>+ >>+ return 0; >>+} >>+ >>+int wave5_vdi_release(struct device *dev) >>+{ >>+ struct vpu_device *vpu_dev = dev_get_drvdata(dev); >>+ >>+ vpu_dev->vdb_register = NULL; >>+ wave5_vdi_free_dma_memory(vpu_dev, &vpu_dev->common_mem); >>+ >>+ return 0; >>+} >>+ >>+void wave5_vdi_write_register(struct vpu_device *vpu_dev, u32 addr, u32 data) >>+{ >>+ writel(data, vpu_dev->vdb_register + addr); >>+} >>+ >>+unsigned int wave5_vdi_readl(struct vpu_device *vpu_dev, u32 addr) >>+{ >>+ return readl(vpu_dev->vdb_register + addr); >>+} >>+ >>+int wave5_vdi_clear_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) >>+{ >>+ if (!vb || !vb->vaddr) { >>+ dev_err(vpu_dev->dev, "%s: unable to clear unmapped buffer\n", __func__); >>+ return -EINVAL; >>+ } >>+ >>+ memset(vb->vaddr, 0, vb->size); >>+ return vb->size; >>+} >>+ >>+static void wave5_swap_endian(struct vpu_device *vpu_dev, u8 *data, size_t len, >>+ unsigned int endian); >>+ >>+int wave5_vdi_write_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb, size_t offset, >>+ u8 *data, size_t len, unsigned int endian) >>+{ >>+ if (!vb || !vb->vaddr) { >>+ dev_err(vpu_dev->dev, "%s: unable to write to unmapped buffer\n", __func__); >>+ return -EINVAL; >>+ } >>+ >>+ if (offset > vb->size || len > vb->size || offset + len > vb->size) { >>+ dev_err(vpu_dev->dev, "%s: buffer too small\n", __func__); >>+ return -ENOSPC; >>+ } >>+ >>+ wave5_swap_endian(vpu_dev, data, len, endian); >>+ memcpy(vb->vaddr + offset, data, len); >>+ >>+ return len; >>+} >>+ >>+int wave5_vdi_allocate_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) >>+{ >>+ void *vaddr; >>+ dma_addr_t daddr; >>+ >>+ if (!vb->size) { >>+ dev_err(vpu_dev->dev, "%s: requested size==0\n", __func__); >>+ return -EINVAL; >>+ } >>+ >>+ vaddr = dma_alloc_coherent(vpu_dev->dev, vb->size, &daddr, GFP_KERNEL); >>+ if (!vaddr) >>+ return -ENOMEM; >>+ vb->vaddr = vaddr; >>+ vb->daddr = daddr; >>+ >>+ return 0; >>+} >>+ >>+void wave5_vdi_free_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) >>+{ >>+ if (vb->size == 0) >>+ return; >>+ >>+ if (!vb->vaddr) >>+ dev_err(vpu_dev->dev, "%s: requested free of unmapped buffer\n", __func__); >>+ else >>+ dma_free_coherent(vpu_dev->dev, vb->size, vb->vaddr, vb->daddr); >>+ >>+ memset(vb, 0, sizeof(*vb)); >>+} >>+ >>+unsigned int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian) >>+{ >>+ if (PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { >>+ switch (endian) { >>+ case VDI_LITTLE_ENDIAN: >>+ endian = 0x00; >>+ break; >>+ case VDI_BIG_ENDIAN: >>+ endian = 0x0f; >>+ break; >>+ case VDI_32BIT_LITTLE_ENDIAN: >>+ endian = 0x04; >>+ break; >>+ case VDI_32BIT_BIG_ENDIAN: >>+ endian = 0x03; >>+ break; >>+ } >>+ } >>+ >>+ return (endian & 0x0f); >>+} >>+ >>+static void byte_swap(unsigned char *data, size_t len) >>+{ >>+ u8 temp; >>+ unsigned int i; >>+ >>+ for (i = 0; i < len; i += 2) { >>+ temp = data[i]; >>+ data[i] = data[i + 1]; >>+ data[i + 1] = temp; > >swap(ptr[i], ptr[i + 1]); >? Yes good point, I forgot to add that change, thanks for pointing it out. > >>+ } >>+} >>+ >>+static void word_swap(unsigned char *data, size_t len) >>+{ >>+ u16 temp; >>+ u16 *ptr = (u16 *)data; >>+ unsigned int i; >>+ size_t size = len / sizeof(uint16_t); >>+ >>+ for (i = 0; i < size; i += 2) { >>+ temp = ptr[i]; >>+ ptr[i] = ptr[i + 1]; >>+ ptr[i + 1] = temp; > >swap(ptr[i], ptr[i + 1]); >? > >>+ } >>+} >>+ >>+static void dword_swap(unsigned char *data, size_t len) >>+{ >>+ u32 temp; >>+ u32 *ptr = (u32 *)data; >>+ size_t size = len / sizeof(u32); >>+ unsigned int i; >>+ >>+ for (i = 0; i < size; i += 2) { >>+ temp = ptr[i]; >>+ ptr[i] = ptr[i + 1]; >>+ ptr[i + 1] = temp; > >swap(ptr[i], ptr[i + 1]); >? > >>+ } >>+} >>+ >>+static void lword_swap(unsigned char *data, size_t len) >>+{ >>+ u64 temp; >>+ u64 *ptr = (u64 *)data; >>+ size_t size = len / sizeof(uint64_t); >>+ unsigned int i; >>+ >>+ for (i = 0; i < size; i += 2) { >>+ temp = ptr[i]; >>+ ptr[i] = ptr[i + 1]; >>+ ptr[i + 1] = temp; > >swap(ptr[i], ptr[i + 1]); >? > >>+ } >>+} >>+ >>+static void wave5_swap_endian(struct vpu_device *vpu_dev, u8 *data, size_t len, >>+ unsigned int endian) >>+{ >>+ int changes; >>+ unsigned int sys_endian = VDI_128BIT_BUS_SYSTEM_ENDIAN; >>+ bool byte_change, word_change, dword_change, lword_change; >>+ >>+ if (!PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { >>+ dev_err(vpu_dev->dev, "unknown product id: %08x\n", vpu_dev->product_code); >>+ return; >>+ } >>+ >>+ endian = wave5_vdi_convert_endian(vpu_dev, endian); >>+ sys_endian = wave5_vdi_convert_endian(vpu_dev, sys_endian); >>+ if (endian == sys_endian) >>+ return; >>+ >>+ changes = endian ^ sys_endian; >>+ byte_change = changes & 0x01; >>+ word_change = ((changes & 0x02) == 0x02); >>+ dword_change = ((changes & 0x04) == 0x04); >>+ lword_change = ((changes & 0x08) == 0x08); >>+ >>+ if (byte_change) >>+ byte_swap(data, len); >>+ if (word_change) >>+ word_swap(data, len); >>+ if (dword_change) >>+ dword_swap(data, len); >>+ if (lword_change) >>+ lword_swap(data, len); >>+} >>diff --git a/drivers/media/platform/chips-media/wave5/wave5-vdi.h b/drivers/media/platform/chips-media/wave5/wave5-vdi.h >>new file mode 100644 >>index 000000000000..8e1d09331d5c >>--- /dev/null >>+++ b/drivers/media/platform/chips-media/wave5/wave5-vdi.h >>@@ -0,0 +1,67 @@ >>+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ >>+/* >>+ * Wave5 series multi-standard codec IP - low level access functions >>+ * >>+ * Copyright (C) 2021 CHIPS&MEDIA INC >>+ */ >>+ >>+#ifndef _VDI_H_ >>+#define _VDI_H_ >>+ >>+#include "wave5-vpuconfig.h" >>+#include <linux/string.h> >>+#include <linux/slab.h> >>+#include <linux/device.h> >>+ >>+/************************************************************************/ >>+/* COMMON REGISTERS */ >>+/************************************************************************/ >>+#define VPU_PRODUCT_CODE_REGISTER 0x1044 >>+ >>+/* system register write */ >>+#define vpu_write_reg(VPU_INST, ADDR, DATA) wave5_vdi_write_register(VPU_INST, ADDR, DATA) >>+// system register read > >The style of comment is not the same as the line above. Also true, I check for more cases like this in the driver. > >>+#define vpu_read_reg(CORE, ADDR) wave5_vdi_readl(CORE, ADDR) >>+ >>+struct vpu_buf { >>+ size_t size; >>+ dma_addr_t daddr; >>+ void *vaddr; >>+}; >>+ >>+struct dma_vpu_buf { >>+ size_t size; >>+ dma_addr_t daddr; >>+}; >>+ >>+enum endian_mode { >>+ VDI_LITTLE_ENDIAN = 0, /* 64bit LE */ >>+ VDI_BIG_ENDIAN, /* 64bit BE */ >>+ VDI_32BIT_LITTLE_ENDIAN, >>+ VDI_32BIT_BIG_ENDIAN, >>+ /* WAVE PRODUCTS */ >>+ VDI_128BIT_LITTLE_ENDIAN = 16, >>+ VDI_128BIT_LE_BYTE_SWAP, >>+ VDI_128BIT_LE_WORD_SWAP, >>+ VDI_128BIT_LE_WORD_BYTE_SWAP, >>+ VDI_128BIT_LE_DWORD_SWAP, >>+ VDI_128BIT_LE_DWORD_BYTE_SWAP, >>+ VDI_128BIT_LE_DWORD_WORD_SWAP, >>+ VDI_128BIT_LE_DWORD_WORD_BYTE_SWAP, >>+ VDI_128BIT_BE_DWORD_WORD_BYTE_SWAP, >>+ VDI_128BIT_BE_DWORD_WORD_SWAP, >>+ VDI_128BIT_BE_DWORD_BYTE_SWAP, >>+ VDI_128BIT_BE_DWORD_SWAP, >>+ VDI_128BIT_BE_WORD_BYTE_SWAP, >>+ VDI_128BIT_BE_WORD_SWAP, >>+ VDI_128BIT_BE_BYTE_SWAP, >>+ VDI_128BIT_BIG_ENDIAN = 31, >>+ VDI_ENDIAN_MAX >>+}; >>+ >>+#define VDI_128BIT_ENDIAN_MASK 0xf >>+ >>+int wave5_vdi_init(struct device *dev); >>+int wave5_vdi_release(struct device *dev); //this function may be called only at system off. >>+ >>+#endif //#ifndef _VDI_H_ >>diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h >>index 8b36c7196526..ef930408d977 100644 >>--- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h >>+++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h >>@@ -1159,7 +1159,7 @@ int wave5_vdi_clear_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); >> int wave5_vdi_allocate_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); >> int wave5_vdi_write_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb, size_t offset, >> u8 *data, size_t len, unsigned int endian); >>-int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian); >>+unsigned int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian); > >wave5_vdi_convert_endian() seems to be already declared and used in >patch 2, but not defined there. Ah .. thanks for pointing this out, yes I notice that the two commits have cyclic dependencies. I will combine them into 1 commit. Greetings, Sebastian > >> void wave5_vdi_free_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); >> int wave5_vpu_init_with_bitcode(struct device *dev, u8 *bitcode, size_t size); >
diff --git a/drivers/media/platform/chips-media/wave5/wave5-vdi.c b/drivers/media/platform/chips-media/wave5/wave5-vdi.c new file mode 100644 index 000000000000..f85580dba294 --- /dev/null +++ b/drivers/media/platform/chips-media/wave5/wave5-vdi.c @@ -0,0 +1,261 @@ +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) +/* + * Wave5 series multi-standard codec IP - low level access functions + * + * Copyright (C) 2021 CHIPS&MEDIA INC + */ + +#include <linux/bug.h> +#include "wave5-vdi.h" +#include "wave5-vpu.h" +#include "wave5-regdefine.h" +#include <linux/delay.h> + +#define VDI_SRAM_BASE_ADDR 0x00 + +#define VDI_SYSTEM_ENDIAN VDI_LITTLE_ENDIAN +#define VDI_128BIT_BUS_SYSTEM_ENDIAN VDI_128BIT_LITTLE_ENDIAN + +static int wave5_vdi_allocate_common_memory(struct device *dev) +{ + struct vpu_device *vpu_dev = dev_get_drvdata(dev); + + if (!vpu_dev->common_mem.vaddr) { + int ret; + + vpu_dev->common_mem.size = SIZE_COMMON; + ret = wave5_vdi_allocate_dma_memory(vpu_dev, &vpu_dev->common_mem); + if (ret) { + dev_err(dev, "unable to allocate common buffer\n"); + return ret; + } + } + + dev_dbg(dev, "[VDI] common_mem: daddr=%pad size=%zu vaddr=0x%p\n", + &vpu_dev->common_mem.daddr, vpu_dev->common_mem.size, vpu_dev->common_mem.vaddr); + + return 0; +} + +int wave5_vdi_init(struct device *dev) +{ + struct vpu_device *vpu_dev = dev_get_drvdata(dev); + int ret; + + ret = wave5_vdi_allocate_common_memory(dev); + if (ret < 0) { + dev_err(dev, "[VDI] failed to get vpu common buffer from driver\n"); + return ret; + } + + if (!PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { + WARN_ONCE(1, "unsupported product code: 0x%x\n", vpu_dev->product_code); + return 0; + } + + // if BIT processor is not running. + if (wave5_vdi_readl(vpu_dev, W5_VCPU_CUR_PC) == 0) { + int i; + + for (i = 0; i < 64; i++) + wave5_vdi_write_register(vpu_dev, (i * 4) + 0x100, 0x0); + } + + dev_dbg(dev, "[VDI] driver initialized successfully\n"); + + return 0; +} + +int wave5_vdi_release(struct device *dev) +{ + struct vpu_device *vpu_dev = dev_get_drvdata(dev); + + vpu_dev->vdb_register = NULL; + wave5_vdi_free_dma_memory(vpu_dev, &vpu_dev->common_mem); + + return 