[4/7,V6] Header with various utility functions shared by VMWARE SCSI and network devices

From: Dmitry Fleytman <dmitry@daynix.com>

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Yan Vugenfirer <yan@daynix.com>
---
 hw/vmware_utils.h |  126 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 126 insertions(+), 0 deletions(-)
 create mode 100644 hw/vmware_utils.h

On Tue, Apr 17, 2012 at 03:32:38PM +0300, Dmitry Fleytman wrote:
> From: Dmitry Fleytman <dmitry@daynix.com>
> 
> Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
> Signed-off-by: Yan Vugenfirer <yan@daynix.com>

I can easily see how different vmware devices would
share some code. However:

> ---
>  hw/vmware_utils.h |  126 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 126 insertions(+), 0 deletions(-)
>  create mode 100644 hw/vmware_utils.h
> 
> diff --git a/hw/vmware_utils.h b/hw/vmware_utils.h
> new file mode 100644
> index 0000000..0d261c0
> --- /dev/null
> +++ b/hw/vmware_utils.h
> @@ -0,0 +1,126 @@
> +/*
> + * QEMU VMWARE paravirtual devices - auxiliary code
> + *
> + * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
> + *
> + * Developed by Daynix Computing LTD (http://www.daynix.com)
> + *
> + * Authors:
> + * Dmitry Fleytman <dmitry@daynix.com>
> + * Yan Vugenfirer <yan@daynix.com>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or later.
> + * See the COPYING file in the top-level directory.
> + *
> + */
> +
> +#ifndef VMWARE_UTILS_H
> +#define VMWARE_UTILS_H
> +
> +#ifndef VMW_SHPRN
> +#define VMW_SHPRN(fmt, ...) do {} while (0)
> +#endif
> +
> +/* Shared memory access functions with byte swap support */
> +static inline void
> +vmw_shmem_read(target_phys_addr_t addr, void *buf, int len)
> +{
> +    VMW_SHPRN("SHMEM r: %" PRIx64 ", len: %d to %p", addr, len, buf);
> +    cpu_physical_memory_read(addr, buf, len);
> +}
> +
> +static inline void
> +vmw_shmem_write(target_phys_addr_t addr, void *buf, int len)
> +{
> +    VMW_SHPRN("SHMEM w: %" PRIx64 ", len: %d to %p", addr, len, buf);
> +    cpu_physical_memory_write(addr, buf, len);
> +}
> +
> +static inline void
> +vmw_shmem_rw(target_phys_addr_t addr, void *buf, int len, int is_write)
> +{
> +    VMW_SHPRN("SHMEM r/w: %" PRIx64 ", len: %d (to %p), is write: %d",
> +              addr, len, buf, is_write);
> +
> +    cpu_physical_memory_rw(addr, buf, len, is_write);
> +}
> +
> +static inline void
> +vmw_shmem_set(target_phys_addr_t addr, uint8 val, int len)
> +{
> +    int i;
> +    VMW_SHPRN("SHMEM set: %" PRIx64 ", len: %d (value 0x%X)", addr, len, val);
> +
> +    for (i = 0; i < len; i++) {
> +        cpu_physical_memory_write(addr + i, &val, 1);
> +    }
> +}
> +
> +static inline uint32_t
> +vmw_shmem_ld8(target_phys_addr_t addr)
> +{
> +    uint8_t res = ldub_phys(addr);
> +    VMW_SHPRN("SHMEM load8: %" PRIx64 " (value 0x%X)", addr, res);
> +    return res;
> +}
> +
> +static inline void
> +vmw_shmem_st8(target_phys_addr_t addr, uint8_t value)
> +{
> +    VMW_SHPRN("SHMEM store8: %" PRIx64 " (value 0x%X)", addr, value);
> +    stb_phys(addr, value);
> +}
> +
> +static inline uint32_t
> +vmw_shmem_ld16(target_phys_addr_t addr)
> +{
> +    uint16_t res = lduw_le_phys(addr);
> +    VMW_SHPRN("SHMEM load16: %" PRIx64 " (value 0x%X)", addr, res);
> +    return res;
> +}
> +
> +static inline void
> +vmw_shmem_st16(target_phys_addr_t addr, uint16_t value)
> +{
> +    VMW_SHPRN("SHMEM store16: %" PRIx64 " (value 0x%X)", addr, value);
> +    stw_le_phys(addr, value);
> +}
> +
> +static inline uint32_t
> +vmw_shmem_ld32(target_phys_addr_t addr)
> +{
> +    uint32_t res = ldl_le_phys(addr);
> +    VMW_SHPRN("SHMEM load32: %" PRIx64 " (value 0x%X)", addr, res);
> +    return res;
> +}
> +
> +static inline void
> +vmw_shmem_st32(target_phys_addr_t addr, uint32_t value)
> +{
> +    VMW_SHPRN("SHMEM store32: %" PRIx64 " (value 0x%X)", addr, value);
> +    stl_le_phys(addr, value);
> +}
> +
> +static inline uint64_t
> +vmw_shmem_ld64(target_phys_addr_t addr)
> +{
> +    uint64_t res = ldq_le_phys(addr);
> +    VMW_SHPRN("SHMEM load64: %" PRIx64 " (value %" PRIx64 ")", addr, res);
> +    return res;
> +}
> +
> +static inline void
> +vmw_shmem_st64(target_phys_addr_t addr, uint64_t value)
> +{
> +    VMW_SHPRN("SHMEM store64: %" PRIx64 " (value %" PRIx64 ")", addr, value);
> +    stq_le_phys(addr, value);
> +}
> +

Pls remove these wrappers.  These are just memory stores. Our codebase
is too large as it is without every driver wrapping all standard calls.


> +/* MACROS for simplification of operations on array-style registers */

UPPERCASE ABUSE

> +#define IS_MULTIREG_ADDR(addr, base, cnt, regsize)                 \
> +    (((addr + 1) > (base)) && ((addr) < (base) + (cnt) * (regsize)))


Same as range_covers_byte(base, cnt * regsize, addr)?

> +
> +#define MULTIREG_IDX_BY_ADDR(addr, base, regsize)                  \
> +    (((addr) - (base)) / (regsize))
> +

Above two macros is all that's left. No objection but it does not say
what they do - want to add minimal documentation?
And please prefix with VMWARE_ or something.

> +#endif
> -- 
> 1.7.7.6