0; +} + +void wave5_vdi_write_register(struct vpu_device *vpu_dev, u32 addr, u32 data) +{ + writel(data, vpu_dev->vdb_register + addr); +} + +unsigned int wave5_vdi_readl(struct vpu_device *vpu_dev, u32 addr) +{ + return readl(vpu_dev->vdb_register + addr); +} + +int wave5_vdi_clear_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) +{ + if (!vb || !vb->vaddr) { + dev_err(vpu_dev->dev, "%s: unable to clear unmapped buffer\n", __func__); + return -EINVAL; + } + + memset(vb->vaddr, 0, vb->size); + return vb->size; +} + +static void wave5_swap_endian(struct vpu_device *vpu_dev, u8 *data, size_t len, + unsigned int endian); + +int wave5_vdi_write_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb, size_t offset, + u8 *data, size_t len, unsigned int endian) +{ + if (!vb || !vb->vaddr) { + dev_err(vpu_dev->dev, "%s: unable to write to unmapped buffer\n", __func__); + return -EINVAL; + } + + if (offset > vb->size || len > vb->size || offset + len > vb->size) { + dev_err(vpu_dev->dev, "%s: buffer too small\n", __func__); + return -ENOSPC; + } + + wave5_swap_endian(vpu_dev, data, len, endian); + memcpy(vb->vaddr + offset, data, len); + + return len; +} + +int wave5_vdi_allocate_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) +{ + void *vaddr; + dma_addr_t daddr; + + if (!vb->size) { + dev_err(vpu_dev->dev, "%s: requested size==0\n", __func__); + return -EINVAL; + } + + vaddr = dma_alloc_coherent(vpu_dev->dev, vb->size, &daddr, GFP_KERNEL); + if (!vaddr) + return -ENOMEM; + vb->vaddr = vaddr; + vb->daddr = daddr; + + return 0; +} + +void wave5_vdi_free_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb) +{ + if (vb->size == 0) + return; + + if (!vb->vaddr) + dev_err(vpu_dev->dev, "%s: requested free of unmapped buffer\n", __func__); + else + dma_free_coherent(vpu_dev->dev, vb->size, vb->vaddr, vb->daddr); + + memset(vb, 0, sizeof(*vb)); +} + +unsigned int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian) +{ + if (PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { + switch (endian) { + case VDI_LITTLE_ENDIAN: + endian = 0x00; + break; + case VDI_BIG_ENDIAN: + endian = 0x0f; + break; + case VDI_32BIT_LITTLE_ENDIAN: + endian = 0x04; + break; + case VDI_32BIT_BIG_ENDIAN: + endian = 0x03; + break; + } + } + + return (endian & 0x0f); +} + +static void byte_swap(unsigned char *data, size_t len) +{ + u8 temp; + unsigned int i; + + for (i = 0; i < len; i += 2) { + temp = data[i]; + data[i] = data[i + 1]; + data[i + 1] = temp; + } +} + +static void word_swap(unsigned char *data, size_t len) +{ + u16 temp; + u16 *ptr = (u16 *)data; + unsigned int i; + size_t size = len / sizeof(uint16_t); + + for (i = 0; i < size; i += 2) { + temp = ptr[i]; + ptr[i] = ptr[i + 1]; + ptr[i + 1] = temp; + } +} + +static void dword_swap(unsigned char *data, size_t len) +{ + u32 temp; + u32 *ptr = (u32 *)data; + size_t size = len / sizeof(u32); + unsigned int i; + + for (i = 0; i < size; i += 2) { + temp = ptr[i]; + ptr[i] = ptr[i + 1]; + ptr[i + 1] = temp; + } +} + +static void lword_swap(unsigned char *data, size_t len) +{ + u64 temp; + u64 *ptr = (u64 *)data; + size_t size = len / sizeof(uint64_t); + unsigned int i; + + for (i = 0; i < size; i += 2) { + temp = ptr[i]; + ptr[i] = ptr[i + 1]; + ptr[i + 1] = temp; + } +} + +static void wave5_swap_endian(struct vpu_device *vpu_dev, u8 *data, size_t len, + unsigned int endian) +{ + int changes; + unsigned int sys_endian = VDI_128BIT_BUS_SYSTEM_ENDIAN; + bool byte_change, word_change, dword_change, lword_change; + + if (!PRODUCT_CODE_W_SERIES(vpu_dev->product_code)) { + dev_err(vpu_dev->dev, "unknown product id: %08x\n", vpu_dev->product_code); + return; + } + + endian = wave5_vdi_convert_endian(vpu_dev, endian); + sys_endian = wave5_vdi_convert_endian(vpu_dev, sys_endian); + if (endian == sys_endian) + return; + + changes = endian ^ sys_endian; + byte_change = changes & 0x01; + word_change = ((changes & 0x02) == 0x02); + dword_change = ((changes & 0x04) == 0x04); + lword_change = ((changes & 0x08) == 0x08); + + if (byte_change) + byte_swap(data, len); + if (word_change) + word_swap(data, len); + if (dword_change) + dword_swap(data, len); + if (lword_change) + lword_swap(data, len); +} diff --git a/drivers/media/platform/chips-media/wave5/wave5-vdi.h b/drivers/media/platform/chips-media/wave5/wave5-vdi.h new file mode 100644 index 000000000000..8e1d09331d5c --- /dev/null +++ b/drivers/media/platform/chips-media/wave5/wave5-vdi.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ +/* + * Wave5 series multi-standard codec IP - low level access functions + * + * Copyright (C) 2021 CHIPS&MEDIA INC + */ + +#ifndef _VDI_H_ +#define _VDI_H_ + +#include "wave5-vpuconfig.h" +#include <linux/string.h> +#include <linux/slab.h> +#include <linux/device.h> + +/************************************************************************/ +/* COMMON REGISTERS */ +/************************************************************************/ +#define VPU_PRODUCT_CODE_REGISTER 0x1044 + +/* system register write */ +#define vpu_write_reg(VPU_INST, ADDR, DATA) wave5_vdi_write_register(VPU_INST, ADDR, DATA) +// system register read +#define vpu_read_reg(CORE, ADDR) wave5_vdi_readl(CORE, ADDR) + +struct vpu_buf { + size_t size; + dma_addr_t daddr; + void *vaddr; +}; + +struct dma_vpu_buf { + size_t size; + dma_addr_t daddr; +}; + +enum endian_mode { + VDI_LITTLE_ENDIAN = 0, /* 64bit LE */ + VDI_BIG_ENDIAN, /* 64bit BE */ + VDI_32BIT_LITTLE_ENDIAN, + VDI_32BIT_BIG_ENDIAN, + /* WAVE PRODUCTS */ + VDI_128BIT_LITTLE_ENDIAN = 16, + VDI_128BIT_LE_BYTE_SWAP, + VDI_128BIT_LE_WORD_SWAP, + VDI_128BIT_LE_WORD_BYTE_SWAP, + VDI_128BIT_LE_DWORD_SWAP, + VDI_128BIT_LE_DWORD_BYTE_SWAP, + VDI_128BIT_LE_DWORD_WORD_SWAP, + VDI_128BIT_LE_DWORD_WORD_BYTE_SWAP, + VDI_128BIT_BE_DWORD_WORD_BYTE_SWAP, + VDI_128BIT_BE_DWORD_WORD_SWAP, + VDI_128BIT_BE_DWORD_BYTE_SWAP, + VDI_128BIT_BE_DWORD_SWAP, + VDI_128BIT_BE_WORD_BYTE_SWAP, + VDI_128BIT_BE_WORD_SWAP, + VDI_128BIT_BE_BYTE_SWAP, + VDI_128BIT_BIG_ENDIAN = 31, + VDI_ENDIAN_MAX +}; + +#define VDI_128BIT_ENDIAN_MASK 0xf + +int wave5_vdi_init(struct device *dev); +int wave5_vdi_release(struct device *dev); //this function may be called only at system off. + +#endif //#ifndef _VDI_H_ diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h index 8b36c7196526..ef930408d977 100644 --- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h +++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h @@ -1159,7 +1159,7 @@ int wave5_vdi_clear_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); int wave5_vdi_allocate_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); int wave5_vdi_write_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb, size_t offset, u8 *data, size_t len, unsigned int endian); -int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian); +unsigned int wave5_vdi_convert_endian(struct vpu_device *vpu_dev, unsigned int endian); void wave5_vdi_free_dma_memory(struct vpu_device *vpu_dev, struct vpu_buf *vb); int wave5_vpu_init_with_bitcode(struct device *dev, u8 *bitcode, size_t size);